Adding upstream version 2.10.34.upstream/2.10.34upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

111 files changed, 29793 insertions, 0 deletions

diff --git a/plug-ins/script-fu/Makefile.am b/plug-ins/script-fu/Makefile.am
new file mode 100644
index 0000000..46ad336
--- /dev/null
+++ b/plug-ins/script-fu/Makefile.am
@@ -0,0 +1,117 @@
+## Process this file with automake to produce Makefile.in
+
+if PLATFORM_OSX
+xobjective_c = "-xobjective-c"
+xobjective_cxx = "-xobjective-c++"
+xnone = "-xnone"
+framework_cocoa = -framework Cocoa
+endif
+
+if OS_WIN32
+mwindows = -mwindows
+WINSOCK_LIBS = -lws2_32
+else
+libm = -lm
+endif
+
+libgimpui = $(top_builddir)/libgimp/libgimpui-$(GIMP_API_VERSION).la
+libgimpwidgets = $(top_builddir)/libgimpwidgets/libgimpwidgets-$(GIMP_API_VERSION).la
+libgimp = $(top_builddir)/libgimp/libgimp-$(GIMP_API_VERSION).la
+libgimpcolor = $(top_builddir)/libgimpcolor/libgimpcolor-$(GIMP_API_VERSION).la
+libgimpbase = $(top_builddir)/libgimpbase/libgimpbase-$(GIMP_API_VERSION).la
+libgimpconfig = $(top_builddir)/libgimpconfig/libgimpconfig-$(GIMP_API_VERSION).la
+libgimpmath = $(top_builddir)/libgimpmath/libgimpmath-$(GIMP_API_VERSION).la $(libm)
+
+libtinyscheme=tinyscheme/libtinyscheme.a $(libm)
+libftx=ftx/libftx.a
+
+if HAVE_WINDRES
+include $(top_srcdir)/build/windows/gimprc-plug-ins.rule
+script_fu_RC = script-fu.rc.o
+endif
+
+AM_CPPFLAGS = \
+	-I$(top_srcdir)		\
+	$(GTK_CFLAGS)		\
+	$(GEGL_CFLAGS)		\
+	-I$(includedir)		\
+	-DSTANDALONE=0		\
+	-DUSE_INTERFACE=1	\
+	-DUSE_STRLWR=0
+
+AM_CFLAGS = \
+	$(xobjective_c)
+
+AM_CXXFLAGS = \
+	$(xobjective_cxx)
+
+AM_LDFLAGS = \
+	$(mwindows)		\
+	$(framework_cocoa)	\
+	$(xnone)
+
+SUBDIRS = tinyscheme ftx scripts
+
+
+libexecdir = $(gimpplugindir)/plug-ins/script-fu
+
+libexec_PROGRAMS = script-fu
+
+script_fu_SOURCES = \
+	script-fu-types.h		\
+	script-fu-enums.h		\
+	\
+	script-fu.c			\
+	script-fu-console.c		\
+	script-fu-console.h		\
+	script-fu-eval.c		\
+	script-fu-eval.h		\
+	script-fu-interface.c		\
+	script-fu-interface.h		\
+	script-fu-text-console.h	\
+	script-fu-text-console.c	\
+	script-fu-intl.h		\
+	script-fu-regex.c		\
+	script-fu-regex.h		\
+	script-fu-script.c		\
+	script-fu-script.h		\
+	script-fu-scripts.c		\
+	script-fu-scripts.h		\
+	script-fu-server.c		\
+	script-fu-server.h		\
+	script-fu-utils.c		\
+	script-fu-utils.h		\
+	scheme-wrapper.c		\
+	scheme-wrapper.h
+
+LDADD = \
+	$(libgimpui)		\
+	$(libgimpwidgets)	\
+	$(libgimpconfig)	\
+	$(libgimpmath)		\
+	$(libgimp)		\
+	$(libgimpcolor)		\
+	$(libgimpbase)		\
+	$(libtinyscheme)	\
+	$(libftx)		\
+	$(GTK_LIBS)		\
+	$(SOCKET_LIBS)		\
+	$(WINSOCK_LIBS)		\
+	$(RT_LIBS)		\
+	$(INTLLIBS)		\
+	$(script_fu_RC)
+
+
+# Perform static analysis on all *.scm files and look for usage of
+# deprecated pdb procedures
+check-for-deprecated-procedures-in-script-fu:
+	@echo "Looking for deprecated procedures in *.scm files"
+	@scm_files=`find $(top_srcdir)/plug-ins/script-fu -name "*.scm"`;       \
+	deprecated_procs=`$(top_builddir)/app/gimp-$(GIMP_APP_VERSION)$(EXEEXT) --dump-pdb-procedures-deprecated`; \
+	for scm_file in $$scm_files; do                                         \
+	  for proc in $$deprecated_procs; do                                    \
+	    if grep -Eq "^([^;]*[[:blank:](])?$$proc([[:blank:])]|$$)" $$scm_file; then \
+	      echo "$${scm_file} uses deprecated procedure '$${proc}'";         \
+	    fi                                                                  \
+	  done                                                                  \
+	done
diff --git a/plug-ins/script-fu/Makefile.in b/plug-ins/script-fu/Makefile.in
new file mode 100644
index 0000000..493b4f7
--- /dev/null
+++ b/plug-ins/script-fu/Makefile.in
@@ -0,0 +1,1225 @@
+# Makefile.in generated by automake 1.16.3 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2020 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
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+
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+}
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+@PLATFORM_OSX_TRUE@xobjective_c = "-xobjective-c"
+@PLATFORM_OSX_TRUE@xobjective_cxx = "-xobjective-c++"
+@PLATFORM_OSX_TRUE@xnone = "-xnone"
+@PLATFORM_OSX_TRUE@framework_cocoa = -framework Cocoa
+@OS_WIN32_TRUE@mwindows = -mwindows
+@OS_WIN32_TRUE@WINSOCK_LIBS = -lws2_32
+@OS_WIN32_FALSE@libm = -lm
+libgimpui = $(top_builddir)/libgimp/libgimpui-$(GIMP_API_VERSION).la
+libgimpwidgets = $(top_builddir)/libgimpwidgets/libgimpwidgets-$(GIMP_API_VERSION).la
+libgimp = $(top_builddir)/libgimp/libgimp-$(GIMP_API_VERSION).la
+libgimpcolor = $(top_builddir)/libgimpcolor/libgimpcolor-$(GIMP_API_VERSION).la
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+libgimpmath = $(top_builddir)/libgimpmath/libgimpmath-$(GIMP_API_VERSION).la $(libm)
+libtinyscheme = tinyscheme/libtinyscheme.a $(libm)
+libftx = ftx/libftx.a
+@HAVE_WINDRES_TRUE@GIMPPLUGINRC = $(top_builddir)/build/windows/gimp-plug-ins.rc
+@HAVE_WINDRES_TRUE@script_fu_RC = script-fu.rc.o
+AM_CPPFLAGS = \
+	-I$(top_srcdir)		\
+	$(GTK_CFLAGS)		\
+	$(GEGL_CFLAGS)		\
+	-I$(includedir)		\
+	-DSTANDALONE=0		\
+	-DUSE_INTERFACE=1	\
+	-DUSE_STRLWR=0
+
+AM_CFLAGS = \
+	$(xobjective_c)
+
+AM_CXXFLAGS = \
+	$(xobjective_cxx)
+
+AM_LDFLAGS = \
+	$(mwindows)		\
+	$(framework_cocoa)	\
+	$(xnone)
+
+SUBDIRS = tinyscheme ftx scripts
+script_fu_SOURCES = \
+	script-fu-types.h		\
+	script-fu-enums.h		\
+	\
+	script-fu.c			\
+	script-fu-console.c		\
+	script-fu-console.h		\
+	script-fu-eval.c		\
+	script-fu-eval.h		\
+	script-fu-interface.c		\
+	script-fu-interface.h		\
+	script-fu-text-console.h	\
+	script-fu-text-console.c	\
+	script-fu-intl.h		\
+	script-fu-regex.c		\
+	script-fu-regex.h		\
+	script-fu-script.c		\
+	script-fu-script.h		\
+	script-fu-scripts.c		\
+	script-fu-scripts.h		\
+	script-fu-server.c		\
+	script-fu-server.h		\
+	script-fu-utils.c		\
+	script-fu-utils.h		\
+	scheme-wrapper.c		\
+	scheme-wrapper.h
+
+LDADD = \
+	$(libgimpui)		\
+	$(libgimpwidgets)	\
+	$(libgimpconfig)	\
+	$(libgimpmath)		\
+	$(libgimp)		\
+	$(libgimpcolor)		\
+	$(libgimpbase)		\
+	$(libtinyscheme)	\
+	$(libftx)		\
+	$(GTK_LIBS)		\
+	$(SOCKET_LIBS)		\
+	$(WINSOCK_LIBS)		\
+	$(RT_LIBS)		\
+	$(INTLLIBS)		\
+	$(script_fu_RC)
+
+all: all-recursive
+
+.SUFFIXES:
+.SUFFIXES: .c .lo .o .obj
+$(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ $(srcdir)/Makefile.am $(top_srcdir)/build/windows/gimprc-plug-ins.rule $(am__configure_deps)
+	@for dep in $?; do \
+	  case '$(am__configure_deps)' in \
+	    *$$dep*) \
+	      ( cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh ) \
+	        && { if test -f $@; then exit 0; else break; fi; }; \
+	      exit 1;; \
+	  esac; \
+	done; \
+	echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnu plug-ins/script-fu/Makefile'; \
+	$(am__cd) $(top_srcdir) && \
+	  $(AUTOMAKE) --gnu plug-ins/script-fu/Makefile
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
+	@case '$?' in \
+	  *config.status*) \
+	    cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
+	  *) \
+	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__maybe_remake_depfiles)'; \
+	    cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__maybe_remake_depfiles);; \
+	esac;
+$(top_srcdir)/build/windows/gimprc-plug-ins.rule $(am__empty):
+
+$(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+
+$(top_srcdir)/configure: @MAINTAINER_MODE_TRUE@ $(am__configure_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(ACLOCAL_M4): @MAINTAINER_MODE_TRUE@ $(am__aclocal_m4_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(am__aclocal_m4_deps):
+install-libexecPROGRAMS: $(libexec_PROGRAMS)
+	@$(NORMAL_INSTALL)
+	@list='$(libexec_PROGRAMS)'; test -n "$(libexecdir)" || list=; \
+	if test -n "$$list"; then \
+	  echo " $(MKDIR_P) '$(DESTDIR)$(libexecdir)'"; \
+	  $(MKDIR_P) "$(DESTDIR)$(libexecdir)" || exit 1; \
+	fi; \
+	for p in $$list; do echo "$$p $$p"; done | \
+	sed 's/$(EXEEXT)$$//' | \
+	while read p p1; do if test -f $$p \
+	 || test -f $$p1 \
+	  ; then echo "$$p"; echo "$$p"; else :; fi; \
+	done | \
+	sed -e 'p;s,.*/,,;n;h' \
+	    -e 's|.*|.|' \
+	    -e 'p;x;s,.*/,,;s/$(EXEEXT)$$//;$(transform);s/$$/$(EXEEXT)/' | \
+	sed 'N;N;N;s,\n, ,g' | \
+	$(AWK) 'BEGIN { files["."] = ""; dirs["."] = 1 } \
+	  { d=$$3; if (dirs[d] != 1) { print "d", d; dirs[d] = 1 } \
+	    if ($$2 == $$4) files[d] = files[d] " " $$1; \
+	    else { print "f", $$3 "/" $$4, $$1; } } \
+	  END { for (d in files) print "f", d, files[d] }' | \
+	while read type dir files; do \
+	    if test "$$dir" = .; then dir=; else dir=/$$dir; fi; \
+	    test -z "$$files" || { \
+	    echo " $(INSTALL_PROGRAM_ENV) $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=install $(INSTALL_PROGRAM) $$files '$(DESTDIR)$(libexecdir)$$dir'"; \
+	    $(INSTALL_PROGRAM_ENV) $(LIBTOOL) $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=install $(INSTALL_PROGRAM) $$files "$(DESTDIR)$(libexecdir)$$dir" || exit $$?; \
+	    } \
+	; done
+
+uninstall-libexecPROGRAMS:
+	@$(NORMAL_UNINSTALL)
+	@list='$(libexec_PROGRAMS)'; test -n "$(libexecdir)" || list=; \
+	files=`for p in $$list; do echo "$$p"; done | \
+	  sed -e 'h;s,^.*/,,;s/$(EXEEXT)$$//;$(transform)' \
+	      -e 's/$$/$(EXEEXT)/' \
+	`; \
+	test -n "$$list" || exit 0; \
+	echo " ( cd '$(DESTDIR)$(libexecdir)' && rm -f" $$files ")"; \
+	cd "$(DESTDIR)$(libexecdir)" && rm -f $$files
+
+clean-libexecPROGRAMS:
+	@list='$(libexec_PROGRAMS)'; test -n "$$list" || exit 0; \
+	echo " rm -f" $$list; \
+	rm -f $$list || exit $$?; \
+	test -n "$(EXEEXT)" || exit 0; \
+	list=`for p in $$list; do echo "$$p"; done | sed 's/$(EXEEXT)$$//'`; \
+	echo " rm -f" $$list; \
+	rm -f $$list
+
+script-fu$(EXEEXT): $(script_fu_OBJECTS) $(script_fu_DEPENDENCIES) $(EXTRA_script_fu_DEPENDENCIES) 
+	@rm -f script-fu$(EXEEXT)
+	$(AM_V_CCLD)$(LINK) $(script_fu_OBJECTS) $(script_fu_LDADD) $(LIBS)
+
+mostlyclean-compile:
+	-rm -f *.$(OBJEXT)
+
+distclean-compile:
+	-rm -f *.tab.c
+
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/scheme-wrapper.Po@am__quote@ # am--include-marker
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+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
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+	-rm -f ./$(DEPDIR)/script-fu-eval.Po
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+.PRECIOUS: Makefile
+
+
+# `windres` seems a very stupid tool and it breaks with double shlashes
+# in parameter paths. Strengthen the rule a little.
+@HAVE_WINDRES_TRUE@%.rc.o:
+@HAVE_WINDRES_TRUE@	$(WINDRES) --define ORIGINALFILENAME_STR="$*$(EXEEXT)" \
+@HAVE_WINDRES_TRUE@		--define INTERNALNAME_STR="$*" \
+@HAVE_WINDRES_TRUE@		--define TOP_SRCDIR="`echo $(top_srcdir) | sed 's*//*/*'`" \
+@HAVE_WINDRES_TRUE@		-I"`echo $(top_srcdir)/app | sed 's%/\+%/%'`" \
+@HAVE_WINDRES_TRUE@		-I"`echo $(top_builddir)/app | sed 's%/\+%/%'`"\
+@HAVE_WINDRES_TRUE@		-I"`echo $(top_builddir) | sed 's%/\+%/%'`"\
+@HAVE_WINDRES_TRUE@		$(GIMPPLUGINRC) $@
+
+# Perform static analysis on all *.scm files and look for usage of
+# deprecated pdb procedures
+check-for-deprecated-procedures-in-script-fu:
+	@echo "Looking for deprecated procedures in *.scm files"
+	@scm_files=`find $(top_srcdir)/plug-ins/script-fu -name "*.scm"`;       \
+	deprecated_procs=`$(top_builddir)/app/gimp-$(GIMP_APP_VERSION)$(EXEEXT) --dump-pdb-procedures-deprecated`; \
+	for scm_file in $$scm_files; do                                         \
+	  for proc in $$deprecated_procs; do                                    \
+	    if grep -Eq "^([^;]*[[:blank:](])?$$proc([[:blank:])]|$$)" $$scm_file; then \
+	      echo "$${scm_file} uses deprecated procedure '$${proc}'";         \
+	    fi                                                                  \
+	  done                                                                  \
+	done
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/plug-ins/script-fu/ftx/LICENSE b/plug-ins/script-fu/ftx/LICENSE
new file mode 100644
index 0000000..e820d87
--- /dev/null
+++ b/plug-ins/script-fu/ftx/LICENSE
@@ -0,0 +1,31 @@
+                         LICENSE TERMS
+
+(c) 2002 Manuel Heras-Gilsanz (manuel@heras-gilsanz.com)
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+
+Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+
+Neither the name of Manuel Heras-Gilsanz nor the names of the
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR 
+CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
+EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 
+PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 
+PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 
+LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 
+NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/plug-ins/script-fu/ftx/Makefile.am b/plug-ins/script-fu/ftx/Makefile.am
new file mode 100644
index 0000000..46537bf
--- /dev/null
+++ b/plug-ins/script-fu/ftx/Makefile.am
@@ -0,0 +1,16 @@
+## Process this file with automake to produce Makefile.in
+
+AM_CFLAGS = \
+	-DUSE_INTERFACE=1	\
+	-I$(srcdir)/..		\
+	$(GLIB_CFLAGS)
+
+noinst_LIBRARIES = libftx.a
+
+libftx_a_SOURCES = ftx.c ftx.h
+
+EXTRA_DIST = \
+	LICENSE			\
+	README			\
+	ftx-functions.txt	\
+	listhome.scm
diff --git a/plug-ins/script-fu/ftx/Makefile.in b/plug-ins/script-fu/ftx/Makefile.in
new file mode 100644
index 0000000..e71d6ae
--- /dev/null
+++ b/plug-ins/script-fu/ftx/Makefile.in
@@ -0,0 +1,912 @@
+# Makefile.in generated by automake 1.16.3 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2020 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
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+# with or without modifications, as long as this notice is preserved.
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+# This program is distributed in the hope that it will be useful,
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+
+@SET_MAKE@
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+  elif test -n '$(MAKE_HOST)'; then \
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+    true; \
+  else \
+    false; \
+  fi; \
+}
+am__make_running_with_option = \
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+	  if test -f "$$i"; then \
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diff --git a/plug-ins/script-fu/ftx/README b/plug-ins/script-fu/ftx/README
new file mode 100644
index 0000000..c20b215
--- /dev/null
+++ b/plug-ins/script-fu/ftx/README
@@ -0,0 +1,99 @@
+TinyScheme Extensions (TSX) 1.1  [September, 2002]
+(c) 2002 Manuel Heras-Gilsanz (manuel@heras-gilsanz.com)
+
+This software is subject to the license terms contained in the
+LICENSE file.
+
+Changelog:
+1.1 (Sept. 2002) Updated to tinyscheme 1.31
+1.0 (April 2002) First released version
+
+
+WHAT IS TSX?
+
+TinyScheme Extensions is a set of dynamic libraries incorporating
+additional funcionality to TinyScheme, a lightweight
+implementation of the Scheme programming language. TinyScheme
+(http://tinyscheme.sourceforge.net) is maintained by D. Souflis
+(dsouflis@acm.org), and is based on MiniSCHEME version 0.85k4.
+
+Scheme is a very nice and powerful programming language, but the
+basic language is very minimalistic in terms of library functions;
+only basic file input / output functionality is specified.
+Different implementations of the language (MIT Scheme, GUILE,
+Bigloo...) provide their own extension libraries. TSX attempts to
+provide commonly needed functions at a small cost in terms of
+additional program footprint. The library is modularized, so that
+it is possible (and easy!) to select desired functionality via
+#defines in tsx.h.
+
+
+INSTALLATION
+
+TSX has been tested on GNU/Linux 2.4.2 with gcc 2.96 and
+libc-2.2.2, with TinyScheme 1.31.
+
+To install, copy the distribution file to the directory
+where TinyScheme is installed (and where scheme.h lies),
+and run make. If building succeeds, a file called tsx.so
+should be created. This file can be loaded as a TinyScheme
+extension with 
+
+    (load-extension "tsx-1.0/tsx")
+
+After loading TSX, you can make use of its functions.
+To reduce footprint, you can choose the functionality which
+will be included. To do so, have a look at tsx.h and
+comment the #defines for unneeded modules.
+
+If you get compiler errors, make sure you have enabled
+dynamic modules in your tinyscheme runtime (define USE_DL
+somewhere near the top in scheme.h).
+
+
+SAMPLE APPLICATIONS
+
+Three sample applications are distributed with TSX 1.0.
+The code is not particularly elegant, nor written in proper
+functional style, but is provided for illustration of the
+implemented calls.
+
+-smtp.scm
+    Sends an email to the user getting the username from
+    the USER shell variable, connecting to the SMTP port
+    on the local machine.
+
+-listhome.scm
+    Provides a list of all the files on the user's home
+    directory (obtained with the HOME environment variable).
+
+-srepl.scm
+    Provides a socket-based read-eval-print-loop. It listens
+    for connections on the 9000 port of the local machines,
+    and executes the commands received. To test it, run
+
+        telnet localhost 9000
+
+    after starting the sample application, and type Scheme
+    expressions. You will get the evaluations. To exit the
+    session, type "quit" and TinyScheme will exit, closing
+    the socket. The output of some functions will not
+    be the same as you would obtain on TinyScheme's
+    "command line", because standard output is not
+    redirected to the socket, but most commands work ok.
+
+You should copy these applications to the directory where
+TinyScheme is installed (i.e., where the "scheme" binary
+file resides), and can be run with:
+
+    ./scheme listhome.scm
+    ./scheme smtp.scm
+    ./scheme srepl.scm
+
+
+TSX FUNCTIONS
+
+The extension functions implemented by TinyScheme Extensions are
+documented in the file "tsx-functions.txt".
+
+END
diff --git a/plug-ins/script-fu/ftx/ftx-functions.txt b/plug-ins/script-fu/ftx/ftx-functions.txt
new file mode 100644
index 0000000..5365bc5
--- /dev/null
+++ b/plug-ins/script-fu/ftx/ftx-functions.txt
@@ -0,0 +1,119 @@
+File and Time Extensions for TinyScheme (FTX) 1.0  [August, 2004]
+
+Based on the TinyScheme Extensions (TSX) 1.1  [September, 2002]
+(c) 2002 Manuel Heras-Gilsanz (manuel@heras-gilsanz.com)
+
+This software is subject to the license terms contained in the
+LICENSE file.
+
+
+TSX FUNCTIONS
+
+TSX incorporates the following functions:
+
+*File system (included if HAVE_FILESYSTEM is defined in tsx.h)
+
+Scheme already defines functions to read and write files. These
+functions allow access to the filesystem to check if a certain
+file exists, to get its size, etc.
+
+In addition to these functions, a string constant DIR-SEPARATOR
+has been defined. It should be used in scripts which build file
+names that include one or more directories to keep the scripts
+portable to different operating systems.
+
+(file-exists? filename)
+        filename: string
+
+        This function returns #t if the indicated file exists, and
+        #f if it does not exist or if it is not accessible to the
+        requesting user. Accessibility is based on the real user
+        and group ID rather than the effective user ID and group ID.
+
+(file-type filename)
+        filename: string
+
+        This function returns a value based on the file type. It
+        returns FILE_TYPE_FILE (1) for regular files, FILE_TYPE_DIR
+        (2) for directories, and FILE_TYPE_LINK (3) for symbolic
+        links. The value FILE_TYPE_OTHER (0) is returned if the file
+        is of some other type, does not exist, or if the user does
+        not have sufficient privileges to allow the file type to be
+        determined.
+
+(file-size filename)
+        filename: string
+
+        This function returns the size (in bytes) of the
+        indicated file, or #f if the file does not exists or
+        is not accessible to the requesting user.
+
+(file-delete filename)
+        filename: string
+
+        Removes the specified file. It returns #t if the operation
+        succeeds, or #f otherwise (e.g., because the file is
+        read-only, or because the file does not exist).
+
+(dir-open-stream path)
+        path: string
+
+        Opens a "directory stream" on the provided directory path.
+        This stream will provide all the files within the directory,
+        using the function read-dir-entry. The stream should be closed
+        at the end with dir-close-stream.
+
+(dir-read-entry dirstream)
+        dirstream: directory stream, obtained with dir-open-stream.
+
+        It returns the name of the following directory entry, or eof
+        if all the entries were provided. Check the return value with
+        with eof-object?.
+
+(dir-rewind dirstream)
+        dirstream: directory stream, obtained with dir-open-stream.
+
+        Resets the given directory stream. The next call to dir-read-entry
+        will return the first entry again. It returns #t if the operation
+        succeeds, or #f otherwise (ie. dirstream not valid)..
+
+(dir-close-stream dirstream) 
+        dirstream: directory stream, obtained with dir-open-stream.
+
+        Close directory stream. No further calls to read-dir-entry should
+        be performed.
+
+(dir-make dirname . mode)
+       dirname: string
+       mode: integer representing permissions
+
+       Create the directory specified, setting the directory permissions based
+       upon the optional mode argument (taking into account the current
+       umask). If no mode is specified then use the default (umask)
+       permissions. Returns #t if the operation succeeds, otherwise #f.
+       Possible reasons for failure are that the directory already exists,
+       the user is not authorized to create it, or the mode is incorrectly
+       specified).
+
+*Time (available if HAVE_TIME is defined in tsx.h)
+
+(time)
+        Returns the current local time, as a list of integer
+        containing:
+          (year month day-of-month hour min sec millisec)
+        The year is expressed as an offset from 1900.
+
+(gettimeofday)
+        Returns a list containing the number of seconds from
+        the beginning of the day, and microseconds within the
+        current second.
+
+(usleep microsec)
+        microsec: integer
+
+        Suspends execution of the calling thread during the
+        specified number of microseconds.
+
+
+END
+
diff --git a/plug-ins/script-fu/ftx/ftx.c b/plug-ins/script-fu/ftx/ftx.c
new file mode 100644
index 0000000..f9de1bf
--- /dev/null
+++ b/plug-ins/script-fu/ftx/ftx.c
@@ -0,0 +1,415 @@
+/* TinyScheme Extensions
+ * (c) 2002 Visual Tools, S.A.
+ * Manuel Heras-Gilsanz (manuel@heras-gilsanz.com)
+ *
+ * This software is subject to the terms stated in the
+ * LICENSE file.
+ */
+
+#include "config.h"
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#if HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#include <time.h>
+
+#include <glib.h>
+
+#include "tinyscheme/scheme-private.h"
+
+#undef cons
+
+typedef enum
+{
+  FILE_TYPE_UNKNOWN = 0, FILE_TYPE_FILE, FILE_TYPE_DIR, FILE_TYPE_LINK
+} FileType;
+
+struct
+named_constant {
+    const char *name;
+    FileType    value;
+};
+
+struct named_constant
+file_type_constants[] = {
+    { "FILE-TYPE-UNKNOWN", FILE_TYPE_UNKNOWN },
+    { "FILE-TYPE-FILE",    FILE_TYPE_FILE },
+    { "FILE-TYPE-DIR",     FILE_TYPE_DIR },
+    { "FILE-TYPE-LINK",    FILE_TYPE_LINK },
+    { NULL, 0 }
+};
+
+pointer foreign_fileexists(scheme *sc, pointer args);
+pointer foreign_filetype(scheme *sc, pointer args);
+pointer foreign_filesize(scheme *sc, pointer args);
+pointer foreign_filedelete(scheme *sc, pointer args);
+pointer foreign_diropenstream(scheme *sc, pointer args);
+pointer foreign_dirreadentry(scheme *sc, pointer args);
+pointer foreign_dirrewind(scheme *sc, pointer args);
+pointer foreign_dirclosestream(scheme *sc, pointer args);
+pointer foreign_mkdir(scheme *sc, pointer args);
+
+pointer foreign_getenv(scheme *sc, pointer args);
+pointer foreign_time(scheme *sc, pointer args);
+pointer foreign_gettimeofday(scheme *sc, pointer args);
+pointer foreign_usleep(scheme *sc, pointer args);
+void    init_ftx (scheme *sc);
+
+
+pointer foreign_fileexists(scheme *sc, pointer args)
+{
+  pointer first_arg;
+  char   *filename;
+
+  if (args == sc->NIL)
+    return sc->F;
+
+  first_arg = sc->vptr->pair_car(args);
+  if (!sc->vptr->is_string(first_arg))
+    return sc->F;
+
+  filename = sc->vptr->string_value(first_arg);
+  filename = g_filename_from_utf8 (filename, -1, NULL, NULL, NULL);
+  if (g_file_test(filename, G_FILE_TEST_EXISTS))
+    return sc->T;
+
+  return sc->F;
+}
+
+pointer foreign_filetype(scheme *sc, pointer args)
+{
+  pointer first_arg;
+  char   *filename;
+  int     retcode;
+
+  if (args == sc->NIL)
+    return sc->F;
+
+  first_arg = sc->vptr->pair_car(args);
+  if (!sc->vptr->is_string(first_arg))
+    return sc->F;
+
+  filename = sc->vptr->string_value(first_arg);
+  filename = g_filename_from_utf8 (filename, -1, NULL, NULL, NULL);
+
+  if (g_file_test(filename, G_FILE_TEST_IS_SYMLINK))
+    retcode =  FILE_TYPE_LINK;
+  else if (g_file_test(filename, G_FILE_TEST_IS_REGULAR))
+    retcode = FILE_TYPE_FILE;
+  else if (g_file_test(filename, G_FILE_TEST_IS_DIR))
+    retcode = FILE_TYPE_DIR;
+  else
+    retcode = FILE_TYPE_UNKNOWN;
+
+  return sc->vptr->mk_integer(sc, retcode);
+}
+
+pointer foreign_filesize(scheme *sc, pointer args)
+{
+  pointer first_arg;
+  pointer ret;
+  struct stat buf;
+  char * filename;
+  int retcode;
+
+  if (args == sc->NIL)
+    return sc->F;
+
+  first_arg = sc->vptr->pair_car(args);
+  if (!sc->vptr->is_string(first_arg))
+    return sc->F;
+
+  filename = sc->vptr->string_value(first_arg);
+  filename = g_filename_from_utf8 (filename, -1, NULL, NULL, NULL);
+  retcode = stat(filename, &buf);
+  if (retcode == 0)
+    ret = sc->vptr->mk_integer(sc,buf.st_size);
+  else
+    ret = sc->F;
+  return ret;
+}
+
+pointer foreign_filedelete(scheme *sc, pointer args)
+{
+  pointer first_arg;
+  pointer ret;
+  char * filename;
+  int retcode;
+
+  if (args == sc->NIL)
+    return sc->F;
+
+  first_arg = sc->vptr->pair_car(args);
+  if (!sc->vptr->is_string(first_arg)) {
+    return sc->F;
+  }
+
+  filename = sc->vptr->string_value(first_arg);
+  filename = g_filename_from_utf8 (filename, -1, NULL, NULL, NULL);
+  retcode = unlink(filename);
+  if (retcode == 0)
+    ret = sc->T;
+  else
+    ret = sc->F;
+  return ret;
+}
+
+pointer foreign_diropenstream(scheme *sc, pointer args)
+{
+  pointer first_arg;
+  char   *dirpath;
+  GDir   *dir;
+
+  if (args == sc->NIL)
+    return sc->F;
+
+  first_arg = sc->vptr->pair_car(args);
+  if (!sc->vptr->is_string(first_arg))
+    return sc->F;
+
+  dirpath = sc->vptr->string_value(first_arg);
+  dirpath = g_filename_from_utf8 (dirpath, -1, NULL, NULL, NULL);
+
+  dir = g_dir_open(dirpath, 0, NULL);
+  if (dir == NULL)
+    return sc->F;
+
+  /* Stuffing a pointer in a long may not always be portable ~~~~~ */
+  return (sc->vptr->mk_integer(sc, (long) dir));
+}
+
+pointer foreign_dirreadentry(scheme *sc, pointer args)
+{
+  pointer first_arg;
+  GDir   *dir;
+  gchar  *entry;
+
+  if (args == sc->NIL)
+    return sc->F;
+
+  first_arg = sc->vptr->pair_car(args);
+  if (!sc->vptr->is_integer(first_arg))
+    return sc->F;
+
+  dir = (GDir *) sc->vptr->ivalue(first_arg);
+  if (dir == NULL)
+    return sc->F;
+
+  entry = (gchar *)g_dir_read_name(dir);
+  if (entry == NULL)
+    return sc->EOF_OBJ;
+
+  entry = g_filename_to_utf8 (entry, -1, NULL, NULL, NULL);
+  return (sc->vptr->mk_string(sc, entry));
+}
+
+pointer foreign_dirrewind(scheme *sc, pointer args)
+{
+  pointer first_arg;
+  GDir   *dir;
+
+  if (args == sc->NIL)
+    return sc->F;
+
+  first_arg = sc->vptr->pair_car(args);
+  if (!sc->vptr->is_integer(first_arg))
+    return sc->F;
+
+  dir = (GDir *) sc->vptr->ivalue(first_arg);
+  if (dir == NULL)
+    return sc->F;
+
+  g_dir_rewind(dir);
+  return sc->T;
+}
+
+pointer foreign_dirclosestream(scheme *sc, pointer args)
+{
+  pointer first_arg;
+  GDir   *dir;
+
+  if (args == sc->NIL)
+    return sc->F;
+
+  first_arg = sc->vptr->pair_car(args);
+  if (!sc->vptr->is_integer(first_arg))
+    return sc->F;
+
+  dir = (GDir *) sc->vptr->ivalue(first_arg);
+  if (dir == NULL)
+    return sc->F;
+
+  g_dir_close(dir);
+  return sc->T;
+}
+
+pointer foreign_mkdir(scheme *sc, pointer args)
+{
+  pointer     first_arg;
+  pointer     rest;
+  pointer     second_arg;
+  char       *dirname;
+  mode_t      mode;
+  int         retcode;
+
+  if (args == sc->NIL)
+    return sc->F;
+
+  first_arg = sc->vptr->pair_car(args);
+  if (!sc->vptr->is_string(first_arg))
+    return sc->F;
+  dirname = sc->vptr->string_value(first_arg);
+  dirname = g_filename_from_utf8 (dirname, -1, NULL, NULL, NULL);
+
+  rest = sc->vptr->pair_cdr(args);
+  if (sc->vptr->is_pair(rest)) /* optional mode argument */
+    {
+      second_arg = sc->vptr->pair_car(rest);
+      if (!sc->vptr->is_integer(second_arg))
+        return sc->F;
+      mode = sc->vptr->ivalue(second_arg);
+    }
+  else
+    mode = 0777;
+
+  retcode = g_mkdir(dirname, (mode_t)mode);
+  if (retcode == 0)
+    return sc->T;
+  else
+    return sc->F;
+}
+
+pointer foreign_getenv(scheme *sc, pointer args)
+{
+  pointer     first_arg;
+  pointer     ret;
+  char       *varname;
+  const char *value;
+
+  if (args == sc->NIL)
+    return sc->F;
+
+  first_arg = sc->vptr->pair_car(args);
+
+  if (!sc->vptr->is_string(first_arg))
+    return sc->F;
+
+  varname = sc->vptr->string_value(first_arg);
+  value = g_getenv(varname);
+  if (value == NULL)
+    ret = sc->F;
+  else
+    ret = sc->vptr->mk_string(sc,value);
+
+  return ret;
+}
+
+pointer foreign_time(scheme *sc, pointer args)
+{
+  time_t now;
+  struct tm *now_tm;
+  pointer ret;
+
+  if (args != sc->NIL)
+    return sc->F;
+
+  time(&now);
+  now_tm = localtime(&now);
+
+  ret = sc->vptr->cons(sc, sc->vptr->mk_integer(sc,(long) now_tm->tm_year),
+         sc->vptr->cons(sc, sc->vptr->mk_integer(sc,(long) now_tm->tm_mon),
+          sc->vptr->cons(sc, sc->vptr->mk_integer(sc,(long) now_tm->tm_mday),
+           sc->vptr->cons(sc, sc->vptr->mk_integer(sc,(long) now_tm->tm_hour),
+            sc->vptr->cons(sc, sc->vptr->mk_integer(sc,(long) now_tm->tm_min),
+             sc->vptr->cons(sc, sc->vptr->mk_integer(sc,(long) now_tm->tm_sec),sc->NIL))))));
+
+  return ret;
+}
+
+pointer foreign_gettimeofday(scheme *sc, pointer args)
+{
+  pointer ret;
+  gint64  time;
+
+  time = g_get_real_time ();
+
+  ret = sc->vptr->cons(sc, sc->vptr->mk_integer(sc,(long) time / G_USEC_PER_SEC),
+         sc->vptr->cons(sc, sc->vptr->mk_integer(sc,(long) time % G_USEC_PER_SEC),
+          sc->NIL));
+
+  return ret;
+}
+
+pointer foreign_usleep(scheme *sc, pointer args)
+{
+  pointer first_arg;
+  long usec;
+
+  if (args == sc->NIL)
+    return sc->F;
+
+  first_arg = sc->vptr->pair_car(args);
+  if (!sc->vptr->is_integer(first_arg))
+    return sc->F;
+
+  usec = sc->vptr->ivalue(first_arg);
+  g_usleep(usec);
+
+  return sc->T;
+}
+
+/* This function gets called when TinyScheme is loading the extension */
+void init_ftx (scheme *sc)
+{
+  int i;
+
+  sc->vptr->scheme_define(sc,sc->global_env,
+                               sc->vptr->mk_symbol(sc,"getenv"),
+                               sc->vptr->mk_foreign_func(sc, foreign_getenv));
+  sc->vptr->scheme_define(sc, sc->global_env,
+                               sc->vptr->mk_symbol(sc,"time"),
+                               sc->vptr->mk_foreign_func(sc, foreign_time));
+  sc->vptr->scheme_define(sc, sc->global_env,
+                               sc->vptr->mk_symbol(sc,"gettimeofday"),
+                               sc->vptr->mk_foreign_func(sc, foreign_gettimeofday));
+  sc->vptr->scheme_define(sc, sc->global_env,
+                               sc->vptr->mk_symbol(sc,"usleep"),
+                               sc->vptr->mk_foreign_func(sc, foreign_usleep));
+
+  sc->vptr->scheme_define(sc, sc->global_env,
+                               sc->vptr->mk_symbol(sc,"file-exists?"),
+                               sc->vptr->mk_foreign_func(sc, foreign_fileexists));
+  sc->vptr->scheme_define(sc, sc->global_env,
+                               sc->vptr->mk_symbol(sc,"file-type"),
+                               sc->vptr->mk_foreign_func(sc, foreign_filetype));
+  sc->vptr->scheme_define(sc, sc->global_env,
+                               sc->vptr->mk_symbol(sc,"file-size"),
+                               sc->vptr->mk_foreign_func(sc, foreign_filesize));
+  sc->vptr->scheme_define(sc, sc->global_env,
+                               sc->vptr->mk_symbol(sc,"file-delete"),
+                               sc->vptr->mk_foreign_func(sc, foreign_filedelete));
+  sc->vptr->scheme_define(sc, sc->global_env,
+                               sc->vptr->mk_symbol(sc,"dir-open-stream"),
+                               sc->vptr->mk_foreign_func(sc, foreign_diropenstream));
+  sc->vptr->scheme_define(sc, sc->global_env,
+                               sc->vptr->mk_symbol(sc,"dir-read-entry"),
+                               sc->vptr->mk_foreign_func(sc, foreign_dirreadentry));
+  sc->vptr->scheme_define(sc, sc->global_env,
+                               sc->vptr->mk_symbol(sc,"dir-rewind"),
+                               sc->vptr->mk_foreign_func(sc, foreign_dirrewind));
+  sc->vptr->scheme_define(sc, sc->global_env,
+                               sc->vptr->mk_symbol(sc,"dir-close-stream"),
+                               sc->vptr->mk_foreign_func(sc, foreign_dirclosestream));
+  sc->vptr->scheme_define(sc, sc->global_env,
+                               sc->vptr->mk_symbol(sc,"dir-make"),
+                               sc->vptr->mk_foreign_func(sc, foreign_mkdir));
+
+  for (i = 0; file_type_constants[i].name != NULL; ++i)
+  {
+      sc->vptr->scheme_define(sc, sc->global_env,
+            sc->vptr->mk_symbol(sc, file_type_constants[i].name),
+            sc->vptr->mk_integer(sc, file_type_constants[i].value));
+  }
+}
diff --git a/plug-ins/script-fu/ftx/ftx.h b/plug-ins/script-fu/ftx/ftx.h
new file mode 100644
index 0000000..f40c30d
--- /dev/null
+++ b/plug-ins/script-fu/ftx/ftx.h
@@ -0,0 +1,2 @@
+/* This function gets called when TinyScheme is initializing the extension */
+void init_ftx (scheme *sc);
diff --git a/plug-ins/script-fu/ftx/listhome.scm b/plug-ins/script-fu/ftx/listhome.scm
new file mode 100644
index 0000000..1fa8d14
--- /dev/null
+++ b/plug-ins/script-fu/ftx/listhome.scm
@@ -0,0 +1,58 @@
+; listhome.scm
+; Sample usage of TinyScheme Extension
+; This simple program lists the directory entries on the
+; user's home directory.
+
+; It uses the following TinyScheme Extension functions:
+;    getenv
+;      Used to get HOME environment variable.
+;    open-dir-stream
+;      Used to open directory stream.
+;    read-dir-entry
+;      Used to read directory entries.
+;    close-dir-entry
+;      Used at the end, to close directory stream when done.
+
+; check that extensions are enabled
+(if (not (defined? 'load-extension))
+    (begin
+      (display "TinyScheme has extensions disabled. Enable them!!")
+      (newline)
+      (quit)))
+
+; load TinyScheme extension
+(load-extension "tsx-1.1/tsx")
+
+; check that the necessary functions are available (the user
+; might have removed some functionality...)
+(if (or
+      (not (defined? 'getenv))
+      (not (defined? 'dir-open-stream))
+      (not (defined? 'dir-read-entry))
+      (not (defined? 'dir-close-stream)))
+    (begin
+      (display "Some necessary functions are not available. Exiting!")
+      (newline)
+      (quit)))
+
+; get user's home dir from HOME environment var
+(define homedir (getenv "HOME"))
+(display "Listing contents of ") (display homedir) (newline)
+
+; create directory stream to read dir entries
+(define dirstream (dir-open-stream homedir))
+(if (not dirstream)
+  (begin
+    (display "Unable to open home directory!! Check value of HOME environment var.")
+    (quit)))
+
+(let listentry ((entry (dir-read-entry dirstream)))
+  (if (eof-object? entry)
+    #t
+    (begin
+      (display entry)
+      (newline)
+      (listentry (dir-read-entry dirstream)))))
+
+(dir-close-stream dirstream)
+
diff --git a/plug-ins/script-fu/scheme-wrapper.c b/plug-ins/script-fu/scheme-wrapper.c
new file mode 100644
index 0000000..69e22c0
--- /dev/null
+++ b/plug-ins/script-fu/scheme-wrapper.c
@@ -0,0 +1,1671 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#if 0
+#define DEBUG_MARSHALL 0  /* No need to define this until you need it */
+#define DEBUG_SCRIPTS  0
+#endif
+
+#include "config.h"
+
+#include <string.h>
+
+#include <glib/gstdio.h>
+
+#include <gtk/gtk.h>
+
+#include "libgimp/gimp.h"
+
+#include "tinyscheme/scheme-private.h"
+#if USE_DL
+#include "tinyscheme/dynload.h"
+#endif
+#include "ftx/ftx.h"
+
+#include "script-fu-types.h"
+
+#include "script-fu-console.h"
+#include "script-fu-interface.h"
+#include "script-fu-regex.h"
+#include "script-fu-scripts.h"
+#include "script-fu-server.h"
+
+#include "scheme-wrapper.h"
+
+
+#undef cons
+
+static void     ts_init_constants                           (scheme    *sc);
+static void     ts_init_enum                                (scheme    *sc,
+                                                             GType      enum_type);
+static void     ts_init_procedures                          (scheme    *sc,
+                                                             gboolean   register_scipts);
+static void     convert_string                              (gchar     *str);
+static pointer  script_fu_marshal_procedure_call            (scheme    *sc,
+                                                             pointer    a,
+                                                             gboolean   permissive);
+static pointer  script_fu_marshal_procedure_call_strict     (scheme    *sc,
+                                                             pointer    a);
+static pointer  script_fu_marshal_procedure_call_permissive (scheme    *sc,
+                                                             pointer    a);
+static void     script_fu_marshal_destroy_args              (GimpParam *params,
+                                                             gint       n_params);
+
+static pointer  script_fu_register_call                     (scheme    *sc,
+                                                             pointer    a);
+static pointer  script_fu_menu_register_call                (scheme    *sc,
+                                                             pointer    a);
+static pointer  script_fu_quit_call                         (scheme    *sc,
+                                                             pointer    a);
+static pointer  script_fu_nil_call                          (scheme    *sc,
+                                                             pointer    a);
+
+static gboolean ts_load_file                                (const gchar *dirname,
+                                                             const gchar *basename);
+
+typedef struct
+{
+  const gchar *name;
+  gint         value;
+} NamedConstant;
+
+static const NamedConstant script_constants[] =
+{
+  /* Useful values from libgimpbase/gimplimits.h */
+  { "MIN-IMAGE-SIZE", GIMP_MIN_IMAGE_SIZE },
+  { "MAX-IMAGE-SIZE", GIMP_MAX_IMAGE_SIZE },
+  { "MIN-RESOLUTION", GIMP_MIN_RESOLUTION },
+  { "MAX-RESOLUTION", GIMP_MAX_RESOLUTION },
+
+  /* Useful misc stuff */
+  { "TRUE",           TRUE  },
+  { "FALSE",          FALSE },
+
+  /* Builtin units */
+  { "UNIT-PIXEL",     GIMP_UNIT_PIXEL },
+  { "UNIT-INCH",      GIMP_UNIT_INCH  },
+  { "UNIT-MM",        GIMP_UNIT_MM    },
+  { "UNIT-POINT",     GIMP_UNIT_POINT },
+  { "UNIT-PICA",      GIMP_UNIT_PICA  },
+
+  /* Script-Fu types */
+  { "SF-IMAGE",       SF_IMAGE      },
+  { "SF-DRAWABLE",    SF_DRAWABLE   },
+  { "SF-LAYER",       SF_LAYER      },
+  { "SF-CHANNEL",     SF_CHANNEL    },
+  { "SF-VECTORS",     SF_VECTORS    },
+  { "SF-COLOR",       SF_COLOR      },
+  { "SF-TOGGLE",      SF_TOGGLE     },
+  { "SF-VALUE",       SF_VALUE      },
+  { "SF-STRING",      SF_STRING     },
+  { "SF-FILENAME",    SF_FILENAME   },
+  { "SF-DIRNAME",     SF_DIRNAME    },
+  { "SF-ADJUSTMENT",  SF_ADJUSTMENT },
+  { "SF-FONT",        SF_FONT       },
+  { "SF-PATTERN",     SF_PATTERN    },
+  { "SF-BRUSH",       SF_BRUSH      },
+  { "SF-GRADIENT",    SF_GRADIENT   },
+  { "SF-OPTION",      SF_OPTION     },
+  { "SF-PALETTE",     SF_PALETTE    },
+  { "SF-TEXT",        SF_TEXT       },
+  { "SF-ENUM",        SF_ENUM       },
+  { "SF-DISPLAY",     SF_DISPLAY    },
+
+  /* For SF-ADJUSTMENT */
+  { "SF-SLIDER",      SF_SLIDER     },
+  { "SF-SPINNER",     SF_SPINNER    },
+
+  { NULL, 0 }
+};
+
+
+static scheme sc;
+
+
+void
+tinyscheme_init (GList    *path,
+                 gboolean  register_scripts)
+{
+  /* init the interpreter */
+  if (! scheme_init (&sc))
+    {
+      g_message ("Could not initialize TinyScheme!");
+      return;
+    }
+
+  scheme_set_input_port_file (&sc, stdin);
+  scheme_set_output_port_file (&sc, stdout);
+  ts_register_output_func (ts_stdout_output_func, NULL);
+
+  /* Initialize the TinyScheme extensions */
+  init_ftx (&sc);
+  script_fu_regex_init (&sc);
+
+  /* register in the interpreter the gimp functions and types. */
+  ts_init_constants (&sc);
+  ts_init_procedures (&sc, register_scripts);
+
+  if (path)
+    {
+      GList *list;
+
+      for (list = path; list; list = g_list_next (list))
+        {
+          gchar *dir = g_file_get_path (list->data);
+
+          if (ts_load_file (dir, "script-fu.init"))
+            {
+              /*  To improve compatibility with older Script-Fu scripts,
+               *  load script-fu-compat.init from the same directory.
+               */
+              ts_load_file (dir, "script-fu-compat.init");
+
+              /*  To improve compatibility with older GIMP version,
+               *  load plug-in-compat.init from the same directory.
+               */
+              ts_load_file (dir, "plug-in-compat.init");
+
+              g_free (dir);
+
+              break;
+            }
+
+          g_free (dir);
+        }
+
+      if (list == NULL)
+        g_printerr ("Unable to read initialization file script-fu.init\n");
+    }
+}
+
+/* Create an SF-RUN-MODE constant for use in scripts.
+ * It is set to the run mode state determined by GIMP.
+ */
+void
+ts_set_run_mode (GimpRunMode run_mode)
+{
+  pointer symbol;
+
+  symbol = sc.vptr->mk_symbol (&sc, "SF-RUN-MODE");
+  sc.vptr->scheme_define (&sc, sc.global_env, symbol,
+                          sc.vptr->mk_integer (&sc, run_mode));
+  sc.vptr->setimmutable (symbol);
+}
+
+void
+ts_set_print_flag (gint print_flag)
+{
+  sc.print_output = print_flag;
+}
+
+void
+ts_print_welcome (void)
+{
+  ts_output_string (TS_OUTPUT_NORMAL,
+                    "Welcome to TinyScheme, Version 1.40\n", -1);
+  ts_output_string (TS_OUTPUT_NORMAL,
+                    "Copyright (c) Dimitrios Souflis\n", -1);
+}
+
+void
+ts_interpret_stdin (void)
+{
+  scheme_load_file (&sc, stdin);
+}
+
+gint
+ts_interpret_string (const gchar *expr)
+{
+#if DEBUG_SCRIPTS
+  sc.print_output = 1;
+  sc.tracing = 1;
+#endif
+
+  sc.vptr->load_string (&sc, (char *) expr);
+
+  return sc.retcode;
+}
+
+const gchar *
+ts_get_success_msg (void)
+{
+  if (sc.vptr->is_string (sc.value))
+    return sc.vptr->string_value (sc.value);
+
+  return "Success";
+}
+
+void
+ts_stdout_output_func (TsOutputType  type,
+                       const char   *string,
+                       int           len,
+                       gpointer      user_data)
+{
+  if (len < 0)
+    len = strlen (string);
+  fprintf (stdout, "%.*s", len, string);
+  fflush (stdout);
+}
+
+void
+ts_gstring_output_func (TsOutputType  type,
+                        const char   *string,
+                        int           len,
+                        gpointer      user_data)
+{
+  GString *gstr = (GString *) user_data;
+
+  g_string_append_len (gstr, string, len);
+}
+
+
+/*  private functions  */
+
+/*
+ * Below can be found the functions responsible for registering the
+ * gimp functions and types against the scheme interpreter.
+ */
+static void
+ts_init_constants (scheme *sc)
+{
+  const gchar **enum_type_names;
+  gint          n_enum_type_names;
+  gint          i;
+  pointer       symbol;
+  GQuark        quark;
+
+  symbol = sc->vptr->mk_symbol (sc, "gimp-directory");
+  sc->vptr->scheme_define (sc, sc->global_env, symbol,
+                           sc->vptr->mk_string (sc, gimp_directory ()));
+  sc->vptr->setimmutable (symbol);
+
+  symbol = sc->vptr->mk_symbol (sc, "gimp-data-directory");
+  sc->vptr->scheme_define (sc, sc->global_env, symbol,
+                           sc->vptr->mk_string (sc, gimp_data_directory ()));
+  sc->vptr->setimmutable (symbol);
+
+  symbol = sc->vptr->mk_symbol (sc, "gimp-plug-in-directory");
+  sc->vptr->scheme_define (sc, sc->global_env, symbol,
+                           sc->vptr->mk_string (sc, gimp_plug_in_directory ()));
+  sc->vptr->setimmutable (symbol);
+
+  symbol = sc->vptr->mk_symbol (sc, "gimp-locale-directory");
+  sc->vptr->scheme_define (sc, sc->global_env, symbol,
+                           sc->vptr->mk_string (sc, gimp_locale_directory ()));
+  sc->vptr->setimmutable (symbol);
+
+  symbol = sc->vptr->mk_symbol (sc, "gimp-sysconf-directory");
+  sc->vptr->scheme_define (sc, sc->global_env, symbol,
+                           sc->vptr->mk_string (sc, gimp_sysconf_directory ()));
+  sc->vptr->setimmutable (symbol);
+
+  enum_type_names = gimp_enums_get_type_names (&n_enum_type_names);
+  quark           = g_quark_from_static_string ("gimp-compat-enum");
+
+  for (i = 0; i < n_enum_type_names; i++)
+    {
+      const gchar *enum_name  = enum_type_names[i];
+      GType        enum_type  = g_type_from_name (enum_name);
+
+      ts_init_enum (sc, enum_type);
+
+      enum_type = (GType) g_type_get_qdata (enum_type, quark);
+
+      if (enum_type)
+        ts_init_enum (sc, enum_type);
+    }
+
+  /* Constants used in the register block of scripts */
+  for (i = 0; script_constants[i].name != NULL; ++i)
+    {
+      symbol = sc->vptr->mk_symbol (sc, script_constants[i].name);
+      sc->vptr->scheme_define (sc, sc->global_env, symbol,
+                               sc->vptr->mk_integer (sc,
+                                                     script_constants[i].value));
+      sc->vptr->setimmutable (symbol);
+    }
+
+  /* Define string constant for use in building paths to files/directories */
+  symbol = sc->vptr->mk_symbol (sc, "DIR-SEPARATOR");
+  sc->vptr->scheme_define (sc, sc->global_env, symbol,
+                           sc->vptr->mk_string (sc, G_DIR_SEPARATOR_S));
+  sc->vptr->setimmutable (symbol);
+
+  /* Define string constant for use in building search paths */
+  symbol = sc->vptr->mk_symbol (sc, "SEARCHPATH-SEPARATOR");
+  sc->vptr->scheme_define (sc, sc->global_env, symbol,
+                           sc->vptr->mk_string (sc, G_SEARCHPATH_SEPARATOR_S));
+  sc->vptr->setimmutable (symbol);
+
+  /* These constants are deprecated and will be removed at a later date. */
+  symbol = sc->vptr->mk_symbol (sc, "gimp-dir");
+  sc->vptr->scheme_define (sc, sc->global_env, symbol,
+                           sc->vptr->mk_string (sc, gimp_directory ()));
+  sc->vptr->setimmutable (symbol);
+
+  symbol = sc->vptr->mk_symbol (sc, "gimp-data-dir");
+  sc->vptr->scheme_define (sc, sc->global_env, symbol,
+                           sc->vptr->mk_string (sc, gimp_data_directory ()));
+  sc->vptr->setimmutable (symbol);
+
+  symbol = sc->vptr->mk_symbol (sc, "gimp-plugin-dir");
+  sc->vptr->scheme_define (sc, sc->global_env, symbol,
+                           sc->vptr->mk_string (sc, gimp_plug_in_directory ()));
+  sc->vptr->setimmutable (symbol);
+}
+
+static void
+ts_init_enum (scheme *sc,
+              GType   enum_type)
+{
+  GEnumClass  *enum_class = g_type_class_ref (enum_type);
+  GEnumValue  *value;
+
+  for (value = enum_class->values; value->value_name; value++)
+    {
+      if (g_str_has_prefix (value->value_name, "GIMP_"))
+        {
+          gchar   *scheme_name;
+          pointer  symbol;
+
+          scheme_name = g_strdup (value->value_name + strlen ("GIMP_"));
+          convert_string (scheme_name);
+
+          symbol = sc->vptr->mk_symbol (sc, scheme_name);
+          sc->vptr->scheme_define (sc, sc->global_env, symbol,
+                                   sc->vptr->mk_integer (sc, value->value));
+          sc->vptr->setimmutable (symbol);
+
+          g_free (scheme_name);
+        }
+    }
+
+  g_type_class_unref (enum_class);
+}
+
+static void
+ts_init_procedures (scheme   *sc,
+                    gboolean  register_scripts)
+{
+  gchar   **proc_list;
+  gint      num_procs;
+  gint      i;
+  pointer   symbol;
+
+#if USE_DL
+  symbol = sc->vptr->mk_symbol (sc,"load-extension");
+  sc->vptr->scheme_define (sc, sc->global_env, symbol,
+                           sc->vptr->mk_foreign_func (sc, scm_load_ext));
+  sc->vptr->setimmutable (symbol);
+#endif
+
+  symbol = sc->vptr->mk_symbol (sc, "script-fu-register");
+  sc->vptr->scheme_define (sc, sc->global_env, symbol,
+                           sc->vptr->mk_foreign_func (sc,
+                                                      register_scripts ?
+                                                      script_fu_register_call :
+                                                      script_fu_nil_call));
+  sc->vptr->setimmutable (symbol);
+
+  symbol = sc->vptr->mk_symbol (sc, "script-fu-menu-register");
+  sc->vptr->scheme_define (sc, sc->global_env, symbol,
+                           sc->vptr->mk_foreign_func (sc,
+                                                      register_scripts ?
+                                                      script_fu_menu_register_call :
+                                                      script_fu_nil_call));
+  sc->vptr->setimmutable (symbol);
+
+  symbol = sc->vptr->mk_symbol (sc, "script-fu-quit");
+  sc->vptr->scheme_define (sc, sc->global_env, symbol,
+                           sc->vptr->mk_foreign_func (sc, script_fu_quit_call));
+  sc->vptr->setimmutable (symbol);
+
+  /*  register the database execution procedure  */
+  symbol = sc->vptr->mk_symbol (sc, "gimp-proc-db-call");
+  sc->vptr->scheme_define (sc, sc->global_env, symbol,
+                           sc->vptr->mk_foreign_func (sc,
+                                                      script_fu_marshal_procedure_call_strict));
+  sc->vptr->setimmutable (symbol);
+
+  /*  register the internal database execution procedure; see comment below  */
+  symbol = sc->vptr->mk_symbol (sc, "-gimp-proc-db-call");
+  sc->vptr->scheme_define (sc, sc->global_env, symbol,
+                           sc->vptr->mk_foreign_func (sc,
+                                                      script_fu_marshal_procedure_call_permissive));
+  sc->vptr->setimmutable (symbol);
+
+  gimp_procedural_db_query (".*", ".*", ".*", ".*", ".*", ".*", ".*",
+                            &num_procs, &proc_list);
+
+  /*  Register each procedure as a scheme func  */
+  for (i = 0; i < num_procs; i++)
+    {
+      gchar *buff;
+
+      /* Build a define that will call the foreign function.
+       * The Scheme statement was suggested by Simon Budig.
+       *
+       * We call the procedure through -gimp-proc-db-call, which is a more
+       * permissive version of gimp-proc-db-call, that accepts (and ignores)
+       * any number of arguments for nullary procedures, for backward
+       * compatibility.
+       */
+      buff = g_strdup_printf (" (define (%s . args)"
+                              " (apply -gimp-proc-db-call \"%s\" args))",
+                              proc_list[i], proc_list[i]);
+
+      /*  Execute the 'define'  */
+      sc->vptr->load_string (sc, buff);
+
+      g_free (buff);
+    }
+
+  g_strfreev (proc_list);
+}
+
+static gboolean
+ts_load_file (const gchar *dirname,
+              const gchar *basename)
+{
+  gchar *filename;
+  FILE  *fin;
+
+  filename = g_build_filename (dirname, basename, NULL);
+
+  fin = g_fopen (filename, "rb");
+
+  g_free (filename);
+
+  if (fin)
+    {
+      scheme_load_file (&sc, fin);
+      fclose (fin);
+
+      return TRUE;
+    }
+
+  return FALSE;
+}
+
+static void
+convert_string (gchar *str)
+{
+  while (*str)
+    {
+      if (*str == '_') *str = '-';
+      str++;
+    }
+}
+
+/* This is called by the Scheme interpreter to allow calls to GIMP functions */
+static pointer
+script_fu_marshal_procedure_call (scheme   *sc,
+                                  pointer   a,
+                                  gboolean  permissive)
+{
+  GimpParam       *args;
+  GimpParam       *values = NULL;
+  gint             nvalues;
+  gchar           *proc_name;
+  gchar           *proc_blurb;
+  gchar           *proc_help;
+  gchar           *proc_author;
+  gchar           *proc_copyright;
+  gchar           *proc_date;
+  GimpPDBProcType  proc_type;
+  gint             nparams;
+  gint             nreturn_vals;
+  GimpParamDef    *params;
+  GimpParamDef    *return_vals;
+  gchar            error_str[1024];
+  gint             i;
+  gint             success = TRUE;
+  pointer          return_val = sc->NIL;
+
+#if DEBUG_MARSHALL
+/* These three #defines are from Tinyscheme (tinyscheme/scheme.c) */
+#define T_MASKTYPE  31
+#define typeflag(p) ((p)->_flag)
+#define type(p)     (typeflag(p)&T_MASKTYPE)
+
+  static const char *ts_types[] =
+  {
+    "T_NONE",
+    "T_STRING",    "T_NUMBER",     "T_SYMBOL",       "T_PROC",
+    "T_PAIR",      "T_CLOSURE",    "T_CONTINUATION", "T_FOREIGN",
+    "T_CHARACTER", "T_PORT",       "T_VECTOR",       "T_MACRO",
+    "T_PROMISE",   "T_ENVIRONMENT","T_ARRAY"
+  };
+
+  g_printerr ("\nIn %s()\n", G_STRFUNC);
+#endif
+
+  /*  Make sure there are arguments  */
+  if (a == sc->NIL)
+    return foreign_error (sc,
+                          "Procedure argument marshaller was called with no arguments. "
+                          "The procedure to be executed and the arguments it requires "
+                          "(possibly none) must be specified.", 0);
+
+  /*  The PDB procedure name is the argument or first argument of the list  */
+  if (sc->vptr->is_pair (a))
+    proc_name = g_strdup (sc->vptr->string_value (sc->vptr->pair_car (a)));
+  else
+    proc_name = g_strdup (sc->vptr->string_value (a));
+
+#ifdef DEBUG_MARSHALL
+  g_printerr ("  proc name: %s\n", proc_name);
+  g_printerr ("  parms rcvd: %d\n", sc->vptr->list_length (sc, a)-1);
+#endif
+
+  /*  report the current command  */
+  script_fu_interface_report_cc (proc_name);
+
+  /*  Attempt to fetch the procedure from the database  */
+  if (! gimp_procedural_db_proc_info (proc_name,
+                                      &proc_blurb,
+                                      &proc_help,
+                                      &proc_author,
+                                      &proc_copyright,
+                                      &proc_date,
+                                      &proc_type,
+                                      &nparams, &nreturn_vals,
+                                      &params, &return_vals))
+    {
+#ifdef DEBUG_MARSHALL
+      g_printerr ("  Invalid procedure name\n");
+#endif
+      g_snprintf (error_str, sizeof (error_str),
+                  "Invalid procedure name %s specified", proc_name);
+      return foreign_error (sc, error_str, 0);
+    }
+
+  /* Free the name and the description which are of no use here.  */
+  for (i = 0; i < nparams; i++)
+    {
+      g_free (params[i].name);
+      g_free (params[i].description);
+    }
+  for (i = 0; i < nreturn_vals; i++)
+    {
+      g_free (return_vals[i].name);
+      g_free (return_vals[i].description);
+    }
+
+  /*  Check the supplied number of arguments  */
+  if ((nparams > 0 || ! permissive) &&
+      (sc->vptr->list_length (sc, a) - 1) != nparams)
+    {
+#if DEBUG_MARSHALL
+      g_printerr ("  Invalid number of arguments (expected %d but received %d)",
+                  nparams, (sc->vptr->list_length (sc, a) - 1));
+#endif
+      g_snprintf (error_str, sizeof (error_str),
+                  "Invalid number of arguments for %s (expected %d but received %d)",
+                  proc_name, nparams, (sc->vptr->list_length (sc, a) - 1));
+      return foreign_error (sc, error_str, 0);
+    }
+
+  /*  Marshall the supplied arguments  */
+  if (nparams)
+    args = g_new (GimpParam, nparams);
+  else
+    args = NULL;
+
+  for (i = 0; i < nparams; i++)
+    {
+      gint32  n_elements;
+      pointer vector;
+      gint    j;
+
+      a = sc->vptr->pair_cdr (a);
+
+#if DEBUG_MARSHALL
+      {
+        const gchar *type_name;
+
+        gimp_enum_get_value (GIMP_TYPE_PDB_ARG_TYPE,
+                             params[i].type,
+                             &type_name, NULL, NULL, NULL);
+
+        g_printerr ("    param %d - expecting type %s (%d)\n",
+                    i + 1, type_name, params[i].type);
+        g_printerr ("      passed arg is type %s (%d)\n",
+                    ts_types[ type(sc->vptr->pair_car (a)) ],
+                    type(sc->vptr->pair_car (a)));
+      }
+#endif
+
+      args[i].type = params[i].type;
+
+      switch (params[i].type)
+        {
+        case GIMP_PDB_INT32:
+        case GIMP_PDB_DISPLAY:
+        case GIMP_PDB_IMAGE:
+        case GIMP_PDB_ITEM:
+        case GIMP_PDB_LAYER:
+        case GIMP_PDB_CHANNEL:
+        case GIMP_PDB_DRAWABLE:
+        case GIMP_PDB_SELECTION:
+        case GIMP_PDB_VECTORS:
+          if (!sc->vptr->is_number (sc->vptr->pair_car (a)))
+            success = FALSE;
+          if (success)
+            {
+              args[i].data.d_int32 = sc->vptr->ivalue (sc->vptr->pair_car (a));
+#if DEBUG_MARSHALL
+              g_printerr ("      int32 arg is '%d'\n", args[i].data.d_int32);
+#endif
+            }
+          break;
+
+        case GIMP_PDB_INT16:
+          if (!sc->vptr->is_number (sc->vptr->pair_car (a)))
+            success = FALSE;
+          if (success)
+            {
+              args[i].data.d_int16 = (gint16) sc->vptr->ivalue (sc->vptr->pair_car (a));
+#if DEBUG_MARSHALL
+              g_printerr ("      int16 arg is '%d'\n", args[i].data.d_int16);
+#endif
+            }
+          break;
+
+        case GIMP_PDB_INT8:
+          if (!sc->vptr->is_number (sc->vptr->pair_car (a)))
+            success = FALSE;
+          if (success)
+            {
+              args[i].data.d_int8 = (guint8) sc->vptr->ivalue (sc->vptr->pair_car (a));
+#if DEBUG_MARSHALL
+              g_printerr ("      int8 arg is '%u'\n", args[i].data.d_int8);
+#endif
+            }
+          break;
+
+        case GIMP_PDB_FLOAT:
+          if (!sc->vptr->is_number (sc->vptr->pair_car (a)))
+            success = FALSE;
+          if (success)
+            {
+              args[i].data.d_float = sc->vptr->rvalue (sc->vptr->pair_car (a));
+#if DEBUG_MARSHALL
+              g_printerr ("      float arg is '%f'\n", args[i].data.d_float);
+#endif
+            }
+          break;
+
+        case GIMP_PDB_STRING:
+          if (!sc->vptr->is_string (sc->vptr->pair_car (a)))
+            success = FALSE;
+          if (success)
+            {
+              args[i].data.d_string = sc->vptr->string_value (sc->vptr->pair_car (a));
+#if DEBUG_MARSHALL
+              g_printerr ("      string arg is '%s'\n", args[i].data.d_string);
+#endif
+            }
+          break;
+
+        case GIMP_PDB_INT32ARRAY:
+          vector = sc->vptr->pair_car (a);
+          if (!sc->vptr->is_vector (vector))
+            success = FALSE;
+          if (success)
+            {
+              n_elements = args[i-1].data.d_int32;
+              if (n_elements < 0 ||
+                  n_elements > sc->vptr->vector_length (vector))
+                {
+                  g_snprintf (error_str, sizeof (error_str),
+                              "INT32 vector (argument %d) for function %s has "
+                              "size of %ld but expected size of %d",
+                              i+1, proc_name,
+                              sc->vptr->vector_length (vector), n_elements);
+                  return foreign_error (sc, error_str, 0);
+                }
+
+              args[i].data.d_int32array = g_new (gint32, n_elements);
+
+              for (j = 0; j < n_elements; j++)
+                {
+                  pointer v_element = sc->vptr->vector_elem (vector, j);
+
+                  /* FIXME: Check values in vector stay within range for each type. */
+                  if (!sc->vptr->is_number (v_element))
+                    {
+                      g_snprintf (error_str, sizeof (error_str),
+                                  "Item %d in vector is not a number (argument %d for function %s)",
+                                  j+1, i+1, proc_name);
+                      return foreign_error (sc, error_str, vector);
+                    }
+
+                  args[i].data.d_int32array[j] =
+                      (gint32) sc->vptr->ivalue (v_element);
+                }
+
+#if DEBUG_MARSHALL
+              {
+                glong count = sc->vptr->vector_length (vector);
+                g_printerr ("      int32 vector has %ld elements\n", count);
+                if (count > 0)
+                  {
+                    g_printerr ("     ");
+                    for (j = 0; j < count; ++j)
+                      g_printerr (" %ld",
+                                  sc->vptr->ivalue ( sc->vptr->vector_elem (vector, j) ));
+                    g_printerr ("\n");
+                  }
+              }
+#endif
+            }
+          break;
+
+        case GIMP_PDB_INT16ARRAY:
+          vector = sc->vptr->pair_car (a);
+          if (!sc->vptr->is_vector (vector))
+            success = FALSE;
+          if (success)
+            {
+              n_elements = args[i-1].data.d_int32;
+              if (n_elements < 0 || n_elements > sc->vptr->vector_length (vector))
+                {
+                  g_snprintf (error_str, sizeof (error_str),
+                              "INT16 vector (argument %d) for function %s has "
+                              "size of %ld but expected size of %d",
+                              i+1, proc_name, sc->vptr->vector_length (vector), n_elements);
+                  return foreign_error (sc, error_str, 0);
+                }
+
+              args[i].data.d_int16array = g_new (gint16, n_elements);
+
+              for (j = 0; j < n_elements; j++)
+                {
+                  pointer v_element = sc->vptr->vector_elem (vector, j);
+
+                  if (!sc->vptr->is_number (v_element))
+                    {
+                      g_snprintf (error_str, sizeof (error_str),
+                                  "Item %d in vector is not a number (argument %d for function %s)",
+                                  j+1, i+1, proc_name);
+                      return foreign_error (sc, error_str, vector);
+                    }
+
+                  args[i].data.d_int16array[j] =
+                      (gint16) sc->vptr->ivalue (v_element);
+                }
+
+#if DEBUG_MARSHALL
+              {
+                glong count = sc->vptr->vector_length (vector);
+                g_printerr ("      int16 vector has %ld elements\n", count);
+                if (count > 0)
+                  {
+                    g_printerr ("     ");
+                    for (j = 0; j < count; ++j)
+                      g_printerr (" %ld",
+                                  sc->vptr->ivalue ( sc->vptr->vector_elem (vector, j) ));
+                    g_printerr ("\n");
+                  }
+              }
+#endif
+            }
+          break;
+
+        case GIMP_PDB_INT8ARRAY:
+          vector = sc->vptr->pair_car (a);
+          if (!sc->vptr->is_vector (vector))
+            success = FALSE;
+          if (success)
+            {
+              n_elements = args[i-1].data.d_int32;
+              if (n_elements < 0 ||
+                  n_elements > sc->vptr->vector_length (vector))
+                {
+                  g_snprintf (error_str, sizeof (error_str),
+                              "INT8 vector (argument %d) for function %s has "
+                              "size of %ld but expected size of %d",
+                              i+1, proc_name,
+                              sc->vptr->vector_length (vector), n_elements);
+                  return foreign_error (sc, error_str, 0);
+                }
+
+              args[i].data.d_int8array = g_new (guint8, n_elements);
+
+              for (j = 0; j < n_elements; j++)
+                {
+                  pointer v_element = sc->vptr->vector_elem (vector, j);
+
+                  if (!sc->vptr->is_number (v_element))
+                    {
+                      g_snprintf (error_str, sizeof (error_str),
+                                  "Item %d in vector is not a number (argument %d for function %s)",
+                                  j+1, i+1, proc_name);
+                      return foreign_error (sc, error_str, vector);
+                    }
+
+                  args[i].data.d_int8array[j] =
+                      (guint8) sc->vptr->ivalue (v_element);
+                }
+
+#if DEBUG_MARSHALL
+              {
+                glong count = sc->vptr->vector_length (vector);
+                g_printerr ("      int8 vector has %ld elements\n", count);
+                if (count > 0)
+                  {
+                    g_printerr ("     ");
+                    for (j = 0; j < count; ++j)
+                      g_printerr (" %ld",
+                                  sc->vptr->ivalue ( sc->vptr->vector_elem (vector, j) ));
+                    g_printerr ("\n");
+                  }
+              }
+#endif
+            }
+          break;
+
+        case GIMP_PDB_FLOATARRAY:
+          vector = sc->vptr->pair_car (a);
+          if (!sc->vptr->is_vector (vector))
+            success = FALSE;
+          if (success)
+            {
+              n_elements = args[i-1].data.d_int32;
+              if (n_elements < 0 ||
+                  n_elements > sc->vptr->vector_length (vector))
+                {
+                  g_snprintf (error_str, sizeof (error_str),
+                              "FLOAT vector (argument %d) for function %s has "
+                              "size of %ld but expected size of %d",
+                              i+1, proc_name,
+                              sc->vptr->vector_length (vector), n_elements);
+                  return foreign_error (sc, error_str, 0);
+                }
+
+              args[i].data.d_floatarray = g_new (gdouble, n_elements);
+
+              for (j = 0; j < n_elements; j++)
+                {
+                  pointer v_element = sc->vptr->vector_elem (vector, j);
+
+                  if (!sc->vptr->is_number (v_element))
+                    {
+                      g_snprintf (error_str, sizeof (error_str),
+                                  "Item %d in vector is not a number (argument %d for function %s)",
+                                  j+1, i+1, proc_name);
+                      return foreign_error (sc, error_str, vector);
+                    }
+
+                  args[i].data.d_floatarray[j] =
+                      (gfloat) sc->vptr->rvalue (v_element);
+                }
+
+#if DEBUG_MARSHALL
+              {
+                glong count = sc->vptr->vector_length (vector);
+                g_printerr ("      float vector has %ld elements\n", count);
+                if (count > 0)
+                  {
+                    g_printerr ("     ");
+                    for (j = 0; j < count; ++j)
+                      g_printerr (" %f",
+                                  sc->vptr->rvalue ( sc->vptr->vector_elem (vector, j) ));
+                    g_printerr ("\n");
+                  }
+              }
+#endif
+            }
+          break;
+
+        case GIMP_PDB_STRINGARRAY:
+          vector = sc->vptr->pair_car (a);  /* vector is pointing to a list */
+          if (!sc->vptr->is_list (sc, vector))
+            success = FALSE;
+          if (success)
+            {
+              n_elements = args[i - 1].data.d_int32;
+              if (n_elements < 0 ||
+                  n_elements > sc->vptr->list_length (sc, vector))
+                {
+                  g_snprintf (error_str, sizeof (error_str),
+                              "STRING vector (argument %d) for function %s has "
+                              "length of %d but expected length of %d",
+                              i+1, proc_name,
+                              sc->vptr->list_length (sc, vector), n_elements);
+                  return foreign_error (sc, error_str, 0);
+                }
+
+              args[i].data.d_stringarray = g_new (gchar *, n_elements);
+
+              for (j = 0; j < n_elements; j++)
+                {
+                  pointer v_element = sc->vptr->pair_car (vector);
+
+                  if (!sc->vptr->is_string (v_element))
+                    {
+                      g_snprintf (error_str, sizeof (error_str),
+                                  "Item %d in vector is not a string (argument %d for function %s)",
+                                  j+1, i+1, proc_name);
+                      return foreign_error (sc, error_str, vector);
+                    }
+
+                  args[i].data.d_stringarray[j] =
+                      (gchar *) sc->vptr->string_value (v_element);
+
+                  vector = sc->vptr->pair_cdr (vector);
+                }
+
+#if DEBUG_MARSHALL
+              {
+                glong count = sc->vptr->list_length ( sc, sc->vptr->pair_car (a) );
+                g_printerr ("      string vector has %ld elements\n", count);
+                if (count > 0)
+                  {
+                    g_printerr ("     ");
+                    for (j = 0; j < count; ++j)
+                      g_printerr (" \"%s\"",
+                                  args[i].data.d_stringarray[j]);
+                    g_printerr ("\n");
+                  }
+              }
+#endif
+            }
+          break;
+
+        case GIMP_PDB_COLOR:
+          if (sc->vptr->is_string (sc->vptr->pair_car (a)))
+            {
+              if (! gimp_rgb_parse_css (&args[i].data.d_color,
+                                        sc->vptr->string_value (sc->vptr->pair_car (a)),
+                                        -1))
+                success = FALSE;
+
+              gimp_rgb_set_alpha (&args[i].data.d_color, 1.0);
+#if DEBUG_MARSHALL
+              g_printerr ("      (%s)\n",
+                          sc->vptr->string_value (sc->vptr->pair_car (a)));
+#endif
+            }
+          else if (sc->vptr->is_list (sc, sc->vptr->pair_car (a)) &&
+                   sc->vptr->list_length (sc, sc->vptr->pair_car (a)) == 3)
+            {
+              pointer color_list;
+              guchar  r = 0, g = 0, b = 0;
+
+              color_list = sc->vptr->pair_car (a);
+              if (sc->vptr->is_number (sc->vptr->pair_car (color_list)))
+                r = CLAMP (sc->vptr->ivalue (sc->vptr->pair_car (color_list)),
+                           0, 255);
+              else
+                success = FALSE;
+
+              color_list = sc->vptr->pair_cdr (color_list);
+              if (sc->vptr->is_number (sc->vptr->pair_car (color_list)))
+                g = CLAMP (sc->vptr->ivalue (sc->vptr->pair_car (color_list)),
+                           0, 255);
+              else
+                success = FALSE;
+
+              color_list = sc->vptr->pair_cdr (color_list);
+              if (sc->vptr->is_number (sc->vptr->pair_car (color_list)))
+                b = CLAMP (sc->vptr->ivalue (sc->vptr->pair_car (color_list)),
+                           0, 255);
+              else
+                success = FALSE;
+
+              if (success)
+                gimp_rgba_set_uchar (&args[i].data.d_color, r, g, b, 255);
+#if DEBUG_MARSHALL
+              if (success)
+                g_printerr ("      (%d %d %d)\n", r, g, b);
+              else
+                g_printerr ("      COLOR list contains non-numbers\n");
+#endif
+            }
+          else
+            {
+              success = FALSE;
+            }
+          break;
+
+        case GIMP_PDB_COLORARRAY:
+          vector = sc->vptr->pair_car (a);
+          if (!sc->vptr->is_vector (vector))
+            success = FALSE;
+          if (success)
+            {
+              n_elements = args[i-1].data.d_int32;
+              if (n_elements < 0 ||
+                  n_elements > sc->vptr->vector_length (vector))
+                {
+                  g_snprintf (error_str, sizeof (error_str),
+                              "COLOR vector (argument %d) for function %s has "
+                              "size of %ld but expected size of %d",
+                              i+1, proc_name,
+                              sc->vptr->vector_length (vector), n_elements);
+                  return foreign_error (sc, error_str, 0);
+                }
+
+              args[i].data.d_colorarray = g_new (GimpRGB, n_elements);
+
+              for (j = 0; j < n_elements; j++)
+                {
+                  pointer v_element = sc->vptr->vector_elem (vector, j);
+                  pointer color_list;
+                  guchar  r, g, b;
+
+                  if (! (sc->vptr->is_list (sc,
+                                            sc->vptr->pair_car (v_element)) &&
+                         sc->vptr->list_length (sc,
+                                                sc->vptr->pair_car (v_element)) == 3))
+                    {
+                      g_snprintf (error_str, sizeof (error_str),
+                                  "Item %d in vector is not a color "
+                                  "(argument %d for function %s)",
+                                  j+1, i+1, proc_name);
+                      return foreign_error (sc, error_str, vector);
+                    }
+
+                  color_list = sc->vptr->pair_car (v_element);
+                  r = CLAMP (sc->vptr->ivalue (sc->vptr->pair_car (color_list)),
+                             0, 255);
+                  color_list = sc->vptr->pair_cdr (color_list);
+                  g = CLAMP (sc->vptr->ivalue (sc->vptr->pair_car (color_list)),
+                             0, 255);
+                  color_list = sc->vptr->pair_cdr (color_list);
+                  b = CLAMP (sc->vptr->ivalue (sc->vptr->pair_car (color_list)),
+                             0, 255);
+
+                  gimp_rgba_set_uchar (&args[i].data.d_colorarray[j],
+                                       r, g, b, 255);
+                }
+#if DEBUG_MARSHALL
+              {
+                glong count = sc->vptr->vector_length (vector);
+                g_printerr ("      color vector has %ld elements\n", count);
+              }
+#endif
+            }
+          break;
+
+        case GIMP_PDB_PARASITE:
+          if (!sc->vptr->is_list (sc, sc->vptr->pair_car (a)) ||
+              sc->vptr->list_length (sc, sc->vptr->pair_car (a)) != 3)
+            success = FALSE;
+          if (success)
+            {
+              pointer temp_val;
+
+              /* parasite->name */
+              temp_val = sc->vptr->pair_car (a);
+
+              if (!sc->vptr->is_string (sc->vptr->pair_car (temp_val)))
+                {
+                  success = FALSE;
+                  break;
+                }
+
+              args[i].data.d_parasite.name =
+                sc->vptr->string_value (sc->vptr->pair_car (temp_val));
+#if DEBUG_MARSHALL
+              g_printerr ("      name '%s'\n", args[i].data.d_parasite.name);
+#endif
+
+              /* parasite->flags */
+              temp_val = sc->vptr->pair_cdr (temp_val);
+
+              if (!sc->vptr->is_number (sc->vptr->pair_car (temp_val)))
+                {
+                  success = FALSE;
+                  break;
+                }
+
+              args[i].data.d_parasite.flags =
+                sc->vptr->ivalue (sc->vptr->pair_car (temp_val));
+#if DEBUG_MARSHALL
+              g_printerr ("      flags %d", args[i].data.d_parasite.flags);
+#endif
+
+              /* parasite->data */
+              temp_val = sc->vptr->pair_cdr (temp_val);
+
+              if (!sc->vptr->is_string (sc->vptr->pair_car (temp_val)))
+                {
+                  success = FALSE;
+                  break;
+                }
+
+              args[i].data.d_parasite.data =
+                sc->vptr->string_value (sc->vptr->pair_car (temp_val));
+              args[i].data.d_parasite.size = strlen (args[i].data.d_parasite.data);
+
+#if DEBUG_MARSHALL
+              g_printerr (", size %d\n", args[i].data.d_parasite.size);
+              g_printerr ("      data '%s'\n", (char *)args[i].data.d_parasite.data);
+#endif
+            }
+          break;
+
+        case GIMP_PDB_STATUS:
+          return foreign_error (sc,
+                                "Status is for return types, not arguments",
+                                sc->vptr->pair_car (a));
+          break;
+
+        default:
+          g_snprintf (error_str, sizeof (error_str),
+                      "Argument %d for %s is an unknown type",
+                      i+1, proc_name);
+          return foreign_error (sc, error_str, 0);
+        }
+
+      /* Break out of loop before i gets updated when error was detected */
+      if (! success)
+        break;
+    }
+
+  if (success)
+    {
+      /* refuse to refresh scripts from a script, better than crashing
+       * see bug #575830
+       */
+      if (strcmp (proc_name, "script-fu-refresh-scripts"))
+        {
+#if DEBUG_MARSHALL
+          g_printerr ("    calling %s...", proc_name);
+#endif
+          values = gimp_run_procedure2 (proc_name, &nvalues, nparams, args);
+#if DEBUG_MARSHALL
+          g_printerr ("  done.\n");
+#endif
+        }
+    }
+  else
+    {
+#if DEBUG_MARSHALL
+      g_printerr ("  Invalid type for argument %d\n", i+1);
+#endif
+      g_snprintf (error_str, sizeof (error_str),
+                  "Invalid type for argument %d to %s",
+                  i+1, proc_name);
+      return foreign_error (sc, error_str, 0);
+    }
+
+  /*  Check the return status  */
+  if (! values)
+    {
+#if DEBUG_MARSHALL
+      g_printerr ("  Did not return status\n");
+#endif
+      g_snprintf (error_str, sizeof(error_str),
+                  "Procedure execution of %s did not return a status",
+                  proc_name);
+
+      return foreign_error (sc, error_str, 0);
+    }
+
+#if DEBUG_MARSHALL
+  {
+    const gchar *status_name;
+
+    gimp_enum_get_value (GIMP_TYPE_PDB_STATUS_TYPE,
+                         values[0].data.d_status,
+                         &status_name, NULL, NULL, NULL);
+    g_printerr ("    return value is %s\n", status_name);
+  }
+#endif
+
+  switch (values[0].data.d_status)
+    {
+    case GIMP_PDB_EXECUTION_ERROR:
+      if (nvalues > 1 && values[1].type == GIMP_PDB_STRING)
+        {
+          g_snprintf (error_str, sizeof (error_str),
+                      "Procedure execution of %s failed: %s",
+                      proc_name, values[1].data.d_string);
+        }
+      else
+        {
+          g_snprintf (error_str, sizeof (error_str),
+                      "Procedure execution of %s failed",
+                      proc_name);
+        }
+      return foreign_error (sc, error_str, 0);
+      break;
+
+    case GIMP_PDB_CALLING_ERROR:
+      if (nvalues > 1 && values[1].type == GIMP_PDB_STRING)
+        {
+          g_snprintf (error_str, sizeof (error_str),
+                      "Procedure execution of %s failed on invalid input arguments: %s",
+                      proc_name, values[1].data.d_string);
+        }
+      else
+        {
+          g_snprintf (error_str, sizeof (error_str),
+                      "Procedure execution of %s failed on invalid input arguments",
+                      proc_name);
+        }
+      return foreign_error (sc, error_str, 0);
+      break;
+
+    case GIMP_PDB_SUCCESS:
+#if DEBUG_MARSHALL
+      g_printerr ("    values returned: %d\n", nvalues-1);
+#endif
+      for (i = nvalues - 2; i >= 0; --i)
+        {
+          const gchar *string;
+          gint         j;
+
+#if DEBUG_MARSHALL
+          {
+            const gchar *type_name;
+
+            gimp_enum_get_value (GIMP_TYPE_PDB_ARG_TYPE,
+                                 return_vals[i].type,
+                                 &type_name, NULL, NULL, NULL);
+
+            g_printerr ("      value %d is type %s (%d)\n",
+                        i, type_name, return_vals[i].type);
+          }
+#endif
+          switch (return_vals[i].type)
+            {
+            case GIMP_PDB_INT32:
+            case GIMP_PDB_DISPLAY:
+            case GIMP_PDB_IMAGE:
+            case GIMP_PDB_ITEM:
+            case GIMP_PDB_LAYER:
+            case GIMP_PDB_CHANNEL:
+            case GIMP_PDB_DRAWABLE:
+            case GIMP_PDB_SELECTION:
+            case GIMP_PDB_VECTORS:
+              return_val = sc->vptr->cons (sc,
+                             sc->vptr->mk_integer (sc,
+                                                   values[i + 1].data.d_int32),
+                             return_val);
+              break;
+
+            case GIMP_PDB_INT16:
+              return_val = sc->vptr->cons (sc,
+                             sc->vptr->mk_integer (sc,
+                                                   values[i + 1].data.d_int16),
+                             return_val);
+              break;
+
+            case GIMP_PDB_INT8:
+              return_val = sc->vptr->cons (sc,
+                             sc->vptr->mk_integer (sc,
+                                                   values[i + 1].data.d_int8),
+                             return_val);
+              break;
+
+            case GIMP_PDB_FLOAT:
+              return_val = sc->vptr->cons (sc,
+                             sc->vptr->mk_real (sc,
+                                                values[i + 1].data.d_float),
+                             return_val);
+              break;
+
+            case GIMP_PDB_STRING:
+              string = values[i + 1].data.d_string;
+              if (! string)
+                string = "";
+              return_val = sc->vptr->cons (sc,
+                             sc->vptr->mk_string (sc, string),
+                             return_val);
+              break;
+
+            case GIMP_PDB_INT32ARRAY:
+              {
+                gint32  num_int32s = values[i].data.d_int32;
+                gint32 *array      = (gint32 *) values[i + 1].data.d_int32array;
+                pointer vector     = sc->vptr->mk_vector (sc, num_int32s);
+
+                for (j = 0; j < num_int32s; j++)
+                  {
+                    sc->vptr->set_vector_elem (vector, j,
+                                               sc->vptr->mk_integer (sc,
+                                                                     array[j]));
+                  }
+
+                return_val = sc->vptr->cons (sc, vector, return_val);
+              }
+              break;
+
+            case GIMP_PDB_INT16ARRAY:
+              {
+                gint32  num_int16s = values[i].data.d_int32;
+                gint16 *array      = (gint16 *) values[i + 1].data.d_int16array;
+                pointer vector     = sc->vptr->mk_vector (sc, num_int16s);
+
+                for (j = 0; j < num_int16s; j++)
+                  {
+                    sc->vptr->set_vector_elem (vector, j,
+                                               sc->vptr->mk_integer (sc,
+                                                                     array[j]));
+                  }
+
+                return_val = sc->vptr->cons (sc, vector, return_val);
+              }
+              break;
+
+            case GIMP_PDB_INT8ARRAY:
+              {
+                gint32  num_int8s = values[i].data.d_int32;
+                guint8 *array     = (guint8 *) values[i + 1].data.d_int8array;
+                pointer vector    = sc->vptr->mk_vector (sc, num_int8s);
+
+                for (j = 0; j < num_int8s; j++)
+                  {
+                    sc->vptr->set_vector_elem (vector, j,
+                                               sc->vptr->mk_integer (sc,
+                                                                     array[j]));
+                  }
+
+                return_val = sc->vptr->cons (sc, vector, return_val);
+              }
+              break;
+
+            case GIMP_PDB_FLOATARRAY:
+              {
+                gint32   num_floats = values[i].data.d_int32;
+                gdouble *array      = (gdouble *) values[i + 1].data.d_floatarray;
+                pointer  vector     = sc->vptr->mk_vector (sc, num_floats);
+
+                for (j = 0; j < num_floats; j++)
+                  {
+                    sc->vptr->set_vector_elem (vector, j,
+                                               sc->vptr->mk_real (sc,
+                                                                  array[j]));
+                  }
+
+                return_val = sc->vptr->cons (sc, vector, return_val);
+              }
+              break;
+
+            case GIMP_PDB_STRINGARRAY:
+              {
+                gint    num_strings = values[i].data.d_int32;
+                gchar **array       = (gchar **) values[i + 1].data.d_stringarray;
+                pointer list        = sc->NIL;
+
+                for (j = num_strings - 1; j >= 0; j--)
+                  {
+                    list = sc->vptr->cons (sc,
+                                           sc->vptr->mk_string (sc,
+                                                                array[j] ?
+                                                                array[j] : ""),
+                                           list);
+                  }
+
+                return_val = sc->vptr->cons (sc, list, return_val);
+              }
+              break;
+
+            case GIMP_PDB_COLOR:
+              {
+                guchar   r, g, b;
+                gpointer temp_val;
+
+                gimp_rgb_get_uchar (&values[i + 1].data.d_color, &r, &g, &b);
+
+                temp_val = sc->vptr->cons (sc,
+                             sc->vptr->mk_integer (sc, r),
+                             sc->vptr->cons (sc,
+                               sc->vptr->mk_integer (sc, g),
+                               sc->vptr->cons (sc,
+                                 sc->vptr->mk_integer (sc, b),
+                                 sc->NIL)));
+                return_val = sc->vptr->cons (sc,
+                                             temp_val,
+                                             return_val);
+                break;
+              }
+
+            case GIMP_PDB_COLORARRAY:
+              {
+                gint32   num_colors = values[i].data.d_int32;
+                GimpRGB *array      = (GimpRGB *) values[i + 1].data.d_colorarray;
+                pointer  vector     = sc->vptr->mk_vector (sc, num_colors);
+
+                for (j = 0; j < num_colors; j++)
+                  {
+                    guchar  r, g, b;
+                    pointer temp_val;
+
+                    gimp_rgb_get_uchar (&array[j], &r, &g, &b);
+
+                    temp_val = sc->vptr->cons (sc,
+                                 sc->vptr->mk_integer (sc, r),
+                                 sc->vptr->cons (sc,
+                                   sc->vptr->mk_integer (sc, g),
+                                   sc->vptr->cons (sc,
+                                     sc->vptr->mk_integer (sc, b),
+                                     sc->NIL)));
+                    sc->vptr->set_vector_elem (vector, j, temp_val);
+                  }
+
+                return_val = sc->vptr->cons (sc, vector, return_val);
+              }
+              break;
+
+            case GIMP_PDB_PARASITE:
+              {
+                if (values[i + 1].data.d_parasite.name == NULL)
+                  {
+                    return_val = foreign_error (sc, "Error: null parasite", 0);
+                  }
+                else
+                  {
+                    GimpParasite *p = &values[i + 1].data.d_parasite;
+                    gchar        *data = g_strndup (p->data, p->size);
+                    gint          char_cnt = g_utf8_strlen (data, p->size);
+                    pointer       temp_val;
+
+                    /* don't move the mk_foo() calls outside this function call,
+                     * otherwise they might be garbage collected away!
+                     */
+                    temp_val = sc->vptr->cons (sc,
+                                 sc->vptr->mk_string (sc, p->name),
+                                 sc->vptr->cons (sc,
+                                   sc->vptr->mk_integer (sc, p->flags),
+                                   sc->vptr->cons (sc,
+                                     sc->vptr->mk_counted_string (sc,
+                                                                  data,
+                                                                  char_cnt),
+                                     sc->NIL)));
+                    return_val = sc->vptr->cons (sc,
+                                                 temp_val,
+                                                 return_val);
+                    g_free (data);
+
+#if DEBUG_MARSHALL
+                    g_printerr ("      name '%s'\n", p->name);
+                    g_printerr ("      flags %d", p->flags);
+                    g_printerr (", size %d\n", p->size);
+                    g_printerr ("      data '%.*s'\n",
+                                p->size, (gchar *) p->data);
+#endif
+                  }
+              }
+              break;
+
+            case GIMP_PDB_STATUS:
+              return foreign_error (sc, "Procedure execution returned multiple status values", 0);
+              break;
+
+            default:
+              return foreign_error (sc, "Unknown return type", 0);
+            }
+        }
+
+    case GIMP_PDB_PASS_THROUGH:
+    case GIMP_PDB_CANCEL:   /*  should we do something here?  */
+      break;
+    }
+
+  /* If we have no return value(s) from PDB call, return
+   * either TRUE or FALSE to indicate if call succeeded.
+   */
+  if (return_val == sc->NIL)
+    {
+      if (values[0].data.d_status == GIMP_PDB_SUCCESS)
+        return_val = sc->vptr->cons (sc, sc->T, sc->NIL);
+      else
+        return_val = sc->vptr->cons (sc, sc->F, sc->NIL);
+    }
+
+  /*  free the proc name  */
+  g_free (proc_name);
+
+  /*  free up the executed procedure return values  */
+  gimp_destroy_params (values, nvalues);
+
+  /*  free up arguments and values  */
+  script_fu_marshal_destroy_args (args, nparams);
+
+  /*  free the query information  */
+  g_free (proc_blurb);
+  g_free (proc_help);
+  g_free (proc_author);
+  g_free (proc_copyright);
+  g_free (proc_date);
+  g_free (params);
+  g_free (return_vals);
+
+  /*  if we're in server mode, listen for additional commands for 10 ms  */
+  if (script_fu_server_get_mode ())
+    script_fu_server_listen (10);
+
+#ifdef GDK_WINDOWING_WIN32
+  /* This seems to help a lot on Windoze. */
+  while (gtk_events_pending ())
+    gtk_main_iteration ();
+#endif
+
+  return return_val;
+}
+
+static pointer
+script_fu_marshal_procedure_call_strict (scheme  *sc,
+                                         pointer  a)
+{
+  return script_fu_marshal_procedure_call (sc, a, FALSE);
+}
+
+static pointer
+script_fu_marshal_procedure_call_permissive (scheme  *sc,
+                                             pointer  a)
+{
+  return script_fu_marshal_procedure_call (sc, a, TRUE);
+}
+
+static void
+script_fu_marshal_destroy_args (GimpParam *params,
+                                gint       n_params)
+{
+  gint i;
+
+  for (i = 0; i < n_params; i++)
+    {
+      switch (params[i].type)
+        {
+        case GIMP_PDB_INT32:
+        case GIMP_PDB_INT16:
+        case GIMP_PDB_INT8:
+        case GIMP_PDB_FLOAT:
+        case GIMP_PDB_STRING:
+          break;
+
+        case GIMP_PDB_INT32ARRAY:
+          g_free (params[i].data.d_int32array);
+          break;
+
+        case GIMP_PDB_INT16ARRAY:
+          g_free (params[i].data.d_int16array);
+          break;
+
+        case GIMP_PDB_INT8ARRAY:
+          g_free (params[i].data.d_int8array);
+          break;
+
+        case GIMP_PDB_FLOATARRAY:
+          g_free (params[i].data.d_floatarray);
+          break;
+
+        case GIMP_PDB_STRINGARRAY:
+          g_free (params[i].data.d_stringarray);
+          break;
+
+        case GIMP_PDB_COLORARRAY:
+          g_free (params[i].data.d_colorarray);
+          break;
+
+        case GIMP_PDB_COLOR:
+        case GIMP_PDB_DISPLAY:
+        case GIMP_PDB_IMAGE:
+        case GIMP_PDB_ITEM:
+        case GIMP_PDB_LAYER:
+        case GIMP_PDB_CHANNEL:
+        case GIMP_PDB_DRAWABLE:
+        case GIMP_PDB_SELECTION:
+        case GIMP_PDB_VECTORS:
+        case GIMP_PDB_PARASITE:
+        case GIMP_PDB_STATUS:
+        case GIMP_PDB_END:
+          break;
+        }
+    }
+
+  g_free (params);
+}
+
+static pointer
+script_fu_register_call (scheme  *sc,
+                         pointer  a)
+{
+  return script_fu_add_script (sc, a);
+}
+
+static pointer
+script_fu_menu_register_call (scheme  *sc,
+                              pointer  a)
+{
+  return script_fu_add_menu (sc, a);
+}
+
+static pointer
+script_fu_quit_call (scheme  *sc,
+                     pointer  a)
+{
+  script_fu_server_quit ();
+
+  scheme_deinit (sc);
+
+  return sc->NIL;
+}
+
+static pointer
+script_fu_nil_call (scheme  *sc,
+                    pointer  a)
+{
+  return sc->NIL;
+}
diff --git a/plug-ins/script-fu/scheme-wrapper.h b/plug-ins/script-fu/scheme-wrapper.h
new file mode 100644
index 0000000..9ab44ef
--- /dev/null
+++ b/plug-ins/script-fu/scheme-wrapper.h
@@ -0,0 +1,47 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef __SCHEME_WRAPPER_H__
+#define __SCHEME_WRAPPER_H__
+
+#include "tinyscheme/scheme.h"
+
+void          tinyscheme_init         (GList        *path,
+                                       gboolean      register_scripts);
+
+void          ts_set_run_mode         (GimpRunMode   run_mode);
+
+void          ts_set_print_flag       (gint          print_flag);
+void          ts_print_welcome        (void);
+
+const gchar * ts_get_success_msg      (void);
+
+void          ts_interpret_stdin      (void);
+
+/* if the return value is 0, success. error otherwise. */
+gint          ts_interpret_string     (const gchar  *expr);
+
+void          ts_stdout_output_func   (TsOutputType  type,
+                                       const char   *string,
+                                       int           len,
+                                       gpointer      user_data);
+void          ts_gstring_output_func  (TsOutputType  type,
+                                       const char   *string,
+                                       int           len,
+                                       gpointer      user_data);
+
+#endif /* __SCHEME_WRAPPER_H__ */
diff --git a/plug-ins/script-fu/script-fu-console.c b/plug-ins/script-fu/script-fu-console.c
new file mode 100644
index 0000000..835b3db
--- /dev/null
+++ b/plug-ins/script-fu/script-fu-console.c
@@ -0,0 +1,703 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <errno.h>
+#include <string.h>
+
+#include <glib/gstdio.h>
+
+#include "libgimp/gimp.h"
+#include "libgimp/gimpui.h"
+
+#include <gdk/gdkkeysyms.h>
+
+#include "scheme-wrapper.h"
+#include "script-fu-console.h"
+
+#include "script-fu-intl.h"
+
+
+#define TEXT_WIDTH  480
+#define TEXT_HEIGHT 400
+
+#define PROC_NAME   "plug-in-script-fu-console"
+
+typedef struct
+{
+  GtkWidget     *dialog;
+  GtkTextBuffer *console;
+  GtkWidget     *cc;
+  GtkWidget     *text_view;
+  GtkWidget     *proc_browser;
+  GtkWidget     *save_dialog;
+
+  GList         *history;
+  gint           history_len;
+  gint           history_cur;
+  gint           history_max;
+} ConsoleInterface;
+
+enum
+{
+  RESPONSE_CLEAR,
+  RESPONSE_SAVE
+};
+
+/*
+ *  Local Functions
+ */
+static void      script_fu_console_interface     (void);
+static void      script_fu_console_response      (GtkWidget        *widget,
+                                                  gint              response_id,
+                                                  ConsoleInterface *console);
+static void      script_fu_console_save_dialog   (ConsoleInterface *console);
+static void      script_fu_console_save_response (GtkWidget        *dialog,
+                                                  gint              response_id,
+                                                  ConsoleInterface *console);
+
+static void      script_fu_browse_callback       (GtkWidget        *widget,
+                                                  ConsoleInterface *console);
+static void      script_fu_browse_response       (GtkWidget        *widget,
+                                                  gint              response_id,
+                                                  ConsoleInterface *console);
+static void      script_fu_browse_row_activated  (GtkDialog        *dialog);
+
+static gboolean  script_fu_cc_is_empty           (ConsoleInterface *console);
+static gboolean  script_fu_cc_key_function       (GtkWidget        *widget,
+                                                  GdkEventKey      *event,
+                                                  ConsoleInterface *console);
+
+static void      script_fu_output_to_console     (TsOutputType      type,
+                                                  const gchar      *text,
+                                                  gint              len,
+                                                  gpointer          user_data);
+
+/*
+ *  Function definitions
+ */
+
+void
+script_fu_console_run (const gchar      *name,
+                       gint              nparams,
+                       const GimpParam  *params,
+                       gint             *nreturn_vals,
+                       GimpParam       **return_vals)
+{
+  static GimpParam  values[1];
+
+  ts_set_print_flag (1);
+  script_fu_console_interface ();
+
+  *nreturn_vals = 1;
+  *return_vals  = values;
+
+  values[0].type          = GIMP_PDB_STATUS;
+  values[0].data.d_status = GIMP_PDB_SUCCESS;
+}
+
+static void
+script_fu_console_interface (void)
+{
+  ConsoleInterface  console = { 0, };
+  GtkWidget        *vbox;
+  GtkWidget        *button;
+  GtkWidget        *scrolled_window;
+  GtkWidget        *hbox;
+
+  gimp_ui_init ("script-fu", FALSE);
+
+  console.history_max = 50;
+
+  console.dialog = gimp_dialog_new (_("Script-Fu Console"),
+                                    "gimp-script-fu-console",
+                                    NULL, 0,
+                                    gimp_standard_help_func, PROC_NAME,
+
+                                    _("_Save"),  RESPONSE_SAVE,
+                                    _("C_lear"), RESPONSE_CLEAR,
+                                    _("_Close"), GTK_RESPONSE_CLOSE,
+
+                                    NULL);
+
+  gtk_dialog_set_alternative_button_order (GTK_DIALOG (console.dialog),
+                                           GTK_RESPONSE_CLOSE,
+                                           RESPONSE_CLEAR,
+                                           RESPONSE_SAVE,
+                                           -1);
+
+  g_object_add_weak_pointer (G_OBJECT (console.dialog),
+                             (gpointer) &console.dialog);
+
+  g_signal_connect (console.dialog, "response",
+                    G_CALLBACK (script_fu_console_response),
+                    &console);
+
+  /*  The main vbox  */
+  vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 12);
+  gtk_container_set_border_width (GTK_CONTAINER (vbox), 12);
+  gtk_box_pack_start (GTK_BOX (gtk_dialog_get_content_area (GTK_DIALOG (console.dialog))),
+                      vbox, TRUE, TRUE, 0);
+  gtk_widget_show (vbox);
+
+  /*  The output text widget  */
+  scrolled_window = gtk_scrolled_window_new (NULL, NULL);
+  gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (scrolled_window),
+                                  GTK_POLICY_AUTOMATIC,
+                                  GTK_POLICY_ALWAYS);
+  gtk_box_pack_start (GTK_BOX (vbox), scrolled_window, TRUE, TRUE, 0);
+  gtk_widget_show (scrolled_window);
+
+  console.console = gtk_text_buffer_new (NULL);
+  console.text_view = gtk_text_view_new_with_buffer (console.console);
+  g_object_unref (console.console);
+
+  gtk_text_view_set_editable (GTK_TEXT_VIEW (console.text_view), FALSE);
+  gtk_text_view_set_wrap_mode (GTK_TEXT_VIEW (console.text_view),
+                               GTK_WRAP_WORD);
+  gtk_text_view_set_left_margin (GTK_TEXT_VIEW (console.text_view), 6);
+  gtk_text_view_set_right_margin (GTK_TEXT_VIEW (console.text_view), 6);
+  gtk_widget_set_size_request (console.text_view, TEXT_WIDTH, TEXT_HEIGHT);
+  gtk_container_add (GTK_CONTAINER (scrolled_window), console.text_view);
+  gtk_widget_show (console.text_view);
+
+  gtk_text_buffer_create_tag (console.console, "strong",
+                              "weight", PANGO_WEIGHT_BOLD,
+                              "scale",  PANGO_SCALE_LARGE,
+                              NULL);
+  gtk_text_buffer_create_tag (console.console, "emphasis",
+                              "style",  PANGO_STYLE_OBLIQUE,
+                              NULL);
+
+  {
+    const gchar * const greetings[] =
+    {
+      "strong",   N_("Welcome to TinyScheme"),
+      NULL,       "\n",
+      NULL,       "Copyright (c) Dimitrios Souflis",
+      NULL,       "\n",
+      "strong",   N_("Script-Fu Console"),
+      NULL,       " - ",
+      "emphasis", N_("Interactive Scheme Development"),
+      NULL,       "\n"
+    };
+
+    GtkTextIter cursor;
+    gint        i;
+
+    gtk_text_buffer_get_end_iter (console.console, &cursor);
+
+    for (i = 0; i < G_N_ELEMENTS (greetings); i += 2)
+      {
+        if (greetings[i])
+          gtk_text_buffer_insert_with_tags_by_name (console.console, &cursor,
+                                                    gettext (greetings[i + 1]),
+                                                    -1, greetings[i],
+                                                    NULL);
+        else
+          gtk_text_buffer_insert (console.console, &cursor,
+                                  gettext (greetings[i + 1]), -1);
+      }
+  }
+
+  /*  The current command  */
+  hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
+  gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, FALSE, 0);
+  gtk_widget_show (hbox);
+
+  console.cc = gtk_entry_new ();
+  gtk_box_pack_start (GTK_BOX (hbox), console.cc, TRUE, TRUE, 0);
+  gtk_widget_grab_focus (console.cc);
+  gtk_widget_show (console.cc);
+
+  g_signal_connect (console.cc, "key-press-event",
+                    G_CALLBACK (script_fu_cc_key_function),
+                    &console);
+
+  button = gtk_button_new_with_mnemonic (_("_Browse..."));
+  gtk_misc_set_padding (GTK_MISC (gtk_bin_get_child (GTK_BIN (button))), 2, 0);
+  gtk_box_pack_start (GTK_BOX (hbox), button, FALSE, TRUE, 0);
+  gtk_widget_show (button);
+
+  g_signal_connect (button, "clicked",
+                    G_CALLBACK (script_fu_browse_callback),
+                    &console);
+
+  /*  Initialize the history  */
+  console.history     = g_list_append (console.history, NULL);
+  console.history_len = 1;
+
+  gtk_widget_show (console.dialog);
+
+  gtk_main ();
+
+  if (console.save_dialog)
+    gtk_widget_destroy (console.save_dialog);
+
+  if (console.dialog)
+    gtk_widget_destroy (console.dialog);
+}
+
+static void
+script_fu_console_response (GtkWidget        *widget,
+                            gint              response_id,
+                            ConsoleInterface *console)
+{
+  GtkTextIter start, end;
+
+  switch (response_id)
+    {
+    case RESPONSE_CLEAR:
+      gtk_text_buffer_get_start_iter (console->console, &start);
+      gtk_text_buffer_get_end_iter (console->console, &end);
+      gtk_text_buffer_delete (console->console, &start, &end);
+      break;
+
+    case RESPONSE_SAVE:
+      script_fu_console_save_dialog (console);
+      break;
+
+    default:
+      gtk_main_quit ();
+      break;
+    }
+}
+
+
+static void
+script_fu_console_save_dialog (ConsoleInterface *console)
+{
+  if (! console->save_dialog)
+    {
+      console->save_dialog =
+        gtk_file_chooser_dialog_new (_("Save Script-Fu Console Output"),
+                                     GTK_WINDOW (console->dialog),
+                                     GTK_FILE_CHOOSER_ACTION_SAVE,
+
+                                     _("_Cancel"), GTK_RESPONSE_CANCEL,
+                                     _("_Save"),   GTK_RESPONSE_OK,
+
+                                     NULL);
+
+      gtk_dialog_set_default_response (GTK_DIALOG (console->save_dialog),
+                                       GTK_RESPONSE_OK);
+      gtk_dialog_set_alternative_button_order (GTK_DIALOG (console->save_dialog),
+                                               GTK_RESPONSE_OK,
+                                               GTK_RESPONSE_CANCEL,
+                                               -1);
+
+      gtk_file_chooser_set_do_overwrite_confirmation (GTK_FILE_CHOOSER (console->save_dialog),
+                                                      TRUE);
+
+      g_object_add_weak_pointer (G_OBJECT (console->save_dialog),
+                                 (gpointer) &console->save_dialog);
+
+      g_signal_connect (console->save_dialog, "response",
+                        G_CALLBACK (script_fu_console_save_response),
+                        console);
+    }
+
+  gtk_window_present (GTK_WINDOW (console->save_dialog));
+}
+
+static void
+script_fu_console_save_response (GtkWidget        *dialog,
+                                 gint              response_id,
+                                 ConsoleInterface *console)
+{
+  GtkTextIter start, end;
+
+  if (response_id == GTK_RESPONSE_OK)
+    {
+      gchar *filename;
+      gchar *str;
+      FILE  *fh;
+
+      filename = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (dialog));
+
+      fh = g_fopen (filename, "w");
+
+      if (! fh)
+        {
+          g_message (_("Could not open '%s' for writing: %s"),
+                     gimp_filename_to_utf8 (filename),
+                     g_strerror (errno));
+
+          g_free (filename);
+          return;
+        }
+
+      gtk_text_buffer_get_start_iter (console->console, &start);
+      gtk_text_buffer_get_end_iter (console->console, &end);
+
+      str = gtk_text_buffer_get_text (console->console, &start, &end, FALSE);
+
+      fputs (str, fh);
+      fclose (fh);
+
+      g_free (str);
+    }
+
+  gtk_widget_hide (dialog);
+}
+
+static void
+script_fu_browse_callback (GtkWidget        *widget,
+                           ConsoleInterface *console)
+{
+  if (! console->proc_browser)
+    {
+      console->proc_browser =
+        gimp_proc_browser_dialog_new (_("Script-Fu Procedure Browser"),
+                                      "script-fu-procedure-browser",
+                                      gimp_standard_help_func, PROC_NAME,
+
+                                      _("_Apply"), GTK_RESPONSE_APPLY,
+                                      _("_Close"), GTK_RESPONSE_CLOSE,
+
+                                      NULL);
+
+      gtk_dialog_set_default_response (GTK_DIALOG (console->proc_browser),
+                                       GTK_RESPONSE_APPLY);
+      gtk_dialog_set_alternative_button_order (GTK_DIALOG (console->proc_browser),
+                                               GTK_RESPONSE_CLOSE,
+                                               GTK_RESPONSE_APPLY,
+                                               -1);
+
+      g_object_add_weak_pointer (G_OBJECT (console->proc_browser),
+                                 (gpointer) &console->proc_browser);
+
+      g_signal_connect (console->proc_browser, "response",
+                        G_CALLBACK (script_fu_browse_response),
+                        console);
+      g_signal_connect (console->proc_browser, "row-activated",
+                        G_CALLBACK (script_fu_browse_row_activated),
+                        console);
+    }
+
+  gtk_window_present (GTK_WINDOW (console->proc_browser));
+}
+
+static void
+script_fu_browse_response (GtkWidget        *widget,
+                           gint              response_id,
+                           ConsoleInterface *console)
+{
+  GimpProcBrowserDialog *dialog = GIMP_PROC_BROWSER_DIALOG (widget);
+  gchar                 *proc_name;
+  gchar                 *proc_blurb;
+  gchar                 *proc_help;
+  gchar                 *proc_author;
+  gchar                 *proc_copyright;
+  gchar                 *proc_date;
+  GimpPDBProcType        proc_type;
+  gint                   n_params;
+  gint                   n_return_vals;
+  GimpParamDef          *params;
+  GimpParamDef          *return_vals;
+  gint                   i;
+  GString               *text;
+
+  if (response_id != GTK_RESPONSE_APPLY)
+    {
+      gtk_widget_destroy (widget);
+      return;
+    }
+
+  proc_name = gimp_proc_browser_dialog_get_selected (dialog);
+
+  if (proc_name == NULL)
+    return;
+
+  gimp_procedural_db_proc_info (proc_name,
+                                &proc_blurb,
+                                &proc_help,
+                                &proc_author,
+                                &proc_copyright,
+                                &proc_date,
+                                &proc_type,
+                                &n_params,
+                                &n_return_vals,
+                                &params,
+                                &return_vals);
+
+  text = g_string_new ("(");
+  text = g_string_append (text, proc_name);
+
+  for (i = 0; i < n_params; i++)
+    {
+      text = g_string_append_c (text, ' ');
+      text = g_string_append (text, params[i].name);
+    }
+
+  text = g_string_append_c (text, ')');
+
+  gtk_window_set_focus (GTK_WINDOW (console->dialog), console->cc);
+
+  gtk_entry_set_text (GTK_ENTRY (console->cc), text->str);
+  gtk_editable_set_position (GTK_EDITABLE (console->cc),
+                             g_utf8_pointer_to_offset (text->str,
+                                                       text->str +
+                                                       strlen (proc_name) + 2));
+
+  g_string_free (text, TRUE);
+
+  gtk_window_present (GTK_WINDOW (console->dialog));
+
+  g_free (proc_name);
+  g_free (proc_blurb);
+  g_free (proc_help);
+  g_free (proc_author);
+  g_free (proc_copyright);
+  g_free (proc_date);
+
+  gimp_destroy_paramdefs (params,      n_params);
+  gimp_destroy_paramdefs (return_vals, n_return_vals);
+}
+
+static void
+script_fu_browse_row_activated (GtkDialog *dialog)
+{
+  gtk_dialog_response (dialog, GTK_RESPONSE_APPLY);
+}
+
+static gboolean
+script_fu_console_idle_scroll_end (GtkWidget *view)
+{
+  GtkWidget *parent = gtk_widget_get_parent (view);
+
+  if (parent)
+    {
+      GtkAdjustment *adj;
+
+      adj = gtk_scrolled_window_get_vadjustment (GTK_SCROLLED_WINDOW (parent));
+
+      gtk_adjustment_set_value (adj,
+                                gtk_adjustment_get_upper (adj) -
+                                gtk_adjustment_get_page_size (adj));
+    }
+
+  g_object_unref (view);
+
+  return FALSE;
+}
+
+static void
+script_fu_console_scroll_end (GtkWidget *view)
+{
+  /*  the text view idle updates, so we need to idle scroll too
+   */
+  g_object_ref (view);
+
+  g_idle_add ((GSourceFunc) script_fu_console_idle_scroll_end, view);
+}
+
+static void
+script_fu_output_to_console (TsOutputType  type,
+                             const gchar  *text,
+                             gint          len,
+                             gpointer      user_data)
+{
+  ConsoleInterface *console = user_data;
+
+  if (console && console->text_view)
+    {
+      GtkTextBuffer *buffer;
+      GtkTextIter    cursor;
+
+      buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (console->text_view));
+
+      gtk_text_buffer_get_end_iter (buffer, &cursor);
+
+      if (type == TS_OUTPUT_NORMAL)
+        {
+          gtk_text_buffer_insert (buffer, &cursor, text, len);
+        }
+      else
+        {
+          gtk_text_buffer_insert_with_tags_by_name (console->console, &cursor,
+                                                    text, len, "emphasis",
+                                                    NULL);
+        }
+
+      script_fu_console_scroll_end (console->text_view);
+    }
+}
+
+static gboolean
+script_fu_cc_is_empty (ConsoleInterface *console)
+{
+  const gchar *str;
+
+  if ((str = gtk_entry_get_text (GTK_ENTRY (console->cc))) == NULL)
+    return TRUE;
+
+  while (*str)
+    {
+      if (*str != ' ' && *str != '\t' && *str != '\n')
+        return FALSE;
+
+      str ++;
+    }
+
+  return TRUE;
+}
+
+static gboolean
+script_fu_cc_key_function (GtkWidget        *widget,
+                           GdkEventKey      *event,
+                           ConsoleInterface *console)
+{
+  GList       *list;
+  gint         direction = 0;
+  GtkTextIter  cursor;
+  GString     *output;
+
+  switch (event->keyval)
+    {
+    case GDK_KEY_Return:
+    case GDK_KEY_KP_Enter:
+    case GDK_KEY_ISO_Enter:
+      if (script_fu_cc_is_empty (console))
+        return TRUE;
+
+      list = g_list_nth (console->history,
+                         (g_list_length (console->history) - 1));
+
+      if (list->data)
+        g_free (list->data);
+
+      list->data = g_strdup (gtk_entry_get_text (GTK_ENTRY (console->cc)));
+
+      gtk_text_buffer_get_end_iter (console->console, &cursor);
+
+      gtk_text_buffer_insert (console->console, &cursor, "\n", 1);
+      gtk_text_buffer_insert_with_tags_by_name (console->console, &cursor,
+                                                "> ", 2,
+                                                "strong",
+                                                NULL);
+
+      gtk_text_buffer_insert (console->console, &cursor,
+                              gtk_entry_get_text (GTK_ENTRY (console->cc)), -1);
+      gtk_text_buffer_insert (console->console, &cursor, "\n", 1);
+
+      script_fu_console_scroll_end (console->text_view);
+
+      gtk_entry_set_text (GTK_ENTRY (console->cc), "");
+
+      output = g_string_new (NULL);
+      ts_register_output_func (ts_gstring_output_func, output);
+
+      gimp_plugin_set_pdb_error_handler (GIMP_PDB_ERROR_HANDLER_PLUGIN);
+
+      if (ts_interpret_string (list->data) != 0)
+        {
+          script_fu_output_to_console (TS_OUTPUT_ERROR,
+                                       output->str,
+                                       output->len,
+                                       console);
+        }
+      else
+        {
+          script_fu_output_to_console (TS_OUTPUT_NORMAL,
+                                       output->str,
+                                       output->len,
+                                       console);
+        }
+
+      gimp_plugin_set_pdb_error_handler (GIMP_PDB_ERROR_HANDLER_INTERNAL);
+
+      g_string_free (output, TRUE);
+
+      gimp_displays_flush ();
+
+      console->history = g_list_append (console->history, NULL);
+
+      if (console->history_len == console->history_max)
+        {
+          console->history = g_list_remove (console->history,
+                                            console->history->data);
+          if (console->history->data)
+            g_free (console->history->data);
+        }
+      else
+        {
+          console->history_len++;
+        }
+
+      console->history_cur = g_list_length (console->history) - 1;
+
+      return TRUE;
+      break;
+
+    case GDK_KEY_KP_Up:
+    case GDK_KEY_Up:
+      direction = -1;
+      break;
+
+    case GDK_KEY_KP_Down:
+    case GDK_KEY_Down:
+      direction = 1;
+      break;
+
+    case GDK_KEY_P:
+    case GDK_KEY_p:
+      if (event->state & GDK_CONTROL_MASK)
+        direction = -1;
+      break;
+
+    case GDK_KEY_N:
+    case GDK_KEY_n:
+      if (event->state & GDK_CONTROL_MASK)
+        direction = 1;
+      break;
+
+    default:
+      break;
+    }
+
+  if (direction)
+    {
+      /*  Make sure we keep track of the current one  */
+      if (console->history_cur == g_list_length (console->history) - 1)
+        {
+          list = g_list_nth (console->history, console->history_cur);
+
+          g_free (list->data);
+          list->data = g_strdup (gtk_entry_get_text (GTK_ENTRY (console->cc)));
+        }
+
+      console->history_cur += direction;
+
+      if (console->history_cur < 0)
+        console->history_cur = 0;
+
+      if (console->history_cur >= console->history_len)
+        console->history_cur = console->history_len - 1;
+
+      gtk_entry_set_text (GTK_ENTRY (console->cc),
+                          (gchar *) (g_list_nth (console->history,
+                                                 console->history_cur))->data);
+
+      gtk_editable_set_position (GTK_EDITABLE (console->cc), -1);
+
+      return TRUE;
+    }
+
+  return FALSE;
+}
diff --git a/plug-ins/script-fu/script-fu-console.h b/plug-ins/script-fu/script-fu-console.h
new file mode 100644
index 0000000..8410a61
--- /dev/null
+++ b/plug-ins/script-fu/script-fu-console.h
@@ -0,0 +1,29 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef __SCRIPT_FU_CONSOLE_H__
+#define __SCRIPT_FU_CONSOLE_H__
+
+
+void  script_fu_console_run (const gchar      *name,
+                             gint              nparams,
+                             const GimpParam  *params,
+                             gint             *nreturn_vals,
+                             GimpParam       **return_vals);
+
+
+#endif /*  __SCRIPT_FU_CONSOLE_H__  */
diff --git a/plug-ins/script-fu/script-fu-enums.h b/plug-ins/script-fu/script-fu-enums.h
new file mode 100644
index 0000000..581441f
--- /dev/null
+++ b/plug-ins/script-fu/script-fu-enums.h
@@ -0,0 +1,54 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef __SCRIPT_FU_ENUMS_H__
+#define __SCRIPT_FU_ENUMS_H__
+
+/*  Typedefs for script-fu argument types  */
+
+typedef enum
+{
+  SF_IMAGE = 0,
+  SF_DRAWABLE,
+  SF_LAYER,
+  SF_CHANNEL,
+  SF_VECTORS,
+  SF_COLOR,
+  SF_TOGGLE,
+  SF_VALUE,
+  SF_STRING,
+  SF_ADJUSTMENT,
+  SF_FONT,
+  SF_PATTERN,
+  SF_BRUSH,
+  SF_GRADIENT,
+  SF_FILENAME,
+  SF_DIRNAME,
+  SF_OPTION,
+  SF_PALETTE,
+  SF_TEXT,
+  SF_ENUM,
+  SF_DISPLAY
+} SFArgType;
+
+typedef enum
+{
+  SF_SLIDER = 0,
+  SF_SPINNER
+} SFAdjustmentType;
+
+#endif /*  __SCRIPT_FU_ENUMS__  */
diff --git a/plug-ins/script-fu/script-fu-eval.c b/plug-ins/script-fu/script-fu-eval.c
new file mode 100644
index 0000000..6f2e354
--- /dev/null
+++ b/plug-ins/script-fu/script-fu-eval.c
@@ -0,0 +1,80 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include "libgimp/gimp.h"
+
+#include "scheme-wrapper.h"
+#include "script-fu-eval.h"
+
+#include "script-fu-intl.h"
+
+
+void
+script_fu_eval_run (const gchar      *name,
+                    gint              nparams,
+                    const GimpParam  *params,
+                    gint             *nreturn_vals,
+                    GimpParam       **return_vals)
+{
+  static GimpParam   values[2];
+  GString           *output = g_string_new (NULL);
+  GimpPDBStatusType  status = GIMP_PDB_SUCCESS;
+  GimpRunMode        run_mode;
+
+  *nreturn_vals = 1;
+  *return_vals  = values;
+
+  values[0].type = GIMP_PDB_STATUS;
+
+  run_mode = params[0].data.d_int32;
+
+  ts_set_run_mode (run_mode);
+  ts_register_output_func (ts_gstring_output_func, output);
+
+  switch (run_mode)
+    {
+    case GIMP_RUN_NONINTERACTIVE:
+      if (ts_interpret_string (params[1].data.d_string) != 0)
+        status = GIMP_PDB_EXECUTION_ERROR;
+      break;
+
+    case GIMP_RUN_INTERACTIVE:
+    case GIMP_RUN_WITH_LAST_VALS:
+      status        = GIMP_PDB_CALLING_ERROR;
+      g_string_assign (output, _("Script-Fu evaluation mode only allows "
+                                 "non-interactive invocation"));
+      break;
+
+    default:
+      break;
+    }
+
+  values[0].data.d_status = status;
+
+  if (status != GIMP_PDB_SUCCESS && output->len > 0)
+    {
+      *nreturn_vals = 2;
+      values[1].type          = GIMP_PDB_STRING;
+      values[1].data.d_string = g_string_free (output, FALSE);
+    }
+  else
+    {
+      g_string_free (output, TRUE);
+    }
+}
diff --git a/plug-ins/script-fu/script-fu-eval.h b/plug-ins/script-fu/script-fu-eval.h
new file mode 100644
index 0000000..83ec9c4
--- /dev/null
+++ b/plug-ins/script-fu/script-fu-eval.h
@@ -0,0 +1,29 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef __SCRIPT_FU_EVAL_H__
+#define __SCRIPT_FU_EVAL_H__
+
+
+void  script_fu_eval_run (const gchar      *name,
+                          gint              nparams,
+                          const GimpParam  *params,
+                          gint             *nreturn_vals,
+                          GimpParam       **return_vals);
+
+
+#endif /*  __SCRIPT_FU_EVAL_H__  */
diff --git a/plug-ins/script-fu/script-fu-interface.c b/plug-ins/script-fu/script-fu-interface.c
new file mode 100644
index 0000000..0fa1811
--- /dev/null
+++ b/plug-ins/script-fu/script-fu-interface.c
@@ -0,0 +1,1070 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <string.h>
+
+#include <libgimp/gimp.h>
+#include <libgimp/gimpui.h>
+
+#ifdef GDK_WINDOWING_QUARTZ
+#import <Cocoa/Cocoa.h>
+#elif defined (G_OS_WIN32)
+#include <windows.h>
+#endif
+
+#include "tinyscheme/scheme-private.h"
+#include "scheme-wrapper.h"
+
+#include "script-fu-types.h"
+
+#include "script-fu-interface.h"
+#include "script-fu-scripts.h"
+#include "script-fu-script.h"
+
+#include "script-fu-intl.h"
+
+
+#define RESPONSE_RESET         1
+
+#define TEXT_WIDTH           100
+#define COLOR_SAMPLE_WIDTH    60
+#define COLOR_SAMPLE_HEIGHT   15
+#define SLIDER_WIDTH          80
+
+
+typedef struct
+{
+  GtkWidget  *dialog;
+
+  GtkWidget  *table;
+  GtkWidget **widgets;
+
+  GtkWidget  *progress_label;
+  GtkWidget  *progress_bar;
+
+  gchar      *title;
+  gchar      *last_command;
+  gint        command_count;
+  gint        consec_command_count;
+} SFInterface;
+
+
+/*
+ *  Local Functions
+ */
+
+static void   script_fu_interface_quit      (SFScript      *script);
+
+static void   script_fu_response            (GtkWidget     *widget,
+                                             gint           response_id,
+                                             SFScript      *script);
+static void   script_fu_ok                  (SFScript      *script);
+static void   script_fu_reset               (SFScript      *script);
+
+static void   script_fu_file_callback       (GtkWidget     *widget,
+                                             SFFilename    *file);
+static void   script_fu_combo_callback      (GtkWidget     *widget,
+                                             SFOption      *option);
+static void   script_fu_pattern_callback    (gpointer       data,
+                                             const gchar   *name,
+                                             gint           width,
+                                             gint           height,
+                                             gint           bytes,
+                                             const guchar  *mask_data,
+                                             gboolean       closing);
+static void   script_fu_gradient_callback   (gpointer       data,
+                                             const gchar   *name,
+                                             gint           width,
+                                             const gdouble *mask_data,
+                                             gboolean       closing);
+static void   script_fu_font_callback       (gpointer       data,
+                                             const gchar   *name,
+                                             gboolean       closing);
+static void   script_fu_palette_callback    (gpointer       data,
+                                             const gchar   *name,
+                                             gboolean       closing);
+static void   script_fu_brush_callback      (gpointer       data,
+                                             const gchar   *name,
+                                             gdouble        opacity,
+                                             gint           spacing,
+                                             GimpLayerMode  paint_mode,
+                                             gint           width,
+                                             gint           height,
+                                             const guchar  *mask_data,
+                                             gboolean       closing);
+static void   script_fu_flush_events         (void);
+static void   script_fu_activate_main_dialog (void);
+
+
+/*
+ *  Local variables
+ */
+
+static SFInterface       *sf_interface = NULL;  /*  there can only be at most
+                                                 *  one interactive interface
+                                                 */
+
+static GimpPDBStatusType  sf_status    = GIMP_PDB_SUCCESS;
+
+
+/*
+ *  Function definitions
+ */
+
+gboolean
+script_fu_interface_is_active (void)
+{
+  return (sf_interface != NULL);
+}
+
+void
+script_fu_interface_report_cc (const gchar *command)
+{
+  if (sf_interface == NULL)
+    return;
+
+  if (sf_interface->last_command &&
+      strcmp (sf_interface->last_command, command) == 0)
+    {
+      sf_interface->command_count++;
+
+      if (! g_str_has_prefix (command, "gimp-progress-"))
+        {
+          gchar *new_command;
+
+          new_command = g_strdup_printf ("%s <%d>",
+                                         command, sf_interface->command_count);
+          gtk_label_set_text (GTK_LABEL (sf_interface->progress_label),
+                              new_command);
+          g_free (new_command);
+        }
+    }
+  else
+    {
+      sf_interface->command_count = 1;
+
+      g_free (sf_interface->last_command);
+      sf_interface->last_command = g_strdup (command);
+
+      if (! g_str_has_prefix (command, "gimp-progress-"))
+        {
+          gtk_label_set_text (GTK_LABEL (sf_interface->progress_label),
+                              command);
+        }
+      else
+        {
+          gtk_label_set_text (GTK_LABEL (sf_interface->progress_label), "");
+        }
+    }
+
+  while (gtk_events_pending ())
+    gtk_main_iteration ();
+}
+
+GimpPDBStatusType
+script_fu_interface (SFScript  *script,
+                     gint       start_arg)
+{
+  GtkWidget    *dialog;
+  GtkWidget    *vbox;
+  GtkWidget    *vbox2;
+  GtkSizeGroup *group;
+  GSList       *list;
+  gchar        *title;
+  gint          i;
+
+  static gboolean gtk_initted = FALSE;
+
+  /* Simply return if there is already an interface. This is an
+   * ugly workaround for the fact that we can not process two
+   * scripts at a time.
+   */
+  if (sf_interface != NULL)
+    {
+      gchar *message =
+        g_strdup_printf ("%s\n\n%s",
+                         _("Script-Fu cannot process two scripts "
+                           "at the same time."),
+                         _("You are already running the \"%s\" script."));
+
+      g_message (message, sf_interface->title);
+      g_free (message);
+
+      return GIMP_PDB_CANCEL;
+    }
+
+  g_return_val_if_fail (script != NULL, FALSE);
+
+  if (!gtk_initted)
+    {
+      INIT_I18N();
+
+      gimp_ui_init ("script-fu", TRUE);
+
+      gtk_initted = TRUE;
+    }
+
+  sf_status = GIMP_PDB_SUCCESS;
+
+  sf_interface = g_slice_new0 (SFInterface);
+
+  sf_interface->widgets = g_new0 (GtkWidget *, script->n_args);
+  sf_interface->title   = script_fu_script_get_title (script);
+
+  title = g_strdup_printf (_("Script-Fu: %s"), sf_interface->title);
+
+  sf_interface->dialog = dialog =
+    gimp_dialog_new (title, "gimp-script-fu",
+                     NULL, 0,
+                     gimp_standard_help_func, script->name,
+
+                     _("_Reset"),  RESPONSE_RESET,
+                     _("_Cancel"), GTK_RESPONSE_CANCEL,
+                     _("_OK"),     GTK_RESPONSE_OK,
+
+                     NULL);
+  g_free (title);
+
+  gtk_dialog_set_alternative_button_order (GTK_DIALOG (dialog),
+                                           RESPONSE_RESET,
+                                           GTK_RESPONSE_OK,
+                                           GTK_RESPONSE_CANCEL,
+                                           -1);
+
+  gimp_window_set_transient (GTK_WINDOW (dialog));
+
+  g_signal_connect (dialog, "response",
+                    G_CALLBACK (script_fu_response),
+                    script);
+
+  g_signal_connect_swapped (dialog, "destroy",
+                            G_CALLBACK (script_fu_interface_quit),
+                            script);
+
+  gtk_window_set_resizable (GTK_WINDOW (dialog), TRUE);
+
+  vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 12);
+  gtk_container_set_border_width (GTK_CONTAINER (vbox), 12);
+  gtk_box_pack_start (GTK_BOX (gtk_dialog_get_content_area (GTK_DIALOG (dialog))),
+                      vbox, TRUE, TRUE, 0);
+  gtk_widget_show (vbox);
+
+  /*  The argument table  */
+  sf_interface->table = gtk_table_new (script->n_args - start_arg, 3, FALSE);
+
+  gtk_table_set_col_spacings (GTK_TABLE (sf_interface->table), 6);
+  gtk_table_set_row_spacings (GTK_TABLE (sf_interface->table), 6);
+  gtk_box_pack_start (GTK_BOX (vbox), sf_interface->table, FALSE, FALSE, 0);
+  gtk_widget_show (sf_interface->table);
+
+  group = gtk_size_group_new (GTK_SIZE_GROUP_HORIZONTAL);
+
+  for (i = start_arg; i < script->n_args; i++)
+    {
+      GtkWidget *widget       = NULL;
+      gchar     *label_text;
+      gfloat     label_yalign = 0.5;
+      gint      *ID_ptr       = NULL;
+      gint       row          = i;
+      gboolean   left_align   = FALSE;
+      SFArg     *arg          = &script->args[i];
+
+      row -= start_arg;
+
+      /*  we add a colon after the label;
+       *  some languages want an extra space here
+       */
+      label_text = g_strdup_printf (_("%s:"), arg->label);
+
+      switch (arg->type)
+        {
+        case SF_IMAGE:
+        case SF_DRAWABLE:
+        case SF_LAYER:
+        case SF_CHANNEL:
+        case SF_VECTORS:
+          switch (arg->type)
+            {
+            case SF_IMAGE:
+              widget = gimp_image_combo_box_new (NULL, NULL);
+              ID_ptr = &arg->value.sfa_image;
+              break;
+
+            case SF_DRAWABLE:
+              widget = gimp_drawable_combo_box_new (NULL, NULL);
+              ID_ptr = &arg->value.sfa_drawable;
+              break;
+
+            case SF_LAYER:
+              widget = gimp_layer_combo_box_new (NULL, NULL);
+              ID_ptr = &arg->value.sfa_layer;
+              break;
+
+            case SF_CHANNEL:
+              widget = gimp_channel_combo_box_new (NULL, NULL);
+              ID_ptr = &arg->value.sfa_channel;
+              break;
+
+            case SF_VECTORS:
+              widget = gimp_vectors_combo_box_new (NULL, NULL);
+              ID_ptr = &arg->value.sfa_vectors;
+              break;
+
+            default:
+              break;
+            }
+
+          gimp_int_combo_box_connect (GIMP_INT_COMBO_BOX (widget), *ID_ptr,
+                                      G_CALLBACK (gimp_int_combo_box_get_active),
+                                      ID_ptr);
+          break;
+
+        case SF_COLOR:
+          {
+            GimpColorConfig *config;
+
+            left_align = TRUE;
+            widget = gimp_color_button_new (_("Script-Fu Color Selection"),
+                                            COLOR_SAMPLE_WIDTH,
+                                            COLOR_SAMPLE_HEIGHT,
+                                            &arg->value.sfa_color,
+                                            GIMP_COLOR_AREA_FLAT);
+
+            gimp_color_button_set_update (GIMP_COLOR_BUTTON (widget), TRUE);
+
+            config = gimp_get_color_configuration ();
+            gimp_color_button_set_color_config (GIMP_COLOR_BUTTON (widget),
+                                                config);
+            g_object_unref (config);
+
+            g_signal_connect (widget, "color-changed",
+                              G_CALLBACK (gimp_color_button_get_color),
+                              &arg->value.sfa_color);
+          }
+          break;
+
+        case SF_TOGGLE:
+          g_free (label_text);
+          label_text = NULL;
+          widget = gtk_check_button_new_with_mnemonic (arg->label);
+          gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (widget),
+                                        arg->value.sfa_toggle);
+
+          g_signal_connect (widget, "toggled",
+                            G_CALLBACK (gimp_toggle_button_update),
+                            &arg->value.sfa_toggle);
+          break;
+
+        case SF_VALUE:
+        case SF_STRING:
+          widget = gtk_entry_new ();
+          gtk_widget_set_size_request (widget, TEXT_WIDTH, -1);
+          gtk_entry_set_activates_default (GTK_ENTRY (widget), TRUE);
+
+          gtk_entry_set_text (GTK_ENTRY (widget), arg->value.sfa_value);
+          break;
+
+        case SF_TEXT:
+          {
+            GtkWidget     *view;
+            GtkTextBuffer *buffer;
+
+            widget = gtk_scrolled_window_new (NULL, NULL);
+            gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (widget),
+                                                 GTK_SHADOW_IN);
+            gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (widget),
+                                            GTK_POLICY_AUTOMATIC,
+                                            GTK_POLICY_AUTOMATIC);
+            gtk_widget_set_size_request (widget, TEXT_WIDTH, -1);
+
+            view = gtk_text_view_new ();
+            gtk_container_add (GTK_CONTAINER (widget), view);
+            gtk_widget_show (view);
+
+            buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (view));
+            gtk_text_view_set_editable (GTK_TEXT_VIEW (view), TRUE);
+
+            gtk_text_buffer_set_text (buffer, arg->value.sfa_value, -1);
+
+            label_yalign = 0.0;
+          }
+          break;
+
+        case SF_ADJUSTMENT:
+          switch (arg->default_value.sfa_adjustment.type)
+            {
+            case SF_SLIDER:
+              arg->value.sfa_adjustment.adj = (GtkAdjustment *)
+                gimp_scale_entry_new (GTK_TABLE (sf_interface->table),
+                                      0, row,
+                                      label_text, SLIDER_WIDTH, -1,
+                                      arg->value.sfa_adjustment.value,
+                                      arg->default_value.sfa_adjustment.lower,
+                                      arg->default_value.sfa_adjustment.upper,
+                                      arg->default_value.sfa_adjustment.step,
+                                      arg->default_value.sfa_adjustment.page,
+                                      arg->default_value.sfa_adjustment.digits,
+                                      TRUE, 0.0, 0.0,
+                                      NULL, NULL);
+              gtk_entry_set_activates_default (GIMP_SCALE_ENTRY_SPINBUTTON (arg->value.sfa_adjustment.adj), TRUE);
+              break;
+
+            default:
+              g_warning ("unexpected adjustment type: %d",
+                         arg->default_value.sfa_adjustment.type);
+              /* fallthrough */
+
+            case SF_SPINNER:
+              left_align = TRUE;
+              arg->value.sfa_adjustment.adj = (GtkAdjustment *)
+                gtk_adjustment_new (arg->value.sfa_adjustment.value,
+                                    arg->default_value.sfa_adjustment.lower,
+                                    arg->default_value.sfa_adjustment.upper,
+                                    arg->default_value.sfa_adjustment.step,
+                                    arg->default_value.sfa_adjustment.page,
+                                    0);
+              widget = gimp_spin_button_new (arg->value.sfa_adjustment.adj,
+                                             arg->default_value.sfa_adjustment.step,
+                                             arg->default_value.sfa_adjustment.digits);
+              gtk_spin_button_set_numeric (GTK_SPIN_BUTTON (widget), TRUE);
+              gtk_entry_set_activates_default (GTK_ENTRY (widget), TRUE);
+              break;
+            }
+
+          g_signal_connect (arg->value.sfa_adjustment.adj,
+                            "value-changed",
+                            G_CALLBACK (gimp_double_adjustment_update),
+                            &arg->value.sfa_adjustment.value);
+          break;
+
+        case SF_FILENAME:
+        case SF_DIRNAME:
+          if (arg->type == SF_FILENAME)
+            widget = gtk_file_chooser_button_new (_("Script-Fu File Selection"),
+                                                  GTK_FILE_CHOOSER_ACTION_OPEN);
+          else
+            widget = gtk_file_chooser_button_new (_("Script-Fu Folder Selection"),
+                                                  GTK_FILE_CHOOSER_ACTION_SELECT_FOLDER);
+
+          if (arg->value.sfa_file.filename)
+            gtk_file_chooser_set_filename (GTK_FILE_CHOOSER (widget),
+                                           arg->value.sfa_file.filename);
+
+          g_signal_connect (widget, "selection-changed",
+                            G_CALLBACK (script_fu_file_callback),
+                            &arg->value.sfa_file);
+          break;
+
+        case SF_FONT:
+          widget = gimp_font_select_button_new (_("Script-Fu Font Selection"),
+                                                arg->value.sfa_font);
+          g_signal_connect_swapped (widget, "font-set",
+                                    G_CALLBACK (script_fu_font_callback),
+                                    &arg->value.sfa_font);
+          break;
+
+        case SF_PALETTE:
+          widget = gimp_palette_select_button_new (_("Script-Fu Palette Selection"),
+                                                   arg->value.sfa_palette);
+          g_signal_connect_swapped (widget, "palette-set",
+                                    G_CALLBACK (script_fu_palette_callback),
+                                    &arg->value.sfa_palette);
+          break;
+
+        case SF_PATTERN:
+          left_align = TRUE;
+          widget = gimp_pattern_select_button_new (_("Script-Fu Pattern Selection"),
+                                                   arg->value.sfa_pattern);
+          g_signal_connect_swapped (widget, "pattern-set",
+                                    G_CALLBACK (script_fu_pattern_callback),
+                                    &arg->value.sfa_pattern);
+          break;
+
+        case SF_GRADIENT:
+          left_align = TRUE;
+          widget = gimp_gradient_select_button_new (_("Script-Fu Gradient Selection"),
+                                                    arg->value.sfa_gradient);
+          g_signal_connect_swapped (widget, "gradient-set",
+                                    G_CALLBACK (script_fu_gradient_callback),
+                                    &arg->value.sfa_gradient);
+          break;
+
+        case SF_BRUSH:
+          left_align = TRUE;
+          widget = gimp_brush_select_button_new (_("Script-Fu Brush Selection"),
+                                                 arg->value.sfa_brush.name,
+                                                 arg->value.sfa_brush.opacity,
+                                                 arg->value.sfa_brush.spacing,
+                                                 arg->value.sfa_brush.paint_mode);
+          g_signal_connect_swapped (widget, "brush-set",
+                                    G_CALLBACK (script_fu_brush_callback),
+                                    &arg->value.sfa_brush);
+          break;
+
+        case SF_OPTION:
+          widget = gtk_combo_box_text_new ();
+          for (list = arg->default_value.sfa_option.list;
+               list;
+               list = g_slist_next (list))
+            {
+              gtk_combo_box_text_append_text (GTK_COMBO_BOX_TEXT (widget),
+                                              list->data);
+            }
+
+          gtk_combo_box_set_active (GTK_COMBO_BOX (widget),
+                                    arg->value.sfa_option.history);
+
+          g_signal_connect (widget, "changed",
+                            G_CALLBACK (script_fu_combo_callback),
+                            &arg->value.sfa_option);
+          break;
+
+        case SF_ENUM:
+          widget = gimp_enum_combo_box_new (g_type_from_name (arg->default_value.sfa_enum.type_name));
+
+          gimp_int_combo_box_set_active (GIMP_INT_COMBO_BOX (widget),
+                                         arg->value.sfa_enum.history);
+
+          g_signal_connect (widget, "changed",
+                            G_CALLBACK (gimp_int_combo_box_get_active),
+                            &arg->value.sfa_enum.history);
+          break;
+
+        case SF_DISPLAY:
+          break;
+        }
+
+      if (widget)
+        {
+          if (label_text)
+            {
+              gimp_table_attach_aligned (GTK_TABLE (sf_interface->table),
+                                         0, row,
+                                         label_text, 0.0, label_yalign,
+                                         widget, 2, left_align);
+              g_free (label_text);
+            }
+          else
+            {
+              gtk_table_attach (GTK_TABLE (sf_interface->table),
+                                widget, 0, 3, row, row + 1,
+                                GTK_EXPAND | GTK_FILL, GTK_FILL, 0, 0);
+              gtk_widget_show (widget);
+            }
+
+          if (left_align)
+            gtk_size_group_add_widget (group, widget);
+        }
+
+      sf_interface->widgets[i] = widget;
+    }
+
+  g_object_unref (group);
+
+  /* the script progress bar */
+  vbox2 = gtk_box_new (GTK_ORIENTATION_VERTICAL, 6);
+  gtk_box_pack_end (GTK_BOX (vbox), vbox2, FALSE, FALSE, 0);
+  gtk_widget_show (vbox2);
+
+  sf_interface->progress_bar = gimp_progress_bar_new ();
+  gtk_box_pack_start (GTK_BOX (vbox2), sf_interface->progress_bar,
+                      FALSE, FALSE, 0);
+  gtk_widget_show (sf_interface->progress_bar);
+
+  sf_interface->progress_label = gtk_label_new (NULL);
+  gtk_label_set_xalign (GTK_LABEL (sf_interface->progress_label), 0.0);
+  gtk_label_set_ellipsize (GTK_LABEL (sf_interface->progress_label),
+                           PANGO_ELLIPSIZE_MIDDLE);
+  gimp_label_set_attributes (GTK_LABEL (sf_interface->progress_label),
+                             PANGO_ATTR_STYLE, PANGO_STYLE_ITALIC,
+                             -1);
+  gtk_box_pack_start (GTK_BOX (vbox2), sf_interface->progress_label,
+                      FALSE, FALSE, 0);
+  gtk_widget_show (sf_interface->progress_label);
+#ifdef G_OS_WIN32
+    {
+      HWND foreground = GetForegroundWindow ();
+#endif
+
+  gtk_widget_show (dialog);
+
+  gtk_main ();
+
+#ifdef G_OS_WIN32
+      if (! GetForegroundWindow ())
+        SetForegroundWindow (foreground);
+    }
+#endif
+  return sf_status;
+}
+
+static void
+script_fu_interface_quit (SFScript *script)
+{
+  gint i;
+
+  g_return_if_fail (script != NULL);
+  g_return_if_fail (sf_interface != NULL);
+
+  g_free (sf_interface->title);
+
+  for (i = 0; i < script->n_args; i++)
+    switch (script->args[i].type)
+      {
+      case SF_FONT:
+      case SF_PALETTE:
+      case SF_PATTERN:
+      case SF_GRADIENT:
+      case SF_BRUSH:
+        gimp_select_button_close_popup
+          (GIMP_SELECT_BUTTON (sf_interface->widgets[i]));
+        break;
+
+      default:
+        break;
+      }
+
+  g_free (sf_interface->widgets);
+  g_free (sf_interface->last_command);
+
+  g_slice_free (SFInterface, sf_interface);
+  sf_interface = NULL;
+
+  /*  We do not call gtk_main_quit() earlier to reduce the possibility
+   *  that script_fu_script_proc() is called from gimp_extension_process()
+   *  while we are not finished with the current script. This sucks!
+   */
+
+  gtk_main_quit ();
+}
+
+static void
+script_fu_file_callback (GtkWidget  *widget,
+                         SFFilename *file)
+{
+  if (file->filename)
+    g_free (file->filename);
+
+  file->filename = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (widget));
+  script_fu_activate_main_dialog ();
+}
+
+static void
+script_fu_combo_callback (GtkWidget *widget,
+                          SFOption  *option)
+{
+  option->history = gtk_combo_box_get_active (GTK_COMBO_BOX (widget));
+}
+
+static void
+script_fu_string_update (gchar       **dest,
+                         const gchar  *src)
+{
+  if (*dest)
+    g_free (*dest);
+
+  *dest = g_strdup (src);
+}
+
+static void
+script_fu_pattern_callback (gpointer      data,
+                            const gchar  *name,
+                            gint          width,
+                            gint          height,
+                            gint          bytes,
+                            const guchar *mask_data,
+                            gboolean      closing)
+{
+  script_fu_string_update (data, name);
+  if (closing) script_fu_activate_main_dialog ();
+}
+
+static void
+script_fu_gradient_callback (gpointer       data,
+                             const gchar   *name,
+                             gint           width,
+                             const gdouble *mask_data,
+                             gboolean       closing)
+{
+  script_fu_string_update (data, name);
+  if (closing) script_fu_activate_main_dialog ();
+}
+
+static void
+script_fu_font_callback (gpointer     data,
+                         const gchar *name,
+                         gboolean     closing)
+{
+  script_fu_string_update (data, name);
+  if (closing) script_fu_activate_main_dialog ();
+}
+
+static void
+script_fu_palette_callback (gpointer     data,
+                            const gchar *name,
+                            gboolean     closing)
+{
+  script_fu_string_update (data, name);
+  if (closing) script_fu_activate_main_dialog ();
+}
+
+static void
+script_fu_brush_callback (gpointer       data,
+                          const gchar   *name,
+                          gdouble        opacity,
+                          gint           spacing,
+                          GimpLayerMode  paint_mode,
+                          gint           width,
+                          gint           height,
+                          const guchar  *mask_data,
+                          gboolean       closing)
+{
+  SFBrush *brush = data;
+
+  g_free (brush->name);
+
+  brush->name       = g_strdup (name);
+  brush->opacity    = opacity;
+  brush->spacing    = spacing;
+  brush->paint_mode = paint_mode;
+
+  if (closing) script_fu_activate_main_dialog ();
+}
+
+static void
+unset_transient_for (GtkWidget *dialog)
+{
+  GdkWindow *window = gtk_widget_get_window (dialog);
+
+  if (window)
+    gdk_property_delete (window,
+                         gdk_atom_intern_static_string ("WM_TRANSIENT_FOR"));
+}
+
+static void
+script_fu_response (GtkWidget *widget,
+                    gint       response_id,
+                    SFScript  *script)
+{
+  GtkWidget *action_area;
+
+  action_area = gtk_dialog_get_action_area (GTK_DIALOG (sf_interface->dialog));
+
+  if (! gtk_widget_is_sensitive (action_area))
+    return;
+
+  switch (response_id)
+    {
+    case RESPONSE_RESET:
+      script_fu_reset (script);
+      break;
+
+    case GTK_RESPONSE_OK:
+      gtk_widget_set_sensitive (sf_interface->table, FALSE);
+      gtk_widget_set_sensitive (action_area, FALSE);
+
+      script_fu_ok (script);
+
+      script_fu_flush_events ();
+      /*
+       * The script could have created a new GimpImageWindow, so
+       * unset the transient-for property not to focus the
+       * ImageWindow from which the script was started
+       */
+      unset_transient_for (sf_interface->dialog);
+
+      gtk_widget_destroy (sf_interface->dialog);
+      break;
+
+    default:
+      sf_status = GIMP_PDB_CANCEL;
+
+      script_fu_flush_events ();
+      gtk_widget_destroy (sf_interface->dialog);
+      break;
+    }
+
+  script_fu_flush_events ();
+}
+
+static void
+script_fu_ok (SFScript *script)
+{
+  GString *output;
+  gchar   *command;
+  gint     i;
+
+  for (i = 0; i < script->n_args; i++)
+    {
+      SFArgValue *arg_value = &script->args[i].value;
+      GtkWidget  *widget    = sf_interface->widgets[i];
+
+      switch (script->args[i].type)
+        {
+        case SF_IMAGE:
+        case SF_DRAWABLE:
+        case SF_LAYER:
+        case SF_CHANNEL:
+        case SF_VECTORS:
+        case SF_DISPLAY:
+        case SF_COLOR:
+        case SF_TOGGLE:
+          break;
+
+        case SF_VALUE:
+        case SF_STRING:
+          g_free (arg_value->sfa_value);
+          arg_value->sfa_value =
+            g_strdup (gtk_entry_get_text (GTK_ENTRY (widget)));
+          break;
+
+        case SF_TEXT:
+          {
+            GtkWidget     *view;
+            GtkTextBuffer *buffer;
+            GtkTextIter    start, end;
+
+            view = gtk_bin_get_child (GTK_BIN (widget));
+            buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (view));
+
+            gtk_text_buffer_get_start_iter (buffer, &start);
+            gtk_text_buffer_get_end_iter (buffer, &end);
+
+            g_free (arg_value->sfa_value);
+            arg_value->sfa_value = gtk_text_buffer_get_text (buffer,
+                                                             &start, &end,
+                                                             FALSE);
+          }
+          break;
+
+        case SF_ADJUSTMENT:
+        case SF_FILENAME:
+        case SF_DIRNAME:
+        case SF_FONT:
+        case SF_PALETTE:
+        case SF_PATTERN:
+        case SF_GRADIENT:
+        case SF_BRUSH:
+        case SF_OPTION:
+        case SF_ENUM:
+          break;
+        }
+    }
+
+  command = script_fu_script_get_command (script);
+
+  /*  run the command through the interpreter  */
+  output = g_string_new (NULL);
+  ts_register_output_func (ts_gstring_output_func, output);
+
+  gimp_plugin_set_pdb_error_handler (GIMP_PDB_ERROR_HANDLER_PLUGIN);
+
+  if (ts_interpret_string (command))
+    {
+      gchar *message = g_strdup_printf (_("Error while executing %s:"),
+                                        script->name);
+
+      g_message ("%s\n\n%s", message, output->str);
+      g_free (message);
+    }
+
+  gimp_plugin_set_pdb_error_handler (GIMP_PDB_ERROR_HANDLER_INTERNAL);
+
+  g_string_free (output, TRUE);
+
+  g_free (command);
+}
+
+static void
+script_fu_reset (SFScript *script)
+{
+  gint i;
+
+  script_fu_script_reset (script, FALSE);
+
+  for (i = 0; i < script->n_args; i++)
+    {
+      SFArgValue *value  = &script->args[i].value;
+      GtkWidget  *widget = sf_interface->widgets[i];
+
+      switch (script->args[i].type)
+        {
+        case SF_IMAGE:
+        case SF_DRAWABLE:
+        case SF_LAYER:
+        case SF_CHANNEL:
+        case SF_VECTORS:
+        case SF_DISPLAY:
+          break;
+
+        case SF_COLOR:
+          gimp_color_button_set_color (GIMP_COLOR_BUTTON (widget),
+                                       &value->sfa_color);
+          break;
+
+        case SF_TOGGLE:
+          gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (widget),
+                                        value->sfa_toggle);
+          break;
+
+        case SF_VALUE:
+        case SF_STRING:
+          gtk_entry_set_text (GTK_ENTRY (widget), value->sfa_value);
+          break;
+
+        case SF_TEXT:
+          {
+            GtkWidget     *view;
+            GtkTextBuffer *buffer;
+
+            view = gtk_bin_get_child (GTK_BIN (widget));
+            buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (view));
+
+            gtk_text_buffer_set_text (buffer, value->sfa_value, -1);
+          }
+          break;
+
+        case SF_ADJUSTMENT:
+          gtk_adjustment_set_value (value->sfa_adjustment.adj,
+                                    value->sfa_adjustment.value);
+          break;
+
+        case SF_FILENAME:
+        case SF_DIRNAME:
+          gtk_file_chooser_set_filename (GTK_FILE_CHOOSER (widget),
+                                         value->sfa_file.filename);
+          break;
+
+        case SF_FONT:
+          gimp_font_select_button_set_font (GIMP_FONT_SELECT_BUTTON (widget),
+                                            value->sfa_font);
+          break;
+
+        case SF_PALETTE:
+          gimp_palette_select_button_set_palette (GIMP_PALETTE_SELECT_BUTTON (widget),
+                                                  value->sfa_palette);
+          break;
+
+        case SF_PATTERN:
+          gimp_pattern_select_button_set_pattern (GIMP_PATTERN_SELECT_BUTTON (widget),
+                                                  value->sfa_pattern);
+          break;
+
+        case SF_GRADIENT:
+          gimp_gradient_select_button_set_gradient (GIMP_GRADIENT_SELECT_BUTTON (widget),
+                                                    value->sfa_gradient);
+          break;
+
+        case SF_BRUSH:
+          gimp_brush_select_button_set_brush (GIMP_BRUSH_SELECT_BUTTON (widget),
+                                              value->sfa_brush.name,
+                                              value->sfa_brush.opacity,
+                                              value->sfa_brush.spacing,
+                                              value->sfa_brush.paint_mode);
+          break;
+
+        case SF_OPTION:
+          gtk_combo_box_set_active (GTK_COMBO_BOX (widget),
+                                    value->sfa_option.history);
+          break;
+
+        case SF_ENUM:
+          gimp_int_combo_box_set_active (GIMP_INT_COMBO_BOX (widget),
+                                         value->sfa_enum.history);
+          break;
+        }
+    }
+}
+
+
+/*
+ * Functions for window front/back management.
+ * These might only be necessary for MacOS.
+ *
+ * One problem is that the GIMP and the scriptfu extension process are separate "apps".
+ * Closing a main scriptfu dialog does not terminate the scriptfu extension process,
+ * and MacOS does not then activate some other app.
+ * On other platforms, the select dialogs are transient to the GIMP app's progress bar,
+ * but that doesn't seem to work on MacOS.
+ *
+ * Also some of the GIMP "select" widgets (for brush, pattern, gradient, font, palette)
+ * for plugins are independent and tool like:
+ * their popup dialog window is not a child of the button which pops it up.
+ * The button "owns" the popup but GDK is not aware of that relation,
+ * and so does not handle closing automatically.
+ * There are PDB callbacks in each direction:
+ * from the select dialog to the scriptfu extension on user's new selection
+ * from the scriptfu extension to the select dialog on closing
+ *
+ * This might change in the future.
+ * 1) in GIMP 3, scriptfu and python plugins should use a common API for a control dialog,
+ * (script-fu-interface.c is obsoleted?)
+ * 2) the code for select dialogs is significantly changed in GIMP 3
+ * 3) Gtk3 might solve this (now using Gtk2.)
+ */
+
+/* On MacOS, without calls to this, scriptfu dialog gets spinning ball of doom,
+ * meaning MacOS thinks app is not responding to events,
+ * and dialog stays visible even after destroyed.
+ */
+static void
+script_fu_flush_events (void)
+{
+  /* Ensure all GLib events have been processed. */
+
+  /* Former code also hid GUI of the script-fu extension process using: [NSApp hide: nil];
+   * (In Objective-C, get instance of NSApplication and send it a "hide" message with nil sender.)
+   * Hiding is not necessary, since this is only called when
+   * scriptfu is done interpreting the current script and is destroying its widgets.
+   */
+#ifdef GDK_WINDOWING_QUARTZ
+  /* Alternative code might be a call to gtk_main()?
+   * This is not an infinite loop since there are finite events, and iteration reduces them.
+   * Somehow, this lets MacOS think the app is responsive.
+   */
+  while (g_main_context_pending (NULL))
+    g_main_context_iteration (NULL, TRUE);
+#else
+  /* empty function, optimized out. */
+#endif
+}
+
+
+/* On MacOS, without calls to this,
+ * when user closes GIMP "select" dialogs (child of main dialog)
+ * the main scriptfu dialog can be obscured by GIMP main window.
+ * The main scriptfu dialog must be visible so user can choose the OK button,
+ * and it contains a progress bar.
+ *
+ * Note the color "select" dialog has no callback specialized for scriptfu.
+ * And the file "chooser" dialog is also different.
+ */
+static void
+script_fu_activate_main_dialog (void)
+{
+  /* Ensure the main dialog of the script-fu extension process is not obscured. */
+#ifdef GDK_WINDOWING_QUARTZ
+  /* In Objective-C, get instance of NSApplication
+   * and send it a "activateIgnoringOtherApps" message, i.e. bring to front.
+   */
+  [NSApp activateIgnoringOtherApps: YES];
+#else
+  /* empty function, optimized out. */
+#endif
+}
diff --git a/plug-ins/script-fu/script-fu-interface.h b/plug-ins/script-fu/script-fu-interface.h
new file mode 100644
index 0000000..3d5091c
--- /dev/null
+++ b/plug-ins/script-fu/script-fu-interface.h
@@ -0,0 +1,28 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef __SCRIPT_FU_INTERFACE_H__
+#define __SCRIPT_FU_INTERFACE_H__
+
+
+GimpPDBStatusType  script_fu_interface           (SFScript     *script,
+                                                  gint          start_arg);
+void               script_fu_interface_report_cc (const gchar  *command);
+gboolean           script_fu_interface_is_active (void);
+
+
+#endif /*  __SCRIPT_FU_INTERFACE_H__  */
diff --git a/plug-ins/script-fu/script-fu-intl.h b/plug-ins/script-fu/script-fu-intl.h
new file mode 100644
index 0000000..462582c
--- /dev/null
+++ b/plug-ins/script-fu/script-fu-intl.h
@@ -0,0 +1,43 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * script-fu-intl.h
+ *
+ * This library is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library.  If not, see
+ * <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef __SCRIPT_FU_INTL_H__
+#define __SCRIPT_FU_INTL_H__
+
+#ifndef GETTEXT_PACKAGE
+#error "config.h must be included prior to script-fu-intl.h"
+#endif
+
+#include <glib/gi18n.h>
+
+
+#ifndef HAVE_BIND_TEXTDOMAIN_CODESET
+#    define bind_textdomain_codeset(Domain, Codeset) (Domain)
+#endif
+
+#define INIT_I18N()	G_STMT_START{			          \
+  bindtextdomain (GETTEXT_PACKAGE"-script-fu",                    \
+                  gimp_locale_directory ());                      \
+  bind_textdomain_codeset (GETTEXT_PACKAGE"-script-fu", "UTF-8"); \
+  textdomain (GETTEXT_PACKAGE"-script-fu");                       \
+}G_STMT_END
+
+
+#endif /* __SCRIPT_FU_INTL_H__ */
diff --git a/plug-ins/script-fu/script-fu-regex.c b/plug-ins/script-fu/script-fu-regex.c
new file mode 100644
index 0000000..02255d2
--- /dev/null
+++ b/plug-ins/script-fu/script-fu-regex.c
@@ -0,0 +1,179 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+/* Based on re.c
+ *
+ * Henry Spencer's implementation of Regular Expressions,
+ * used for TinyScheme
+ *
+ * Refurbished by Stephen Gildea
+ *
+ * Ported to GRegex and de-uglified by Michael Natterer
+ */
+
+#include "config.h"
+
+#include "tinyscheme/scheme-private.h"
+#include "script-fu-regex.h"
+
+
+/*  local function prototypes  */
+
+static pointer foreign_re_match (scheme  *sc,
+                                 pointer  args);
+static void    set_vector_elem  (pointer  vec,
+                                 int      ielem,
+                                 pointer  newel);
+
+
+/*  public functions  */
+
+void
+script_fu_regex_init (scheme *sc)
+{
+  sc->vptr->scheme_define (sc,
+                           sc->global_env,
+                           sc->vptr->mk_symbol(sc,"re-match"),
+                           sc->vptr->mk_foreign_func(sc, foreign_re_match));
+
+#if 0
+  sc->vptr->load_string
+    (sc,
+     ";; return the substring of STRING matched in MATCH-VECTOR,\n"
+     ";; the Nth subexpression match (default 0).\n"
+     "\n"
+     "(define (re-match-nth string match-vector . n)\n"
+     "  (let ((n (if (pair? n) (car n) 0)))\n"
+     "    (substring string (car (vector-ref match-vector n))\n"
+     "                      (cdr (vector-ref match-vector n)))))\n"
+     "(define (re-before-nth string match-vector . n)\n"
+     "  (let ((n (if (pair? n) (car n) 0)))\n"
+     "    (substring string 0 (car (vector-ref match-vector n)))))\n"
+     "(define (re-after-nth string match-vector . n)\n"
+     "  (let ((n (if (pair? n) (car n) 0)))\n"
+     "    (substring string (cdr (vector-ref match-vector n))\n"
+     "                      (string-length string))))\n");
+#endif
+}
+
+
+/*  private functions  */
+
+static pointer
+foreign_re_match (scheme  *sc,
+                  pointer  args)
+{
+  pointer   retval = sc->F;
+  gboolean  success;
+  gboolean  is_valid_utf8;
+  GRegex   *regex;
+  pointer   first_arg, second_arg;
+  pointer   third_arg = sc->NIL;
+  char     *string;
+  char     *pattern;
+  int       num = 0;
+
+  if (!((args != sc->NIL)
+        && sc->vptr->is_string ((first_arg = sc->vptr->pair_car (args)))
+        && (args = sc->vptr->pair_cdr (args))
+        && sc->vptr->is_pair (args)
+        && sc->vptr->is_string ((second_arg = sc->vptr->pair_car (args)))))
+    {
+      return sc->F;
+    }
+
+  pattern = sc->vptr->string_value (first_arg);
+  string  = sc->vptr->string_value (second_arg);
+
+  is_valid_utf8 = g_utf8_validate (string, -1, NULL);
+
+  args = sc->vptr->pair_cdr (args);
+
+  if (args != sc->NIL)
+    {
+      if (!(sc->vptr->is_pair (args)
+            && sc->vptr->is_vector ((third_arg = sc->vptr->pair_car (args)))))
+        {
+          return sc->F;
+        }
+      else
+        {
+          num = third_arg->_object._number.value.ivalue;
+        }
+    }
+
+  regex = g_regex_new (pattern, G_REGEX_EXTENDED, 0, NULL);
+  if (! regex)
+    return sc->F;
+
+  if (! num)
+    {
+      success = g_regex_match (regex, string, 0, NULL);
+    }
+  else
+    {
+      GMatchInfo *match_info;
+      gint        i;
+
+      success = g_regex_match (regex, string, 0, &match_info);
+
+      for (i = 0; i < num; i++)
+        {
+          gint start, end;
+
+          g_match_info_fetch_pos (match_info, i, &start, &end);
+
+          if (is_valid_utf8)
+            {
+              start = g_utf8_pointer_to_offset (string, string + start);
+              end   = g_utf8_pointer_to_offset (string, string + end);
+            }
+
+#undef cons
+          set_vector_elem (third_arg, i,
+                           sc->vptr->cons(sc,
+                                          sc->vptr->mk_integer(sc, start),
+                                          sc->vptr->mk_integer(sc, end)));
+        }
+
+      g_match_info_free (match_info);
+    }
+
+  if (success)
+    retval = sc->T;
+
+  g_regex_unref (regex);
+
+  return retval;
+}
+
+static void
+set_vector_elem (pointer vec,
+                 int     ielem,
+                 pointer newel)
+{
+  int n = ielem / 2;
+
+  if (ielem % 2 == 0)
+    {
+      vec[1 + n]._object._cons._car = newel;
+    }
+  else
+    {
+      vec[1 + n]._object._cons._cdr = newel;
+    }
+}
diff --git a/plug-ins/script-fu/script-fu-regex.h b/plug-ins/script-fu/script-fu-regex.h
new file mode 100644
index 0000000..9c0cbb2
--- /dev/null
+++ b/plug-ins/script-fu/script-fu-regex.h
@@ -0,0 +1,25 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef __SCRIPT_FU_REGEX_H__
+#define __SCRIPT_FU_REGEX_H__
+
+
+void   script_fu_regex_init (scheme *sc);
+
+
+#endif /* __SCRIPT_FU_REGEX_H__ */
diff --git a/plug-ins/script-fu/script-fu-script.c b/plug-ins/script-fu/script-fu-script.c
new file mode 100644
index 0000000..cd37163
--- /dev/null
+++ b/plug-ins/script-fu/script-fu-script.c
@@ -0,0 +1,780 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <string.h>
+
+#include <libgimp/gimp.h>
+#include <libgimp/gimpui.h>
+
+#include "tinyscheme/scheme-private.h"
+
+#include "script-fu-types.h"
+
+#include "script-fu-script.h"
+#include "script-fu-scripts.h"
+#include "script-fu-utils.h"
+
+#include "script-fu-intl.h"
+
+
+/*
+ *  Local Functions
+ */
+
+static gboolean   script_fu_script_param_init (SFScript        *script,
+                                               gint             nparams,
+                                               const GimpParam *params,
+                                               SFArgType        type,
+                                               gint             n);
+
+
+/*
+ *  Function definitions
+ */
+
+SFScript *
+script_fu_script_new (const gchar *name,
+                      const gchar *menu_label,
+                      const gchar *blurb,
+                      const gchar *author,
+                      const gchar *copyright,
+                      const gchar *date,
+                      const gchar *image_types,
+                      gint         n_args)
+{
+  SFScript *script;
+
+  script = g_slice_new0 (SFScript);
+
+  script->name        = g_strdup (name);
+  script->menu_label  = g_strdup (menu_label);
+  script->blurb       = g_strdup (blurb);
+  script->author      = g_strdup (author);
+  script->copyright   = g_strdup (copyright);
+  script->date        = g_strdup (date);
+  script->image_types = g_strdup (image_types);
+
+  script->n_args = n_args;
+  script->args   = g_new0 (SFArg, script->n_args);
+
+  return script;
+}
+
+void
+script_fu_script_free (SFScript *script)
+{
+  gint i;
+
+  g_return_if_fail (script != NULL);
+
+  g_free (script->name);
+  g_free (script->blurb);
+  g_free (script->menu_label);
+  g_free (script->author);
+  g_free (script->copyright);
+  g_free (script->date);
+  g_free (script->image_types);
+
+  for (i = 0; i < script->n_args; i++)
+    {
+      SFArg *arg = &script->args[i];
+
+      g_free (arg->label);
+
+      switch (arg->type)
+        {
+        case SF_IMAGE:
+        case SF_DRAWABLE:
+        case SF_LAYER:
+        case SF_CHANNEL:
+        case SF_VECTORS:
+        case SF_DISPLAY:
+        case SF_COLOR:
+        case SF_TOGGLE:
+          break;
+
+        case SF_VALUE:
+        case SF_STRING:
+        case SF_TEXT:
+          g_free (arg->default_value.sfa_value);
+          g_free (arg->value.sfa_value);
+          break;
+
+        case SF_ADJUSTMENT:
+          break;
+
+        case SF_FILENAME:
+        case SF_DIRNAME:
+          g_free (arg->default_value.sfa_file.filename);
+          g_free (arg->value.sfa_file.filename);
+          break;
+
+        case SF_FONT:
+          g_free (arg->default_value.sfa_font);
+          g_free (arg->value.sfa_font);
+          break;
+
+        case SF_PALETTE:
+          g_free (arg->default_value.sfa_palette);
+          g_free (arg->value.sfa_palette);
+          break;
+
+        case SF_PATTERN:
+          g_free (arg->default_value.sfa_pattern);
+          g_free (arg->value.sfa_pattern);
+          break;
+
+        case SF_GRADIENT:
+          g_free (arg->default_value.sfa_gradient);
+          g_free (arg->value.sfa_gradient);
+          break;
+
+        case SF_BRUSH:
+          g_free (arg->default_value.sfa_brush.name);
+          g_free (arg->value.sfa_brush.name);
+          break;
+
+        case SF_OPTION:
+          g_slist_free_full (arg->default_value.sfa_option.list,
+                             (GDestroyNotify) g_free);
+          break;
+
+        case SF_ENUM:
+          g_free (arg->default_value.sfa_enum.type_name);
+          break;
+        }
+    }
+
+  g_free (script->args);
+
+  g_slice_free (SFScript, script);
+}
+
+void
+script_fu_script_install_proc (SFScript    *script,
+                               GimpRunProc  run_proc)
+{
+  const gchar  *menu_label = NULL;
+  GimpParamDef *args;
+  gint          i;
+
+  g_return_if_fail (script != NULL);
+  g_return_if_fail (run_proc != NULL);
+
+  /* Allow scripts with no menus */
+  if (strncmp (script->menu_label, "<None>", 6) != 0)
+    menu_label = script->menu_label;
+
+  args = g_new0 (GimpParamDef, script->n_args + 1);
+
+  args[0].type        = GIMP_PDB_INT32;
+  args[0].name        = "run-mode";
+  args[0].description = "The run mode { RUN-INTERACTIVE (0), RUN-NONINTERACTIVE (1) }";
+
+  for (i = 0; i < script->n_args; i++)
+    {
+      GimpPDBArgType  type = 0;
+      const gchar    *name = NULL;
+
+      switch (script->args[i].type)
+        {
+        case SF_IMAGE:
+          type = GIMP_PDB_IMAGE;
+          name = "image";
+          break;
+
+        case SF_DRAWABLE:
+          type = GIMP_PDB_DRAWABLE;
+          name = "drawable";
+          break;
+
+        case SF_LAYER:
+          type = GIMP_PDB_LAYER;
+          name = "layer";
+          break;
+
+        case SF_CHANNEL:
+          type = GIMP_PDB_CHANNEL;
+          name = "channel";
+          break;
+
+        case SF_VECTORS:
+          type = GIMP_PDB_VECTORS;
+          name = "vectors";
+          break;
+
+        case SF_DISPLAY:
+          type = GIMP_PDB_DISPLAY;
+          name = "display";
+          break;
+
+        case SF_COLOR:
+          type = GIMP_PDB_COLOR;
+          name = "color";
+          break;
+
+        case SF_TOGGLE:
+          type = GIMP_PDB_INT32;
+          name = "toggle";
+          break;
+
+        case SF_VALUE:
+          type = GIMP_PDB_STRING;
+          name = "value";
+          break;
+
+        case SF_STRING:
+        case SF_TEXT:
+          type = GIMP_PDB_STRING;
+          name = "string";
+          break;
+
+        case SF_ADJUSTMENT:
+          type = GIMP_PDB_FLOAT;
+          name = "value";
+          break;
+
+        case SF_FILENAME:
+          type = GIMP_PDB_STRING;
+          name = "filename";
+          break;
+
+        case SF_DIRNAME:
+          type = GIMP_PDB_STRING;
+          name = "dirname";
+          break;
+
+        case SF_FONT:
+          type = GIMP_PDB_STRING;
+          name = "font";
+          break;
+
+        case SF_PALETTE:
+          type = GIMP_PDB_STRING;
+          name = "palette";
+          break;
+
+        case SF_PATTERN:
+          type = GIMP_PDB_STRING;
+          name = "pattern";
+          break;
+
+        case SF_BRUSH:
+          type = GIMP_PDB_STRING;
+          name = "brush";
+          break;
+
+        case SF_GRADIENT:
+          type = GIMP_PDB_STRING;
+          name = "gradient";
+          break;
+
+        case SF_OPTION:
+          type = GIMP_PDB_INT32;
+          name = "option";
+          break;
+
+        case SF_ENUM:
+          type = GIMP_PDB_INT32;
+          name = "enum";
+          break;
+        }
+
+      args[i + 1].type        = type;
+      args[i + 1].name        = (gchar *) name;
+      args[i + 1].description = script->args[i].label;
+    }
+
+  gimp_install_temp_proc (script->name,
+                          script->blurb,
+                          "",
+                          script->author,
+                          script->copyright,
+                          script->date,
+                          menu_label,
+                          script->image_types,
+                          GIMP_TEMPORARY,
+                          script->n_args + 1, 0,
+                          args, NULL,
+                          run_proc);
+
+  g_free (args);
+}
+
+void
+script_fu_script_uninstall_proc (SFScript *script)
+{
+  g_return_if_fail (script != NULL);
+
+  gimp_uninstall_temp_proc (script->name);
+}
+
+gchar *
+script_fu_script_get_title (SFScript *script)
+{
+  gchar *title;
+  gchar *tmp;
+
+  g_return_val_if_fail (script != NULL, NULL);
+
+  /* strip mnemonics from the menupath */
+  title = gimp_strip_uline (script->menu_label);
+
+  /* if this looks like a full menu path, use only the last part */
+  if (title[0] == '<' && (tmp = strrchr (title, '/')) && tmp[1])
+    {
+      tmp = g_strdup (tmp + 1);
+
+      g_free (title);
+      title = tmp;
+    }
+
+  /* cut off ellipsis */
+  tmp = (strstr (title, "..."));
+  if (! tmp)
+    /* U+2026 HORIZONTAL ELLIPSIS */
+    tmp = strstr (title, "\342\200\246");
+
+  if (tmp && tmp == (title + strlen (title) - 3))
+    *tmp = '\0';
+
+  return title;
+}
+
+void
+script_fu_script_reset (SFScript *script,
+                        gboolean  reset_ids)
+{
+  gint i;
+
+  g_return_if_fail (script != NULL);
+
+  for (i = 0; i < script->n_args; i++)
+    {
+      SFArgValue *value         = &script->args[i].value;
+      SFArgValue *default_value = &script->args[i].default_value;
+
+      switch (script->args[i].type)
+        {
+        case SF_IMAGE:
+        case SF_DRAWABLE:
+        case SF_LAYER:
+        case SF_CHANNEL:
+        case SF_VECTORS:
+        case SF_DISPLAY:
+          if (reset_ids)
+            value->sfa_image = default_value->sfa_image;
+          break;
+
+        case SF_COLOR:
+          value->sfa_color = default_value->sfa_color;
+          break;
+
+        case SF_TOGGLE:
+          value->sfa_toggle = default_value->sfa_toggle;
+          break;
+
+        case SF_VALUE:
+        case SF_STRING:
+        case SF_TEXT:
+          g_free (value->sfa_value);
+          value->sfa_value = g_strdup (default_value->sfa_value);
+          break;
+
+        case SF_ADJUSTMENT:
+          value->sfa_adjustment.value = default_value->sfa_adjustment.value;
+          break;
+
+        case SF_FILENAME:
+        case SF_DIRNAME:
+          g_free (value->sfa_file.filename);
+          value->sfa_file.filename = g_strdup (default_value->sfa_file.filename);
+          break;
+
+        case SF_FONT:
+          g_free (value->sfa_font);
+          value->sfa_font = g_strdup (default_value->sfa_font);
+          break;
+
+        case SF_PALETTE:
+          g_free (value->sfa_palette);
+          value->sfa_palette = g_strdup (default_value->sfa_palette);
+          break;
+
+        case SF_PATTERN:
+          g_free (value->sfa_pattern);
+          value->sfa_pattern = g_strdup (default_value->sfa_pattern);
+          break;
+
+        case SF_GRADIENT:
+          g_free (value->sfa_gradient);
+          value->sfa_gradient = g_strdup (default_value->sfa_gradient);
+          break;
+
+        case SF_BRUSH:
+          g_free (value->sfa_brush.name);
+          value->sfa_brush.name = g_strdup (default_value->sfa_brush.name);
+          value->sfa_brush.opacity    = default_value->sfa_brush.opacity;
+          value->sfa_brush.spacing    = default_value->sfa_brush.spacing;
+          value->sfa_brush.paint_mode = default_value->sfa_brush.paint_mode;
+          break;
+
+        case SF_OPTION:
+          value->sfa_option.history = default_value->sfa_option.history;
+          break;
+
+        case SF_ENUM:
+          value->sfa_enum.history = default_value->sfa_enum.history;
+          break;
+        }
+    }
+}
+
+gint
+script_fu_script_collect_standard_args (SFScript        *script,
+                                        gint             n_params,
+                                        const GimpParam *params)
+{
+  gint params_consumed = 0;
+
+  g_return_val_if_fail (script != NULL, 0);
+
+  /*  the first parameter may be a DISPLAY id  */
+  if (script_fu_script_param_init (script,
+                                   n_params, params, SF_DISPLAY,
+                                   params_consumed))
+    {
+      params_consumed++;
+    }
+
+  /*  an IMAGE id may come first or after the DISPLAY id  */
+  if (script_fu_script_param_init (script,
+                                   n_params, params, SF_IMAGE,
+                                   params_consumed))
+    {
+      params_consumed++;
+
+      /*  and may be followed by a DRAWABLE, LAYER, CHANNEL or
+       *  VECTORS id
+       */
+      if (script_fu_script_param_init (script,
+                                       n_params, params, SF_DRAWABLE,
+                                       params_consumed) ||
+          script_fu_script_param_init (script,
+                                       n_params, params, SF_LAYER,
+                                       params_consumed) ||
+          script_fu_script_param_init (script,
+                                       n_params, params, SF_CHANNEL,
+                                       params_consumed) ||
+          script_fu_script_param_init (script,
+                                       n_params, params, SF_VECTORS,
+                                       params_consumed))
+        {
+          params_consumed++;
+        }
+    }
+
+  return params_consumed;
+}
+
+gchar *
+script_fu_script_get_command (SFScript *script)
+{
+  GString *s;
+  gint     i;
+
+  g_return_val_if_fail (script != NULL, NULL);
+
+  s = g_string_new ("(");
+  g_string_append (s, script->name);
+
+  for (i = 0; i < script->n_args; i++)
+    {
+      SFArgValue *arg_value = &script->args[i].value;
+
+      g_string_append_c (s, ' ');
+
+      switch (script->args[i].type)
+        {
+        case SF_IMAGE:
+        case SF_DRAWABLE:
+        case SF_LAYER:
+        case SF_CHANNEL:
+        case SF_VECTORS:
+        case SF_DISPLAY:
+          g_string_append_printf (s, "%d", arg_value->sfa_image);
+          break;
+
+        case SF_COLOR:
+          {
+            guchar r, g, b;
+
+            gimp_rgb_get_uchar (&arg_value->sfa_color, &r, &g, &b);
+            g_string_append_printf (s, "'(%d %d %d)",
+                                    (gint) r, (gint) g, (gint) b);
+          }
+          break;
+
+        case SF_TOGGLE:
+          g_string_append (s, arg_value->sfa_toggle ? "TRUE" : "FALSE");
+          break;
+
+        case SF_VALUE:
+          g_string_append (s, arg_value->sfa_value);
+          break;
+
+        case SF_STRING:
+        case SF_TEXT:
+          {
+            gchar *tmp;
+
+            tmp = script_fu_strescape (arg_value->sfa_value);
+            g_string_append_printf (s, "\"%s\"", tmp);
+            g_free (tmp);
+          }
+          break;
+
+        case SF_ADJUSTMENT:
+          {
+            gchar buffer[G_ASCII_DTOSTR_BUF_SIZE];
+
+            g_ascii_dtostr (buffer, sizeof (buffer),
+                            arg_value->sfa_adjustment.value);
+            g_string_append (s, buffer);
+          }
+          break;
+
+        case SF_FILENAME:
+        case SF_DIRNAME:
+          {
+            gchar *tmp;
+
+            tmp = script_fu_strescape (arg_value->sfa_file.filename);
+            g_string_append_printf (s, "\"%s\"", tmp);
+            g_free (tmp);
+          }
+          break;
+
+        case SF_FONT:
+          g_string_append_printf (s, "\"%s\"", arg_value->sfa_font);
+          break;
+
+        case SF_PALETTE:
+          g_string_append_printf (s, "\"%s\"", arg_value->sfa_palette);
+          break;
+
+        case SF_PATTERN:
+          g_string_append_printf (s, "\"%s\"", arg_value->sfa_pattern);
+          break;
+
+        case SF_GRADIENT:
+          g_string_append_printf (s, "\"%s\"", arg_value->sfa_gradient);
+          break;
+
+        case SF_BRUSH:
+          {
+            gchar buffer[G_ASCII_DTOSTR_BUF_SIZE];
+
+            g_ascii_dtostr (buffer, sizeof (buffer),
+                            arg_value->sfa_brush.opacity);
+            g_string_append_printf (s, "'(\"%s\" %s %d %d)",
+                                    arg_value->sfa_brush.name,
+                                    buffer,
+                                    arg_value->sfa_brush.spacing,
+                                    arg_value->sfa_brush.paint_mode);
+          }
+          break;
+
+        case SF_OPTION:
+          g_string_append_printf (s, "%d", arg_value->sfa_option.history);
+          break;
+
+        case SF_ENUM:
+          g_string_append_printf (s, "%d", arg_value->sfa_enum.history);
+          break;
+        }
+    }
+
+  g_string_append_c (s, ')');
+
+  return g_string_free (s, FALSE);
+}
+
+gchar *
+script_fu_script_get_command_from_params (SFScript        *script,
+                                          const GimpParam *params)
+{
+  GString *s;
+  gint     i;
+
+  g_return_val_if_fail (script != NULL, NULL);
+
+  s = g_string_new ("(");
+  g_string_append (s, script->name);
+
+  for (i = 0; i < script->n_args; i++)
+    {
+      const GimpParam *param = &params[i + 1];
+
+      g_string_append_c (s, ' ');
+
+      switch (script->args[i].type)
+        {
+        case SF_IMAGE:
+        case SF_DRAWABLE:
+        case SF_LAYER:
+        case SF_CHANNEL:
+        case SF_VECTORS:
+        case SF_DISPLAY:
+          g_string_append_printf (s, "%d", param->data.d_int32);
+          break;
+
+        case SF_COLOR:
+          {
+            guchar r, g, b;
+
+            gimp_rgb_get_uchar (&param->data.d_color, &r, &g, &b);
+            g_string_append_printf (s, "'(%d %d %d)",
+                                    (gint) r, (gint) g, (gint) b);
+          }
+          break;
+
+        case SF_TOGGLE:
+          g_string_append_printf (s, (param->data.d_int32 ? "TRUE" : "FALSE"));
+          break;
+
+        case SF_VALUE:
+          g_string_append (s, param->data.d_string);
+          break;
+
+        case SF_STRING:
+        case SF_TEXT:
+        case SF_FILENAME:
+        case SF_DIRNAME:
+          {
+            gchar *tmp;
+
+            tmp = script_fu_strescape (param->data.d_string);
+            g_string_append_printf (s, "\"%s\"", tmp);
+            g_free (tmp);
+          }
+          break;
+
+        case SF_ADJUSTMENT:
+          {
+            gchar buffer[G_ASCII_DTOSTR_BUF_SIZE];
+
+            g_ascii_dtostr (buffer, sizeof (buffer), param->data.d_float);
+            g_string_append (s, buffer);
+          }
+          break;
+
+        case SF_FONT:
+        case SF_PALETTE:
+        case SF_PATTERN:
+        case SF_GRADIENT:
+        case SF_BRUSH:
+          g_string_append_printf (s, "\"%s\"", param->data.d_string);
+          break;
+
+        case SF_OPTION:
+        case SF_ENUM:
+          g_string_append_printf (s, "%d", param->data.d_int32);
+          break;
+        }
+    }
+
+  g_string_append_c (s, ')');
+
+  return g_string_free (s, FALSE);
+}
+
+
+/*
+ *  Local Functions
+ */
+
+static gboolean
+script_fu_script_param_init (SFScript        *script,
+                             gint             nparams,
+                             const GimpParam *params,
+                             SFArgType        type,
+                             gint             n)
+{
+  SFArg *arg = &script->args[n];
+
+  if (script->n_args > n && arg->type == type && nparams > n + 1)
+    {
+      switch (type)
+        {
+        case SF_IMAGE:
+          if (params[n + 1].type == GIMP_PDB_IMAGE)
+            {
+              arg->value.sfa_image = params[n + 1].data.d_image;
+              return TRUE;
+            }
+          break;
+
+        case SF_DRAWABLE:
+          if (params[n + 1].type == GIMP_PDB_DRAWABLE)
+            {
+              arg->value.sfa_drawable = params[n + 1].data.d_drawable;
+              return TRUE;
+            }
+          break;
+
+        case SF_LAYER:
+          if (params[n + 1].type == GIMP_PDB_LAYER)
+            {
+              arg->value.sfa_layer = params[n + 1].data.d_layer;
+              return TRUE;
+            }
+          break;
+
+        case SF_CHANNEL:
+          if (params[n + 1].type == GIMP_PDB_CHANNEL)
+            {
+              arg->value.sfa_channel = params[n + 1].data.d_channel;
+              return TRUE;
+            }
+          break;
+
+        case SF_VECTORS:
+          if (params[n + 1].type == GIMP_PDB_VECTORS)
+            {
+              arg->value.sfa_vectors = params[n + 1].data.d_vectors;
+              return TRUE;
+            }
+          break;
+
+        case SF_DISPLAY:
+          if (params[n + 1].type == GIMP_PDB_DISPLAY)
+            {
+              arg->value.sfa_display = params[n + 1].data.d_display;
+              return TRUE;
+            }
+          break;
+
+        default:
+          break;
+        }
+    }
+
+  return FALSE;
+}
diff --git a/plug-ins/script-fu/script-fu-script.h b/plug-ins/script-fu/script-fu-script.h
new file mode 100644
index 0000000..86b318f
--- /dev/null
+++ b/plug-ins/script-fu/script-fu-script.h
@@ -0,0 +1,49 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef __SCRIPT_FU_SCRIPT_H__
+#define __SCRIPT_FU_SCRIPT_H__
+
+
+SFScript * script_fu_script_new                     (const gchar     *name,
+                                                     const gchar     *menu_label,
+                                                     const gchar     *blurb,
+                                                     const gchar     *author,
+                                                     const gchar     *copyright,
+                                                     const gchar     *date,
+                                                     const gchar     *image_types,
+                                                     gint             n_args);
+void       script_fu_script_free                    (SFScript        *script);
+
+void       script_fu_script_install_proc            (SFScript        *script,
+                                                     GimpRunProc      run_proc);
+void       script_fu_script_uninstall_proc          (SFScript        *script);
+
+gchar    * script_fu_script_get_title               (SFScript        *script);
+void       script_fu_script_reset                   (SFScript        *script,
+                                                     gboolean         reset_ids);
+
+gint       script_fu_script_collect_standard_args   (SFScript        *script,
+                                                     gint             n_params,
+                                                     const GimpParam *params);
+
+gchar    * script_fu_script_get_command             (SFScript        *script);
+gchar    * script_fu_script_get_command_from_params (SFScript        *script,
+                                                     const GimpParam *params);
+
+
+#endif /*  __SCRIPT_FU_SCRIPT__  */
diff --git a/plug-ins/script-fu/script-fu-scripts.c b/plug-ins/script-fu/script-fu-scripts.c
new file mode 100644
index 0000000..bf56edb
--- /dev/null
+++ b/plug-ins/script-fu/script-fu-scripts.c
@@ -0,0 +1,934 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <string.h>
+
+#include <glib.h>
+
+#ifdef G_OS_WIN32
+#define WIN32_LEAN_AND_MEAN
+#include <windows.h>
+#endif
+
+#include <libgimp/gimp.h>
+#include <libgimp/gimpui.h>
+
+#include "tinyscheme/scheme-private.h"
+
+#include "scheme-wrapper.h"
+
+#include "script-fu-types.h"
+
+#include "script-fu-interface.h"
+#include "script-fu-script.h"
+#include "script-fu-scripts.h"
+#include "script-fu-utils.h"
+
+#include "script-fu-intl.h"
+
+
+typedef struct
+{
+  SFScript *script;
+  gchar    *menu_path;
+} SFMenu;
+
+
+/*
+ *  Local Functions
+ */
+
+static gboolean  script_fu_run_command    (const gchar      *command,
+                                           GError          **error);
+static void      script_fu_load_directory (GFile            *directory);
+static void      script_fu_load_script    (GFile            *file);
+static gboolean  script_fu_install_script (gpointer          foo,
+                                           GList            *scripts,
+                                           gpointer          bar);
+static void      script_fu_install_menu   (SFMenu           *menu);
+static gboolean  script_fu_remove_script  (gpointer          foo,
+                                           GList            *scripts,
+                                           gpointer          bar);
+static void      script_fu_script_proc    (const gchar      *name,
+                                           gint              nparams,
+                                           const GimpParam  *params,
+                                           gint             *nreturn_vals,
+                                           GimpParam       **return_vals);
+
+static SFScript *script_fu_find_script    (const gchar      *name);
+
+static gchar *   script_fu_menu_map       (const gchar      *menu_path);
+static gint      script_fu_menu_compare   (gconstpointer     a,
+                                           gconstpointer     b);
+
+
+/*
+ *  Local variables
+ */
+
+static GTree *script_tree      = NULL;
+static GList *script_menu_list = NULL;
+
+
+/*
+ *  Function definitions
+ */
+
+void
+script_fu_find_scripts (GList *path)
+{
+  GList *list;
+
+  /*  Make sure to clear any existing scripts  */
+  if (script_tree != NULL)
+    {
+      g_tree_foreach (script_tree,
+                      (GTraverseFunc) script_fu_remove_script,
+                      NULL);
+      g_tree_destroy (script_tree);
+    }
+
+  if (! path)
+    return;
+
+  script_tree = g_tree_new ((GCompareFunc) g_utf8_collate);
+
+  for (list = path; list; list = g_list_next (list))
+    {
+      script_fu_load_directory (list->data);
+    }
+
+  /*  Now that all scripts are read in and sorted, tell gimp about them  */
+  g_tree_foreach (script_tree,
+                  (GTraverseFunc) script_fu_install_script,
+                  NULL);
+
+  script_menu_list = g_list_sort (script_menu_list,
+                                  (GCompareFunc) script_fu_menu_compare);
+
+  /*  Install and nuke the list of menu entries  */
+  g_list_free_full (script_menu_list,
+                    (GDestroyNotify) script_fu_install_menu);
+  script_menu_list = NULL;
+}
+
+pointer
+script_fu_add_script (scheme  *sc,
+                      pointer  a)
+{
+  SFScript    *script;
+  const gchar *name;
+  const gchar *menu_label;
+  const gchar *blurb;
+  const gchar *author;
+  const gchar *copyright;
+  const gchar *date;
+  const gchar *image_types;
+  gint         n_args;
+  gint         i;
+
+  /*  Check the length of a  */
+  if (sc->vptr->list_length (sc, a) < 7)
+    {
+      g_message (_("Too few arguments to 'script-fu-register' call"));
+      return sc->NIL;
+    }
+
+  /*  Find the script name  */
+  name = sc->vptr->string_value (sc->vptr->pair_car (a));
+  a = sc->vptr->pair_cdr (a);
+
+  /*  Find the script menu_label  */
+  menu_label = sc->vptr->string_value (sc->vptr->pair_car (a));
+  a = sc->vptr->pair_cdr (a);
+
+  /*  Find the script blurb  */
+  blurb = sc->vptr->string_value (sc->vptr->pair_car (a));
+  a = sc->vptr->pair_cdr (a);
+
+  /*  Find the script author  */
+  author = sc->vptr->string_value (sc->vptr->pair_car (a));
+  a = sc->vptr->pair_cdr (a);
+
+  /*  Find the script copyright  */
+  copyright = sc->vptr->string_value (sc->vptr->pair_car (a));
+  a = sc->vptr->pair_cdr (a);
+
+  /*  Find the script date  */
+  date = sc->vptr->string_value (sc->vptr->pair_car (a));
+  a = sc->vptr->pair_cdr (a);
+
+  /*  Find the script image types  */
+  if (sc->vptr->is_pair (a))
+    {
+      image_types = sc->vptr->string_value (sc->vptr->pair_car (a));
+      a = sc->vptr->pair_cdr (a);
+    }
+  else
+    {
+      image_types = sc->vptr->string_value (a);
+      a = sc->NIL;
+    }
+
+  /*  Check the supplied number of arguments  */
+  n_args = sc->vptr->list_length (sc, a) / 3;
+
+  /*  Create a new script  */
+  script = script_fu_script_new (name,
+                                 menu_label,
+                                 blurb,
+                                 author,
+                                 copyright,
+                                 date,
+                                 image_types,
+                                 n_args);
+
+  for (i = 0; i < script->n_args; i++)
+    {
+      SFArg *arg = &script->args[i];
+
+      if (a != sc->NIL)
+        {
+          if (!sc->vptr->is_integer (sc->vptr->pair_car (a)))
+            return foreign_error (sc, "script-fu-register: argument types must be integer values", 0);
+
+          arg->type = sc->vptr->ivalue (sc->vptr->pair_car (a));
+          a = sc->vptr->pair_cdr (a);
+        }
+      else
+        return foreign_error (sc, "script-fu-register: missing type specifier", 0);
+
+      if (a != sc->NIL)
+        {
+          if (!sc->vptr->is_string (sc->vptr->pair_car (a)))
+            return foreign_error (sc, "script-fu-register: argument labels must be strings", 0);
+
+          arg->label = g_strdup (sc->vptr->string_value (sc->vptr->pair_car (a)));
+          a = sc->vptr->pair_cdr (a);
+        }
+      else
+        return foreign_error (sc, "script-fu-register: missing arguments label", 0);
+
+      if (a != sc->NIL)
+        {
+          switch (arg->type)
+            {
+            case SF_IMAGE:
+            case SF_DRAWABLE:
+            case SF_LAYER:
+            case SF_CHANNEL:
+            case SF_VECTORS:
+            case SF_DISPLAY:
+              if (!sc->vptr->is_integer (sc->vptr->pair_car (a)))
+                return foreign_error (sc, "script-fu-register: default IDs must be integer values", 0);
+
+              arg->default_value.sfa_image =
+                sc->vptr->ivalue (sc->vptr->pair_car (a));
+              break;
+
+            case SF_COLOR:
+              if (sc->vptr->is_string (sc->vptr->pair_car (a)))
+                {
+                  if (! gimp_rgb_parse_css (&arg->default_value.sfa_color,
+                                            sc->vptr->string_value (sc->vptr->pair_car (a)),
+                                            -1))
+                    return foreign_error (sc, "script-fu-register: invalid default color name", 0);
+
+                  gimp_rgb_set_alpha (&arg->default_value.sfa_color, 1.0);
+                }
+              else if (sc->vptr->is_list (sc, sc->vptr->pair_car (a)) &&
+                       sc->vptr->list_length(sc, sc->vptr->pair_car (a)) == 3)
+                {
+                  pointer color_list;
+                  guchar  r, g, b;
+
+                  color_list = sc->vptr->pair_car (a);
+                  r = CLAMP (sc->vptr->ivalue (sc->vptr->pair_car (color_list)), 0, 255);
+                  color_list = sc->vptr->pair_cdr (color_list);
+                  g = CLAMP (sc->vptr->ivalue (sc->vptr->pair_car (color_list)), 0, 255);
+                  color_list = sc->vptr->pair_cdr (color_list);
+                  b = CLAMP (sc->vptr->ivalue (sc->vptr->pair_car (color_list)), 0, 255);
+
+                  gimp_rgb_set_uchar (&arg->default_value.sfa_color, r, g, b);
+                }
+              else
+                {
+                  return foreign_error (sc, "script-fu-register: color defaults must be a list of 3 integers or a color name", 0);
+                }
+              break;
+
+            case SF_TOGGLE:
+              if (!sc->vptr->is_integer (sc->vptr->pair_car (a)))
+                return foreign_error (sc, "script-fu-register: toggle default must be an integer value", 0);
+
+              arg->default_value.sfa_toggle =
+                (sc->vptr->ivalue (sc->vptr->pair_car (a))) ? TRUE : FALSE;
+              break;
+
+            case SF_VALUE:
+              if (!sc->vptr->is_string (sc->vptr->pair_car (a)))
+                return foreign_error (sc, "script-fu-register: value defaults must be string values", 0);
+
+              arg->default_value.sfa_value =
+                g_strdup (sc->vptr->string_value (sc->vptr->pair_car (a)));
+              break;
+
+            case SF_STRING:
+            case SF_TEXT:
+              if (!sc->vptr->is_string (sc->vptr->pair_car (a)))
+                return foreign_error (sc, "script-fu-register: string defaults must be string values", 0);
+
+              arg->default_value.sfa_value =
+                g_strdup (sc->vptr->string_value (sc->vptr->pair_car (a)));
+              break;
+
+            case SF_ADJUSTMENT:
+              {
+                pointer adj_list;
+
+                if (!sc->vptr->is_list (sc, a))
+                  return foreign_error (sc, "script-fu-register: adjustment defaults must be a list", 0);
+
+                adj_list = sc->vptr->pair_car (a);
+                arg->default_value.sfa_adjustment.value =
+                  sc->vptr->rvalue (sc->vptr->pair_car (adj_list));
+
+                adj_list = sc->vptr->pair_cdr (adj_list);
+                arg->default_value.sfa_adjustment.lower =
+                  sc->vptr->rvalue (sc->vptr->pair_car (adj_list));
+
+                adj_list = sc->vptr->pair_cdr (adj_list);
+                arg->default_value.sfa_adjustment.upper =
+                  sc->vptr->rvalue (sc->vptr->pair_car (adj_list));
+
+                adj_list = sc->vptr->pair_cdr (adj_list);
+                arg->default_value.sfa_adjustment.step =
+                  sc->vptr->rvalue (sc->vptr->pair_car (adj_list));
+
+                adj_list = sc->vptr->pair_cdr (adj_list);
+                arg->default_value.sfa_adjustment.page =
+                  sc->vptr->rvalue (sc->vptr->pair_car (adj_list));
+
+                adj_list = sc->vptr->pair_cdr (adj_list);
+                arg->default_value.sfa_adjustment.digits =
+                  sc->vptr->ivalue (sc->vptr->pair_car (adj_list));
+
+                adj_list = sc->vptr->pair_cdr (adj_list);
+                arg->default_value.sfa_adjustment.type =
+                  sc->vptr->ivalue (sc->vptr->pair_car (adj_list));
+              }
+              break;
+
+            case SF_FILENAME:
+              if (!sc->vptr->is_string (sc->vptr->pair_car (a)))
+                return foreign_error (sc, "script-fu-register: filename defaults must be string values", 0);
+              /* fallthrough */
+
+            case SF_DIRNAME:
+              if (!sc->vptr->is_string (sc->vptr->pair_car (a)))
+                return foreign_error (sc, "script-fu-register: dirname defaults must be string values", 0);
+
+              arg->default_value.sfa_file.filename =
+                g_strdup (sc->vptr->string_value (sc->vptr->pair_car (a)));
+
+#ifdef G_OS_WIN32
+              {
+                /* Replace POSIX slashes with Win32 backslashes. This
+                 * is just so script-fus can be written with only
+                 * POSIX directory separators.
+                 */
+                gchar *filename = arg->default_value.sfa_file.filename;
+
+                while (*filename)
+                  {
+                    if (*filename == '/')
+                      *filename = G_DIR_SEPARATOR;
+
+                    filename++;
+                  }
+              }
+#endif
+              break;
+
+            case SF_FONT:
+              if (!sc->vptr->is_string (sc->vptr->pair_car (a)))
+                return foreign_error (sc, "script-fu-register: font defaults must be string values", 0);
+
+              arg->default_value.sfa_font =
+                g_strdup (sc->vptr->string_value (sc->vptr->pair_car (a)));
+              break;
+
+            case SF_PALETTE:
+              if (!sc->vptr->is_string (sc->vptr->pair_car (a)))
+                return foreign_error (sc, "script-fu-register: palette defaults must be string values", 0);
+
+              arg->default_value.sfa_palette =
+                g_strdup (sc->vptr->string_value (sc->vptr->pair_car (a)));
+              break;
+
+            case SF_PATTERN:
+              if (!sc->vptr->is_string (sc->vptr->pair_car (a)))
+                return foreign_error (sc, "script-fu-register: pattern defaults must be string values", 0);
+
+              arg->default_value.sfa_pattern =
+                g_strdup (sc->vptr->string_value (sc->vptr->pair_car (a)));
+              break;
+
+            case SF_BRUSH:
+              {
+                pointer brush_list;
+
+                if (!sc->vptr->is_list (sc, a))
+                  return foreign_error (sc, "script-fu-register: brush defaults must be a list", 0);
+
+                brush_list = sc->vptr->pair_car (a);
+                arg->default_value.sfa_brush.name =
+                  g_strdup (sc->vptr->string_value (sc->vptr->pair_car (brush_list)));
+
+                brush_list = sc->vptr->pair_cdr (brush_list);
+                arg->default_value.sfa_brush.opacity =
+                  sc->vptr->rvalue (sc->vptr->pair_car (brush_list));
+
+                brush_list = sc->vptr->pair_cdr (brush_list);
+                arg->default_value.sfa_brush.spacing =
+                  sc->vptr->ivalue (sc->vptr->pair_car (brush_list));
+
+                brush_list = sc->vptr->pair_cdr (brush_list);
+                arg->default_value.sfa_brush.paint_mode =
+                  sc->vptr->ivalue (sc->vptr->pair_car (brush_list));
+              }
+              break;
+
+            case SF_GRADIENT:
+              if (!sc->vptr->is_string (sc->vptr->pair_car (a)))
+                return foreign_error (sc, "script-fu-register: gradient defaults must be string values", 0);
+
+              arg->default_value.sfa_gradient =
+                g_strdup (sc->vptr->string_value (sc->vptr->pair_car (a)));
+              break;
+
+            case SF_OPTION:
+              {
+                pointer option_list;
+
+                if (!sc->vptr->is_list (sc, a))
+                  return foreign_error (sc, "script-fu-register: option defaults must be a list", 0);
+
+                for (option_list = sc->vptr->pair_car (a);
+                     option_list != sc->NIL;
+                     option_list = sc->vptr->pair_cdr (option_list))
+                  {
+                    arg->default_value.sfa_option.list =
+                      g_slist_append (arg->default_value.sfa_option.list,
+                                      g_strdup (sc->vptr->string_value
+                                                (sc->vptr->pair_car (option_list))));
+                  }
+              }
+              break;
+
+            case SF_ENUM:
+              {
+                pointer      option_list;
+                const gchar *val;
+                gchar       *type_name;
+                GEnumValue  *enum_value;
+                GType        enum_type;
+
+                if (!sc->vptr->is_list (sc, a))
+                  return foreign_error (sc, "script-fu-register: enum defaults must be a list", 0);
+
+                option_list = sc->vptr->pair_car (a);
+                if (!sc->vptr->is_string (sc->vptr->pair_car (option_list)))
+                  return foreign_error (sc, "script-fu-register: first element in enum defaults must be a type-name", 0);
+
+                val = sc->vptr->string_value (sc->vptr->pair_car (option_list));
+
+                if (g_str_has_prefix (val, "Gimp"))
+                  type_name = g_strdup (val);
+                else
+                  type_name = g_strconcat ("Gimp", val, NULL);
+
+                enum_type = g_type_from_name (type_name);
+                if (! G_TYPE_IS_ENUM (enum_type))
+                  {
+                    g_free (type_name);
+                    return foreign_error (sc, "script-fu-register: first element in enum defaults must be the name of a registered type", 0);
+                  }
+
+                arg->default_value.sfa_enum.type_name = type_name;
+
+                option_list = sc->vptr->pair_cdr (option_list);
+                if (!sc->vptr->is_string (sc->vptr->pair_car (option_list)))
+                  return foreign_error (sc, "script-fu-register: second element in enum defaults must be a string", 0);
+
+                enum_value =
+                  g_enum_get_value_by_nick (g_type_class_peek (enum_type),
+                                            sc->vptr->string_value (sc->vptr->pair_car (option_list)));
+                if (enum_value)
+                  arg->default_value.sfa_enum.history = enum_value->value;
+              }
+              break;
+            }
+
+          a = sc->vptr->pair_cdr (a);
+        }
+      else
+        {
+          return foreign_error (sc, "script-fu-register: missing default argument", 0);
+        }
+    }
+
+  /*  fill all values from defaults  */
+  script_fu_script_reset (script, TRUE);
+
+  if (script->menu_label[0] == '<')
+    {
+      gchar *mapped = script_fu_menu_map (script->menu_label);
+
+      if (mapped)
+        {
+          g_free (script->menu_label);
+          script->menu_label = mapped;
+        }
+    }
+
+  {
+    GList *list = g_tree_lookup (script_tree, script->menu_label);
+
+    g_tree_insert (script_tree, (gpointer) script->menu_label,
+                    g_list_append (list, script));
+  }
+
+  return sc->NIL;
+}
+
+pointer
+script_fu_add_menu (scheme  *sc,
+                    pointer  a)
+{
+  SFScript    *script;
+  SFMenu      *menu;
+  const gchar *name;
+  const gchar *path;
+
+  /*  Check the length of a  */
+  if (sc->vptr->list_length (sc, a) != 2)
+    return foreign_error (sc, "Incorrect number of arguments for script-fu-menu-register", 0);
+
+  /*  Find the script PDB entry name  */
+  name = sc->vptr->string_value (sc->vptr->pair_car (a));
+  a = sc->vptr->pair_cdr (a);
+
+  script = script_fu_find_script (name);
+
+  if (! script)
+    {
+      g_message ("Procedure %s in script-fu-menu-register does not exist",
+                 name);
+      return sc->NIL;
+    }
+
+  /*  Create a new list of menus  */
+  menu = g_slice_new0 (SFMenu);
+
+  menu->script = script;
+
+  /*  Find the script menu path  */
+  path = sc->vptr->string_value (sc->vptr->pair_car (a));
+
+  menu->menu_path = script_fu_menu_map (path);
+
+  if (! menu->menu_path)
+    menu->menu_path = g_strdup (path);
+
+  script_menu_list = g_list_prepend (script_menu_list, menu);
+
+  return sc->NIL;
+}
+
+
+/*  private functions  */
+
+static gboolean
+script_fu_run_command (const gchar  *command,
+                       GError      **error)
+{
+  GString  *output;
+  gboolean  success = FALSE;
+
+  output = g_string_new (NULL);
+  ts_register_output_func (ts_gstring_output_func, output);
+
+  if (ts_interpret_string (command))
+    {
+      g_set_error (error, 0, 0, "%s", output->str);
+    }
+  else
+    {
+      success = TRUE;
+    }
+
+  g_string_free (output, TRUE);
+
+  return success;
+}
+
+static void
+script_fu_load_directory (GFile *directory)
+{
+  GFileEnumerator *enumerator;
+
+  enumerator = g_file_enumerate_children (directory,
+                                          G_FILE_ATTRIBUTE_STANDARD_NAME ","
+                                          G_FILE_ATTRIBUTE_STANDARD_IS_HIDDEN ","
+                                          G_FILE_ATTRIBUTE_STANDARD_TYPE,
+                                          G_FILE_QUERY_INFO_NONE,
+                                          NULL, NULL);
+
+  if (enumerator)
+    {
+      GFileInfo *info;
+
+      while ((info = g_file_enumerator_next_file (enumerator, NULL, NULL)))
+        {
+          GFileType file_type = g_file_info_get_file_type (info);
+
+          if ((file_type == G_FILE_TYPE_REGULAR ||
+               file_type == G_FILE_TYPE_DIRECTORY) &&
+              ! g_file_info_get_is_hidden (info))
+            {
+              GFile *child = g_file_enumerator_get_child (enumerator, info);
+
+              if (file_type == G_FILE_TYPE_DIRECTORY)
+                script_fu_load_directory (child);
+              else
+                script_fu_load_script (child);
+
+              g_object_unref (child);
+            }
+
+          g_object_unref (info);
+        }
+
+      g_object_unref (enumerator);
+    }
+}
+
+static void
+script_fu_load_script (GFile *file)
+{
+  if (gimp_file_has_extension (file, ".scm"))
+    {
+      gchar  *path    = g_file_get_path (file);
+      gchar  *escaped = script_fu_strescape (path);
+      gchar  *command;
+      GError *error   = NULL;
+
+      command = g_strdup_printf ("(load \"%s\")", escaped);
+      g_free (escaped);
+
+      if (! script_fu_run_command (command, &error))
+        {
+          gchar *message = g_strdup_printf (_("Error while loading %s:"),
+                                            gimp_file_get_utf8_name (file));
+
+          g_message ("%s\n\n%s", message, error->message);
+
+          g_clear_error (&error);
+          g_free (message);
+        }
+
+#ifdef G_OS_WIN32
+      /* No, I don't know why, but this is
+       * necessary on NT 4.0.
+       */
+      Sleep (0);
+#endif
+
+      g_free (command);
+      g_free (path);
+    }
+}
+
+/*
+ *  The following function is a GTraverseFunction.
+ */
+static gboolean
+script_fu_install_script (gpointer  foo G_GNUC_UNUSED,
+                          GList    *scripts,
+                          gpointer  bar G_GNUC_UNUSED)
+{
+  GList *list;
+
+  for (list = scripts; list; list = g_list_next (list))
+    {
+      SFScript *script = list->data;
+
+      script_fu_script_install_proc (script, script_fu_script_proc);
+    }
+
+  return FALSE;
+}
+
+static void
+script_fu_install_menu (SFMenu *menu)
+{
+  gimp_plugin_menu_register (menu->script->name, menu->menu_path);
+
+  g_free (menu->menu_path);
+  g_slice_free (SFMenu, menu);
+}
+
+/*
+ *  The following function is a GTraverseFunction.
+ */
+static gboolean
+script_fu_remove_script (gpointer  foo G_GNUC_UNUSED,
+                         GList    *scripts,
+                         gpointer  bar G_GNUC_UNUSED)
+{
+  GList *list;
+
+  for (list = scripts; list; list = g_list_next (list))
+    {
+      SFScript *script = list->data;
+
+      script_fu_script_uninstall_proc (script);
+      script_fu_script_free (script);
+    }
+
+  g_list_free (scripts);
+
+  return FALSE;
+}
+
+static void
+script_fu_script_proc (const gchar      *name,
+                       gint              nparams,
+                       const GimpParam  *params,
+                       gint             *nreturn_vals,
+                       GimpParam       **return_vals)
+{
+  static GimpParam   values[2] = { { 0, }, { 0, } };
+  GimpPDBStatusType  status    = GIMP_PDB_SUCCESS;
+  SFScript          *script;
+  GError            *error     = NULL;
+
+  if (values[1].type == GIMP_PDB_STRING && values[1].data.d_string)
+    {
+      g_free (values[1].data.d_string);
+      values[1].data.d_string = NULL;
+    }
+
+  *nreturn_vals = 1;
+  *return_vals  = values;
+
+  values[0].type = GIMP_PDB_STATUS;
+
+  script = script_fu_find_script (name);
+
+  if (! script)
+    status = GIMP_PDB_CALLING_ERROR;
+
+  if (status == GIMP_PDB_SUCCESS)
+    {
+      GimpRunMode run_mode = params[0].data.d_int32;
+
+      ts_set_run_mode (run_mode);
+
+      switch (run_mode)
+        {
+        case GIMP_RUN_INTERACTIVE:
+          {
+            gint min_args = 0;
+
+            /*  First, try to collect the standard script arguments...  */
+            min_args = script_fu_script_collect_standard_args (script,
+                                                               nparams, params);
+
+            /*  ...then acquire the rest of arguments (if any) with a dialog  */
+            if (script->n_args > min_args)
+              {
+                status = script_fu_interface (script, min_args);
+                break;
+              }
+            /*  otherwise (if the script takes no more arguments), skip
+             *  this part and run the script directly (fallthrough)
+             */
+          }
+
+        case GIMP_RUN_NONINTERACTIVE:
+          /*  Make sure all the arguments are there  */
+          if (nparams != (script->n_args + 1))
+            status = GIMP_PDB_CALLING_ERROR;
+
+          if (status == GIMP_PDB_SUCCESS)
+            {
+              gchar *command;
+
+              command = script_fu_script_get_command_from_params (script,
+                                                                  params);
+
+              /*  run the command through the interpreter  */
+              if (! script_fu_run_command (command, &error))
+                {
+                  status                  = GIMP_PDB_EXECUTION_ERROR;
+                  *nreturn_vals           = 2;
+                  values[1].type          = GIMP_PDB_STRING;
+                  values[1].data.d_string = error->message;
+
+                  error->message = NULL;
+                  g_error_free (error);
+                }
+
+              g_free (command);
+            }
+          break;
+
+        case GIMP_RUN_WITH_LAST_VALS:
+          {
+            gchar *command;
+
+            /*  First, try to collect the standard script arguments  */
+            script_fu_script_collect_standard_args (script, nparams, params);
+
+            command = script_fu_script_get_command (script);
+
+            /*  run the command through the interpreter  */
+            if (! script_fu_run_command (command, &error))
+              {
+                status                  = GIMP_PDB_EXECUTION_ERROR;
+                *nreturn_vals           = 2;
+                values[1].type          = GIMP_PDB_STRING;
+                values[1].data.d_string = error->message;
+
+                error->message = NULL;
+                g_error_free (error);
+              }
+
+            g_free (command);
+          }
+          break;
+
+        default:
+          break;
+        }
+    }
+
+  values[0].data.d_status = status;
+}
+
+/* this is a GTraverseFunction */
+static gboolean
+script_fu_lookup_script (gpointer      *foo G_GNUC_UNUSED,
+                         GList         *scripts,
+                         gconstpointer *name)
+{
+  GList *list;
+
+  for (list = scripts; list; list = g_list_next (list))
+    {
+      SFScript *script = list->data;
+
+      if (strcmp (script->name, *name) == 0)
+        {
+          /* store the script in the name pointer and stop the traversal */
+          *name = script;
+          return TRUE;
+        }
+    }
+
+  return FALSE;
+}
+
+static SFScript *
+script_fu_find_script (const gchar *name)
+{
+  gconstpointer script = name;
+
+  g_tree_foreach (script_tree,
+                  (GTraverseFunc) script_fu_lookup_script,
+                  &script);
+
+  if (script == name)
+    return NULL;
+
+  return (SFScript *) script;
+}
+
+static gchar *
+script_fu_menu_map (const gchar *menu_path)
+{
+  /*  for backward compatibility, we fiddle with some menu paths  */
+  const struct
+  {
+    const gchar *old;
+    const gchar *new;
+  } mapping[] = {
+    { "<Image>/Script-Fu/Alchemy",       "<Image>/Filters/Artistic"            },
+    { "<Image>/Script-Fu/Alpha to Logo", "<Image>/Filters/Alpha to Logo"       },
+    { "<Image>/Script-Fu/Animators",     "<Image>/Filters/Animation/Animators" },
+    { "<Image>/Script-Fu/Decor",         "<Image>/Filters/Decor"               },
+    { "<Image>/Script-Fu/Render",        "<Image>/Filters/Render"              },
+    { "<Image>/Script-Fu/Selection",     "<Image>/Select/Modify"               },
+    { "<Image>/Script-Fu/Shadow",        "<Image>/Filters/Light and Shadow/Shadow" },
+    { "<Image>/Script-Fu/Stencil Ops",   "<Image>/Filters/Decor"               }
+  };
+
+  gint i;
+
+  for (i = 0; i < G_N_ELEMENTS (mapping); i++)
+    {
+      if (g_str_has_prefix (menu_path, mapping[i].old))
+        {
+          const gchar *suffix = menu_path + strlen (mapping[i].old);
+
+          if (*suffix != '/')
+            continue;
+
+          return g_strconcat (mapping[i].new, suffix, NULL);
+        }
+    }
+
+  return NULL;
+}
+
+static gint
+script_fu_menu_compare (gconstpointer a,
+                        gconstpointer b)
+{
+  const SFMenu *menu_a = a;
+  const SFMenu *menu_b = b;
+  gint          retval = 0;
+
+  if (menu_a->menu_path && menu_b->menu_path)
+    {
+      retval = g_utf8_collate (menu_a->menu_path,
+                               menu_b->menu_path);
+
+      if (retval == 0 &&
+          menu_a->script->menu_label && menu_b->script->menu_label)
+        {
+          retval = g_utf8_collate (menu_a->script->menu_label,
+                                   menu_b->script->menu_label);
+        }
+    }
+
+  return retval;
+}
diff --git a/plug-ins/script-fu/script-fu-scripts.h b/plug-ins/script-fu/script-fu-scripts.h
new file mode 100644
index 0000000..ef63870
--- /dev/null
+++ b/plug-ins/script-fu/script-fu-scripts.h
@@ -0,0 +1,29 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef __SCRIPT_FU_SCRIPTS_H__
+#define __SCRIPT_FU_SCRIPTS_H__
+
+
+void      script_fu_find_scripts  (GList   *path);
+pointer   script_fu_add_script    (scheme  *sc,
+                                   pointer  a);
+pointer   script_fu_add_menu      (scheme  *sc,
+                                   pointer  a);
+
+
+#endif /*  __SCRIPT_FU_SCRIPTS__  */
diff --git a/plug-ins/script-fu/script-fu-server.c b/plug-ins/script-fu/script-fu-server.c
new file mode 100644
index 0000000..74270bf
--- /dev/null
+++ b/plug-ins/script-fu/script-fu-server.c
@@ -0,0 +1,1113 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <time.h>
+
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+#ifdef HAVE_SYS_TIME_H
+#include <sys/time.h>
+#endif
+
+#include <sys/types.h>
+
+#include <glib.h>
+
+#ifdef G_OS_WIN32
+#ifdef _WIN32_WINNT
+#undef _WIN32_WINNT
+#endif
+#define _WIN32_WINNT 0x0502
+#include <winsock2.h>
+#include <ws2tcpip.h>
+
+typedef short sa_family_t; /* Not defined by winsock */
+
+#ifndef AI_ADDRCONFIG
+/* Missing from mingw headers, but value is publicly documented
+ * on http://msdn.microsoft.com/en-us/library/ms737530%28v=VS.85%29.aspx
+ */
+#define AI_ADDRCONFIG 0x0400
+#endif
+#include <libgimpbase/gimpwin32-io.h>
+#else
+#include <sys/socket.h>
+#ifdef HAVE_SYS_SELECT_H
+#include <sys/select.h>
+#endif /* HAVE_SYS_SELECT_H */
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+
+#ifndef AI_ADDRCONFIG
+#define AI_ADDRCONFIG 0
+#endif
+#endif
+
+#include <glib/gstdio.h>
+
+#include "libgimp/gimp.h"
+#include "libgimp/gimpui.h"
+
+#include "script-fu-intl.h"
+
+#include "scheme-wrapper.h"
+#include "script-fu-server.h"
+
+#ifdef G_OS_WIN32
+#define CLOSESOCKET(fd) closesocket(fd)
+#else
+#define CLOSESOCKET(fd) close(fd)
+#endif
+
+#define COMMAND_HEADER  3
+#define RESPONSE_HEADER 4
+#define MAGIC           'G'
+
+#ifndef HAVE_DIFFTIME
+#define difftime(a,b) (((gdouble)(a)) - ((gdouble)(b)))
+#endif
+
+#ifndef NO_FD_SET
+#  define SELECT_MASK fd_set
+#else
+#  ifndef _AIX
+     typedef long fd_mask;
+#  endif
+#  if defined(_IBMR2)
+#    define SELECT_MASK void
+#  else
+#    define SELECT_MASK int
+#  endif
+#endif
+
+
+/*  image information  */
+
+/*  Header format for incoming commands...
+ *    bytes: 1          2          3
+ *           MAGIC      CMD_LEN_H  CMD_LEN_L
+ */
+
+/*  Header format for outgoing responses...
+ *    bytes: 1          2          3          4
+ *           MAGIC      ERROR?     RSP_LEN_H  RSP_LEN_L
+ */
+
+#define MAGIC_BYTE      0
+
+#define CMD_LEN_H_BYTE  1
+#define CMD_LEN_L_BYTE  2
+
+#define ERROR_BYTE      1
+#define RSP_LEN_H_BYTE  2
+#define RSP_LEN_L_BYTE  3
+
+/*
+ *  Local Types
+ */
+
+typedef struct
+{
+  gchar *command;
+  gint   filedes;
+  gint   request_no;
+} SFCommand;
+
+typedef struct
+{
+  GtkWidget *ip_entry;
+  GtkWidget *port_entry;
+  GtkWidget *log_entry;
+
+  gchar     *listen_ip;
+  gint       port;
+  gchar     *logfile;
+
+  gboolean   run;
+} ServerInterface;
+
+typedef union
+{
+  sa_family_t              family;
+  struct sockaddr_storage  ss;
+  struct sockaddr          sa;
+  struct sockaddr_in       sa_in;
+  struct sockaddr_in6      sa_in6;
+} sa_union;
+
+/*
+ *  Local Functions
+ */
+
+static void      server_start       (const gchar *listen_ip,
+                                     gint         port,
+                                     const gchar *logfile);
+static gboolean  execute_command    (SFCommand   *cmd);
+static gint      read_from_client   (gint         filedes);
+static gint      make_socket        (const struct addrinfo
+                                                 *ai);
+static void      server_log         (const gchar *format,
+                                     ...) G_GNUC_PRINTF (1, 2);
+static void      server_quit        (void);
+
+static gboolean  server_interface   (void);
+static void      response_callback  (GtkWidget   *widget,
+                                     gint         response_id,
+                                     gpointer     data);
+static void      print_socket_api_error (const gchar *api_name);
+
+/*
+ *  Local variables
+ */
+static gint         server_socks[2],
+                    server_socks_used = 0;
+static const gint   server_socks_len = sizeof (server_socks) /
+                                       sizeof (server_socks[0]);
+static GList       *command_queue   = NULL;
+static gint         queue_length    = 0;
+static gint         request_no      = 0;
+static FILE        *server_log_file = NULL;
+static GHashTable  *clients         = NULL;
+static gboolean     script_fu_done  = FALSE;
+static gboolean     server_mode     = FALSE;
+
+static ServerInterface sint =
+{
+  NULL,  /*  port entry widget    */
+  NULL,  /*  log entry widget     */
+  NULL,  /*  ip entry widget      */
+
+  NULL,  /*  ip to bind to        */
+  10008, /*  default port number  */
+  NULL,  /*  use stdout           */
+
+  FALSE  /*  run                  */
+};
+
+/*
+ *  Server interface functions
+ */
+
+void
+script_fu_server_quit (void)
+{
+  script_fu_done = TRUE;
+}
+
+gint
+script_fu_server_get_mode (void)
+{
+  return server_mode;
+}
+
+void
+script_fu_server_run (const gchar      *name,
+                      gint              nparams,
+                      const GimpParam  *params,
+                      gint             *nreturn_vals,
+                      GimpParam       **return_vals)
+{
+  static GimpParam   values[1];
+  GimpPDBStatusType  status = GIMP_PDB_SUCCESS;
+  GimpRunMode        run_mode;
+
+  run_mode = params[0].data.d_int32;
+
+  ts_set_run_mode (run_mode);
+  ts_set_print_flag (1);
+
+  switch (run_mode)
+    {
+    case GIMP_RUN_INTERACTIVE:
+      if (server_interface ())
+        {
+          server_mode = TRUE;
+
+          /*  Start the server  */
+          server_start (sint.listen_ip, sint.port, sint.logfile);
+        }
+      break;
+
+    case GIMP_RUN_NONINTERACTIVE:
+      /*  Set server_mode to TRUE  */
+      server_mode = TRUE;
+
+      /*  Start the server  */
+      server_start ((params[1].data.d_string &&
+                     strlen (params[1].data.d_string)) ?
+                    params[1].data.d_string : "127.0.0.1",
+                    params[2].data.d_int32,
+                    params[3].data.d_string);
+      break;
+
+    case GIMP_RUN_WITH_LAST_VALS:
+      status = GIMP_PDB_CALLING_ERROR;
+      g_warning ("Script-Fu server does not handle \"GIMP_RUN_WITH_LAST_VALS\"");
+
+    default:
+      break;
+    }
+
+  *nreturn_vals = 1;
+  *return_vals = values;
+
+  values[0].type = GIMP_PDB_STATUS;
+  values[0].data.d_status = status;
+}
+
+static void
+script_fu_server_add_fd (gpointer key,
+                         gpointer value,
+                         gpointer data)
+{
+  FD_SET (GPOINTER_TO_INT (key), (SELECT_MASK *) data);
+}
+
+static gboolean
+script_fu_server_read_fd (gpointer key,
+                          gpointer value,
+                          gpointer data)
+{
+  gint fd = GPOINTER_TO_INT (key);
+
+  if (FD_ISSET (fd, (SELECT_MASK *) data))
+    {
+      if (read_from_client (fd) < 0)
+        {
+          GList *list;
+
+          server_log ("Server: disconnect from host %s.\n", (gchar *) value);
+
+          CLOSESOCKET (fd);
+
+          /*  Invalidate the file descriptor for pending commands
+              from the disconnected client.  */
+          for (list = command_queue; list; list = list->next)
+            {
+              SFCommand *cmd = (SFCommand *) command_queue->data;
+
+              if (cmd->filedes == fd)
+                cmd->filedes = -1;
+            }
+
+          return TRUE;  /*  remove this client from the hash table  */
+        }
+    }
+
+  return FALSE;
+}
+
+void
+script_fu_server_listen (gint timeout)
+{
+  struct timeval  tv;
+  struct timeval *tvp = NULL;
+  SELECT_MASK     fds;
+  gint            sockno;
+
+  /*  Set time struct  */
+  if (timeout)
+    {
+      tv.tv_sec  = timeout / 1000;
+      tv.tv_usec = timeout % 1000;
+      tvp = &tv;
+    }
+
+  FD_ZERO (&fds);
+  for (sockno = 0; sockno < server_socks_used; sockno++)
+    {
+      FD_SET (server_socks[sockno], &fds);
+    }
+  g_hash_table_foreach (clients, script_fu_server_add_fd, &fds);
+
+  /* Block until input arrives on one or more active sockets
+     or timeout occurs. */
+
+  if (select (FD_SETSIZE, &fds, NULL, NULL, tvp) < 0)
+    {
+      print_socket_api_error ("select");
+      return;
+    }
+
+  /* Service the server sockets if any has input pending. */
+  for (sockno = 0; sockno < server_socks_used; sockno++)
+    {
+      sa_union                 client;
+      gchar                    clientname[NI_MAXHOST];
+
+      /* Connection request on original socket. */
+      socklen_t                size = sizeof (client);
+      gint                     new;
+      guint                    portno;
+
+      if (! FD_ISSET (server_socks[sockno], &fds))
+        {
+          continue;
+        }
+
+      new = accept (server_socks[sockno], &(client.sa), &size);
+
+      if (new < 0)
+        {
+          print_socket_api_error ("accept");
+          return;
+        }
+
+      /*  Associate the client address with the socket  */
+
+      /* If all else fails ... */
+      strncpy (clientname, "(error during host address lookup)", NI_MAXHOST-1);
+
+      /* Lookup address */
+      (void) getnameinfo (&(client.sa), size, clientname, sizeof (clientname),
+                          NULL, 0, NI_NUMERICHOST);
+
+      g_hash_table_insert (clients, GINT_TO_POINTER (new),
+                           g_strdup (clientname));
+
+      /* Determine port number */
+      switch (client.family)
+        {
+          case AF_INET:
+            portno = (guint) g_ntohs (client.sa_in.sin_port);
+            break;
+          case AF_INET6:
+            portno = (guint) g_ntohs (client.sa_in6.sin6_port);
+            break;
+          default:
+            portno = 0;
+        }
+
+      server_log ("Server: connect from host %s, port %d.\n",
+                  clientname, portno);
+    }
+
+  /* Service the client sockets. */
+  g_hash_table_foreach_remove (clients, script_fu_server_read_fd, &fds);
+}
+
+static void
+server_progress_start (const gchar *message,
+                       gboolean     cancelable,
+                       gpointer     user_data)
+{
+  /* do nothing */
+}
+
+static void
+server_progress_end (gpointer user_data)
+{
+  /* do nothing */
+}
+
+static void
+server_progress_set_text (const gchar *message,
+                          gpointer     user_data)
+{
+  /* do nothing */
+}
+
+static void
+server_progress_set_value (gdouble   percentage,
+                           gpointer  user_data)
+{
+  /* do nothing */
+}
+
+
+/*
+ * Suppress progress popups by installing progress handlers that do nothing.
+ */
+static const gchar *
+server_progress_install (void)
+{
+  GimpProgressVtable vtable = { 0, };
+
+  vtable.start     = server_progress_start;
+  vtable.end       = server_progress_end;
+  vtable.set_text  = server_progress_set_text;
+  vtable.set_value = server_progress_set_value;
+
+  return gimp_progress_install_vtable (&vtable, NULL);
+}
+
+static void
+server_progress_uninstall (const gchar *progress)
+{
+  gimp_progress_uninstall (progress);
+}
+
+static void
+server_start (const gchar *listen_ip,
+              gint         port,
+              const gchar *logfile)
+{
+  struct addrinfo *ai;
+  struct addrinfo *ai_curr;
+  struct addrinfo  hints;
+  gint             e;
+  gint             sockno;
+  gchar           *port_s;
+  const gchar     *progress;
+
+  memset (&hints, 0, sizeof (hints));
+  hints.ai_flags = AI_PASSIVE | AI_ADDRCONFIG;
+  hints.ai_socktype = SOCK_STREAM;
+
+  port_s = g_strdup_printf ("%d", port);
+  e = getaddrinfo (listen_ip, port_s, &hints, &ai);
+  g_free (port_s);
+
+  if (e != 0)
+    {
+      g_printerr ("getaddrinfo: %s\n", gai_strerror (e));
+      return;
+    }
+
+  for (ai_curr = ai, sockno = 0;
+       ai_curr != NULL && sockno < server_socks_len;
+       ai_curr = ai_curr->ai_next, sockno++)
+    {
+      /* Create the socket and set it up to accept connections.          */
+      /* This may fail if there's a server running on this port already. */
+      server_socks[sockno] = make_socket (ai_curr);
+
+      if (listen (server_socks[sockno], 5) < 0)
+        {
+          print_socket_api_error ("listen");
+          freeaddrinfo (ai);
+          return;
+        }
+    }
+
+  server_socks_used = sockno;
+
+  /*  Setup up the server log file  */
+  if (logfile && *logfile)
+    server_log_file = g_fopen (logfile, "a");
+  else
+    server_log_file = NULL;
+
+  if (! server_log_file)
+    server_log_file = stdout;
+
+  /*  Set up the clientname hash table  */
+  clients = g_hash_table_new_full (g_direct_hash, NULL,
+                                   NULL, (GDestroyNotify) g_free);
+
+  progress = server_progress_install ();
+
+  server_log ("Script-Fu server initialized and listening...\n");
+
+  /*  Loop until the server is finished  */
+  while (! script_fu_done)
+    {
+      script_fu_server_listen (0);
+
+      while (command_queue)
+        {
+          SFCommand *cmd = (SFCommand *) command_queue->data;
+
+          /*  Process the command  */
+          execute_command (cmd);
+
+          /*  Remove the command from the list  */
+          command_queue = g_list_remove (command_queue, cmd);
+          queue_length--;
+
+          /*  Free the request  */
+          g_free (cmd->command);
+          g_free (cmd);
+      }
+    }
+
+  server_progress_uninstall (progress);
+
+  freeaddrinfo (ai);
+  server_quit ();
+}
+
+static gboolean
+execute_command (SFCommand *cmd)
+{
+  guchar      buffer[RESPONSE_HEADER];
+  GString    *response;
+  time_t      clocknow;
+  gboolean    error;
+  gint        i;
+  gdouble     total_time;
+  GTimer     *timer;
+
+  server_log ("Processing request #%d\n", cmd->request_no);
+  timer = g_timer_new ();
+
+  response = g_string_new (NULL);
+  ts_register_output_func (ts_gstring_output_func, response);
+
+  /*  run the command  */
+  if (ts_interpret_string (cmd->command) != 0)
+    {
+      error = TRUE;
+
+      server_log ("%s\n", response->str);
+    }
+  else
+    {
+      error = FALSE;
+
+      if (response->len == 0)
+        g_string_assign (response, ts_get_success_msg ());
+
+      total_time = g_timer_elapsed (timer, NULL);
+      time (&clocknow);
+      server_log ("Request #%d processed in %.3f seconds, finishing on %s",
+                  cmd->request_no, total_time, ctime (&clocknow));
+    }
+  g_timer_destroy (timer);
+
+  buffer[MAGIC_BYTE]     = MAGIC;
+  buffer[ERROR_BYTE]     = error ? TRUE : FALSE;
+  buffer[RSP_LEN_H_BYTE] = (guchar) (response->len >> 8);
+  buffer[RSP_LEN_L_BYTE] = (guchar) (response->len & 0xFF);
+
+  /*  Write the response to the client  */
+  for (i = 0; i < RESPONSE_HEADER; i++)
+    if (cmd->filedes > 0 && send (cmd->filedes, (const void *) (buffer + i), 1, 0) < 0)
+      {
+        /*  Write error  */
+        print_socket_api_error ("send");
+        return FALSE;
+      }
+
+  for (i = 0; i < response->len; i++)
+    if (cmd->filedes > 0 && send (cmd->filedes, response->str + i, 1, 0) < 0)
+      {
+        /*  Write error  */
+        print_socket_api_error ("send");
+        return FALSE;
+      }
+
+  g_string_free (response, TRUE);
+
+  return FALSE;
+}
+
+static gint
+read_from_client (gint filedes)
+{
+  SFCommand *cmd;
+  guchar     buffer[COMMAND_HEADER];
+  gchar     *command;
+  gchar     *clientaddr;
+  time_t     clock;
+  gint       command_len;
+  gint       nbytes;
+  gint       i;
+
+  for (i = 0; i < COMMAND_HEADER;)
+    {
+      nbytes = recv (filedes, (void *) (buffer + i), COMMAND_HEADER - i, 0);
+
+      if (nbytes < 0)
+        {
+#ifndef G_OS_WIN32
+          if (errno == EINTR)
+            continue;
+#endif
+          server_log ("Error reading command header.\n");
+          return -1;
+        }
+
+      if (nbytes == 0)
+        return -1;  /* EOF */
+
+      i += nbytes;
+    }
+
+  if (buffer[MAGIC_BYTE] != MAGIC)
+    {
+      server_log ("Error in script-fu command transmission.\n");
+      return -1;
+    }
+
+  command_len = (buffer [CMD_LEN_H_BYTE] << 8) | buffer [CMD_LEN_L_BYTE];
+  command = g_new (gchar, command_len + 1);
+
+  for (i = 0; i < command_len;)
+    {
+      nbytes = recv (filedes, command + i, command_len - i, 0);
+
+      if (nbytes <= 0)
+        {
+#ifndef G_OS_WIN32
+          if (nbytes < 0 && errno == EINTR)
+            continue;
+#endif
+           server_log ("Error reading command.  Read %d out of %d bytes.\n",
+                       i, command_len);
+           g_free (command);
+           return -1;
+        }
+
+      i += nbytes;
+    }
+
+  command[command_len] = '\0';
+  cmd = g_new (SFCommand, 1);
+
+  cmd->filedes    = filedes;
+  cmd->command    = command;
+  cmd->request_no = request_no ++;
+
+  /*  Add the command to the queue  */
+  command_queue = g_list_append (command_queue, cmd);
+  queue_length ++;
+
+  /*  Get the client address from the address/socket table  */
+  clientaddr = g_hash_table_lookup (clients, GINT_TO_POINTER (cmd->filedes));
+  time (&clock);
+  server_log ("Received request #%d from IP address %s: %s on %s,"
+              "[Request queue length: %d]",
+              cmd->request_no,
+                  clientaddr ? clientaddr : "<invalid>",
+                      cmd->command, ctime (&clock), queue_length);
+
+  return 0;
+}
+
+static gint
+make_socket (const struct addrinfo *ai)
+{
+  gint                    sock;
+  gint                    v = 1;
+
+  /*  Win32 needs the winsock library initialized.  */
+#ifdef G_OS_WIN32
+  static gboolean    winsock_initialized = FALSE;
+
+  if (! winsock_initialized)
+    {
+      WORD    wVersionRequested = MAKEWORD (2, 2);
+      WSADATA wsaData;
+
+      if (WSAStartup (wVersionRequested, &wsaData) == 0)
+        {
+          winsock_initialized = TRUE;
+        }
+      else
+        {
+          print_socket_api_error ("WSAStartup");
+          gimp_quit ();
+        }
+    }
+#endif
+
+  /* Create the socket. */
+  sock = socket (ai->ai_family, ai->ai_socktype, ai->ai_protocol);
+  if (sock < 0)
+    {
+      print_socket_api_error ("socket");
+      gimp_quit ();
+    }
+
+  setsockopt (sock, SOL_SOCKET, SO_REUSEADDR, (const void *) &v, sizeof(v));
+
+#ifdef IPV6_V6ONLY
+  /* Only listen on IPv6 addresses, otherwise bind() will fail. */
+  if (ai->ai_family == AF_INET6)
+    {
+      v = 1;
+      if (setsockopt (sock, IPPROTO_IPV6, IPV6_V6ONLY, (const void *) &v, sizeof(v)) < 0)
+        {
+          print_socket_api_error ("setsockopt");
+          gimp_quit();
+        }
+    }
+#endif
+
+  if (bind (sock, ai->ai_addr, ai->ai_addrlen) < 0)
+    {
+      print_socket_api_error ("bind");
+      gimp_quit ();
+    }
+
+  return sock;
+}
+
+static void
+server_log (const gchar *format,
+            ...)
+{
+  va_list  args;
+  gchar   *buf;
+
+  va_start (args, format);
+  buf = g_strdup_vprintf (format, args);
+  va_end (args);
+
+  fputs (buf, server_log_file);
+  g_free (buf);
+
+  if (server_log_file != stdout)
+    fflush (server_log_file);
+}
+
+static void
+script_fu_server_shutdown_fd (gpointer key,
+                              gpointer value,
+                              gpointer data)
+{
+  shutdown (GPOINTER_TO_INT (key), 2);
+}
+
+static void
+server_quit (void)
+{
+  gint sockno;
+
+  for (sockno = 0; sockno < server_socks_used; sockno++)
+    {
+      CLOSESOCKET (server_socks[sockno]);
+    }
+
+  if (clients)
+    {
+      g_hash_table_foreach (clients, script_fu_server_shutdown_fd, NULL);
+      g_hash_table_destroy (clients);
+      clients = NULL;
+    }
+
+  while (command_queue)
+    {
+      SFCommand *cmd = command_queue->data;
+
+      g_free (cmd->command);
+      g_free (cmd);
+    }
+
+  g_list_free (command_queue);
+  command_queue = NULL;
+  queue_length  = 0;
+
+  /*  Close the server log file  */
+  if (server_log_file != stdout)
+    fclose (server_log_file);
+
+  server_log_file = NULL;
+}
+
+static gboolean
+server_interface (void)
+{
+  GtkWidget *dlg;
+  GtkWidget *main_vbox;
+  GtkWidget *table;
+  GtkWidget *hbox;
+  GtkWidget *image;
+  GtkWidget *label;
+
+  INIT_I18N();
+
+  gimp_ui_init ("script-fu", FALSE);
+
+  dlg = gimp_dialog_new (_("Script-Fu Server Options"), "gimp-script-fu",
+                         NULL, 0,
+                         gimp_standard_help_func, "plug-in-script-fu-server",
+
+                         _("_Cancel"),       GTK_RESPONSE_CANCEL,
+                         _("_Start Server"), GTK_RESPONSE_OK,
+
+                         NULL);
+
+  gtk_dialog_set_alternative_button_order (GTK_DIALOG (dlg),
+                                           GTK_RESPONSE_OK,
+                                           GTK_RESPONSE_CANCEL,
+                                           -1);
+
+  g_signal_connect (dlg, "response",
+                    G_CALLBACK (response_callback),
+                    NULL);
+  g_signal_connect (dlg, "destroy",
+                    G_CALLBACK (gtk_main_quit),
+                    NULL);
+
+  main_vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 12);
+  gtk_container_set_border_width (GTK_CONTAINER (main_vbox), 12);
+  gtk_box_pack_start (GTK_BOX (gtk_dialog_get_content_area (GTK_DIALOG (dlg))),
+                      main_vbox, TRUE, TRUE, 0);
+  gtk_widget_show (main_vbox);
+
+  /*  The table to hold port, logfile and listen-to entries  */
+  table = gtk_table_new (3, 2, FALSE);
+  gtk_table_set_col_spacings (GTK_TABLE (table), 6);
+  gtk_table_set_row_spacings (GTK_TABLE (table), 6);
+  gtk_box_pack_start (GTK_BOX (main_vbox), table, FALSE, FALSE, 0);
+  gtk_widget_show (table);
+
+  /* The server ip to listen to */
+  sint.ip_entry = gtk_entry_new ();
+  gtk_entry_set_text (GTK_ENTRY (sint.ip_entry), "127.0.0.1");
+  gimp_table_attach_aligned (GTK_TABLE (table), 0, 0,
+                             _("Listen on IP:"), 0.0, 0.5,
+                             sint.ip_entry, 1, FALSE);
+
+  /*  The server port  */
+  sint.port_entry = gtk_entry_new ();
+  gtk_entry_set_text (GTK_ENTRY (sint.port_entry), "10008");
+  gimp_table_attach_aligned (GTK_TABLE (table), 0, 1,
+                             _("Server port:"), 0.0, 0.5,
+                             sint.port_entry, 1, FALSE);
+
+  /*  The server logfile  */
+  sint.log_entry = gtk_entry_new ();
+  gimp_table_attach_aligned (GTK_TABLE (table), 0, 2,
+                             _("Server logfile:"), 0.0, 0.5,
+                             sint.log_entry, 1, FALSE);
+
+  /* Warning */
+  hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
+  gtk_box_pack_start (GTK_BOX (main_vbox), hbox, FALSE, FALSE, 0);
+  gtk_widget_show (hbox);
+
+  image = gtk_image_new_from_icon_name (GIMP_ICON_DIALOG_WARNING,
+                                        GTK_ICON_SIZE_DIALOG);
+  gtk_box_pack_start (GTK_BOX (hbox), image, TRUE, TRUE, 0);
+  gtk_widget_show (image);
+
+  label = gtk_label_new (_("Listening on an IP address other than "
+                           "127.0.0.1 (especially 0.0.0.0) can allow "
+                           "attackers to remotely execute arbitrary code "
+                           "on this machine."));
+  gtk_label_set_line_wrap (GTK_LABEL (label), TRUE);
+  gimp_label_set_attributes (GTK_LABEL (label),
+                             PANGO_ATTR_STYLE, PANGO_STYLE_ITALIC,
+                             -1);
+  gtk_box_pack_start (GTK_BOX (hbox), label, TRUE, TRUE, 0);
+  gtk_widget_show (label);
+
+  gtk_widget_show (dlg);
+
+  gtk_main ();
+
+  return sint.run;
+}
+
+static void
+response_callback (GtkWidget *widget,
+                   gint       response_id,
+                   gpointer   data)
+{
+  if (response_id == GTK_RESPONSE_OK)
+    {
+      g_free (sint.logfile);
+      g_free (sint.listen_ip);
+
+      sint.port      = atoi (gtk_entry_get_text (GTK_ENTRY (sint.port_entry)));
+      sint.logfile   = g_strdup (gtk_entry_get_text (GTK_ENTRY (sint.log_entry)));
+      sint.listen_ip = g_strdup (gtk_entry_get_text (GTK_ENTRY (sint.ip_entry)));
+      sint.run       = TRUE;
+    }
+
+  gtk_widget_destroy (widget);
+}
+
+static void
+print_socket_api_error (const gchar *api_name)
+{
+#ifdef G_OS_WIN32
+  /* Yes, this functionality really belongs to GLib. */
+  const gchar *emsg;
+  gchar unk[100];
+  int number = WSAGetLastError ();
+
+  switch (number)
+    {
+    case WSAEINTR:
+      emsg = "Interrupted function call";
+      break;
+    case WSAEACCES:
+      emsg = "Permission denied";
+      break;
+    case WSAEFAULT:
+      emsg = "Bad address";
+      break;
+    case WSAEINVAL:
+      emsg = "Invalid argument";
+      break;
+    case WSAEMFILE:
+      emsg = "Too many open sockets";
+      break;
+    case WSAEWOULDBLOCK:
+      emsg = "Resource temporarily unavailable";
+      break;
+    case WSAEINPROGRESS:
+      emsg = "Operation now in progress";
+      break;
+    case WSAEALREADY:
+      emsg = "Operation already in progress";
+      break;
+    case WSAENOTSOCK:
+      emsg = "Socket operation on nonsocket";
+      break;
+    case WSAEDESTADDRREQ:
+      emsg = "Destination address required";
+      break;
+    case WSAEMSGSIZE:
+      emsg = "Message too long";
+      break;
+    case WSAEPROTOTYPE:
+      emsg = "Protocol wrong type for socket";
+      break;
+    case WSAENOPROTOOPT:
+      emsg = "Bad protocol option";
+      break;
+    case WSAEPROTONOSUPPORT:
+      emsg = "Protocol not supported";
+      break;
+    case WSAESOCKTNOSUPPORT:
+      emsg = "Socket type not supported";
+      break;
+    case WSAEOPNOTSUPP:
+      emsg = "Operation not supported on transport endpoint";
+      break;
+    case WSAEPFNOSUPPORT:
+      emsg = "Protocol family not supported";
+      break;
+    case WSAEAFNOSUPPORT:
+      emsg = "Address family not supported by protocol family";
+      break;
+    case WSAEADDRINUSE:
+      emsg = "Address already in use";
+      break;
+    case WSAEADDRNOTAVAIL:
+      emsg = "Address not available";
+      break;
+    case WSAENETDOWN:
+      emsg = "Network interface is not configured";
+      break;
+    case WSAENETUNREACH:
+      emsg = "Network is unreachable";
+      break;
+    case WSAENETRESET:
+      emsg = "Network dropped connection on reset";
+      break;
+    case WSAECONNABORTED:
+      emsg = "Software caused connection abort";
+      break;
+    case WSAECONNRESET:
+      emsg = "Connection reset by peer";
+      break;
+    case WSAENOBUFS:
+      emsg = "No buffer space available";
+      break;
+    case WSAEISCONN:
+      emsg = "Socket is already connected";
+      break;
+    case WSAENOTCONN:
+      emsg = "Socket is not connected";
+      break;
+    case WSAESHUTDOWN:
+      emsg = "Can't send after socket shutdown";
+      break;
+    case WSAETIMEDOUT:
+      emsg = "Connection timed out";
+      break;
+    case WSAECONNREFUSED:
+      emsg = "Connection refused";
+      break;
+    case WSAEHOSTDOWN:
+      emsg = "Host is down";
+      break;
+    case WSAEHOSTUNREACH:
+      emsg = "Host is unreachable";
+      break;
+    case WSAEPROCLIM:
+      emsg = "Too many processes";
+      break;
+    case WSASYSNOTREADY:
+      emsg = "Network subsystem is unavailable";
+      break;
+    case WSAVERNOTSUPPORTED:
+      emsg = "Winsock.dll version out of range";
+      break;
+    case WSANOTINITIALISED:
+      emsg = "Successful WSAStartup not yet performed";
+      break;
+    case WSAEDISCON:
+      emsg = "Graceful shutdown in progress";
+      break;
+    case WSATYPE_NOT_FOUND:
+      emsg = "Class type not found";
+      break;
+    case WSAHOST_NOT_FOUND:
+      emsg = "Host not found";
+      break;
+    case WSATRY_AGAIN:
+      emsg = "Nonauthoritative host not found";
+      break;
+    case WSANO_RECOVERY:
+      emsg = "This is a nonrecoverable error";
+      break;
+    case WSANO_DATA:
+      emsg = "Valid name, no data record of requested type";
+      break;
+    case WSA_INVALID_HANDLE:
+      emsg = "Specified event object handle is invalid";
+      break;
+    case WSA_INVALID_PARAMETER:
+      emsg = "One or more parameters are invalid";
+      break;
+    case WSA_IO_INCOMPLETE:
+      emsg = "Overlapped I/O event object not in signaled state";
+      break;
+    case WSA_NOT_ENOUGH_MEMORY:
+      emsg = "Insufficient memory available";
+      break;
+    case WSA_OPERATION_ABORTED:
+      emsg = "Overlapped operation aborted";
+      break;
+    case WSAEINVALIDPROCTABLE:
+      emsg = "Invalid procedure table from service provider";
+      break;
+    case WSAEINVALIDPROVIDER:
+      emsg = "Invalid service provider version number";
+      break;
+    case WSAEPROVIDERFAILEDINIT:
+      emsg = "Unable to initialize a service provider";
+      break;
+    case WSASYSCALLFAILURE:
+      emsg = "System call failure";
+      break;
+    default:
+      sprintf (unk, "Unknown WinSock error %d", number);
+      emsg = unk;
+      break;
+    }
+
+  g_printerr ("%s failed: %s\n", api_name, emsg);
+#else
+  perror (api_name);
+#endif
+}
diff --git a/plug-ins/script-fu/script-fu-server.h b/plug-ins/script-fu/script-fu-server.h
new file mode 100644
index 0000000..96b88ee
--- /dev/null
+++ b/plug-ins/script-fu/script-fu-server.h
@@ -0,0 +1,32 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef __SCRIPT_FU_SERVER_H__
+#define __SCRIPT_FU_SERVER_H__
+
+
+void  script_fu_server_run      (const gchar      *name,
+				 gint              nparams,
+				 const GimpParam  *params,
+				 gint             *nreturn_vals,
+				 GimpParam       **return_vals);
+void  script_fu_server_listen   (gint              timeout);
+gint  script_fu_server_get_mode (void);
+void  script_fu_server_quit     (void);
+
+
+#endif /*  __SCRIPT_FU_SERVER__  */
diff --git a/plug-ins/script-fu/script-fu-text-console.c b/plug-ins/script-fu/script-fu-text-console.c
new file mode 100644
index 0000000..94c8d7c
--- /dev/null
+++ b/plug-ins/script-fu/script-fu-text-console.c
@@ -0,0 +1,60 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <stdio.h>
+#include <errno.h>
+
+#if HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+#include "libgimp/gimp.h"
+
+#include "scheme-wrapper.h"
+#include "script-fu-text-console.h"
+
+#include "script-fu-intl.h"
+
+void
+script_fu_text_console_run (const gchar      *name,
+                            gint              nparams,
+                            const GimpParam  *params,
+                            gint             *nreturn_vals,
+                            GimpParam       **return_vals)
+{
+  static GimpParam  values[1];
+
+  /*  Enable Script-Fu output  */
+  ts_register_output_func (ts_stdout_output_func, NULL);
+
+  ts_print_welcome ();
+
+  gimp_plugin_set_pdb_error_handler (GIMP_PDB_ERROR_HANDLER_PLUGIN);
+
+  /*  Run the interface  */
+  ts_interpret_stdin ();
+
+  gimp_plugin_set_pdb_error_handler (GIMP_PDB_ERROR_HANDLER_INTERNAL);
+
+  values[0].type          = GIMP_PDB_STATUS;
+  values[0].data.d_status = GIMP_PDB_SUCCESS;
+
+  *nreturn_vals = 1;
+  *return_vals  = values;
+}
diff --git a/plug-ins/script-fu/script-fu-text-console.h b/plug-ins/script-fu/script-fu-text-console.h
new file mode 100644
index 0000000..83c9860
--- /dev/null
+++ b/plug-ins/script-fu/script-fu-text-console.h
@@ -0,0 +1,29 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef __SCRIPT_FU_TEXT_CONSOLE_H__
+#define __SCRIPT_FU_TEXT_CONSOLE_H__
+
+
+void  script_fu_text_console_run (const gchar      *name,
+                                  gint              nparams,
+                                  const GimpParam  *params,
+                                  gint             *nreturn_vals,
+                                  GimpParam       **return_vals);
+
+
+#endif /*  __SCRIPT_FU_TEXT_CONSOLE_H__  */
diff --git a/plug-ins/script-fu/script-fu-types.h b/plug-ins/script-fu/script-fu-types.h
new file mode 100644
index 0000000..f0231b5
--- /dev/null
+++ b/plug-ins/script-fu/script-fu-types.h
@@ -0,0 +1,107 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef __SCRIPT_FU_TYPES_H__
+#define __SCRIPT_FU_TYPES_H__
+
+
+#include "script-fu-enums.h"
+
+
+typedef struct
+{
+  GtkAdjustment    *adj;
+  gdouble           value;
+  gdouble           lower;
+  gdouble           upper;
+  gdouble           step;
+  gdouble           page;
+  gint              digits;
+  SFAdjustmentType  type;
+} SFAdjustment;
+
+typedef struct
+{
+  gchar  *filename;
+} SFFilename;
+
+typedef struct
+{
+  gchar         *name;
+  gdouble        opacity;
+  gint           spacing;
+  GimpLayerMode  paint_mode;
+} SFBrush;
+
+typedef struct
+{
+  GSList *list;
+  gint    history;
+} SFOption;
+
+typedef struct
+{
+  gchar *type_name;
+  gint   history;
+} SFEnum;
+
+typedef union
+{
+  gint32         sfa_image;
+  gint32         sfa_drawable;
+  gint32         sfa_layer;
+  gint32         sfa_channel;
+  gint32         sfa_vectors;
+  gint32         sfa_display;
+  GimpRGB        sfa_color;
+  gint32         sfa_toggle;
+  gchar         *sfa_value;
+  SFAdjustment   sfa_adjustment;
+  SFFilename     sfa_file;
+  gchar         *sfa_font;
+  gchar         *sfa_gradient;
+  gchar         *sfa_palette;
+  gchar         *sfa_pattern;
+  SFBrush        sfa_brush;
+  SFOption       sfa_option;
+  SFEnum         sfa_enum;
+} SFArgValue;
+
+typedef struct
+{
+  SFArgType   type;
+  gchar      *label;
+  SFArgValue  default_value;
+  SFArgValue  value;
+} SFArg;
+
+typedef struct
+{
+  gchar        *name;
+  gchar        *menu_label;
+  gchar        *blurb;
+  gchar        *author;
+  gchar        *copyright;
+  gchar        *date;
+  gchar        *image_types;
+
+  gint          n_args;
+  SFArg        *args;
+} SFScript;
+
+
+#endif /*  __SCRIPT_FU_TYPES__  */
diff --git a/plug-ins/script-fu/script-fu-utils.c b/plug-ins/script-fu/script-fu-utils.c
new file mode 100644
index 0000000..3e068cc
--- /dev/null
+++ b/plug-ins/script-fu/script-fu-utils.c
@@ -0,0 +1,69 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <string.h>
+
+#include <glib.h>
+
+#include "script-fu-utils.h"
+
+
+/*
+ * Escapes the special characters '\b', '\f', '\n', '\r', '\t', '\' and '"'
+ * in the string source by inserting a '\' before them.
+ */
+gchar *
+script_fu_strescape (const gchar *source)
+{
+  const guchar *p;
+  gchar        *dest;
+  gchar        *q;
+
+  g_return_val_if_fail (source != NULL, NULL);
+
+  p = (const guchar *) source;
+
+  /* Each source byte needs maximally two destination chars */
+  q = dest = g_malloc (strlen (source) * 2 + 1);
+
+  while (*p)
+    {
+      switch (*p)
+        {
+        case '\b':
+        case '\f':
+        case '\n':
+        case '\r':
+        case '\t':
+        case '\\':
+        case '"':
+          *q++ = '\\';
+          /* fallthrough */
+        default:
+          *q++ = *p;
+          break;
+        }
+
+      p++;
+    }
+
+  *q = 0;
+
+  return dest;
+}
diff --git a/plug-ins/script-fu/script-fu-utils.h b/plug-ins/script-fu/script-fu-utils.h
new file mode 100644
index 0000000..a62a226
--- /dev/null
+++ b/plug-ins/script-fu/script-fu-utils.h
@@ -0,0 +1,25 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef __SCRIPT_FU_UTILS_H__
+#define __SCRIPT_FU_UTILS_H__
+
+
+gchar * script_fu_strescape (const gchar *source);
+
+
+#endif /*  __SCRIPT_FU_UTILS__  */
diff --git a/plug-ins/script-fu/script-fu.c b/plug-ins/script-fu/script-fu.c
new file mode 100644
index 0000000..558e15a
--- /dev/null
+++ b/plug-ins/script-fu/script-fu.c
@@ -0,0 +1,385 @@
+/* GIMP - The GNU Image Manipulation Program
+ * Copyright (C) 1995 Spencer Kimball and Peter Mattis
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include "config.h"
+
+#include <string.h>
+
+#include <libgimp/gimp.h>
+#include <libgimp/gimpui.h>
+
+#include "tinyscheme/scheme.h"
+
+#include "script-fu-types.h"
+
+#include "script-fu-console.h"
+#include "script-fu-eval.h"
+#include "script-fu-interface.h"
+#include "script-fu-scripts.h"
+#include "script-fu-server.h"
+#include "script-fu-text-console.h"
+
+#include "scheme-wrapper.h"
+
+#include "script-fu-intl.h"
+
+
+/* Declare local functions. */
+
+static void    script_fu_query          (void);
+static void    script_fu_run            (const gchar      *name,
+                                         gint              nparams,
+                                         const GimpParam  *params,
+                                         gint             *nreturn_vals,
+                                         GimpParam       **return_vals);
+static GList * script_fu_search_path    (void);
+static void    script_fu_extension_init (void);
+static void    script_fu_refresh_proc   (const gchar      *name,
+                                         gint              nparams,
+                                         const GimpParam  *params,
+                                         gint             *nreturn_vals,
+                                         GimpParam       **return_vals);
+
+
+const GimpPlugInInfo PLUG_IN_INFO =
+{
+  NULL,             /* init_proc  */
+  NULL,             /* quit_proc  */
+  script_fu_query,  /* query_proc */
+  script_fu_run     /* run_proc   */
+};
+
+
+MAIN ()
+
+
+static void
+script_fu_query (void)
+{
+  static const GimpParamDef console_args[] =
+  {
+    { GIMP_PDB_INT32,  "run-mode", "The run mode { RUN-INTERACTIVE (0) }" }
+  };
+
+  static const GimpParamDef textconsole_args[] =
+  {
+    { GIMP_PDB_INT32,  "run-mode", "The run mode { RUN-INTERACTIVE (0) }" }
+  };
+
+  static const GimpParamDef eval_args[] =
+  {
+    { GIMP_PDB_INT32,  "run-mode", "The run mode { RUN-NONINTERACTIVE (1) }" },
+    { GIMP_PDB_STRING, "code",     "The code to evaluate"                    }
+  };
+
+  static const GimpParamDef server_args[] =
+  {
+    { GIMP_PDB_INT32,  "run-mode", "The run mode { RUN-NONINTERACTIVE (1) }"  },
+    { GIMP_PDB_STRING, "ip",       "The ip on which to listen for requests"   },
+    { GIMP_PDB_INT32,  "port",     "The port on which to listen for requests" },
+    { GIMP_PDB_STRING, "logfile",  "The file to log server activity to"       }
+  };
+
+  gimp_plugin_domain_register (GETTEXT_PACKAGE "-script-fu", NULL);
+
+  gimp_install_procedure ("extension-script-fu",
+                          "A scheme interpreter for scripting GIMP operations",
+                          "More help here later",
+                          "Spencer Kimball & Peter Mattis",
+                          "Spencer Kimball & Peter Mattis",
+                          "1997",
+                          NULL,
+                          NULL,
+                          GIMP_EXTENSION,
+                          0, 0, NULL, NULL);
+
+  gimp_install_procedure ("plug-in-script-fu-console",
+                          N_("Interactive console for Script-Fu development"),
+                          "Provides an interface which allows interactive "
+                                      "scheme development.",
+                          "Spencer Kimball & Peter Mattis",
+                          "Spencer Kimball & Peter Mattis",
+                          "1997",
+                          N_("_Console"),
+                          NULL,
+                          GIMP_PLUGIN,
+                          G_N_ELEMENTS (console_args), 0,
+                          console_args, NULL);
+
+  gimp_plugin_menu_register ("plug-in-script-fu-console",
+                             "<Image>/Filters/Languages/Script-Fu");
+
+  gimp_install_procedure ("plug-in-script-fu-text-console",
+                          "Provides a text console mode for script-fu "
+                          "development",
+                          "Provides an interface which allows interactive "
+                          "scheme development.",
+                          "Spencer Kimball & Peter Mattis",
+                          "Spencer Kimball & Peter Mattis",
+                          "1997",
+                          NULL,
+                          NULL,
+                          GIMP_PLUGIN,
+                          G_N_ELEMENTS (textconsole_args), 0,
+                          textconsole_args, NULL);
+
+  gimp_install_procedure ("plug-in-script-fu-server",
+                          N_("Server for remote Script-Fu operation"),
+                          "Provides a server for remote script-fu operation. "
+                          "NOTE that for security reasons this procedure's "
+                          "API was changed in an incompatible way since "
+                          "GIMP 2.8.12. You now have to pass the IP to listen "
+                          "on as first parameter. Calling this procedure with "
+                          "the old API will fail on purpose.",
+                          "Spencer Kimball & Peter Mattis",
+                          "Spencer Kimball & Peter Mattis",
+                          "1997",
+                          N_("_Start Server..."),
+                          NULL,
+                          GIMP_PLUGIN,
+                          G_N_ELEMENTS (server_args), 0,
+                          server_args, NULL);
+
+  gimp_plugin_menu_register ("plug-in-script-fu-server",
+                             "<Image>/Filters/Languages/Script-Fu");
+
+  gimp_install_procedure ("plug-in-script-fu-eval",
+                          "Evaluate scheme code",
+                          "Evaluate the code under the scheme interpreter "
+                                      "(primarily for batch mode)",
+                          "Manish Singh",
+                          "Manish Singh",
+                          "1998",
+                          NULL,
+                          NULL,
+                          GIMP_PLUGIN,
+                          G_N_ELEMENTS (eval_args), 0,
+                          eval_args, NULL);
+}
+
+static void
+script_fu_run (const gchar      *name,
+               gint              nparams,
+               const GimpParam  *param,
+               gint             *nreturn_vals,
+               GimpParam       **return_vals)
+{
+  GList *path;
+
+  INIT_I18N();
+
+  path = script_fu_search_path ();
+
+  /*  Determine before we allow scripts to register themselves
+   *   whether this is the base, automatically installed script-fu extension
+   */
+  if (strcmp (name, "extension-script-fu") == 0)
+    {
+      /*  Setup auxiliary temporary procedures for the base extension  */
+      script_fu_extension_init ();
+
+      /*  Init the interpreter and register scripts */
+      tinyscheme_init (path, TRUE);
+    }
+  else
+    {
+      /*  Init the interpreter  */
+      tinyscheme_init (path, FALSE);
+    }
+
+  if (param != NULL)
+    ts_set_run_mode ((GimpRunMode) param[0].data.d_int32);
+
+  /*  Load all of the available scripts  */
+  script_fu_find_scripts (path);
+
+  g_list_free_full (path, (GDestroyNotify) g_object_unref);
+
+  if (strcmp (name, "extension-script-fu") == 0)
+    {
+      /*
+       *  The main script-fu extension.
+       */
+
+      static GimpParam  values[1];
+
+      /*  Acknowledge that the extension is properly initialized  */
+      gimp_extension_ack ();
+
+      /*  Go into an endless loop  */
+      while (TRUE)
+        gimp_extension_process (0);
+
+      /*  Set return values; pointless because we never get out of the loop  */
+      *nreturn_vals = 1;
+      *return_vals  = values;
+
+      values[0].type          = GIMP_PDB_STATUS;
+      values[0].data.d_status = GIMP_PDB_SUCCESS;
+    }
+  else if (strcmp (name, "plug-in-script-fu-text-console") == 0)
+    {
+      /*
+       *  The script-fu text console for interactive Scheme development
+       */
+
+      script_fu_text_console_run (name, nparams, param,
+                                  nreturn_vals, return_vals);
+    }
+  else if (strcmp (name, "plug-in-script-fu-console") == 0)
+    {
+      /*
+       *  The script-fu console for interactive Scheme development
+       */
+
+      script_fu_console_run (name, nparams, param,
+                             nreturn_vals, return_vals);
+    }
+  else if (strcmp (name, "plug-in-script-fu-server") == 0)
+    {
+      /*
+       *  The script-fu server for remote operation
+       */
+
+      script_fu_server_run (name, nparams, param,
+                            nreturn_vals, return_vals);
+    }
+  else if (strcmp (name, "plug-in-script-fu-eval") == 0)
+    {
+      /*
+       *  A non-interactive "console" (for batch mode)
+       */
+
+      script_fu_eval_run (name, nparams, param,
+                          nreturn_vals, return_vals);
+    }
+}
+
+static GList *
+script_fu_search_path (void)
+{
+  gchar *path_str;
+  GList *path  = NULL;
+
+  path_str = gimp_gimprc_query ("script-fu-path");
+
+  if (path_str)
+    {
+      GError *error = NULL;
+
+      path = gimp_config_path_expand_to_files (path_str, &error);
+      g_free (path_str);
+
+      if (! path)
+        {
+          g_warning ("Can't convert script-fu-path to filesystem encoding: %s",
+                     error->message);
+          g_clear_error (&error);
+        }
+    }
+
+  return path;
+}
+
+static void
+script_fu_extension_init (void)
+{
+  static const GimpParamDef args[] =
+  {
+    { GIMP_PDB_INT32, "run-mode", "[Interactive], non-interactive" }
+  };
+
+  gimp_plugin_menu_branch_register ("<Image>/Help", N_("_GIMP Online"));
+  gimp_plugin_menu_branch_register ("<Image>/Help", N_("_User Manual"));
+
+  gimp_plugin_menu_branch_register ("<Image>/Filters/Languages",
+                                    N_("_Script-Fu"));
+  gimp_plugin_menu_branch_register ("<Image>/Filters/Languages/Script-Fu",
+                                    N_("_Test"));
+
+  gimp_plugin_menu_branch_register ("<Image>/File/Create",
+                                    N_("_Buttons"));
+  gimp_plugin_menu_branch_register ("<Image>/File/Create",
+                                    N_("_Logos"));
+  gimp_plugin_menu_branch_register ("<Image>/File/Create",
+                                    N_("_Patterns"));
+
+  gimp_plugin_menu_branch_register ("<Image>/File/Create",
+                                    N_("_Web Page Themes"));
+  gimp_plugin_menu_branch_register ("<Image>/File/Create/Web Page Themes",
+                                    N_("_Alien Glow"));
+  gimp_plugin_menu_branch_register ("<Image>/File/Create/Web Page Themes",
+                                    N_("_Beveled Pattern"));
+  gimp_plugin_menu_branch_register ("<Image>/File/Create/Web Page Themes",
+                                    N_("_Classic.Gimp.Org"));
+
+  gimp_plugin_menu_branch_register ("<Image>/Filters",
+                                    N_("Alpha to _Logo"));
+
+  gimp_install_temp_proc ("script-fu-refresh",
+                          N_("Re-read all available Script-Fu scripts"),
+                          "Re-read all available Script-Fu scripts",
+                          "Spencer Kimball & Peter Mattis",
+                          "Spencer Kimball & Peter Mattis",
+                          "1997",
+                          N_("_Refresh Scripts"),
+                          NULL,
+                          GIMP_TEMPORARY,
+                          G_N_ELEMENTS (args), 0,
+                          args, NULL,
+                          script_fu_refresh_proc);
+
+  gimp_plugin_menu_register ("script-fu-refresh",
+                             "<Image>/Filters/Languages/Script-Fu");
+}
+
+static void
+script_fu_refresh_proc (const gchar      *name,
+                        gint              nparams,
+                        const GimpParam  *params,
+                        gint             *nreturn_vals,
+                        GimpParam       **return_vals)
+{
+  static GimpParam  values[1];
+  GimpPDBStatusType status;
+
+  if (script_fu_interface_is_active ())
+    {
+      g_message (_("You can not use \"Refresh Scripts\" while a "
+                   "Script-Fu dialog box is open.  Please close "
+                   "all Script-Fu windows and try again."));
+
+      status = GIMP_PDB_EXECUTION_ERROR;
+    }
+  else
+    {
+      /*  Reload all of the available scripts  */
+      GList *path = script_fu_search_path ();
+
+      script_fu_find_scripts (path);
+
+      g_list_free_full (path, (GDestroyNotify) g_object_unref);
+
+      status = GIMP_PDB_SUCCESS;
+    }
+
+  *nreturn_vals = 1;
+  *return_vals  = values;
+
+  values[0].type          = GIMP_PDB_STATUS;
+  values[0].data.d_status = status;
+}
diff --git a/plug-ins/script-fu/scripts/Makefile.am b/plug-ins/script-fu/scripts/Makefile.am
new file mode 100644
index 0000000..4cce60d
--- /dev/null
+++ b/plug-ins/script-fu/scripts/Makefile.am
@@ -0,0 +1,70 @@
+## Process this file with automake to produce Makefile.in
+
+SUBDIRS = images
+
+scriptdatadir = $(gimpdatadir)/scripts
+
+scripts = \
+	script-fu.init			\
+	script-fu-compat.init		\
+	plug-in-compat.init		\
+	add-bevel.scm			\
+	addborder.scm			\
+	blend-anim.scm			\
+	burn-in-anim.scm		\
+	carve-it.scm			\
+	chrome-it.scm			\
+	circuit.scm			\
+	clothify.scm			\
+	coffee.scm			\
+	copy-visible.scm		\
+	difference-clouds.scm		\
+	distress-selection.scm		\
+	drop-shadow.scm			\
+	erase-rows.scm			\
+	font-map.scm			\
+	fuzzyborder.scm			\
+	gimp-online.scm			\
+	gradient-example.scm		\
+	grid-system.scm			\
+	guides-from-selection.scm	\
+	guides-new.scm			\
+	guides-new-percent.scm		\
+	guides-remove-all.scm		\
+	lava.scm			\
+	line-nova.scm			\
+	mkbrush.scm			\
+	old-photo.scm			\
+	palette-export.scm		\
+	paste-as-brush.scm		\
+	paste-as-pattern.scm		\
+	perspective-shadow.scm		\
+	predator.scm			\
+	reverse-layers.scm		\
+	ripply-anim.scm			\
+	round-corners.scm \
+	script-fu-set-cmap.scm		\
+	script-fu-util.scm		\
+	select-to-brush.scm		\
+	select-to-image.scm		\
+	select-to-pattern.scm		\
+	selection-round.scm		\
+	slide.scm			\
+	spinning-globe.scm		\
+	spyrogimp.scm			\
+	tileblur.scm			\
+	unsharp-mask.scm		\
+	waves-anim.scm			\
+	weave.scm			\
+	xach-effect.scm
+
+test_scripts = \
+	contactsheet.scm		\
+	test-sphere.scm			\
+	ts-helloworld.scm
+
+
+scriptdata_DATA = $(scripts)
+
+
+EXTRA_DIST = $(scripts) $(test_scripts)
diff --git a/plug-ins/script-fu/scripts/Makefile.in b/plug-ins/script-fu/scripts/Makefile.in
new file mode 100644
index 0000000..e4554bf
--- /dev/null
+++ b/plug-ins/script-fu/scripts/Makefile.in
@@ -0,0 +1,1044 @@
+# Makefile.in generated by automake 1.16.3 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2020 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
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+
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+        dir0=`echo "$$dir0" | sed -e "$$sed_butlast"`; \
+      else \
+        first2=`echo "$$dir2" | sed -e "$$sed_first"`; \
+        if test "$$first2" = "$$first"; then \
+          dir2=`echo "$$dir2" | sed -e "$$sed_rest"`; \
+        else \
+          dir2="../$$dir2"; \
+        fi; \
+        dir0="$$dir0"/"$$first"; \
+      fi; \
+    fi; \
+    dir1=`echo "$$dir1" | sed -e "$$sed_rest"`; \
+  done; \
+  reldir="$$dir2"
+AA_LIBS = @AA_LIBS@
+ACLOCAL = @ACLOCAL@
+ALLOCA = @ALLOCA@
+ALL_LINGUAS = @ALL_LINGUAS@
+ALSA_CFLAGS = @ALSA_CFLAGS@
+ALSA_LIBS = @ALSA_LIBS@
+ALTIVEC_EXTRA_CFLAGS = @ALTIVEC_EXTRA_CFLAGS@
+AMTAR = @AMTAR@
+AM_DEFAULT_VERBOSITY = @AM_DEFAULT_VERBOSITY@
+APPSTREAM_UTIL = @APPSTREAM_UTIL@
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+ATK_REQUIRED_VERSION = @ATK_REQUIRED_VERSION@
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+AUTOHEADER = @AUTOHEADER@
+AUTOMAKE = @AUTOMAKE@
+AWK = @AWK@
+BABL_CFLAGS = @BABL_CFLAGS@
+BABL_LIBS = @BABL_LIBS@
+BABL_REQUIRED_VERSION = @BABL_REQUIRED_VERSION@
+BUG_REPORT_URL = @BUG_REPORT_URL@
+BUILD_EXEEXT = @BUILD_EXEEXT@
+BUILD_OBJEXT = @BUILD_OBJEXT@
+BZIP2_LIBS = @BZIP2_LIBS@
+CAIRO_CFLAGS = @CAIRO_CFLAGS@
+CAIRO_LIBS = @CAIRO_LIBS@
+CAIRO_PDF_CFLAGS = @CAIRO_PDF_CFLAGS@
+CAIRO_PDF_LIBS = @CAIRO_PDF_LIBS@
+CAIRO_PDF_REQUIRED_VERSION = @CAIRO_PDF_REQUIRED_VERSION@
+CAIRO_REQUIRED_VERSION = @CAIRO_REQUIRED_VERSION@
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+DLLTOOL = @DLLTOOL@
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+GDK_PIXBUF_LIBS = @GDK_PIXBUF_LIBS@
+GDK_PIXBUF_REQUIRED_VERSION = @GDK_PIXBUF_REQUIRED_VERSION@
+GEGL = @GEGL@
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+GIMP_MODULES = @GIMP_MODULES@
+GIMP_PACKAGE_REVISION = @GIMP_PACKAGE_REVISION@
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+GIMP_PLUGINS = @GIMP_PLUGINS@
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+GMODULE_NO_EXPORT_CFLAGS = @GMODULE_NO_EXPORT_CFLAGS@
+GMODULE_NO_EXPORT_LIBS = @GMODULE_NO_EXPORT_LIBS@
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+GTKDOC_CHECK_PATH = @GTKDOC_CHECK_PATH@
+GTKDOC_DEPS_CFLAGS = @GTKDOC_DEPS_CFLAGS@
+GTKDOC_DEPS_LIBS = @GTKDOC_DEPS_LIBS@
+GTKDOC_MKPDF = @GTKDOC_MKPDF@
+GTKDOC_REBASE = @GTKDOC_REBASE@
+GTK_CFLAGS = @GTK_CFLAGS@
+GTK_LIBS = @GTK_LIBS@
+GTK_MAC_INTEGRATION_CFLAGS = @GTK_MAC_INTEGRATION_CFLAGS@
+GTK_MAC_INTEGRATION_LIBS = @GTK_MAC_INTEGRATION_LIBS@
+GTK_REQUIRED_VERSION = @GTK_REQUIRED_VERSION@
+GTK_UPDATE_ICON_CACHE = @GTK_UPDATE_ICON_CACHE@
+GUDEV_CFLAGS = @GUDEV_CFLAGS@
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+HARFBUZZ_CFLAGS = @HARFBUZZ_CFLAGS@
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+HAVE_CXX14 = @HAVE_CXX14@
+HAVE_FINITE = @HAVE_FINITE@
+HAVE_ISFINITE = @HAVE_ISFINITE@
+HAVE_VFORK = @HAVE_VFORK@
+HOST_GLIB_COMPILE_RESOURCES = @HOST_GLIB_COMPILE_RESOURCES@
+HTML_DIR = @HTML_DIR@
+INSTALL = @INSTALL@
+INSTALL_DATA = @INSTALL_DATA@
+INSTALL_PROGRAM = @INSTALL_PROGRAM@
+INSTALL_SCRIPT = @INSTALL_SCRIPT@
+INSTALL_STRIP_PROGRAM = @INSTALL_STRIP_PROGRAM@
+INSTOBJEXT = @INSTOBJEXT@
+INTLLIBS = @INTLLIBS@
+INTLTOOL_EXTRACT = @INTLTOOL_EXTRACT@
+INTLTOOL_MERGE = @INTLTOOL_MERGE@
+INTLTOOL_PERL = @INTLTOOL_PERL@
+INTLTOOL_REQUIRED_VERSION = @INTLTOOL_REQUIRED_VERSION@
+INTLTOOL_UPDATE = @INTLTOOL_UPDATE@
+INTLTOOL_V_MERGE = @INTLTOOL_V_MERGE@
+INTLTOOL_V_MERGE_OPTIONS = @INTLTOOL_V_MERGE_OPTIONS@
+INTLTOOL__v_MERGE_ = @INTLTOOL__v_MERGE_@
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+ISO_CODES_LOCALEDIR = @ISO_CODES_LOCALEDIR@
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+MIME_INFO_LIBS = @MIME_INFO_LIBS@
+MIME_TYPES = @MIME_TYPES@
+MKDIR_P = @MKDIR_P@
+MKINSTALLDIRS = @MKINSTALLDIRS@
+MMX_EXTRA_CFLAGS = @MMX_EXTRA_CFLAGS@
+MNG_CFLAGS = @MNG_CFLAGS@
+MNG_LIBS = @MNG_LIBS@
+MSGFMT = @MSGFMT@
+MSGFMT_OPTS = @MSGFMT_OPTS@
+MSGMERGE = @MSGMERGE@
+MYPAINT_BRUSHES_CFLAGS = @MYPAINT_BRUSHES_CFLAGS@
+MYPAINT_BRUSHES_LIBS = @MYPAINT_BRUSHES_LIBS@
+NATIVE_GLIB_CFLAGS = @NATIVE_GLIB_CFLAGS@
+NATIVE_GLIB_LIBS = @NATIVE_GLIB_LIBS@
+NM = @NM@
+NMEDIT = @NMEDIT@
+OBJDUMP = @OBJDUMP@
+OBJEXT = @OBJEXT@
+OPENEXR_CFLAGS = @OPENEXR_CFLAGS@
+OPENEXR_LIBS = @OPENEXR_LIBS@
+OPENEXR_REQUIRED_VERSION = @OPENEXR_REQUIRED_VERSION@
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+OTOOL64 = @OTOOL64@
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+PYTHON_INCLUDES = @PYTHON_INCLUDES@
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+WEB_PAGE = @WEB_PAGE@
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+XMC_CFLAGS = @XMC_CFLAGS@
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+XSLTPROC = @XSLTPROC@
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+am__quote = @am__quote@
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+build_alias = @build_alias@
+build_cpu = @build_cpu@
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+build_vendor = @build_vendor@
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+mandir = @mandir@
+manpage_gimpdir = @manpage_gimpdir@
+mkdir_p = @mkdir_p@
+ms_librarian = @ms_librarian@
+mypaint_brushes_dir = @mypaint_brushes_dir@
+oldincludedir = @oldincludedir@
+pdfdir = @pdfdir@
+pkgpyexecdir = @pkgpyexecdir@
+pkgpythondir = @pkgpythondir@
+prefix = @prefix@
+program_transform_name = @program_transform_name@
+psdir = @psdir@
+pyexecdir = @pyexecdir@
+pythondir = @pythondir@
+runstatedir = @runstatedir@
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+top_build_prefix = @top_build_prefix@
+top_builddir = @top_builddir@
+top_srcdir = @top_srcdir@
+SUBDIRS = images
+scriptdatadir = $(gimpdatadir)/scripts
+scripts = \
+	script-fu.init			\
+	script-fu-compat.init		\
+	plug-in-compat.init		\
+	add-bevel.scm			\
+	addborder.scm			\
+	blend-anim.scm			\
+	burn-in-anim.scm		\
+	carve-it.scm			\
+	chrome-it.scm			\
+	circuit.scm			\
+	clothify.scm			\
+	coffee.scm			\
+	copy-visible.scm		\
+	difference-clouds.scm		\
+	distress-selection.scm		\
+	drop-shadow.scm			\
+	erase-rows.scm			\
+	font-map.scm			\
+	fuzzyborder.scm			\
+	gimp-online.scm			\
+	gradient-example.scm		\
+	grid-system.scm			\
+	guides-from-selection.scm	\
+	guides-new.scm			\
+	guides-new-percent.scm		\
+	guides-remove-all.scm		\
+	lava.scm			\
+	line-nova.scm			\
+	mkbrush.scm			\
+	old-photo.scm			\
+	palette-export.scm		\
+	paste-as-brush.scm		\
+	paste-as-pattern.scm		\
+	perspective-shadow.scm		\
+	predator.scm			\
+	reverse-layers.scm		\
+	ripply-anim.scm			\
+	round-corners.scm \
+	script-fu-set-cmap.scm		\
+	script-fu-util.scm		\
+	select-to-brush.scm		\
+	select-to-image.scm		\
+	select-to-pattern.scm		\
+	selection-round.scm		\
+	slide.scm			\
+	spinning-globe.scm		\
+	spyrogimp.scm			\
+	tileblur.scm			\
+	unsharp-mask.scm		\
+	waves-anim.scm			\
+	weave.scm			\
+	xach-effect.scm
+
+test_scripts = \
+	contactsheet.scm		\
+	test-sphere.scm			\
+	ts-helloworld.scm
+
+scriptdata_DATA = $(scripts)
+EXTRA_DIST = $(scripts) $(test_scripts)
+all: all-recursive
+
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+# (1) if the variable is set in 'config.status', edit 'config.status'
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diff --git a/plug-ins/script-fu/scripts/add-bevel.scm b/plug-ins/script-fu/scripts/add-bevel.scm
new file mode 100644
index 0000000..6e0f951
--- /dev/null
+++ b/plug-ins/script-fu/scripts/add-bevel.scm
@@ -0,0 +1,202 @@
+; GIMP - The GNU Image Manipulation Program
+; Copyright (C) 1995 Spencer Kimball and Peter Mattis
+;
+; add-bevel.scm version 1.04
+; Time-stamp: <2004-02-09 17:07:06 simon>
+;
+; This program is free software: you can redistribute it and/or modify
+; it under the terms of the GNU General Public License as published by
+; the Free Software Foundation; either version 3 of the License, or
+; (at your option) any later version.
+;
+; This program is distributed in the hope that it will be useful,
+; but WITHOUT ANY WARRANTY; without even the implied warranty of
+; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+; GNU General Public License for more details.
+;
+; You should have received a copy of the GNU General Public License
+; along with this program.  If not, see <https://www.gnu.org/licenses/>.
+;
+; Copyright (C) 1997 Andrew Donkin  (ard@cs.waikato.ac.nz)
+; Contains code from add-shadow.scm by Sven Neumann
+; (neumanns@uni-duesseldorf.de) (thanks Sven).
+;
+; Adds a bevel to an image.  See http://www.cs.waikato.ac.nz/~ard/gimp/
+;
+; If there is a selection, it is bevelled.
+; Otherwise if there is an alpha channel, the selection is taken from it
+; and bevelled.
+; Otherwise the part of the layer inside the image boundaries is bevelled.
+;
+; The selection is set on exit, so Select->Invert then Edit->Clear will
+; leave a cut-out.  Then use Sven's add-shadow for that
+; floating-bumpmapped-texture cliche.
+
+;
+; 1.01: now works on offset layers.
+; 1.02: has crop-pixel-border option to trim one pixel off each edge of the
+;       bevelled image.  Bumpmapping leaves edge pixels unchanged, which
+;       looks bad.  Oddly, this is not apparent in GIMP - you have to
+;       save the image and load it into another viewer.  First noticed in
+;       Nutscrape.
+;       Changed path (removed "filters/").
+; 1.03: adds one-pixel border before bumpmapping, and removes it after.
+;       Got rid of the crop-pixel-border option (no longer reqd).
+; 1.04: Fixed undo handling, ensure that bumpmap is big enough,
+;       (instead of resizing the image). Removed references to outdated
+;       bumpmap plugin.     (Simon)
+; 1.05  When there is no selection, bevel the whole layer instead of the
+;       whole image (which was broken in the first place).
+;       Also fixed some bugs with setting the selection when there is no
+;       initial selection.     (Barak Itkin)
+;
+
+(define (script-fu-add-bevel img
+                             drawable
+                             thickness
+                             work-on-copy
+                             keep-bump-layer)
+
+  (let* (
+        (index 1)
+        (greyness 0)
+        (thickness (abs thickness))
+        (type (car (gimp-drawable-type-with-alpha drawable)))
+        (image (if (= work-on-copy TRUE) (car (gimp-image-duplicate img)) img))
+        (pic-layer (car (gimp-image-get-active-drawable image)))
+        (offsets (gimp-drawable-offsets pic-layer))
+        (width (car (gimp-drawable-width pic-layer)))
+        (height (car (gimp-drawable-height pic-layer)))
+
+        ; Bumpmap has a one pixel border on each side
+        (bump-layer (car (gimp-layer-new image
+                                         (+ width 2)
+                                         (+ height 2)
+                                         RGB-IMAGE
+                                         _"Bumpmap"
+                                         100
+                                         LAYER-MODE-NORMAL)))
+
+        (selection-exists (car (gimp-selection-bounds image)))
+        (selection 0)
+        )
+
+    (gimp-context-push)
+    (gimp-context-set-defaults)
+
+    ; disable undo on copy, start group otherwise
+    (if (= work-on-copy TRUE)
+      (gimp-image-undo-disable image)
+      (gimp-image-undo-group-start image)
+    )
+
+    (gimp-image-insert-layer image bump-layer 0 1)
+
+    ; If the layer we're bevelling is offset from the image's origin, we
+    ; have to do the same to the bumpmap
+    (gimp-layer-set-offsets bump-layer (- (car offsets) 1)
+                                       (- (cadr offsets) 1))
+
+    ;------------------------------------------------------------
+    ;
+    ; Set the selection to the area we want to bevel.
+    ;
+    (if (= selection-exists 0)
+        (gimp-image-select-item image CHANNEL-OP-REPLACE pic-layer)
+    )
+
+    ; Store it for later.
+    (set! selection (car (gimp-selection-save image)))
+    ; Try to lose the jaggies
+    (gimp-selection-feather image 2)
+
+    ;------------------------------------------------------------
+    ;
+    ; Initialise our bumpmap
+    ;
+    (gimp-context-set-background '(0 0 0))
+    (gimp-drawable-fill bump-layer FILL-BACKGROUND)
+
+    (while (and (< index thickness)
+                (= (car (gimp-selection-is-empty image)) FALSE)
+           )
+           (set! greyness (/ (* index 255) thickness))
+           (gimp-context-set-background (list greyness greyness greyness))
+           ;(gimp-selection-feather image 1) ;Stop the slopey jaggies?
+           (gimp-drawable-edit-fill bump-layer FILL-BACKGROUND)
+           (gimp-selection-shrink image 1)
+           (set! index (+ index 1))
+    )
+    ; Now the white interior
+    (if (= (car (gimp-selection-is-empty image)) FALSE)
+        (begin
+          (gimp-context-set-background '(255 255 255))
+          (gimp-drawable-edit-fill bump-layer FILL-BACKGROUND)
+        )
+    )
+
+    ;------------------------------------------------------------
+    ;
+    ; Do the bump.
+    ;
+    (gimp-selection-none image)
+
+    ; To further lessen jaggies?
+    ;(plug-in-gauss-rle RUN-NONINTERACTIVE image bump-layer thickness TRUE TRUE)
+
+
+    ;
+    ; BUMPMAP INVOCATION:
+    ;
+    (plug-in-bump-map RUN-NONINTERACTIVE image pic-layer bump-layer 125 45 3 0 0 0 0 TRUE FALSE 1)
+
+    ;------------------------------------------------------------
+    ;
+    ; Restore things
+    ;
+    (if (= selection-exists 0)
+        (gimp-selection-none image)        ; No selection to start with
+        (gimp-image-select-item image CHANNEL-OP-REPLACE selection)
+    )
+    ; If they started with a selection, they can Select->Invert then
+    ; Edit->Clear for a cutout.
+
+    ; clean up
+    (gimp-image-remove-channel image selection)
+    (if (= keep-bump-layer TRUE)
+        (gimp-item-set-visible bump-layer 0)
+        (gimp-image-remove-layer image bump-layer)
+    )
+
+    (gimp-image-set-active-layer image pic-layer)
+
+    ; enable undo / end undo group
+    (if (= work-on-copy TRUE)
+      (begin
+        (gimp-display-new image)
+        (gimp-image-undo-enable image)
+      )
+      (gimp-image-undo-group-end image)
+    )
+
+    (gimp-displays-flush)
+
+    (gimp-context-pop)
+  )
+)
+
+(script-fu-register "script-fu-add-bevel"
+  _"Add B_evel..."
+  _"Add a beveled border to an image"
+  "Andrew Donkin <ard@cs.waikato.ac.nz>"
+  "Andrew Donkin"
+  "1997/11/06"
+  "RGB*"
+  SF-IMAGE       "Image"           0
+  SF-DRAWABLE    "Drawable"        0
+  SF-ADJUSTMENT _"Thickness"       '(5 0 30 1 2 0 0)
+  SF-TOGGLE     _"Work on copy"    TRUE
+  SF-TOGGLE     _"Keep bump layer" FALSE
+)
+
+(script-fu-menu-register "script-fu-add-bevel" "<Image>/Filters/Decor")
diff --git a/plug-ins/script-fu/scripts/addborder.scm b/plug-ins/script-fu/scripts/addborder.scm
new file mode 100644
index 0000000..ed47feb
--- /dev/null
+++ b/plug-ins/script-fu/scripts/addborder.scm
@@ -0,0 +1,177 @@
+; GIMP - The GNU Image Manipulation Program
+; Copyright (C) 1995 Spencer Kimball and Peter Mattis
+;
+; This program is free software: you can redistribute it and/or modify
+; it under the terms of the GNU General Public License as published by
+; the Free Software Foundation; either version 3 of the License, or
+; (at your option) any later version.
+;
+; This program is distributed in the hope that it will be useful,
+; but WITHOUT ANY WARRANTY; without even the implied warranty of
+; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+; GNU General Public License for more details.
+;
+; You should have received a copy of the GNU General Public License
+; along with this program.  If not, see <https://www.gnu.org/licenses/>.
+;
+; Copyright (C) 1997 Andy Thomas alt@picnic.demon.co.uk
+;
+; Version 0.2 10.6.97 Changed to new script-fu interface in 0.99.10
+
+; Delta the color by the given amount. Check for boundary conditions
+; If < 0 set to zero
+; If > 255 set to 255
+; Return the new value
+
+(define (script-fu-addborder aimg adraw xsize ysize color dvalue)
+
+  (define (deltacolor col delta)
+    (let* ((newcol (+ col delta)))
+      (if (< newcol 0) (set! newcol 0))
+      (if (> newcol 255) (set! newcol 255))
+      newcol
+    )
+  )
+
+  (define (adjcolor col delta)
+    (mapcar (lambda (x) (deltacolor x delta)) col)
+  )
+
+  (define (gen_top_array xsize ysize owidth oheight width height)
+    (let* ((n_array (cons-array 10 'double)))
+      (aset n_array 0 0 )
+      (aset n_array 1 0 )
+      (aset n_array 2 xsize)
+      (aset n_array 3 ysize)
+      (aset n_array 4 (+ xsize owidth))
+      (aset n_array 5 ysize)
+      (aset n_array 6 width)
+      (aset n_array 7 0 )
+      (aset n_array 8 0 )
+      (aset n_array 9 0 )
+      n_array)
+  )
+
+  (define (gen_left_array xsize ysize owidth oheight width height)
+    (let* ((n_array (cons-array 10 'double)))
+      (aset n_array 0 0 )
+      (aset n_array 1 0 )
+      (aset n_array 2 xsize)
+      (aset n_array 3 ysize)
+      (aset n_array 4 xsize)
+      (aset n_array 5 (+ ysize oheight))
+      (aset n_array 6 0 )
+      (aset n_array 7 height )
+      (aset n_array 8 0 )
+      (aset n_array 9 0 )
+      n_array)
+  )
+
+  (define (gen_right_array xsize ysize owidth oheight width height)
+    (let* ((n_array (cons-array 10 'double)))
+      (aset n_array 0 width )
+      (aset n_array 1 0 )
+      (aset n_array 2 (+ xsize owidth))
+      (aset n_array 3 ysize)
+      (aset n_array 4 (+ xsize owidth))
+      (aset n_array 5 (+ ysize oheight))
+      (aset n_array 6 width)
+      (aset n_array 7 height)
+      (aset n_array 8 width )
+      (aset n_array 9 0 )
+      n_array)
+  )
+
+  (define (gen_bottom_array xsize ysize owidth oheight width height)
+    (let* ((n_array (cons-array 10 'double)))
+      (aset n_array 0 0 )
+      (aset n_array 1 height)
+      (aset n_array 2 xsize)
+      (aset n_array 3 (+ ysize oheight))
+      (aset n_array 4 (+ xsize owidth))
+      (aset n_array 5 (+ ysize oheight))
+      (aset n_array 6 width)
+      (aset n_array 7 height)
+      (aset n_array 8 0 )
+      (aset n_array 9 height)
+      n_array)
+  )
+
+  (let* ((img (car (gimp-item-get-image adraw)))
+         (owidth (car (gimp-image-width img)))
+         (oheight (car (gimp-image-height img)))
+         (width (+ owidth (* 2 xsize)))
+         (height (+ oheight (* 2 ysize)))
+         (layer (car (gimp-layer-new img
+                                     width height
+                                     (car (gimp-drawable-type-with-alpha adraw))
+                                     _"Border Layer" 100 LAYER-MODE-NORMAL))))
+
+    (gimp-context-push)
+    (gimp-context-set-paint-mode LAYER-MODE-NORMAL)
+    (gimp-context-set-opacity 100.0)
+    (gimp-context-set-antialias FALSE)
+    (gimp-context-set-feather FALSE)
+
+    (gimp-image-undo-group-start img)
+
+    (gimp-image-resize img
+                       width
+                       height
+                       xsize
+                       ysize)
+
+    (gimp-image-insert-layer img layer 0 0)
+    (gimp-drawable-fill layer FILL-TRANSPARENT)
+
+    (gimp-context-set-background (adjcolor color dvalue))
+    (gimp-image-select-polygon img
+                               CHANNEL-OP-REPLACE
+                               10
+                               (gen_top_array xsize ysize owidth oheight width height))
+    (gimp-drawable-edit-fill layer FILL-BACKGROUND)
+    (gimp-context-set-background (adjcolor color (/ dvalue 2)))
+    (gimp-image-select-polygon img
+                               CHANNEL-OP-REPLACE
+                               10
+                               (gen_left_array xsize ysize owidth oheight width height))
+    (gimp-drawable-edit-fill layer FILL-BACKGROUND)
+    (gimp-context-set-background (adjcolor color (- 0 (/ dvalue 2))))
+    (gimp-image-select-polygon img
+                               CHANNEL-OP-REPLACE
+                               10
+                               (gen_right_array xsize ysize owidth oheight width height))
+
+    (gimp-drawable-edit-fill layer FILL-BACKGROUND)
+    (gimp-context-set-background (adjcolor color (- 0 dvalue)))
+    (gimp-image-select-polygon img
+                               CHANNEL-OP-REPLACE
+                               10
+                               (gen_bottom_array xsize ysize owidth oheight width height))
+
+    (gimp-drawable-edit-fill layer FILL-BACKGROUND)
+    (gimp-selection-none img)
+    (gimp-image-undo-group-end img)
+    (gimp-displays-flush)
+
+    (gimp-context-pop)
+    )
+)
+
+(script-fu-register "script-fu-addborder"
+  _"Add _Border..."
+  _"Add a border around an image"
+  "Andy Thomas <alt@picnic.demon.co.uk>"
+  "Andy Thomas"
+  "6/10/97"
+  "*"
+  SF-IMAGE       "Input image" 0
+  SF-DRAWABLE    "Input drawable" 0
+  SF-ADJUSTMENT _"Border X size" '(12 1 250 1 10 0 1)
+  SF-ADJUSTMENT _"Border Y size" '(12 1 250 1 10 0 1)
+  SF-COLOR      _"Border color" '(38 31 207)
+  SF-ADJUSTMENT _"Delta value on color" '(25 1 255 1 10 0 1)
+)
+
+(script-fu-menu-register "script-fu-addborder"
+                         "<Image>/Filters/Decor")
diff --git a/plug-ins/script-fu/scripts/blend-anim.scm b/plug-ins/script-fu/scripts/blend-anim.scm
new file mode 100644
index 0000000..517b1c5
--- /dev/null
+++ b/plug-ins/script-fu/scripts/blend-anim.scm
@@ -0,0 +1,242 @@
+; GIMP - The GNU Image Manipulation Program
+; Copyright (C) 1995 Spencer Kimball and Peter Mattis
+;
+; This program is free software: you can redistribute it and/or modify
+; it under the terms of the GNU General Public License as published by
+; the Free Software Foundation; either version 3 of the License, or
+; (at your option) any later version.
+;
+; This program is distributed in the hope that it will be useful,
+; but WITHOUT ANY WARRANTY; without even the implied warranty of
+; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+; GNU General Public License for more details.
+;
+; You should have received a copy of the GNU General Public License
+; along with this program.  If not, see <https://www.gnu.org/licenses/>.
+;
+;
+; blend-anim.scm   version 1.03   1999/12/21
+;
+; CHANGE-LOG:
+; 1.00 - initial release
+; 1.01 - some code cleanup, no real changes
+; 1.02 - use gimp-message to output an error message if called
+;        with less than three layers
+; 1.03 - only call blur plugin when blut-radius >= 1.0
+;
+; Copyright (C) 1997-1999 Sven Neumann <sven@gimp.org>
+;
+;
+; Blends two or more layers over a background, so that an animation can
+; be saved. A minimum of three layers is required.
+
+(define (script-fu-blend-anim img
+                              drawable
+                              frames
+                              max-blur
+                              looped)
+
+  (define (multi-raise-layer image layer times)
+    (while (> times 0)
+       (gimp-image-raise-item image layer)
+       (set! times (- times 1))
+    )
+  )
+
+  (let* (
+        (max-blur (max max-blur 0))
+        (frames (max frames 0))
+        (image (car (gimp-image-duplicate img)))
+        (width (car (gimp-image-width image)))
+        (height (car (gimp-image-height image)))
+        (layers (gimp-image-get-layers image))
+        (num-layers (car layers))
+        (layer-array (cadr layers))
+        (slots (- num-layers 2))
+        (bg-layer (aref layer-array (- num-layers 1)))
+        (max-width 0)
+        (max-height 0)
+        (offset-x 0)
+        (offset-y 0)
+        )
+
+    (if (> num-layers 2)
+        (begin
+		  (gimp-image-undo-disable image)
+
+		  (if (= looped TRUE)
+			  ; add a copy of the lowest blend layer on top
+			  (let* ((copy (car (gimp-layer-copy
+						 (aref layer-array (- num-layers 2)) TRUE))))
+				(gimp-image-insert-layer image copy 0 0)
+				(set! layers (gimp-image-get-layers image))
+				(set! num-layers (car layers))
+				(set! layer-array (cadr layers))
+				(set! slots (- num-layers 2))
+				(set! bg-layer (aref layer-array (- num-layers 1)))))
+
+		  ; make all layers invisible and check for sizes
+		  (let* ((min-offset-x width)
+				 (min-offset-y height)
+				 (layer-count slots))
+			(gimp-item-set-visible bg-layer FALSE)
+			(while (> layer-count -1)
+				   (let* ((layer (aref layer-array layer-count))
+				  (layer-width (+ (car (gimp-drawable-width layer))
+						  (* max-blur 2)))
+				  (layer-height (+ (car (gimp-drawable-height layer))
+						   (* max-blur 2)))
+				  (layer-offsets (gimp-drawable-offsets layer))
+				  (layer-offset-x (- (car layer-offsets) max-blur))
+				  (layer-offset-y (- (cadr layer-offsets) max-blur)))
+				 (gimp-item-set-visible layer FALSE)
+				 (set! max-width (max max-width layer-width))
+				 (set! max-height (max max-height layer-height))
+				 (set! min-offset-x (min min-offset-x layer-offset-x))
+				 (set! min-offset-y (min min-offset-y layer-offset-y))
+				 (set! layer-count (- layer-count 1))))
+			(set! offset-x (- (car (gimp-drawable-offsets bg-layer))
+					  min-offset-x))
+			(set! offset-y (- (cadr (gimp-drawable-offsets bg-layer))
+					  min-offset-y)))
+
+		  ; create intermediate frames by merging copies of adjacent layers
+		  ; with the background layer
+		  (let* ((layer-count slots))
+			(while (> layer-count 0)
+			   (let* ((frame-count frames)
+				  (lower-layer (aref layer-array layer-count))
+				  (upper-layer (aref layer-array (- layer-count 1))))
+				 (while (> frame-count 0)
+					(let* ((opacity (* (/ frame-count (+ frames 1)) 100))
+				   (blur (/ (* opacity max-blur) 100))
+				   (upper-copy (car (gimp-layer-copy upper-layer TRUE)))
+				   (lower-copy (car (gimp-layer-copy lower-layer TRUE)))
+				   (bg-copy (car (gimp-layer-copy bg-layer TRUE))))
+				  (gimp-image-insert-layer image bg-copy 0 0)
+				  (gimp-image-insert-layer image lower-copy 0 0)
+				  (gimp-image-insert-layer image upper-copy 0 0)
+				  (gimp-item-set-visible upper-copy TRUE)
+				  (gimp-item-set-visible lower-copy TRUE)
+				  (gimp-item-set-visible bg-copy TRUE)
+				  (gimp-layer-set-opacity upper-copy (- 100 opacity))
+				  (gimp-layer-set-opacity lower-copy opacity)
+				  (gimp-layer-set-opacity bg-copy 100)
+				  (if (> max-blur 0)
+				  (let* ((layer-width (car (gimp-drawable-width upper-copy)))
+						 (layer-height (car (gimp-drawable-height upper-copy))))
+					(gimp-layer-set-lock-alpha upper-copy FALSE)
+					(gimp-layer-resize upper-copy
+							   (+ layer-width (* blur 2))
+							   (+ layer-height (* blur 2))
+							   blur
+							   blur)
+					(if (>= blur 1.0)
+						(plug-in-gauss-rle RUN-NONINTERACTIVE
+							   image
+							   upper-copy
+							   blur
+							   TRUE TRUE))
+					(set! blur (- max-blur blur))
+					(gimp-layer-set-lock-alpha lower-copy FALSE)
+					(set! layer-width (car (gimp-drawable-width
+								lower-copy)))
+					(set! layer-height (car (gimp-drawable-height
+								 lower-copy)))
+					(gimp-layer-resize lower-copy
+							   (+ layer-width (* blur 2))
+							   (+ layer-height (* blur 2))
+							   blur
+							   blur)
+					(if (>= blur 1.0)
+						(plug-in-gauss-rle RUN-NONINTERACTIVE
+							   image
+							   lower-copy
+							   blur
+							   TRUE TRUE))))
+				  (gimp-layer-resize bg-copy
+							 max-width
+							 max-height
+							 offset-x
+							 offset-y)
+				  (let* ((merged-layer (car (gimp-image-merge-visible-layers
+							   image CLIP-TO-IMAGE))))
+					(gimp-item-set-visible merged-layer FALSE))
+				  (set! frame-count (- frame-count 1))))
+				 (set! layer-count (- layer-count 1)))))
+
+		  ; merge all original blend layers but the lowest one
+			  ; with copies of the background layer
+		  (let* ((layer-count 0))
+			(while (< layer-count slots)
+				   (let* ((orig-layer (aref layer-array layer-count))
+				  (bg-copy (car (gimp-layer-copy bg-layer TRUE))))
+				 (gimp-image-insert-layer image
+						   bg-copy
+						   -1
+						   (* layer-count (+ frames 1)))
+				 (multi-raise-layer image
+						orig-layer
+						(+ (* (- slots layer-count) frames) 1))
+				 (gimp-item-set-visible orig-layer TRUE)
+				 (gimp-item-set-visible bg-copy TRUE)
+				 (gimp-layer-resize bg-copy
+						max-width
+						max-height
+						offset-x
+						offset-y)
+				 (let* ((merged-layer (car (gimp-image-merge-visible-layers
+						  image CLIP-TO-IMAGE))))
+			   (gimp-item-set-visible merged-layer FALSE))
+			   (set! layer-count (+ layer-count 1)))))
+
+		  ; merge the lowest blend layer with the background layer
+		  (let* ((orig-layer (aref layer-array (- num-layers 2))))
+			(gimp-item-set-visible bg-layer TRUE)
+			(gimp-item-set-visible orig-layer TRUE)
+			(gimp-image-merge-visible-layers image CLIP-TO-IMAGE))
+
+		  ; make all layers visible again
+		  (let* ((result-layers (gimp-image-get-layers image))
+				 (num-result-layers (car result-layers))
+				 (result-layer-array (cadr result-layers))
+				 (layer-count (- num-result-layers 1)))
+			(while (> layer-count -1)
+			   (let* ((layer (aref result-layer-array layer-count))
+				  (name (string-append _"Frame" " "
+						       (number->string
+							(- num-result-layers layer-count) 10))))
+				 (gimp-item-set-visible layer TRUE)
+				 (gimp-item-set-name layer name)
+				 (set! layer-count (- layer-count 1))))
+
+			(if (= looped TRUE)
+				; remove the topmost layer
+				(gimp-image-remove-layer image (aref result-layer-array 0))))
+
+		  (gimp-image-undo-enable image)
+		  (gimp-display-new image)
+		  (gimp-displays-flush)
+		)
+
+      (gimp-message _"Blend Animation needs at least three source layers")
+    )
+  )
+)
+
+(script-fu-register "script-fu-blend-anim"
+    _"_Blend..."
+    _"Create intermediate layers to blend two or more layers over a background as an animation"
+    "Sven Neumann <sven@gimp.org>"
+    "Sven Neumann"
+    "1999/12/21"
+    "RGB* GRAY*"
+    SF-IMAGE       "Image"               0
+    SF-DRAWABLE    "Drawable"            0
+    SF-ADJUSTMENT _"Intermediate frames" '(3 1 1024 1 10 0 1)
+    SF-ADJUSTMENT _"Max. blur radius"    '(0 0 1024 1 10 0 1)
+    SF-TOGGLE     _"Looped"              TRUE
+)
+
+(script-fu-menu-register "script-fu-blend-anim"
+                         "<Image>/Filters/Animation/Animators")
diff --git a/plug-ins/script-fu/scripts/burn-in-anim.scm b/plug-ins/script-fu/scripts/burn-in-anim.scm
new file mode 100644
index 0000000..4842e8a
--- /dev/null
+++ b/plug-ins/script-fu/scripts/burn-in-anim.scm
@@ -0,0 +1,243 @@
+;
+;  burn-in-anim.scm V2.1  -  script-fu for GIMP 1.1 and higher
+;
+;  Copyright (C) 9/2000  Roland Berger
+;  roland@fuchur.leute.server.de
+;  http://fuchur.leute.server.de
+;
+;  Let text appear and fade out with a "burn-in" like SFX.
+;  Works on an image with a text and a background layer
+;
+;  Copying Policy:  GNU Public License http://www.gnu.org
+;
+
+(define (script-fu-burn-in-anim org-img
+                                org-layer
+                                glow-color
+                                fadeout
+                                bl-width
+                                corona-width
+                                after-glow
+                                show-glow
+                                optimize
+                                speed)
+
+  (let* (
+        ;--- main variable: "bl-x" runs from 0 to layer-width
+        (bl-x 0)
+        (frame-nr 0)
+        (img 0)
+        (source-layer 0)
+        (bg-source-layer 0)
+        (source-layer-width 0)
+        (bg-layer 0)
+        (bg-layer-name 0)
+        (bl-layer 0)
+        (bl-layer-name 0)
+        (bl-mask 0)
+        (bl-layer-width 0)
+        (bl-height 0)
+        (bl-x-off 0)
+        (bl-y-off 0)
+        (nofadeout-bl-x-off 0)
+        (nofadeout-bl-width 0)
+        (blended-layer 0)
+        (img-display 0)
+        )
+
+    (if (< speed 1)
+        (set! speed (* -1 speed)) )
+
+    ;--- check image and work on a copy
+    (if (and (= (car (gimp-image-get-layers org-img)) 2)
+             (= (car (gimp-image-get-floating-sel org-img)) -1))
+
+        ;--- main program structure starts here, begin of "if-1"
+        (begin
+          (gimp-context-push)
+          (gimp-context-set-defaults)
+
+          (set! img (car (gimp-image-duplicate org-img)))
+          (gimp-image-undo-disable img)
+          (if (> (car (gimp-drawable-type org-layer)) 1 )
+              (gimp-image-convert-rgb img))
+          (set! source-layer    (aref (cadr (gimp-image-get-layers img)) 0 ))
+          (set! bg-source-layer (aref (cadr (gimp-image-get-layers img)) 1 ))
+          (set! source-layer-width (car (gimp-drawable-width  source-layer)))
+
+          ;--- hide layers, cause we want to "merge visible layers" later
+          (gimp-item-set-visible source-layer FALSE)
+          (gimp-item-set-visible bg-source-layer     FALSE)
+
+          ;--- process image horizontal with pixel-speed
+          (while (< bl-x (+ source-layer-width bl-width))
+              (set! bl-layer (car (gimp-layer-copy source-layer TRUE)))
+              (set! bl-layer-name (string-append "fr-nr"
+                                                 (number->string frame-nr 10) ) )
+
+              (gimp-image-insert-layer img bl-layer 0 -2)
+              (gimp-item-set-name bl-layer bl-layer-name)
+              (gimp-item-set-visible bl-layer TRUE)
+              (gimp-layer-set-lock-alpha bl-layer TRUE)
+              (gimp-layer-add-alpha bl-layer)
+
+              ;--- add an alpha mask for blending and select it
+              (gimp-image-select-item img CHANNEL-OP-REPLACE bl-layer)
+              (set! bl-mask (car (gimp-layer-create-mask bl-layer ADD-MASK-BLACK)))
+              (gimp-layer-add-mask bl-layer bl-mask)
+
+              ;--- handle layer geometry
+              (set! bl-layer-width source-layer-width)
+              (set! bl-height      (car (gimp-drawable-height bl-layer)))
+              (set! bl-x-off (- bl-x     bl-width))
+              (set! bl-x-off (+ bl-x-off (car  (gimp-drawable-offsets bl-layer))))
+              (set! bl-y-off             (cadr (gimp-drawable-offsets bl-layer)))
+
+              ;--- select a rectangular area to blend
+              (gimp-image-select-rectangle img CHANNEL-OP-REPLACE bl-x-off bl-y-off bl-width bl-height)
+              ;--- select at least 1 pixel!
+              (gimp-image-select-rectangle img CHANNEL-OP-ADD bl-x-off bl-y-off (+ bl-width 1) bl-height)
+
+              (if (= fadeout FALSE)
+                  (begin
+                    (set! nofadeout-bl-x-off (car (gimp-drawable-offsets bl-layer)))
+                    (set! nofadeout-bl-width (+ nofadeout-bl-x-off bl-x))
+                    (set! nofadeout-bl-width (max nofadeout-bl-width 1))
+                    (gimp-image-select-rectangle img CHANNEL-OP-REPLACE
+                                                 nofadeout-bl-x-off bl-y-off
+                                                 nofadeout-bl-width bl-height)
+                  )
+              )
+
+              ;--- alpha blending text to trans (fadeout)
+              (gimp-context-set-foreground '(255 255 255))
+              (gimp-context-set-background '(  0   0   0))
+              (if (= fadeout TRUE)
+                  (begin
+                    ; blend with 20% offset to get less transparency in the front
+		    (gimp-context-set-gradient-fg-bg-rgb)
+                    (gimp-drawable-edit-gradient-fill bl-mask
+						      GRADIENT-LINEAR 20
+						      FALSE 0 0
+						      TRUE
+						      (+ bl-x-off bl-width) 0
+						      bl-x-off 0)
+                  )
+              )
+
+              (if (= fadeout FALSE)
+                  (begin
+                    (gimp-context-set-foreground '(255 255 255))
+                    (gimp-drawable-edit-fill bl-mask FILL-FOREGROUND)
+                  )
+              )
+
+              (gimp-layer-remove-mask bl-layer MASK-APPLY)
+
+              ;--- add bright glow in front
+              (if (= show-glow TRUE)
+                  (begin
+                    ;--- add some brightness to whole text
+                    (if (= fadeout TRUE)
+                        (gimp-drawable-brightness-contrast bl-layer 0.787 0)
+                    )
+
+		    ;--- blend glow color inside the letters
+		    (gimp-context-set-foreground glow-color)
+		    (gimp-context-set-gradient-fg-transparent)
+		    (gimp-drawable-edit-gradient-fill bl-layer
+						      GRADIENT-LINEAR 0
+						      FALSE 0 0
+						      TRUE
+						      (+ bl-x-off bl-width) 0
+						      (- (+ bl-x-off bl-width) after-glow) 0)
+
+                    ;--- add corona effect
+		    (gimp-image-select-item img CHANNEL-OP-REPLACE bl-layer)
+		    (gimp-selection-sharpen img)
+		    (gimp-selection-grow img corona-width)
+		    (gimp-layer-set-lock-alpha bl-layer FALSE)
+		    (gimp-selection-feather img corona-width)
+		    (gimp-context-set-foreground glow-color)
+		    (gimp-drawable-edit-gradient-fill bl-layer
+						      GRADIENT-LINEAR 0
+						      FALSE 0 0
+						      TRUE
+						      (- (+ bl-x-off bl-width) corona-width) 0
+						      (- (+ bl-x-off bl-width) after-glow) 0)
+		    )
+		  )
+
+              ;--- merge with bg layer
+              (set! bg-layer (car (gimp-layer-copy bg-source-layer FALSE)))
+              (gimp-image-insert-layer img bg-layer 0 -1)
+              (gimp-image-lower-item img bg-layer)
+              (set! bg-layer-name (string-append "bg-"
+                                                 (number->string frame-nr 10)))
+              (gimp-item-set-name bg-layer bg-layer-name)
+              (gimp-item-set-visible bg-layer TRUE)
+              (set! blended-layer (car (gimp-image-merge-visible-layers img
+                                        CLIP-TO-IMAGE)))
+              ;(set! blended-layer bl-layer)
+              (gimp-item-set-visible blended-layer FALSE)
+
+              ;--- end of "while" loop
+              (set! frame-nr (+ frame-nr 1))
+              (set! bl-x     (+ bl-x speed))
+          )
+
+          ;--- finalize the job
+          (gimp-selection-none img)
+          (gimp-image-remove-layer img    source-layer)
+          (gimp-image-remove-layer img bg-source-layer)
+
+          (gimp-image-set-filename img "burn-in")
+
+          (if (= optimize TRUE)
+              (begin
+                (gimp-image-convert-indexed img CONVERT-DITHER-FS CONVERT-PALETTE-WEB 250 FALSE TRUE "")
+                (set! img (car (plug-in-animationoptimize RUN-NONINTERACTIVE
+                                                          img
+                                                          blended-layer)))
+              )
+          )
+
+          (gimp-item-set-visible (aref (cadr (gimp-image-get-layers img)) 0)
+                                  TRUE)
+          (gimp-image-undo-enable img)
+          (gimp-image-clean-all img)
+          (set! img-display (car (gimp-display-new img)))
+
+          (gimp-displays-flush)
+
+          (gimp-context-pop)
+        )
+
+        ;--- false form of "if-1"
+        (gimp-message _"The Burn-In script needs two layers in total. A foreground layer with transparency and a background layer.")
+    )
+  )
+)
+
+
+(script-fu-register "script-fu-burn-in-anim"
+    _"B_urn-In..."
+    _"Create intermediate layers to produce an animated 'burn-in' transition between two layers"
+    "Roland Berger roland@fuchur.leute.server.de"
+    "Roland Berger"
+    "January 2001"
+    "RGBA GRAYA INDEXEDA"
+    SF-IMAGE    "The image"            0
+    SF-DRAWABLE "Layer to animate"     0
+    SF-COLOR   _"Glow color"           "white"
+    SF-TOGGLE  _"Fadeout"              FALSE
+    SF-VALUE   _"Fadeout width"        "100"
+    SF-VALUE   _"Corona width"         "7"
+    SF-VALUE   _"After glow"           "50"
+    SF-TOGGLE  _"Add glowing"          TRUE
+    SF-TOGGLE  _"Prepare for GIF"      FALSE
+    SF-VALUE   _"Speed (pixels/frame)" "50"
+)
+
+(script-fu-menu-register "script-fu-burn-in-anim"
+                         "<Image>/Filters/Animation/Animators")
diff --git a/plug-ins/script-fu/scripts/carve-it.scm b/plug-ins/script-fu/scripts/carve-it.scm
new file mode 100644
index 0000000..a88fa08
--- /dev/null
+++ b/plug-ins/script-fu/scripts/carve-it.scm
@@ -0,0 +1,205 @@
+;  CARVE-IT
+;   Carving, embossing, & stamping
+;   Process taken from "The Photoshop 3 WOW! Book"
+;   http://www.peachpit.com
+;   This script requires a grayscale image containing a single layer.
+;   This layer is used as the mask for the carving effect
+;   NOTE: This script requires the image to be carved to either be an
+;   RGB color or grayscale image with a single layer. An indexed file
+;   can not be used due to the use of gimp-drawable-histogram and
+;   gimp-drawable-levels.
+
+
+(define (carve-scale val scale)
+  (* (sqrt val) scale))
+
+(define (calculate-inset-gamma img layer)
+  (let* ((stats (gimp-drawable-histogram layer 0 0.0 1.0))
+         (mean (car stats)))
+    (cond ((< mean 127) (+ 1.0 (* 0.5 (/ (- 127 mean) 127.0))))
+          ((>= mean 127) (- 1.0 (* 0.5 (/ (- mean 127) 127.0)))))))
+
+
+(define (copy-layer-carve-it dest-image dest-drawable source-image source-drawable)
+  (gimp-selection-all dest-image)
+  (gimp-drawable-edit-clear dest-drawable)
+  (gimp-selection-none dest-image)
+  (gimp-selection-all source-image)
+  (gimp-edit-copy source-drawable)
+      (let ((floating-sel (car (gimp-edit-paste dest-drawable FALSE))))
+        (gimp-floating-sel-anchor floating-sel)))
+
+
+
+(define (script-fu-carve-it mask-img mask-drawable bg-layer carve-white)
+  (let* (
+        (width (car (gimp-drawable-width mask-drawable)))
+        (height (car (gimp-drawable-height mask-drawable)))
+        (type (car (gimp-drawable-type bg-layer)))
+        (img (car (gimp-image-new width height (cond ((= type RGB-IMAGE) RGB)
+                                                     ((= type RGBA-IMAGE) RGB)
+                                                     ((= type GRAY-IMAGE) GRAY)
+                                                     ((= type GRAYA-IMAGE) GRAY)
+                                                     ((= type INDEXED-IMAGE) INDEXED)
+                                                     ((= type INDEXEDA-IMAGE) INDEXED)))))
+        (size (min width height))
+        (offx (carve-scale size 0.33))
+        (offy (carve-scale size 0.25))
+        (feather (carve-scale size 0.3))
+        (brush-size (carve-scale size 0.3))
+        (brush-name (car (gimp-brush-new "Carve It")))
+        (mask-fs 0)
+        (mask (car (gimp-channel-new img width height "Engraving Mask" 50 '(0 0 0))))
+        (inset-gamma (calculate-inset-gamma (car (gimp-item-get-image bg-layer)) bg-layer))
+        (mask-fat 0)
+        (mask-emboss 0)
+        (mask-highlight 0)
+        (mask-shadow 0)
+        (shadow-layer 0)
+        (highlight-layer 0)
+        (cast-shadow-layer 0)
+        (csl-mask 0)
+        (inset-layer 0)
+        (il-mask 0)
+        (bg-width (car (gimp-drawable-width bg-layer)))
+        (bg-height (car (gimp-drawable-height bg-layer)))
+        (bg-type (car (gimp-drawable-type bg-layer)))
+        (bg-image (car (gimp-item-get-image bg-layer)))
+        (layer1 (car (gimp-layer-new img bg-width bg-height bg-type "Layer1" 100 LAYER-MODE-NORMAL)))
+        )
+
+    (gimp-context-push)
+    (gimp-context-set-defaults)
+
+    (gimp-image-undo-disable img)
+
+    (gimp-image-insert-layer img layer1 0 0)
+
+    (gimp-selection-all img)
+    (gimp-drawable-edit-clear layer1)
+    (gimp-selection-none img)
+    (copy-layer-carve-it img layer1 bg-image bg-layer)
+
+    (gimp-edit-copy mask-drawable)
+    (gimp-image-insert-channel img mask -1 0)
+
+    (plug-in-tile RUN-NONINTERACTIVE img layer1 width height FALSE)
+    (set! mask-fs (car (gimp-edit-paste mask FALSE)))
+    (gimp-floating-sel-anchor mask-fs)
+    (if (= carve-white FALSE)
+        (gimp-drawable-invert mask FALSE))
+
+    (set! mask-fat (car (gimp-channel-copy mask)))
+    (gimp-image-insert-channel img mask-fat -1 0)
+    (gimp-image-select-item img CHANNEL-OP-REPLACE mask-fat)
+
+    (gimp-brush-set-shape brush-name BRUSH-GENERATED-CIRCLE)
+    (gimp-brush-set-spikes brush-name 2)
+    (gimp-brush-set-hardness brush-name 1.0)
+    (gimp-brush-set-spacing brush-name 25)
+    (gimp-brush-set-aspect-ratio brush-name 1)
+    (gimp-brush-set-angle brush-name 0)
+    (cond (<= brush-size 17) (gimp-brush-set-radius brush-name (\ brush-size 2))
+	  (else gimp-brush-set-radius brush-name (\ 19 2)))
+    (gimp-context-set-brush brush-name)
+
+    (gimp-context-set-foreground '(255 255 255))
+    (gimp-drawable-edit-stroke-selection mask-fat)
+    (gimp-selection-none img)
+
+    (set! mask-emboss (car (gimp-channel-copy mask-fat)))
+    (gimp-image-insert-channel img mask-emboss -1 0)
+    (plug-in-gauss-rle RUN-NONINTERACTIVE img mask-emboss feather TRUE TRUE)
+    (plug-in-emboss RUN-NONINTERACTIVE img mask-emboss 315.0 45.0 7 TRUE)
+
+    (gimp-context-set-background '(180 180 180))
+    (gimp-image-select-item img CHANNEL-OP-REPLACE mask-fat)
+    (gimp-selection-invert img)
+    (gimp-drawable-edit-fill mask-emboss FILL-BACKGROUND)
+    (gimp-image-select-item img CHANNEL-OP-REPLACE mask)
+    (gimp-drawable-edit-fill mask-emboss FILL-BACKGROUND)
+    (gimp-selection-none img)
+
+    (set! mask-highlight (car (gimp-channel-copy mask-emboss)))
+    (gimp-image-insert-channel img mask-highlight -1 0)
+    (gimp-drawable-levels mask-highlight 0
+			  0.7056 1.0 TRUE
+			  1.0
+			  0.0 1.0 TRUE)
+
+    (set! mask-shadow mask-emboss)
+    (gimp-drawable-levels mask-shadow 0
+			  0.0 0.70586 TRUE
+			  1.0
+			  0.0 1.0 TRUE)
+
+    (gimp-edit-copy mask-shadow)
+    (set! shadow-layer (car (gimp-edit-paste layer1 FALSE)))
+    (gimp-floating-sel-to-layer shadow-layer)
+    (gimp-layer-set-mode shadow-layer LAYER-MODE-MULTIPLY)
+
+    (gimp-edit-copy mask-highlight)
+    (set! highlight-layer (car (gimp-edit-paste shadow-layer FALSE)))
+    (gimp-floating-sel-to-layer highlight-layer)
+    (gimp-layer-set-mode highlight-layer LAYER-MODE-SCREEN)
+
+    (gimp-edit-copy mask)
+    (set! cast-shadow-layer (car (gimp-edit-paste highlight-layer FALSE)))
+    (gimp-floating-sel-to-layer cast-shadow-layer)
+    (gimp-layer-set-mode cast-shadow-layer LAYER-MODE-MULTIPLY)
+    (gimp-layer-set-opacity cast-shadow-layer 75)
+    (plug-in-gauss-rle RUN-NONINTERACTIVE img cast-shadow-layer feather TRUE TRUE)
+    (gimp-item-transform-translate cast-shadow-layer offx offy)
+
+    (set! csl-mask (car (gimp-layer-create-mask cast-shadow-layer ADD-MASK-BLACK)))
+    (gimp-layer-add-mask cast-shadow-layer csl-mask)
+    (gimp-image-select-item img CHANNEL-OP-REPLACE mask)
+    (gimp-context-set-background '(255 255 255))
+    (gimp-drawable-edit-fill csl-mask FILL-BACKGROUND)
+
+    (set! inset-layer (car (gimp-layer-copy layer1 TRUE)))
+    (gimp-image-insert-layer img inset-layer 0 1)
+
+    (set! il-mask (car (gimp-layer-create-mask inset-layer ADD-MASK-BLACK)))
+    (gimp-layer-add-mask inset-layer il-mask)
+    (gimp-image-select-item img CHANNEL-OP-REPLACE mask)
+    (gimp-context-set-background '(255 255 255))
+    (gimp-drawable-edit-fill il-mask FILL-BACKGROUND)
+    (gimp-selection-none img)
+    (gimp-selection-none bg-image)
+    (gimp-drawable-levels inset-layer 0 0.0 1.0 TRUE inset-gamma 0.0 1.0 TRUE)
+    (gimp-image-remove-channel img mask)
+    (gimp-image-remove-channel img mask-fat)
+    (gimp-image-remove-channel img mask-highlight)
+    (gimp-image-remove-channel img mask-shadow)
+
+    (gimp-item-set-name layer1 _"Carved Surface")
+    (gimp-item-set-name shadow-layer _"Bevel Shadow")
+    (gimp-item-set-name highlight-layer _"Bevel Highlight")
+    (gimp-item-set-name cast-shadow-layer _"Cast Shadow")
+    (gimp-item-set-name inset-layer _"Inset")
+
+    (gimp-brush-delete brush-name)
+
+    (gimp-display-new img)
+    (gimp-image-undo-enable img)
+
+    (gimp-context-pop)
+  )
+)
+
+(script-fu-register "script-fu-carve-it"
+    _"Stencil C_arve..."
+    _"Use the specified drawable as a stencil to carve from the specified image."
+    "Spencer Kimball"
+    "Spencer Kimball"
+    "1997"
+    "GRAY"
+    SF-IMAGE     "Mask image"        0
+    SF-DRAWABLE  "Mask drawable"     0
+    SF-DRAWABLE _"Image to carve"    0
+    SF-TOGGLE   _"Carve white areas" TRUE
+)
+
+(script-fu-menu-register "script-fu-carve-it"
+                         "<Image>/Filters/Decor")
diff --git a/plug-ins/script-fu/scripts/chrome-it.scm b/plug-ins/script-fu/scripts/chrome-it.scm
new file mode 100644
index 0000000..761ac47
--- /dev/null
+++ b/plug-ins/script-fu/scripts/chrome-it.scm
@@ -0,0 +1,252 @@
+;  CHROME-IT
+;   State of the art chrome effect for user-specified mask
+;   This script requires a grayscale image containing a single layer.
+;   This layer is used as the mask for the SOTA chrome effect
+
+(define (script-fu-sota-chrome-it mask-img mask-drawable chrome-saturation
+         chrome-lightness chrome-factor env-map hc cc carve-white)
+
+  (define (set-pt a index x y)
+    (begin
+      (aset a (* index 2) x)
+      (aset a (+ (* index 2) 1) y)
+    )
+  )
+
+  (define (spline-chrome-it)
+    (let* ((a (cons-array 18 'double)))
+      (set-pt a 0 0.0   0.0)
+      (set-pt a 1 0.125 0.9216)
+      (set-pt a 2 0.25  0.0902)
+      (set-pt a 3 0.375 0.9020)
+      (set-pt a 4 0.5   0.0989)
+      (set-pt a 5 0.625 0.9549)
+      (set-pt a 6 0.75  00784)
+      (set-pt a 7 0.875 0.9412)
+      (set-pt a 8 1.0   0.1216)
+      a
+    )
+  )
+
+
+  (define (shadows val)
+    (/ (* 0.96 val) 2.55)
+  )
+
+  (define (midtones val)
+    (/ val 2.55)
+  )
+
+  (define (highlights val)
+    ; The result is used as "gimp-drawable-color-balance" color parameter
+    ; and thus must be restricted to -100.0 <= highlights <= 100.0.
+    (min (/ (* 1.108 val) 2.55) 100.0)
+  )
+
+  (define (rval col)
+    (car col)
+  )
+
+  (define (gval col)
+    (cadr col)
+  )
+
+  (define (bval col)
+    (caddr col)
+  )
+
+  (define (sota-scale val scale chrome-factor)
+    (* (sqrt val) (* scale chrome-factor))
+  )
+
+  (define (copy-layer-chrome-it dest-image dest-drawable source-image source-drawable)
+    (gimp-selection-all dest-image)
+    (gimp-drawable-edit-clear dest-drawable)
+    (gimp-selection-none dest-image)
+    (gimp-selection-all source-image)
+    (gimp-edit-copy source-drawable)
+    (let (
+         (floating-sel (car (gimp-edit-paste dest-drawable FALSE)))
+         )
+         (gimp-floating-sel-anchor floating-sel)
+    )
+  )
+
+  (let* (
+        (banding-img (car (gimp-file-load RUN-NONINTERACTIVE env-map env-map)))
+        (banding-layer (car (gimp-image-get-active-drawable banding-img)))
+        (banding-height (car (gimp-drawable-height banding-layer)))
+        (banding-width (car (gimp-drawable-width banding-layer)))
+        (banding-type (car (gimp-drawable-type banding-layer)))
+        (width (car (gimp-drawable-width mask-drawable)))
+        (height (car (gimp-drawable-height mask-drawable)))
+        (img (car (gimp-image-new width height GRAY)))
+        (size (min width height))
+        (offx1 (sota-scale size 0.33 chrome-factor))
+        (offy1 (sota-scale size 0.25 chrome-factor))
+        (offx2 (sota-scale size (- 0.33) chrome-factor))
+        (offy2 (sota-scale size (- 0.25) chrome-factor))
+        (feather (sota-scale size 0.5 chrome-factor))
+        (brush-size (sota-scale size 0.5 chrome-factor))
+        (brush-name (car (gimp-brush-new "Chrome It")))
+        (mask (car (gimp-channel-new img width height "Chrome Stencil" 50 '(0 0 0))))
+        (bg-layer (car (gimp-layer-new img width height GRAY-IMAGE _"Background" 100 LAYER-MODE-NORMAL)))
+        (layer1 (car (gimp-layer-new img banding-width banding-height banding-type _"Layer 1" 100 LAYER-MODE-NORMAL)))
+        (layer2 (car (gimp-layer-new img width height GRAYA-IMAGE _"Layer 2" 100 LAYER-MODE-DIFFERENCE)))
+        (layer3 (car (gimp-layer-new img width height GRAYA-IMAGE _"Layer 3" 100 LAYER-MODE-NORMAL)))
+        (shadow (car (gimp-layer-new img width height GRAYA-IMAGE _"Drop Shadow" 100 LAYER-MODE-NORMAL)))
+        (mask-fs 0)
+        (layer-mask 0)
+        )
+
+    (gimp-context-push)
+    (gimp-context-set-defaults)
+
+    (gimp-image-undo-disable img)
+
+    (gimp-image-insert-channel img mask -1 0)
+    (gimp-image-insert-layer img bg-layer 0 0)
+    (gimp-image-insert-layer img shadow 0 0)
+    (gimp-image-insert-layer img layer3 0 0)
+    (gimp-image-insert-layer img layer2 0 0)
+
+    (gimp-edit-copy mask-drawable)
+    (set! mask-fs (car (gimp-edit-paste mask FALSE)))
+    (gimp-floating-sel-anchor mask-fs)
+    (if (= carve-white FALSE)
+        (gimp-drawable-invert mask FALSE)
+    )
+
+    (gimp-context-set-background '(255 255 255))
+    (gimp-selection-none img)
+    (gimp-drawable-edit-fill layer2 FILL-BACKGROUND)
+    (gimp-drawable-edit-fill layer3 FILL-BACKGROUND)
+    (gimp-drawable-edit-clear shadow)
+
+    (gimp-item-set-visible bg-layer FALSE)
+    (gimp-item-set-visible shadow FALSE)
+
+    (gimp-image-select-item img CHANNEL-OP-REPLACE mask)
+    (gimp-context-set-background '(0 0 0))
+    (gimp-selection-translate img offx1 offy1)
+    (gimp-selection-feather img feather)
+    (gimp-drawable-edit-fill layer2 FILL-BACKGROUND)
+    (gimp-selection-translate img (* 2 offx2) (* 2 offy2))
+    (gimp-drawable-edit-fill layer3 FILL-BACKGROUND)
+    (gimp-selection-none img)
+    (set! layer2 (car (gimp-image-merge-visible-layers img CLIP-TO-IMAGE)))
+    (gimp-drawable-invert layer2 FALSE)
+
+    (gimp-image-insert-layer img layer1 0 0)
+    (copy-layer-chrome-it img layer1 banding-img banding-layer)
+    (gimp-image-delete banding-img)
+    (gimp-layer-scale layer1 width height FALSE)
+    (plug-in-gauss-iir RUN-NONINTERACTIVE img layer1 10 TRUE TRUE)
+    (gimp-layer-set-opacity layer1 50)
+    (set! layer1 (car (gimp-image-merge-visible-layers img CLIP-TO-IMAGE)))
+    (gimp-drawable-curves-spline layer1 HISTOGRAM-VALUE 18 (spline-chrome-it))
+
+    (set! layer-mask (car (gimp-layer-create-mask layer1 ADD-MASK-BLACK)))
+    (gimp-layer-add-mask layer1 layer-mask)
+    (gimp-image-select-item img CHANNEL-OP-REPLACE mask)
+    (gimp-context-set-background '(255 255 255))
+    (gimp-drawable-edit-fill layer-mask FILL-BACKGROUND)
+
+    (set! layer2 (car (gimp-layer-copy layer1 TRUE)))
+    (gimp-image-insert-layer img layer2 0 0)
+
+    (gimp-brush-set-shape brush-name BRUSH-GENERATED-CIRCLE)
+    (gimp-brush-set-spikes brush-name 2)
+    (gimp-brush-set-hardness brush-name 1.0)
+    (gimp-brush-set-spacing brush-name 25)
+    (gimp-brush-set-aspect-ratio brush-name 1)
+    (gimp-brush-set-angle brush-name 0)
+    (cond (<= brush-size 17) (gimp-brush-set-radius brush-name (\ brush-size 2))
+	  (else gimp-brush-set-radius brush-name (\ 19 2)))
+    (gimp-context-set-brush brush-name)
+
+    (gimp-context-set-foreground '(255 255 255))
+    (gimp-drawable-edit-stroke-selection layer-mask)
+
+    (gimp-context-set-background '(0 0 0))
+    (gimp-selection-feather img (* feather 1.5))
+    (gimp-selection-translate img (* 2.5 offx1) (* 2.5 offy1))
+    (gimp-drawable-edit-fill shadow FILL-BACKGROUND)
+
+    (gimp-selection-all img)
+    (gimp-context-set-pattern "Marble #1")
+    (gimp-drawable-edit-fill bg-layer FILL-PATTERN)
+    (gimp-selection-none img)
+
+    (gimp-image-convert-rgb img)
+
+    (gimp-drawable-color-balance layer1 TRANSFER-SHADOWS TRUE
+				 (shadows (rval hc))
+				 (shadows (gval hc))
+				 (shadows (bval hc)))
+    (gimp-drawable-color-balance layer1 TRANSFER-MIDTONES TRUE
+				 (midtones (rval hc))
+				 (midtones (gval hc))
+				 (midtones (bval hc)))
+    (gimp-drawable-color-balance layer1 TRANSFER-HIGHLIGHTS TRUE
+				 (highlights (rval hc))
+				 (highlights (gval hc))
+				 (highlights (bval hc)))
+
+    (gimp-drawable-color-balance layer2 TRANSFER-SHADOWS TRUE
+				 (shadows (rval cc))
+				 (shadows (gval cc))
+				 (shadows (bval cc)))
+    (gimp-drawable-color-balance layer2 TRANSFER-MIDTONES TRUE
+				 (midtones (rval cc))
+				 (midtones (gval cc))
+				 (midtones (bval cc)))
+    (gimp-drawable-color-balance layer2 TRANSFER-HIGHLIGHTS TRUE
+				 (highlights (rval cc))
+				 (highlights (gval cc))
+				 (highlights (bval cc)))
+    (gimp-drawable-hue-saturation layer2 HUE-RANGE-ALL
+				  0.0
+				  chrome-lightness
+				  chrome-saturation
+				  0.0)
+
+    (gimp-item-set-visible shadow TRUE)
+    (gimp-item-set-visible bg-layer TRUE)
+
+    (gimp-item-set-name layer2 _"Chrome")
+    (gimp-item-set-name layer1 _"Highlight")
+
+    (gimp-image-remove-channel img mask)
+
+    (gimp-brush-delete brush-name)
+
+    (gimp-display-new img)
+    (gimp-image-undo-enable img)
+
+    (gimp-context-pop)
+  )
+)
+
+(script-fu-register "script-fu-sota-chrome-it"
+  _"Stencil C_hrome..."
+  _"Add a chrome effect to the selected region (or alpha) using a specified (grayscale) stencil"
+  "Spencer Kimball"
+  "Spencer Kimball"
+  "1997"
+  "GRAY"
+  SF-IMAGE       "Chrome image"      0
+  SF-DRAWABLE    "Chrome mask"       0
+  SF-ADJUSTMENT _"Chrome saturation" '(-80 -100 100 1 10 0 0)
+  SF-ADJUSTMENT _"Chrome lightness"  '(-47 -100 100 1 10 0 0)
+  SF-ADJUSTMENT _"Chrome factor"     '(0.75 0 1 0.1 0.01 2 0)
+  SF-FILENAME   _"Environment map"
+                (string-append gimp-data-directory
+                              "/scripts/images/beavis.jpg")
+  SF-COLOR      _"Highlight balance"  '(211 95 0)
+  SF-COLOR      _"Chrome balance"     "black"
+  SF-TOGGLE     _"Chrome white areas" TRUE
+)
+
+(script-fu-menu-register "script-fu-sota-chrome-it"
+                         "<Image>/Filters/Decor")
diff --git a/plug-ins/script-fu/scripts/circuit.scm b/plug-ins/script-fu/scripts/circuit.scm
new file mode 100644
index 0000000..174a155
--- /dev/null
+++ b/plug-ins/script-fu/scripts/circuit.scm
@@ -0,0 +1,143 @@
+; GIMP - The GNU Image Manipulation Program
+; Copyright (C) 1995 Spencer Kimball and Peter Mattis
+;
+; Circuit board effect
+; Copyright (c) 1997 Adrian Likins
+;
+; Generates what looks a little like the back of an old circuit board.
+; Looks even better when gradient-mapp'ed with a suitable gradient.
+;
+; This program is free software: you can redistribute it and/or modify
+; it under the terms of the GNU General Public License as published by
+; the Free Software Foundation; either version 3 of the License, or
+; (at your option) any later version.
+;
+; This program is distributed in the hope that it will be useful,
+; but WITHOUT ANY WARRANTY; without even the implied warranty of
+; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+; GNU General Public License for more details.
+;
+; You should have received a copy of the GNU General Public License
+; along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+
+(define (script-fu-circuit image
+                           drawable
+                           mask-size
+                           seed
+                           remove-bg
+                           keep-selection
+                           separate-layer)
+  (let* (
+        (type (car (gimp-drawable-type-with-alpha drawable)))
+        (image-width (car (gimp-image-width image)))
+        (image-height (car (gimp-image-height image)))
+        (active-selection 0)
+        (from-selection 0)
+        (selection-bounds 0)
+        (select-offset-x 0)
+        (select-offset-y 0)
+        (select-width 0)
+        (select-height 0)
+        (effect-layer 0)
+        (active-layer 0)
+        )
+
+    (gimp-context-push)
+    (gimp-context-set-defaults)
+
+    (gimp-image-undo-group-start image)
+
+    (gimp-layer-add-alpha drawable)
+
+    (if (= (car (gimp-selection-is-empty image)) TRUE)
+        (begin
+          (gimp-image-select-item image CHANNEL-OP-REPLACE drawable)
+          (set! active-selection (car (gimp-selection-save image)))
+          (set! from-selection FALSE))
+        (begin
+          (set! from-selection TRUE)
+          (set! active-selection (car (gimp-selection-save image)))))
+
+    (set! selection-bounds (gimp-selection-bounds image))
+    (set! select-offset-x (cadr selection-bounds))
+    (set! select-offset-y (caddr selection-bounds))
+    (set! select-width (- (cadr (cddr selection-bounds)) select-offset-x))
+    (set! select-height (- (caddr (cddr selection-bounds)) select-offset-y))
+
+    (if (= separate-layer TRUE)
+        (begin
+          (set! effect-layer (car (gimp-layer-new image
+                                                  select-width
+                                                  select-height
+                                                  type
+                                                  _"Effect layer"
+                                                  100
+                                                  LAYER-MODE-NORMAL)))
+
+          (gimp-image-insert-layer image effect-layer 0 -1)
+          (gimp-layer-set-offsets effect-layer select-offset-x select-offset-y)
+          (gimp-selection-none image)
+          (gimp-drawable-edit-clear effect-layer)
+          (gimp-image-select-item image CHANNEL-OP-REPLACE active-selection)
+          (gimp-edit-copy drawable)
+
+          (let ((floating-sel (car (gimp-edit-paste effect-layer FALSE))))
+            (gimp-floating-sel-anchor floating-sel)
+            )
+          (gimp-image-set-active-layer image effect-layer ))
+          (set! effect-layer drawable)
+    )
+    (set! active-layer effect-layer)
+
+    (if (= remove-bg TRUE)
+        (gimp-context-set-foreground '(0 0 0))
+        (gimp-context-set-foreground '(14 14 14))
+    )
+
+    (gimp-image-select-item image CHANNEL-OP-REPLACE active-selection)
+    (plug-in-maze RUN-NONINTERACTIVE image active-layer 5 5 TRUE 0 seed 57 1)
+    (plug-in-oilify RUN-NONINTERACTIVE image active-layer mask-size 0)
+    (plug-in-edge RUN-NONINTERACTIVE image active-layer 2 1 0)
+    (if (= type RGBA-IMAGE)
+      (gimp-drawable-desaturate active-layer DESATURATE-LIGHTNESS))
+
+    (if (and
+         (= remove-bg TRUE)
+         (= separate-layer TRUE))
+        (begin
+          (gimp-image-select-color image CHANNEL-OP-REPLACE active-layer '(0 0 0))
+          (gimp-drawable-edit-clear active-layer)))
+
+    (if (= keep-selection FALSE)
+        (gimp-selection-none image))
+
+    (gimp-image-remove-channel image active-selection)
+    (gimp-image-set-active-layer image drawable)
+
+    (gimp-image-undo-group-end image)
+
+    (gimp-displays-flush)
+
+    (gimp-context-pop)
+  )
+)
+
+(script-fu-register "script-fu-circuit"
+  _"_Circuit..."
+  _"Fill the selected region (or alpha) with traces like those on a circuit board"
+  "Adrian Likins <adrian@gimp.org>"
+  "Adrian Likins"
+  "10/17/97"
+  "RGB* GRAY*"
+  SF-IMAGE      "Image"             0
+  SF-DRAWABLE   "Drawable"          0
+  SF-ADJUSTMENT _"Oilify mask size" '(17 3 50 1 10 0 1)
+  SF-ADJUSTMENT _"Circuit seed"     '(3 1 3000000 1 10 0 1)
+  SF-TOGGLE     _"No background (only for separate layer)" FALSE
+  SF-TOGGLE     _"Keep selection"   TRUE
+  SF-TOGGLE     _"Separate layer"   TRUE
+)
+
+(script-fu-menu-register "script-fu-circuit"
+                         "<Image>/Filters/Render")
diff --git a/plug-ins/script-fu/scripts/clothify.scm b/plug-ins/script-fu/scripts/clothify.scm
new file mode 100644
index 0000000..7b6f101
--- /dev/null
+++ b/plug-ins/script-fu/scripts/clothify.scm
@@ -0,0 +1,68 @@
+; CLOTHIFY version 1.02
+; Gives the current layer in the indicated image a cloth-like texture.
+; Process invented by Zach Beane (Xath@irc.gimp.net)
+;
+; Tim Newsome <drz@froody.bloke.com> 4/11/97
+
+(define (script-fu-clothify timg tdrawable bx by azimuth elevation depth)
+  (let* (
+        (width (car (gimp-drawable-width tdrawable)))
+        (height (car (gimp-drawable-height tdrawable)))
+        (img (car (gimp-image-new width height RGB)))
+;       (layer-two (car (gimp-layer-new img width height RGB-IMAGE "Y Dots" 100 LAYER-MODE-MULTIPLY)))
+        (layer-one (car (gimp-layer-new img width height RGB-IMAGE "X Dots" 100 LAYER-MODE-NORMAL)))
+        (layer-two 0)
+        (bump-layer 0)
+        )
+
+    (gimp-context-push)
+    (gimp-context-set-defaults)
+
+    (gimp-image-undo-disable img)
+
+    (gimp-image-insert-layer img layer-one 0 0)
+
+    (gimp-context-set-background '(255 255 255))
+    (gimp-drawable-edit-fill layer-one FILL-BACKGROUND)
+
+    (plug-in-noisify RUN-NONINTERACTIVE img layer-one FALSE 0.7 0.7 0.7 0.7)
+
+    (set! layer-two (car (gimp-layer-copy layer-one 0)))
+    (gimp-layer-set-mode layer-two LAYER-MODE-MULTIPLY)
+    (gimp-image-insert-layer img layer-two 0 0)
+
+    (plug-in-gauss-rle RUN-NONINTERACTIVE img layer-one bx TRUE FALSE)
+    (plug-in-gauss-rle RUN-NONINTERACTIVE img layer-two by FALSE TRUE)
+    (gimp-image-flatten img)
+    (set! bump-layer (car (gimp-image-get-active-layer img)))
+
+    (plug-in-c-astretch RUN-NONINTERACTIVE img bump-layer)
+    (plug-in-noisify RUN-NONINTERACTIVE img bump-layer FALSE 0.2 0.2 0.2 0.2)
+
+    (plug-in-bump-map RUN-NONINTERACTIVE img tdrawable bump-layer azimuth elevation depth 0 0 0 0 FALSE FALSE 0)
+    (gimp-image-delete img)
+    (gimp-displays-flush)
+
+    (gimp-context-pop)
+  )
+)
+
+
+(script-fu-register "script-fu-clothify"
+  _"_Clothify..."
+  _"Add a cloth-like texture to the selected region (or alpha)"
+  "Tim Newsome <drz@froody.bloke.com>"
+  "Tim Newsome"
+  "4/11/97"
+  "RGB* GRAY*"
+  SF-IMAGE       "Input image"    0
+  SF-DRAWABLE    "Input drawable" 0
+  SF-ADJUSTMENT _"Blur X"         '(9 3 100 1 10 0 1)
+  SF-ADJUSTMENT _"Blur Y"         '(9 3 100 1 10 0 1)
+  SF-ADJUSTMENT _"Azimuth"        '(135 0 360 1 10 1 0)
+  SF-ADJUSTMENT _"Elevation"      '(45 0 90 1 10 1 0)
+  SF-ADJUSTMENT _"Depth"          '(3 1 50 1 10 0 1)
+)
+
+(script-fu-menu-register "script-fu-clothify"
+                         "<Image>/Filters/Artistic")
diff --git a/plug-ins/script-fu/scripts/coffee.scm b/plug-ins/script-fu/scripts/coffee.scm
new file mode 100644
index 0000000..d72bcb7
--- /dev/null
+++ b/plug-ins/script-fu/scripts/coffee.scm
@@ -0,0 +1,94 @@
+; Chris Gutteridge (cjg@ecs.soton.ac.uk)
+; At ECS Dept, University of Southampton, England.
+
+; This program is free software: you can redistribute it and/or modify
+; it under the terms of the GNU General Public License as published by
+; the Free Software Foundation; either version 3 of the License, or
+; (at your option) any later version.
+;
+; This program is distributed in the hope that it will be useful,
+; but WITHOUT ANY WARRANTY; without even the implied warranty of
+; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+; GNU General Public License for more details.
+;
+; You should have received a copy of the GNU General Public License
+; along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+
+(define (script-fu-coffee-stain inImage inLayer inNumber inDark)
+  (let* (
+        (theImage inImage)
+        (theHeight (car (gimp-image-height theImage)))
+        (theWidth (car (gimp-image-width theImage)))
+        (theNumber inNumber)
+        (theSize (min theWidth theHeight))
+        (theStain 0)
+        )
+
+    (gimp-context-push)
+    (gimp-context-set-defaults)
+
+    (gimp-image-undo-group-start theImage)
+
+    (while (> theNumber 0)
+      (set! theNumber (- theNumber 1))
+      (set! theStain (car (gimp-layer-new theImage theSize theSize
+                                          RGBA-IMAGE _"Stain" 100
+                                          (if (= inDark TRUE)
+                                              LAYER-MODE-DARKEN-ONLY LAYER-MODE-NORMAL))))
+
+      (gimp-image-insert-layer theImage theStain 0 0)
+      (gimp-selection-all theImage)
+      (gimp-drawable-edit-clear theStain)
+
+      (let ((blobSize (/ (rand (- theSize 40)) (+ (rand 3) 1))))
+        (gimp-image-select-ellipse theImage
+				   CHANNEL-OP-REPLACE
+				   (/ (- theSize blobSize) 2)
+				   (/ (- theSize blobSize) 2)
+				   blobSize blobSize)
+      )
+
+      (script-fu-distress-selection theImage theStain
+                                    (- (* (+ (rand 15) 1) (+ (rand 15) 1)) 1)
+                                    (/ theSize 25) 4 2 TRUE TRUE)
+
+      (gimp-context-set-gradient "Coffee")
+
+      (gimp-drawable-edit-gradient-fill theStain
+					GRADIENT-SHAPEBURST-DIMPLED 0
+					FALSE 0 0
+					TRUE
+					0 0 0 0)
+
+      (gimp-layer-set-offsets theStain
+                              (- (rand theWidth) (/ theSize 2))
+                              (- (rand theHeight) (/ theSize 2)))
+    )
+
+    (gimp-selection-none theImage)
+
+    (gimp-image-undo-group-end theImage)
+
+    (gimp-displays-flush)
+
+    (gimp-context-pop)
+  )
+)
+
+; Register the function with GIMP:
+
+(script-fu-register "script-fu-coffee-stain"
+  _"_Coffee Stain..."
+  _"Add realistic looking coffee stains to the image"
+  "Chris Gutteridge"
+  "1998, Chris Gutteridge / ECS dept, University of Southampton, England."
+  "25th April 1998"
+  "RGB*"
+  SF-IMAGE       "The image"   0
+  SF-DRAWABLE    "The layer"   0
+  SF-ADJUSTMENT _"Stains"      '(3 1 10 1 1 0 0)
+  SF-TOGGLE     _"Darken only" TRUE
+)
+
+(script-fu-menu-register "script-fu-coffee-stain" "<Image>/Filters/Decor")
diff --git a/plug-ins/script-fu/scripts/contactsheet.scm b/plug-ins/script-fu/scripts/contactsheet.scm
new file mode 100644
index 0000000..5f7520e
--- /dev/null
+++ b/plug-ins/script-fu/scripts/contactsheet.scm
@@ -0,0 +1,337 @@
+; "Contact Sheet" v1.2 September 5, 2007
+; by Kevin Cozens <kcozens@interlog.com>
+;
+; GIMP - The GNU Image Manipulation Program
+; Copyright (C) 1995 Spencer Kimball and Peter Mattis
+;
+; This program is free software: you can redistribute it and/or modify
+; it under the terms of the GNU General Public License as published by
+; the Free Software Foundation; either version 3 of the License, or
+; (at your option) any later version.
+;
+; This program is distributed in the hope that it will be useful,
+; but WITHOUT ANY WARRANTY; without even the implied warranty of
+; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+; GNU General Public License for more details.
+;
+; You should have received a copy of the GNU General Public License
+; along with this program.  If not, see <https://www.gnu.org/licenses/>.
+;
+; Version 1.0 (July 27, 2004)
+; Created
+;
+; Version 1.1 (September 2, 2004)
+; Added ability to select sheet size, set font used for sheet and image
+;
+; Version 1.2 (September 5, 2007)
+; Preserve aspect ratio of original image. Center thumbnail in the area
+; allowed for the thumbnail. Added disable/enable of undo operations.
+; Added 1600x1200 sheet size.
+
+(define (script-fu-contactsheet dir sheet-size
+         title-font legend-font text-color bg-color)
+
+  (define (init-sheet-data size)
+    (let (
+         (sheet-w 0)
+         (sheet-h 0)
+         (thumb-w 0)
+         (thumb-h 0)
+         (border-x 0) ;Space between rows and at top and bottom of thumbnails
+         (border-y 0) ;Space between columns and at left and right of thumbnails
+         (off-x 0)  ; Additional X shift to properly center a row of thumbnails
+         (off-y 0)  ; Additional Y shift to properly center rows of thumbnails
+         (count 0)
+         )
+
+      (case size
+        ((0) (set! sheet-w 640)
+             (set! sheet-h 480)
+             (set! thumb-w 90)
+             (set! thumb-h 68)
+             (set! border-x 32)
+             (set! border-y 23)
+             (set! off-x -1)
+             (set! off-y 0)
+             (set! count 4)
+        )
+
+        ((1) (set! sheet-w 800)
+             (set! sheet-h 600)
+             (set! thumb-w 119)
+             (set! thumb-h 90)
+             (set! border-x 34)
+             (set! border-y 25)
+             (set! off-x 0)
+             (set! off-y 0)
+             (set! count 4)
+        )
+
+        ((2) (set! sheet-w 1024)
+             (set! sheet-h 768)
+             (set! thumb-w 133)
+             (set! thumb-h 100)
+             (set! border-x 32)
+             (set! border-y 24)
+             (set! off-x 1)
+             (set! off-y 0)
+             (set! count 5)
+        )
+
+        ((3) (set! sheet-w 1280)
+             (set! sheet-h 1024)
+             (set! thumb-w 133)
+             (set! thumb-h 100)
+             (set! border-x 24)
+             (set! border-y 25)
+             (set! off-x 0)
+             (set! off-y 0)
+             (set! count 7)
+        )
+
+        ((4) (set! sheet-w 1600)
+             (set! sheet-h 1200)
+             (set! thumb-w 120)
+             (set! thumb-h 90)
+             (set! border-x 36)
+             (set! border-y 25)
+             (set! off-x 2)
+             (set! off-y 0)
+             (set! count 9)
+        )
+      )
+
+      (list sheet-w sheet-h thumb-w thumb-h border-x border-y off-x off-y count)
+    )
+  )
+
+  (define (init-sheet-img img num img-width border-y off-y)
+    (let* (
+          (text-layer 0)
+          (text-width 0)
+          (text-height 0)
+          )
+      (gimp-selection-all img)
+      (gimp-drawable-fill (car (gimp-image-get-active-layer img))
+                          FILL-BACKGROUND)
+      (gimp-selection-none img)
+      (set! text-layer (car (gimp-text-fontname img -1 0 0
+                              (string-append _"Contact Sheet "
+                                             (number->string num)
+                                             _" for directory " dir)
+                                             0 TRUE 14 PIXELS title-font)))
+      (set! text-width (car (gimp-drawable-width text-layer)))
+      (set! text-height (car (gimp-drawable-height text-layer)))
+      (gimp-layer-set-offsets text-layer
+        (/ (- img-width text-width) 2)
+        (/ (- (+ border-y off-y) text-height) 2)
+      )
+      (gimp-image-merge-visible-layers img CLIP-TO-IMAGE)
+    )
+  )
+
+  (define (make-thumbnail-size img thumb-w thumb-h)
+    (let* (
+          (file-height (car (gimp-image-height img)))
+          (file-width  (car (gimp-image-width img)))
+          (aspect-ratio (/ file-width file-height))
+          )
+
+      ;Preserve the aspect ratio of the original image
+      (if (> file-width file-height)
+        (set! thumb-h (/ thumb-w aspect-ratio))
+        (set! thumb-w (* thumb-h aspect-ratio))
+      )
+
+      (gimp-image-scale img thumb-w thumb-h)
+    )
+  )
+
+  (let* (
+        (dir-stream (dir-open-stream dir))
+        (sheet-num 1)
+        (img-count 0)
+        (pos-x 0)
+        (pos-y 0)
+
+        (sheet-data 0)
+        (sheet-width 0)
+        (sheet-height 0)
+        (thumb-w 0)
+        (thumb-h 0)
+        (border-x 0)
+        (border-y 0)
+        (off-x 0)
+        (off-y 0)
+        (max-x 0)
+        (max-y 0)
+
+        (sheet-img 0)
+        (sheet-layer 0)
+
+        (new-img 0)
+        (file 0)
+        (file-path 0)
+        (tmp-layer 0)
+        )
+
+    (gimp-context-push)
+    (gimp-context-set-defaults)
+    (gimp-context-set-foreground text-color)
+    (gimp-context-set-background bg-color)
+
+    (set! sheet-data (init-sheet-data sheet-size))
+    (set! sheet-width (car sheet-data))
+    (set! sheet-height (cadr sheet-data))
+    (set! sheet-data (cddr sheet-data))
+    (set! thumb-w (car sheet-data))
+    (set! thumb-h (cadr sheet-data))
+    (set! sheet-data (cddr sheet-data))
+    (set! border-x (car sheet-data))
+    (set! border-y (cadr sheet-data))
+    (set! sheet-data (cddr sheet-data))
+    (set! off-x (car sheet-data))
+    (set! off-y (cadr sheet-data))
+    (set! max-x (caddr sheet-data))
+    (set! max-y max-x)
+
+    (set! sheet-img (car (gimp-image-new sheet-width sheet-height RGB)))
+
+    (gimp-image-undo-disable sheet-img)
+
+    (set! sheet-layer (car (gimp-layer-new sheet-img sheet-width sheet-height
+                            RGB-IMAGE "Background"
+                            100 LAYER-MODE-NORMAL)))
+    (gimp-image-insert-layer sheet-img sheet-layer 0 0)
+
+    (init-sheet-img sheet-img sheet-num sheet-width border-y off-y)
+
+    (if (not dir-stream)
+      (gimp-message (string-append _"Unable to open directory " dir))
+      (begin
+        (do
+          ( (file (dir-read-entry dir-stream) (dir-read-entry dir-stream)) )
+          ( (eof-object? file) )
+
+          (set! file-path (string-append dir DIR-SEPARATOR file))
+          (if (and (not (re-match "index.*" file))
+                   (= (file-type file-path) FILE-TYPE-FILE)
+              )
+            (catch ()
+              (set! new-img
+                    (car (gimp-file-load RUN-NONINTERACTIVE file-path file)))
+
+              (make-thumbnail-size new-img thumb-w thumb-h)
+
+              (if (> (car (gimp-image-get-layers new-img)) 1)
+                (gimp-image-flatten new-img)
+              )
+              (set! tmp-layer (car (gimp-layer-new-from-drawable
+                            (car (gimp-image-get-active-drawable new-img))
+                                  sheet-img)))
+
+              (gimp-image-insert-layer sheet-img tmp-layer 0 0)
+
+              ;Move thumbnail in to position and center it in area available.
+              (gimp-layer-set-offsets tmp-layer
+                (+ border-x off-x (* pos-x (+ thumb-w border-x))
+                   (/ (- thumb-w (car (gimp-image-width new-img))) 2)
+                )
+                (+ border-y off-y (* pos-y (+ thumb-h border-y))
+                   (/ (- thumb-h (car (gimp-image-height new-img))) 2)
+                )
+              )
+
+              (gimp-image-delete new-img)
+
+              (set! tmp-layer (car (gimp-text-fontname sheet-img -1 0 0 file
+                                     0 TRUE 12 PIXELS legend-font)))
+              (gimp-layer-set-offsets tmp-layer
+                (+ border-x off-x (* pos-x (+ thumb-w border-x))
+                   (/ (- thumb-w (car (gimp-drawable-width tmp-layer))) 2))
+                (+ border-y off-y (* pos-y (+ thumb-h border-y)) thumb-h 6)
+              )
+
+              (set! img-count (+ img-count 1))
+
+              (set! pos-x (+ pos-x 1))
+              (if (> pos-x max-x)
+                (begin
+                  (set! pos-x 0)
+                  (set! pos-y (+ pos-y 1))
+                  (if (> pos-y max-y)
+                    (begin
+                      (set! pos-y 0)
+                      (set! sheet-layer (car (gimp-image-flatten sheet-img)))
+                      (gimp-file-save
+                        RUN-NONINTERACTIVE
+                        sheet-img
+                        sheet-layer
+                        (string-append dir DIR-SEPARATOR
+                            "index" (number->string sheet-num) ".jpg")
+                        (string-append
+                            "index" (number->string sheet-num) ".jpg")
+                      )
+
+                      (set! sheet-num (+ sheet-num 1))
+                      (init-sheet-img sheet-img sheet-num sheet-width
+                                      border-y off-y)
+                      (set! img-count 0)
+                    )
+                  )
+                )
+              )
+            )
+          )
+        )
+
+        (dir-close-stream dir-stream)
+
+        (if (> img-count 0)
+          (begin
+            (set! sheet-layer (car (gimp-image-flatten sheet-img)))
+            (gimp-file-save
+              RUN-NONINTERACTIVE
+              sheet-img
+              sheet-layer
+              (string-append dir DIR-SEPARATOR
+                  "index" (number->string sheet-num) ".jpg")
+              (string-append "index" (number->string sheet-num) ".jpg")
+            )
+          )
+        )
+      )
+
+      (gimp-image-undo-enable sheet-img)
+      (gimp-image-delete sheet-img)
+
+      (display (string-append _"Created " (number->string sheet-num)
+                              _" contact sheets from a total of "
+                              (number->string img-count) _" images"))
+      (newline)
+    )
+
+    (gimp-context-pop)
+  )
+)
+
+(script-fu-register "script-fu-contactsheet"
+    _"_Contact Sheet..."
+    _"Create a series of images containing thumbnail sized versions of all of the images in a specified directory."
+    "Kevin Cozens <kcozens@interlog.com>"
+    "Kevin Cozens"
+    "July 19, 2004"
+    ""
+    SF-DIRNAME _"Images Directory" "/tmp/test"
+    SF-OPTION  _"Sheet size"       '("640 x 480"
+                                     "800 x 600"
+                                     "1024 x 768"
+                                     "1280 x 1024"
+                                     "1600 x 1200")
+    SF-FONT    _"Title font"       "Sans Bold Italic"
+    SF-FONT    _"Legend font"      "Sans Bold"
+    SF-COLOR   _"Text color"       "white"
+    SF-COLOR   _"Background color" "black"
+)
+
+(script-fu-menu-register "script-fu-contactsheet" "<Image>/Filters/Combine")
diff --git a/plug-ins/script-fu/scripts/copy-visible.scm b/plug-ins/script-fu/scripts/copy-visible.scm
new file mode 100644
index 0000000..942793c
--- /dev/null
+++ b/plug-ins/script-fu/scripts/copy-visible.scm
@@ -0,0 +1,49 @@
+; GIMP - The GNU Image Manipulation Program
+; Copyright (C) 1995 Spencer Kimball and Peter Mattis
+;
+; "Copy Visible" -- copy the visible selection so that it can be pasted easily
+; Copyright (C) 2004 Raphaël Quinet, Adrian Likins, Sven Neumann
+;
+; This program is free software: you can redistribute it and/or modify
+; it under the terms of the GNU General Public License as published by
+; the Free Software Foundation; either version 3 of the License, or
+; (at your option) any later version.
+;
+; This program is distributed in the hope that it will be useful,
+; but WITHOUT ANY WARRANTY; without even the implied warranty of
+; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+; GNU General Public License for more details.
+;
+; You should have received a copy of the GNU General Public License
+; along with this program.  If not, see <https://www.gnu.org/licenses/>.
+;
+; 2004-04-14 This script was almost rewritten from scratch
+;     by Raphaël Quinet <raphael@gimp.org>
+;     see also http://bugzilla.gnome.org/show_bug.cgi?id=139989
+;
+; The code is new but the API is the same as in the previous version:
+; "Copy Visible"  version 0.11 01/24/98
+;     by Adrian Likins <adrian@gimp.org>
+;   _heavily_ based on:
+;        cyn-merge.scm   version 0.02   10/10/97
+;        Copyright (C) 1997 Sven Neumann (neumanns@uni-duesseldorf.de)
+;
+; Removed all code and made it a backward-compat wrapper around
+;     (gimp-edit-copy-visible)
+;     2004-12-12 Michael Natterer <mitch@gimp.org>
+;
+
+(define (script-fu-copy-visible image drawable)
+  (gimp-edit-copy-visible image)
+)
+
+(script-fu-register "script-fu-copy-visible"
+  "Copy Visible"
+  "This procedure is deprecated! Use \'gimp-edit-copy-visible\' instead."
+  ""
+  ""
+  ""
+  "RGB* INDEXED* GRAY*"
+  SF-IMAGE    "Image"    0
+  SF-DRAWABLE "Drawable" 0
+)
diff --git a/plug-ins/script-fu/scripts/difference-clouds.scm b/plug-ins/script-fu/scripts/difference-clouds.scm
new file mode 100644
index 0000000..15b8fc8
--- /dev/null
+++ b/plug-ins/script-fu/scripts/difference-clouds.scm
@@ -0,0 +1,80 @@
+; Plugin for the GNU Image Manipulation Program
+; Copyright (C) 2006 Martin Nordholts
+;
+; This program is free software: you can redistribute it and/or modify
+; it under the terms of the GNU General Public License as published by
+; the Free Software Foundation; either version 3 of the License, or
+; (at your option) any later version.
+;
+; This program is distributed in the hope that it will be useful,
+; but WITHOUT ANY WARRANTY; without even the implied warranty of
+; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+; GNU General Public License for more details.
+;
+; You should have received a copy of the GNU General Public License
+; along with this program.  If not, see <https://www.gnu.org/licenses/>.
+;
+; Renders Difference Clouds onto a layer, i.e. solid noise merged down with the
+; Difference Mode
+;
+
+(define (script-fu-difference-clouds image
+                                     drawable)
+
+  (let* ((draw-offset-x (car (gimp-drawable-offsets drawable)))
+         (draw-offset-y (cadr (gimp-drawable-offsets drawable)))
+         (has-sel       (car (gimp-drawable-mask-intersect drawable)))
+         (sel-offset-x  (cadr (gimp-drawable-mask-intersect drawable)))
+         (sel-offset-y  (caddr (gimp-drawable-mask-intersect drawable)))
+         (width         (cadddr (gimp-drawable-mask-intersect drawable)))
+         (height        (caddr (cddr (gimp-drawable-mask-intersect drawable))))
+         (type          (car (gimp-drawable-type-with-alpha drawable)))
+         (diff-clouds  -1)
+         (offset-x      0)
+         (offset-y      0)
+        )
+
+    (gimp-image-undo-group-start image)
+
+    ; Create the cloud layer
+    (set! diff-clouds (car (gimp-layer-new image width height type
+                                             "Clouds" 100 LAYER-MODE-DIFFERENCE)))
+
+    ; Add the cloud layer above the current layer
+    (gimp-image-insert-layer image diff-clouds 0 -1)
+
+    ; Clear the layer (so there are no noise in it)
+    (gimp-drawable-fill diff-clouds FILL-TRANSPARENT)
+
+    ; Selections are relative to the drawable; adjust the final offset
+    (set! offset-x (+ draw-offset-x sel-offset-x))
+    (set! offset-y (+ draw-offset-y sel-offset-y))
+
+    ; Offset the clouds layer
+    (if (gimp-item-is-layer drawable)
+      (gimp-item-transform-translate diff-clouds offset-x offset-y))
+
+    ; Show the solid noise dialog
+    (plug-in-solid-noise SF-RUN-MODE image diff-clouds 0 0 0 1 4.0 4.0)
+
+    ; Merge the clouds layer with the layer below
+    (gimp-image-merge-down image diff-clouds EXPAND-AS-NECESSARY)
+
+    (gimp-image-undo-group-end image)
+
+    (gimp-displays-flush)
+  )
+)
+
+(script-fu-register "script-fu-difference-clouds"
+                    _"_Difference Clouds..."
+                    _"Solid noise applied with Difference layer mode"
+                    "Martin Nordholts <enselic@hotmail.com>"
+                    "Martin Nordholts"
+                    "2006/10/25"
+                    "RGB* GRAY*"
+                    SF-IMAGE       "Image"           0
+                    SF-DRAWABLE    "Drawable"        0)
+
+(script-fu-menu-register "script-fu-difference-clouds"
+			 "<Image>/Filters/Render/Noise")
diff --git a/plug-ins/script-fu/scripts/distress-selection.scm b/plug-ins/script-fu/scripts/distress-selection.scm
new file mode 100644
index 0000000..ef87b79
--- /dev/null
+++ b/plug-ins/script-fu/scripts/distress-selection.scm
@@ -0,0 +1,122 @@
+;
+; distress selection
+;
+;
+; Chris Gutteridge (cjg@ecs.soton.ac.uk)
+; At ECS Dept, University of Southampton, England.
+
+; This program is free software: you can redistribute it and/or modify
+; it under the terms of the GNU General Public License as published by
+; the Free Software Foundation; either version 3 of the License, or
+; (at your option) any later version.
+;
+; This program is distributed in the hope that it will be useful,
+; but WITHOUT ANY WARRANTY; without even the implied warranty of
+; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+; GNU General Public License for more details.
+;
+; You should have received a copy of the GNU General Public License
+; along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+; Define the function:
+
+(define (script-fu-distress-selection inImage
+                                      inDrawable
+                                      inThreshold
+                                      inSpread
+                                      inGranu
+                                      inSmooth
+                                      inSmoothH
+                                      inSmoothV)
+
+  (let (
+       (theImage inImage)
+       (theWidth (car (gimp-image-width inImage)))
+       (theHeight (car (gimp-image-height inImage)))
+       (theLayer 0)
+       (theMode (car (gimp-image-base-type inImage)))
+       (prevLayer (car (gimp-image-get-active-layer inImage)))
+       )
+
+    (gimp-context-push)
+    (gimp-context-set-defaults)
+    (gimp-image-undo-group-start theImage)
+
+    (if (= theMode GRAY)
+      (set! theMode GRAYA-IMAGE)
+      (set! theMode RGBA-IMAGE)
+    )
+    (set! theLayer (car (gimp-layer-new theImage
+                                        theWidth
+                                        theHeight
+                                        theMode
+                                        "Distress Scratch Layer"
+                                        100
+                                        LAYER-MODE-NORMAL)))
+
+    (gimp-image-insert-layer theImage theLayer 0 0)
+
+    (if (= FALSE (car (gimp-selection-is-empty theImage)))
+        (gimp-drawable-edit-fill theLayer FILL-BACKGROUND)
+    )
+
+    (gimp-selection-invert theImage)
+
+    (if (= FALSE (car (gimp-selection-is-empty theImage)))
+        (gimp-drawable-edit-clear theLayer)
+    )
+
+    (gimp-selection-invert theImage)
+    (gimp-selection-none inImage)
+
+    (gimp-layer-scale theLayer
+                      (/ theWidth inGranu)
+                      (/ theHeight inGranu)
+                      TRUE)
+
+    (plug-in-spread RUN-NONINTERACTIVE
+                    theImage
+                    theLayer
+                    inSpread
+                    inSpread)
+
+    (plug-in-gauss-iir RUN-NONINTERACTIVE
+           theImage theLayer inSmooth inSmoothH inSmoothV)
+    (gimp-layer-scale theLayer theWidth theHeight TRUE)
+    (plug-in-threshold-alpha RUN-NONINTERACTIVE theImage theLayer inThreshold)
+    (plug-in-gauss-iir RUN-NONINTERACTIVE theImage theLayer 1 TRUE TRUE)
+    (gimp-image-select-item inImage CHANNEL-OP-REPLACE theLayer)
+    (gimp-image-remove-layer theImage theLayer)
+    (if (and (= (car (gimp-item-is-channel inDrawable)) TRUE)
+             (= (car (gimp-item-is-layer-mask inDrawable)) FALSE))
+      (gimp-image-set-active-channel theImage inDrawable)
+      )
+    (gimp-image-undo-group-end theImage)
+
+    (gimp-image-set-active-layer theImage prevLayer)
+
+    (gimp-displays-flush)
+    (gimp-context-pop)
+  )
+)
+
+
+(script-fu-register "script-fu-distress-selection"
+  _"_Distort..."
+  _"Distress the selection"
+  "Chris Gutteridge"
+  "1998, Chris Gutteridge / ECS dept, University of Southampton, England."
+  "23rd April 1998"
+  "RGB*,GRAY*"
+  SF-IMAGE       "The image"              0
+  SF-DRAWABLE    "The layer"              0
+  SF-ADJUSTMENT _"_Threshold (bigger 1<-->254 smaller)" '(127 1 254 1 10 0 0)
+  SF-ADJUSTMENT _"_Spread"                 '(8 0 1000 1 10 0 1)
+  SF-ADJUSTMENT _"_Granularity (1 is low)" '(4 1 25 1 10 0 1)
+  SF-ADJUSTMENT _"S_mooth"                 '(2 1 150 1 10 0 1)
+  SF-TOGGLE     _"Smooth hor_izontally"    TRUE
+  SF-TOGGLE     _"Smooth _vertically"      TRUE
+)
+
+(script-fu-menu-register "script-fu-distress-selection"
+                         "<Image>/Select/Modify")
diff --git a/plug-ins/script-fu/scripts/drop-shadow.scm b/plug-ins/script-fu/scripts/drop-shadow.scm
new file mode 100644
index 0000000..c1b243a
--- /dev/null
+++ b/plug-ins/script-fu/scripts/drop-shadow.scm
@@ -0,0 +1,187 @@
+; GIMP - The GNU Image Manipulation Program
+; Copyright (C) 1995 Spencer Kimball and Peter Mattis
+;
+; This program is free software: you can redistribute it and/or modify
+; it under the terms of the GNU General Public License as published by
+; the Free Software Foundation; either version 3 of the License, or
+; (at your option) any later version.
+;
+; This program is distributed in the hope that it will be useful,
+; but WITHOUT ANY WARRANTY; without even the implied warranty of
+; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+; GNU General Public License for more details.
+;
+; You should have received a copy of the GNU General Public License
+; along with this program.  If not, see <https://www.gnu.org/licenses/>.
+;
+;
+; drop-shadow.scm   version 1.05   2011/4/21
+;
+; CHANGE-LOG:
+; 1.00 - initial release
+; 1.01 - fixed the problem with a remaining copy of the selection
+; 1.02 - some code cleanup, no real changes
+; 1.03 - can't call gimp-drawable-edit-fill until layer is added to image!
+; 1.04
+; 1.05 - replaced deprecated function calls with new ones for 2.8
+;
+; Copyright (C) 1997-1999 Sven Neumann <sven@gimp.org>
+;
+;
+; Adds a drop-shadow of the current selection or alpha-channel.
+;
+; This script is derived from my script add-shadow, which has become
+; obsolete now. Thanks to Andrew Donkin (ard@cs.waikato.ac.nz) for his
+; idea to add alpha-support to add-shadow.
+
+
+(define (script-fu-drop-shadow image
+                               drawable
+                               shadow-transl-x
+                               shadow-transl-y
+                               shadow-blur
+                               shadow-color
+                               shadow-opacity
+                               allow-resize)
+  (let* (
+        (shadow-blur (max shadow-blur 0))
+        (shadow-opacity (min shadow-opacity 100))
+        (shadow-opacity (max shadow-opacity 0))
+        (type (car (gimp-drawable-type-with-alpha drawable)))
+        (image-width (car (gimp-image-width image)))
+        (image-height (car (gimp-image-height image)))
+        (from-selection 0)
+        (active-selection 0)
+        (shadow-layer 0)
+        )
+
+  (gimp-context-push)
+  (gimp-context-set-defaults)
+
+  (gimp-image-set-active-layer image drawable)
+
+  (gimp-image-undo-group-start image)
+
+  (gimp-layer-add-alpha drawable)
+  (if (= (car (gimp-selection-is-empty image)) TRUE)
+      (begin
+        (gimp-image-select-item image CHANNEL-OP-REPLACE drawable)
+        (set! from-selection FALSE))
+      (begin
+        (set! from-selection TRUE)
+        (set! active-selection (car (gimp-selection-save image)))))
+
+  (let* ((selection-bounds (gimp-selection-bounds image))
+         (select-offset-x (cadr selection-bounds))
+         (select-offset-y (caddr selection-bounds))
+         (select-width (- (cadr (cddr selection-bounds)) select-offset-x))
+         (select-height (- (caddr (cddr selection-bounds)) select-offset-y))
+
+         (shadow-width (+ select-width (* 2 shadow-blur)))
+         (shadow-height (+ select-height (* 2 shadow-blur)))
+
+         (shadow-offset-x (- select-offset-x shadow-blur))
+         (shadow-offset-y (- select-offset-y shadow-blur)))
+
+    (if (= allow-resize TRUE)
+        (let* ((new-image-width image-width)
+               (new-image-height image-height)
+               (image-offset-x 0)
+               (image-offset-y 0))
+
+          (if (< (+ shadow-offset-x shadow-transl-x) 0)
+              (begin
+                (set! image-offset-x (- 0 (+ shadow-offset-x
+                                             shadow-transl-x)))
+                (set! shadow-offset-x (- 0 shadow-transl-x))
+                (set! new-image-width (+ new-image-width image-offset-x))))
+
+          (if (< (+ shadow-offset-y shadow-transl-y) 0)
+              (begin
+                (set! image-offset-y (- 0 (+ shadow-offset-y
+                                             shadow-transl-y)))
+                (set! shadow-offset-y (- 0 shadow-transl-y))
+                (set! new-image-height (+ new-image-height image-offset-y))))
+
+          (if (> (+ (+ shadow-width shadow-offset-x) shadow-transl-x)
+                 new-image-width)
+              (set! new-image-width
+                    (+ (+ shadow-width shadow-offset-x) shadow-transl-x)))
+
+          (if (> (+ (+ shadow-height shadow-offset-y) shadow-transl-y)
+                 new-image-height)
+              (set! new-image-height
+                    (+ (+ shadow-height shadow-offset-y) shadow-transl-y)))
+
+          (gimp-image-resize image
+                             new-image-width
+                             new-image-height
+                             image-offset-x
+                             image-offset-y)
+        )
+    )
+
+    (set! shadow-layer (car (gimp-layer-new image
+                                            shadow-width
+                                            shadow-height
+                                            type
+                                            "Drop Shadow"
+                                            shadow-opacity
+                                            LAYER-MODE-NORMAL)))
+    (gimp-image-set-active-layer image drawable)
+    (gimp-image-insert-layer image shadow-layer 0 -1)
+    (gimp-layer-set-offsets shadow-layer
+                            shadow-offset-x
+                            shadow-offset-y))
+
+  (gimp-drawable-fill shadow-layer FILL-TRANSPARENT)
+  (gimp-context-set-background shadow-color)
+  (gimp-drawable-edit-fill shadow-layer FILL-BACKGROUND)
+  (gimp-selection-none image)
+  (gimp-layer-set-lock-alpha shadow-layer FALSE)
+  (if (>= shadow-blur 1.0) (plug-in-gauss-rle RUN-NONINTERACTIVE
+                                              image
+                                              shadow-layer
+                                              shadow-blur
+                                              TRUE
+                                              TRUE))
+  (gimp-item-transform-translate shadow-layer shadow-transl-x shadow-transl-y)
+
+  (if (= from-selection TRUE)
+      (begin
+        (gimp-image-select-item image CHANNEL-OP-REPLACE active-selection)
+        (gimp-drawable-edit-clear shadow-layer)
+        (gimp-image-remove-channel image active-selection)))
+
+  (if (and
+       (= (car (gimp-layer-is-floating-sel drawable)) 0)
+       (= from-selection FALSE))
+      (gimp-image-raise-item image drawable))
+
+  (gimp-image-set-active-layer image drawable)
+  (gimp-image-undo-group-end image)
+  (gimp-displays-flush)
+
+  (gimp-context-pop)
+  )
+)
+
+(script-fu-register "script-fu-drop-shadow"
+  _"_Drop Shadow (legacy)..."
+  _"Add a drop shadow to the selected region (or alpha)"
+  "Sven Neumann <sven@gimp.org>"
+  "Sven Neumann"
+  "1999/12/21"
+  "RGB* GRAY*"
+  SF-IMAGE      "Image"           0
+  SF-DRAWABLE   "Drawable"        0
+  SF-ADJUSTMENT _"Offset X"       '(4 -4096 4096 1 10 0 1)
+  SF-ADJUSTMENT _"Offset Y"       '(4 -4096 4096 1 10 0 1)
+  SF-ADJUSTMENT _"Blur radius"    '(15 0 1024 1 10 0 1)
+  SF-COLOR      _"Color"          "black"
+  SF-ADJUSTMENT _"Opacity"        '(60 0 100 1 10 0 0)
+  SF-TOGGLE     _"Allow resizing" TRUE
+)
+
+(script-fu-menu-register "script-fu-drop-shadow"
+                         "<Image>/Filters/Light and Shadow/Shadow")
diff --git a/plug-ins/script-fu/scripts/erase-rows.scm b/plug-ins/script-fu/scripts/erase-rows.scm
new file mode 100644
index 0000000..4ae4c77
--- /dev/null
+++ b/plug-ins/script-fu/scripts/erase-rows.scm
@@ -0,0 +1,71 @@
+(define (script-fu-erase-rows img drawable orientation which type)
+  (script-fu-erase-nth-rows img drawable orientation which type 2)
+)
+
+(define (script-fu-erase-nth-rows img drawable orientation offset type nth)
+  (let* (
+        (width (car (gimp-drawable-width drawable)))
+        (height (car (gimp-drawable-height drawable)))
+        (position-x (car (gimp-drawable-offsets drawable)))
+        (position-y (cadr (gimp-drawable-offsets drawable)))
+        )
+
+    (gimp-context-push)
+    (gimp-context-set-paint-mode LAYER-MODE-NORMAL)
+    (gimp-context-set-opacity 100.0)
+    (gimp-context-set-feather FALSE)
+    (gimp-image-undo-group-start img)
+    (letrec ((loop (lambda (i max)
+                     (if (< i max)
+                         (begin
+                           (if (= orientation 0)
+                               (gimp-image-select-rectangle img CHANNEL-OP-REPLACE position-x (+ i position-y) width 1)
+                               (gimp-image-select-rectangle img CHANNEL-OP-REPLACE (+ i position-x) position-y 1 height))
+                           (if (= type 0)
+                               (gimp-drawable-edit-clear drawable)
+                               (gimp-drawable-edit-fill drawable FILL-BACKGROUND))
+                           (loop (+ i nth) max))))))
+      (loop offset
+            (if (= orientation 0)
+                height
+                width)
+      )
+    )
+    (gimp-selection-none img)
+    (gimp-image-undo-group-end img)
+    (gimp-context-pop)
+    (gimp-displays-flush)
+  )
+)
+
+(script-fu-register "script-fu-erase-nth-rows"
+  _"_Erase Every Nth Row..."
+  _"Erase every nth row or column"
+  "Federico Mena Quintero, Nikc M. (Altered)"
+  "Federico Mena Quintero"
+  "June 1997, February 2020"
+  "RGB* GRAY* INDEXED*"
+  SF-IMAGE       "Image"      0
+  SF-DRAWABLE    "Drawable"   0
+  SF-OPTION     _"Rows/cols"  '(_"Rows" _"Columns")
+  SF-ADJUSTMENT  "Offset"     '(0 0 1024 1 10 0 SF-SPINNER)
+  SF-OPTION     _"Erase/fill" '(_"Erase" _"Fill with BG")
+  SF-ADJUSTMENT  "Skip by"    '(1 1 1024 1 10 0 SF-SPINNER)
+)
+
+(script-fu-register "script-fu-erase-rows"
+  _"_Erase Every Other Row..."
+  _"Erase every other row or column"
+  "Federico Mena Quintero"
+  "Federico Mena Quintero"
+  "June 1997"
+  "RGB* GRAY* INDEXED*"
+  SF-IMAGE    "Image"      0
+  SF-DRAWABLE "Drawable"   0
+  SF-OPTION  _"Rows/cols"  '(_"Rows" _"Columns")
+  SF-OPTION  _"Even/odd"   '(_"Even" _"Odd")
+  SF-OPTION  _"Erase/fill" '(_"Erase" _"Fill with BG")
+)
+
+; (script-fu-menu-register "script-fu-erase-rows"
+;                          "<Image>/Filters/Distorts")
diff --git a/plug-ins/script-fu/scripts/font-map.scm b/plug-ins/script-fu/scripts/font-map.scm
new file mode 100644
index 0000000..7481d28
--- /dev/null
+++ b/plug-ins/script-fu/scripts/font-map.scm
@@ -0,0 +1,168 @@
+;; font-select
+;; Spencer Kimball
+
+(define (script-fu-font-map text
+                            use-name
+                            labels
+                            font-filter
+                            font-size
+                            border
+                            colors)
+
+  (define (max-font-width text use-name list-cnt list font-size)
+    (let* ((count    0)
+           (width    0)
+           (maxwidth 0)
+           (font     "")
+           (extents  '()))
+      (while (< count list-cnt)
+        (set! font (car list))
+
+        (if (= use-name TRUE)
+            (set! text font))
+        (set! extents (gimp-text-get-extents-fontname text
+                                                      font-size PIXELS
+                                                      font))
+        (set! width (car extents))
+        (if (> width maxwidth)
+            (set! maxwidth width))
+
+        (set! list (cdr list))
+        (set! count (+ count 1))
+      )
+
+      maxwidth
+    )
+  )
+
+  (define (max-font-height text use-name list-cnt list font-size)
+    (let* ((count     0)
+           (height    0)
+           (maxheight 0)
+           (font      "")
+           (extents   '()))
+      (while (< count list-cnt)
+        (set! font (car list))
+
+        (if (= use-name TRUE)
+            (set! text font)
+        )
+        (set! extents (gimp-text-get-extents-fontname text
+                                                      font-size PIXELS
+                                                      font))
+        (set! height (cadr extents))
+        (if (> height maxheight)
+            (set! maxheight height)
+        )
+
+        (set! list (cdr list))
+        (set! count (+ count 1))
+      )
+
+      maxheight
+    )
+  )
+
+  (let* (
+        (font-data  (gimp-fonts-get-list font-filter))
+        (font-list  (cadr font-data))
+        (num-fonts  (car font-data))
+        (label-size (/ font-size 2))
+        (border     (+ border (* labels (/ label-size 2))))
+        (y          border)
+        (maxheight  (max-font-height text use-name num-fonts font-list font-size))
+        (maxwidth   (max-font-width  text use-name num-fonts font-list font-size))
+        (width      (+ maxwidth (* 2 border)))
+        (height     (+ (+ (* maxheight num-fonts) (* 2 border))
+                       (* labels (* label-size num-fonts))))
+        (img        (car (gimp-image-new width height (if (= colors 0)
+                                                          GRAY RGB))))
+        (drawable   (car (gimp-layer-new img width height (if (= colors 0)
+                                                              GRAY-IMAGE RGB-IMAGE)
+                                         "Background" 100 LAYER-MODE-NORMAL)))
+        (count      0)
+        (font       "")
+        )
+
+    (gimp-context-push)
+
+    (gimp-image-undo-disable img)
+
+    (if (= colors 0)
+        (begin
+          (gimp-context-set-background '(255 255 255))
+          (gimp-context-set-foreground '(0 0 0))))
+
+    (gimp-image-insert-layer img drawable 0 0)
+    (gimp-drawable-edit-clear drawable)
+
+    (if (= labels TRUE)
+        (begin
+          (set! drawable (car (gimp-layer-new img width height
+                                              (if (= colors 0)
+                                                  GRAYA-IMAGE RGBA-IMAGE)
+                                              "Labels" 100 LAYER-MODE-NORMAL)))
+          (gimp-image-insert-layer img drawable 0 -1)))
+          (gimp-drawable-edit-clear drawable)
+
+    (while (< count num-fonts)
+      (set! font (car font-list))
+
+      (if (= use-name TRUE)
+          (set! text font))
+
+      (gimp-text-fontname img -1
+                          border
+                          y
+                          text
+                          0 TRUE font-size PIXELS
+                          font)
+
+      (set! y (+ y maxheight))
+
+      (if (= labels TRUE)
+          (begin
+            (gimp-floating-sel-anchor (car (gimp-text-fontname img drawable
+                                                               (- border
+                                                                  (/ label-size 2))
+                                                               (- y
+                                                                  (/ label-size 2))
+                                                               font
+                                                               0 TRUE
+                                                               label-size PIXELS
+                                                               "Sans")))
+          (set! y (+ y label-size))
+          )
+      )
+
+      (set! font-list (cdr font-list))
+      (set! count (+ count 1))
+    )
+
+    (gimp-image-set-active-layer img drawable)
+
+    (gimp-image-undo-enable img)
+    (gimp-display-new img)
+
+    (gimp-context-pop)
+  )
+)
+
+(script-fu-register "script-fu-font-map"
+  _"Render _Font Map..."
+  _"Create an image filled with previews of fonts matching a fontname filter"
+  "Spencer Kimball"
+  "Spencer Kimball"
+  "1997"
+  ""
+  SF-STRING     _"_Text"                  "How quickly daft jumping zebras vex."
+  SF-TOGGLE     _"Use font _name as text" FALSE
+  SF-TOGGLE     _"_Labels"                TRUE
+  SF-STRING     _"_Filter (regexp)"       "Sans"
+  SF-ADJUSTMENT _"Font _size (pixels)"    '(32 2 1000 1 10 0 1)
+  SF-ADJUSTMENT _"_Border (pixels)"       '(10 0  200 1 10 0 1)
+  SF-OPTION     _"_Color scheme"          '(_"Black on white" _"Active colors")
+)
+
+(script-fu-menu-register "script-fu-font-map"
+                         "<Fonts>")
diff --git a/plug-ins/script-fu/scripts/fuzzyborder.scm b/plug-ins/script-fu/scripts/fuzzyborder.scm
new file mode 100644
index 0000000..9c3ddbe
--- /dev/null
+++ b/plug-ins/script-fu/scripts/fuzzyborder.scm
@@ -0,0 +1,168 @@
+;
+; fuzzy-border
+;
+; Do a cool fade to a given color at the border of an image (optional shadow)
+; Will make image RGB if it isn't already.
+;
+; Chris Gutteridge (cjg@ecs.soton.ac.uk)
+; At ECS Dept, University of Southampton, England.
+
+; This program is free software: you can redistribute it and/or modify
+; it under the terms of the GNU General Public License as published by
+; the Free Software Foundation; either version 3 of the License, or
+; (at your option) any later version.
+;
+; This program is distributed in the hope that it will be useful,
+; but WITHOUT ANY WARRANTY; without even the implied warranty of
+; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+; GNU General Public License for more details.
+;
+; You should have received a copy of the GNU General Public License
+; along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+; Define the function:
+
+(define (script-fu-fuzzy-border inImage
+                                inLayer
+                                inColor
+                                inSize
+                                inBlur
+                                inGranu
+                                inShadow
+                                inShadWeight
+                                inCopy
+                                inFlatten
+        )
+
+  (define (chris-color-edge inImage inLayer inColor inSize)
+    (gimp-selection-all inImage)
+    (gimp-selection-shrink inImage inSize)
+    (gimp-selection-invert inImage)
+    (gimp-context-set-background inColor)
+    (gimp-drawable-edit-fill inLayer FILL-BACKGROUND)
+    (gimp-selection-none inImage)
+  )
+
+  (let (
+       (theWidth (car (gimp-image-width inImage)))
+       (theHeight (car (gimp-image-height inImage)))
+       (theImage (if (= inCopy TRUE) (car (gimp-image-duplicate inImage))
+                                      inImage))
+       (theLayer 0)
+       )
+
+    (gimp-context-push)
+    (gimp-context-set-defaults)
+
+    (if (= inCopy TRUE)
+        (gimp-image-undo-disable theImage)
+        (gimp-image-undo-group-start theImage)
+    )
+
+    (gimp-selection-all theImage)
+
+    (if (> (car (gimp-drawable-type inLayer)) 1)
+        (gimp-image-convert-rgb theImage)
+    )
+
+    (set! theLayer (car (gimp-layer-new theImage
+                                        theWidth
+                                        theHeight
+                                        RGBA-IMAGE
+                                        "layer 1"
+                                        100
+                                        LAYER-MODE-NORMAL)))
+
+    (gimp-image-insert-layer theImage theLayer 0 0)
+
+
+    (gimp-drawable-edit-clear theLayer)
+    (chris-color-edge theImage theLayer inColor inSize)
+
+    (gimp-layer-scale theLayer
+                      (/ theWidth inGranu)
+                      (/ theHeight inGranu)
+                      TRUE)
+
+    (plug-in-spread RUN-NONINTERACTIVE
+                    theImage
+                    theLayer
+                    (/ inSize inGranu)
+                    (/ inSize inGranu))
+    (chris-color-edge theImage theLayer inColor 1)
+    (gimp-layer-scale theLayer theWidth theHeight TRUE)
+
+    (gimp-image-select-item theImage CHANNEL-OP-REPLACE theLayer)
+    (gimp-selection-invert theImage)
+    (gimp-drawable-edit-clear theLayer)
+    (gimp-selection-invert theImage)
+    (gimp-drawable-edit-clear theLayer)
+    (gimp-context-set-background inColor)
+    (gimp-drawable-edit-fill theLayer FILL-BACKGROUND)
+    (gimp-selection-none theImage)
+    (chris-color-edge theImage theLayer inColor 1)
+
+    (if (= inBlur TRUE)
+        (plug-in-gauss-rle RUN-NONINTERACTIVE
+                           theImage theLayer inSize TRUE TRUE)
+    )
+    (if (= inShadow TRUE)
+        (begin
+          (gimp-image-insert-layer theImage
+                                   (car (gimp-layer-copy theLayer FALSE)) 0 -1)
+          (gimp-layer-scale theLayer
+                            (- theWidth inSize) (- theHeight inSize) TRUE)
+          (gimp-drawable-desaturate theLayer DESATURATE-LIGHTNESS)
+          (gimp-drawable-brightness-contrast theLayer 0.5 0.5)
+          (gimp-drawable-invert theLayer FALSE)
+          (gimp-layer-resize theLayer
+                             theWidth
+                             theHeight
+                             (/ inSize 2)
+                             (/ inSize 2))
+          (plug-in-gauss-rle RUN-NONINTERACTIVE
+                             theImage
+                             theLayer
+                             (/ inSize 2)
+                             TRUE
+                             TRUE)
+          (gimp-layer-set-opacity theLayer inShadWeight)
+        )
+    )
+    (if (= inFlatten TRUE)
+        (gimp-image-flatten theImage)
+    )
+    (if (= inCopy TRUE)
+        (begin  (gimp-image-clean-all theImage)
+                (gimp-display-new theImage)
+                (gimp-image-undo-enable theImage)
+         )
+        (gimp-image-undo-group-end theImage)
+    )
+    (gimp-displays-flush)
+
+    (gimp-context-pop)
+  )
+)
+
+(script-fu-register "script-fu-fuzzy-border"
+  _"_Fuzzy Border..."
+  _"Add a jagged, fuzzy border to an image"
+  "Chris Gutteridge"
+  "1998, Chris Gutteridge / ECS dept, University of Southampton, England."
+  "3rd April 1998"
+  "RGB* GRAY*"
+  SF-IMAGE      "The image"               0
+  SF-DRAWABLE   "The layer"               0
+  SF-COLOR      _"Color"                  "white"
+  SF-ADJUSTMENT _"Border size"            '(16 1 300 1 10 0 1)
+  SF-TOGGLE     _"Blur border"            TRUE
+  SF-ADJUSTMENT _"Granularity (1 is Low)" '(4 1 16 0.25 5 2 0)
+  SF-TOGGLE     _"Add shadow"             FALSE
+  SF-ADJUSTMENT _"Shadow weight (%)"      '(100 0 100 1 10 0 0)
+  SF-TOGGLE     _"Work on copy"           TRUE
+  SF-TOGGLE     _"Flatten image"          TRUE
+)
+
+(script-fu-menu-register "script-fu-fuzzy-border"
+                         "<Image>/Filters/Decor")
diff --git a/plug-ins/script-fu/scripts/gimp-online.scm b/plug-ins/script-fu/scripts/gimp-online.scm
new file mode 100644
index 0000000..8d3569a
--- /dev/null
+++ b/plug-ins/script-fu/scripts/gimp-online.scm
@@ -0,0 +1,277 @@
+; GIMP - The GNU Image Manipulation Program
+; Copyright (C) 1995 Spencer Kimball and Peter Mattis
+;
+; gimp-online.scm
+; Copyright (C) 2003  Henrik Brix Andersen <brix@gimp.org>
+;
+; This program is free software: you can redistribute it and/or modify
+; it under the terms of the GNU General Public License as published by
+; the Free Software Foundation; either version 3 of the License, or
+; (at your option) any later version.
+;
+; This program is distributed in the hope that it will be useful,
+; but WITHOUT ANY WARRANTY; without even the implied warranty of
+; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+; GNU General Public License for more details.
+;
+; You should have received a copy of the GNU General Public License
+; along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+(define (gimp-online-docs-web-site)
+  (plug-in-web-browser "https://docs.gimp.org/")
+)
+
+(define (gimp-help-concepts-usage)
+  (gimp-help "" "gimp-concepts-usage")
+)
+
+(define (gimp-help-using-docks)
+  (gimp-help "" "gimp-concepts-docks")
+)
+
+(define (gimp-help-using-simpleobjects)
+  (gimp-help "" "gimp-using-simpleobjects")
+)
+
+(define (gimp-help-using-selections)
+  (gimp-help "" "gimp-using-selections")
+)
+
+(define (gimp-help-using-fileformats)
+  (gimp-help "" "gimp-using-fileformats")
+)
+
+(define (gimp-help-using-photography)
+  (gimp-help "" "gimp-using-photography")
+)
+
+(define (gimp-help-using-web)
+  (gimp-help "" "gimp-using-web")
+)
+
+(define (gimp-help-concepts-paths)
+  (gimp-help "" "gimp-concepts-paths")
+)
+
+
+; shortcuts to help topics
+(script-fu-register "gimp-help-concepts-paths"
+   _"Using _Paths"
+   _"Bookmark to the user manual"
+    "Roman Joost <romanofski@gimp.org>"
+    "Roman Joost <romanofski@gimp.org>"
+    "2006"
+    ""
+)
+
+(script-fu-menu-register "gimp-help-concepts-paths"
+			 "<Image>/Help/User Manual")
+
+
+(script-fu-register "gimp-help-using-web"
+   _"_Preparing your Images for the Web"
+   _"Bookmark to the user manual"
+    "Roman Joost <romanofski@gimp.org>"
+    "Roman Joost <romanofski@gimp.org>"
+    "2006"
+    ""
+)
+
+(script-fu-menu-register "gimp-help-using-web"
+			 "<Image>/Help/User Manual")
+
+
+(script-fu-register "gimp-help-using-photography"
+   _"_Working with Digital Camera Photos"
+   _"Bookmark to the user manual"
+    "Roman Joost <romanofski@gimp.org>"
+    "Roman Joost <romanofski@gimp.org>"
+    "2006"
+    ""
+)
+
+(script-fu-menu-register "gimp-help-using-photography"
+			 "<Image>/Help/User Manual")
+
+
+(script-fu-register "gimp-help-using-fileformats"
+   _"Create, Open and Save _Files"
+   _"Bookmark to the user manual"
+    "Roman Joost <romanofski@gimp.org>"
+    "Roman Joost <romanofski@gimp.org>"
+    "2006"
+    ""
+)
+
+(script-fu-menu-register "gimp-help-using-fileformats"
+			 "<Image>/Help/User Manual")
+
+
+(script-fu-register "gimp-help-concepts-usage"
+   _"_Basic Concepts"
+   _"Bookmark to the user manual"
+    "Roman Joost <romanofski@gimp.org>"
+    "Roman Joost <romanofski@gimp.org>"
+    "2006"
+    ""
+)
+
+(script-fu-menu-register "gimp-help-concepts-usage"
+			 "<Image>/Help/User Manual")
+
+
+(script-fu-register "gimp-help-using-docks"
+   _"How to Use _Dialogs"
+   _"Bookmark to the user manual"
+    "Roman Joost <romanofski@gimp.org>"
+    "Roman Joost <romanofski@gimp.org>"
+    "2006"
+    ""
+)
+
+(script-fu-menu-register "gimp-help-using-docks"
+			 "<Image>/Help/User Manual")
+
+
+(script-fu-register "gimp-help-using-simpleobjects"
+   _"Drawing _Simple Objects"
+   _"Bookmark to the user manual"
+    "Roman Joost <romanofski@gimp.org>"
+    "Roman Joost <romanofski@gimp.org>"
+    "2006"
+    ""
+)
+
+(script-fu-menu-register "gimp-help-using-simpleobjects"
+			 "<Image>/Help/User Manual")
+
+
+(script-fu-register "gimp-help-using-selections"
+   _"Create and Use _Selections"
+   _"Bookmark to the user manual"
+    "Roman Joost <romanofski@gimp.org>"
+    "Roman Joost <romanofski@gimp.org>"
+    "2006"
+    ""
+)
+
+(script-fu-menu-register "gimp-help-using-simpleobjects"
+			 "<Image>/Help/User Manual")
+
+
+;; Links to GIMP related web sites
+
+(define (gimp-online-main-web-site)
+  (plug-in-web-browser "https://www.gimp.org/")
+)
+
+(define (gimp-online-developer-web-site)
+  (plug-in-web-browser "https://developer.gimp.org/")
+)
+
+(define (gimp-online-roadmap)
+  (plug-in-web-browser "https://wiki.gimp.org/wiki/Roadmap")
+)
+
+(define (gimp-online-wiki)
+  (plug-in-web-browser "https://wiki.gimp.org/wiki/Main_Page")
+)
+
+(define (gimp-online-bugs-features)
+  (plug-in-web-browser "https://gitlab.gnome.org/GNOME/gimp/issues")
+)
+
+; (define (gimp-online-plug-in-web-site)
+;   (plug-in-web-browser "https://registry.gimp.org/")
+; )
+
+
+(script-fu-register "gimp-online-main-web-site"
+   _"_Main Web Site"
+   _"Bookmark to the GIMP web site"
+    "Henrik Brix Andersen <brix@gimp.org>"
+    "Henrik Brix Andersen <brix@gimp.org>"
+    "2003"
+    ""
+)
+
+(script-fu-menu-register "gimp-online-main-web-site"
+                         "<Image>/Help/GIMP Online")
+
+
+(script-fu-register "gimp-online-developer-web-site"
+   _"_Developer Web Site"
+   _"Bookmark to the GIMP web site"
+    "Henrik Brix Andersen <brix@gimp.org>"
+    "Henrik Brix Andersen <brix@gimp.org>"
+    "2003"
+    ""
+)
+
+(script-fu-menu-register "gimp-online-developer-web-site"
+                         "<Image>/Help/GIMP Online")
+
+
+(script-fu-register "gimp-online-roadmap"
+   _"_Roadmap"
+   _"Bookmark to the roadmap of GIMP"
+    "Alexandre Prokoudine <alexandre.prokoudine@gmail.com>"
+    "Alexandre Prokoudine <alexandre.prokoudine@gmail.com>"
+    "2018"
+    ""
+)
+
+(script-fu-menu-register "gimp-online-roadmap"
+                         "<Image>/Help/GIMP Online")
+
+
+(script-fu-register "gimp-online-wiki"
+   _"_Wiki"
+   _"Bookmark to the wiki of GIMP"
+    "Alexandre Prokoudine <alexandre.prokoudine@gmail.com>"
+    "Alexandre Prokoudine <alexandre.prokoudine@gmail.com>"
+    "2018"
+    ""
+)
+
+(script-fu-menu-register "gimp-online-wiki"
+                         "<Image>/Help/GIMP Online")
+
+
+(script-fu-register "gimp-online-bugs-features"
+   _"_Bug Reports and Feature Requests"
+   _"Bookmark to the bug tracker of GIMP"
+    "Alexandre Prokoudine <alexandre.prokoudine@gmail.com>"
+    "Alexandre Prokoudine <alexandre.prokoudine@gmail.com>"
+    "2018"
+    ""
+)
+
+(script-fu-menu-register "gimp-online-bugs-features"
+                         "<Image>/Help")
+
+
+(script-fu-register "gimp-online-docs-web-site"
+   _"_User Manual Web Site"
+   _"Bookmark to the GIMP web site"
+    "Roman Joost <romanofski@gimp.org>"
+    "Roman Joost <romanofski@gimp.org>"
+    "2006"
+    ""
+)
+
+(script-fu-menu-register "gimp-online-docs-web-site"
+                         "<Image>/Help/GIMP Online")
+
+
+; (script-fu-register "gimp-online-plug-in-web-site"
+;    _"Plug-in _Registry"
+;    _"Bookmark to the GIMP web site"
+;     "Henrik Brix Andersen <brix@gimp.org>"
+;     "Henrik Brix Andersen <brix@gimp.org>"
+;     "2003"
+;     ""
+; )
+
+; (script-fu-menu-register "gimp-online-plug-in-web-site"
+;                          "<Image>/Help/GIMP Online")
diff --git a/plug-ins/script-fu/scripts/gradient-example.scm b/plug-ins/script-fu/scripts/gradient-example.scm
new file mode 100644
index 0000000..3157c88
--- /dev/null
+++ b/plug-ins/script-fu/scripts/gradient-example.scm
@@ -0,0 +1,81 @@
+; GIMP - The GNU Image Manipulation Program
+; Copyright (C) 1995 Spencer Kimball and Peter Mattis
+;
+; Gradient example script --- create an example image of a custom gradient
+; Copyright (C) 1997 Federico Mena Quintero
+; federico@nuclecu.unam.mx
+;
+; This program is free software: you can redistribute it and/or modify
+; it under the terms of the GNU General Public License as published by
+; the Free Software Foundation; either version 3 of the License, or
+; (at your option) any later version.
+;
+; This program is distributed in the hope that it will be useful,
+; but WITHOUT ANY WARRANTY; without even the implied warranty of
+; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+; GNU General Public License for more details.
+;
+; You should have received a copy of the GNU General Public License
+; along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+(define (script-fu-gradient-example width
+                                    height
+                                    gradient-reverse)
+  (let* (
+        (img (car (gimp-image-new width height RGB)))
+        (drawable (car (gimp-layer-new img width height RGB
+                                       "Gradient example" 100 LAYER-MODE-NORMAL)))
+
+        ; Calculate colors for checkerboard... just like in the gradient editor
+
+        (fg-color (* 255 (/ 2 3)))
+        (bg-color (* 255 (/ 1 3)))
+        )
+
+    (gimp-image-undo-disable img)
+    (gimp-image-insert-layer img drawable 0 0)
+
+    ; Render background checkerboard
+
+    (gimp-context-push)
+
+    (gimp-context-set-foreground (list fg-color fg-color fg-color))
+    (gimp-context-set-background (list bg-color bg-color bg-color))
+    (plug-in-checkerboard RUN-NONINTERACTIVE img drawable 0 8)
+
+    (gimp-context-pop)
+
+    ; Render gradient
+
+    (gimp-context-push)
+
+    (gimp-context-set-gradient-reverse gradient-reverse)
+    (gimp-drawable-edit-gradient-fill drawable
+				      GRADIENT-LINEAR 0
+				      FALSE 0 0
+				      TRUE
+				      0 0 (- width 1) 0)
+
+    (gimp-context-pop)
+
+    ; Terminate
+
+    (gimp-image-undo-enable img)
+    (gimp-display-new img)
+  )
+)
+
+(script-fu-register "script-fu-gradient-example"
+    _"Custom _Gradient..."
+    _"Create an image filled with an example of the current gradient"
+    "Federico Mena Quintero"
+    "Federico Mena Quintero"
+    "June 1997"
+    ""
+    SF-ADJUSTMENT _"Width"            '(400 1 2000 1 10 0 1)
+    SF-ADJUSTMENT _"Height"           '(30 1 2000 1 10 0 1)
+    SF-TOGGLE     _"Gradient reverse" FALSE
+)
+
+(script-fu-menu-register "script-fu-gradient-example"
+                         "<Gradients>")
diff --git a/plug-ins/script-fu/scripts/grid-system.scm b/plug-ins/script-fu/scripts/grid-system.scm
new file mode 100644
index 0000000..6607a3e
--- /dev/null
+++ b/plug-ins/script-fu/scripts/grid-system.scm
@@ -0,0 +1,95 @@
+;;; grid-system.scm -*-scheme-*-
+;;; Time-stamp: <1998/01/20 23:22:02 narazaki@InetQ.or.jp>
+;;; This file is a part of:
+;;;   GIMP (Copyright (C) 1995-1997 Spencer Kimball and Peter Mattis)
+;;; Author: Shuji Narazaki (narazaki@InetQ.or.jp)
+;;; Version 0.6
+
+;;; Code:
+(if (not (symbol-bound? 'script-fu-grid-system-x-divides (current-environment)))
+    (define script-fu-grid-system-x-divides "'(1 g 1)"))
+(if (not (symbol-bound? 'script-fu-grid-system-y-divides (current-environment)))
+    (define script-fu-grid-system-y-divides "'(1 g 1)"))
+
+(define (script-fu-grid-system img drw x-divides-orig y-divides-orig)
+  (define (update-segment! s x0 y0 x1 y1)
+    (aset s 0 x0)
+    (aset s 1 y0)
+    (aset s 2 x1)
+    (aset s 3 y1))
+  (define (map proc seq)
+    (if (null? seq)
+        '()
+        (cons (proc (car seq))
+              (map proc (cdr seq)))))
+  (define (convert-g l)
+    (cond ((null? l) '())
+    ((eq? (car l) 'g) (cons 1.618 (convert-g (cdr l))))
+    ((eq? (car l) '1/g) (cons 0.618 (convert-g (cdr l))))
+    ('else (cons (car l) (convert-g (cdr l))))))
+  (define (wrap-list l)
+    (define (wrap-object obj)
+      (cond ((number? obj) (string-append (number->string obj) " "))
+      ((eq? obj 'g) "g ")
+      (eq? obj '1/g) "1/g "))
+    (string-append "'(" (apply string-append (map wrap-object l)) ")"))
+  (let* ((drw-width (car (gimp-drawable-width drw)))
+   (drw-height (car (gimp-drawable-height drw)))
+   (drw-offset-x (nth 0 (gimp-drawable-offsets drw)))
+   (drw-offset-y (nth 1 (gimp-drawable-offsets drw)))
+   (grid-layer #f)
+   (segment (cons-array 4 'double))
+   (stepped-x 0)
+   (stepped-y 0)
+   (temp 0)
+   (total-step-x 0)
+   (total-step-y 0)
+   (x-divides (convert-g x-divides-orig))
+   (y-divides (convert-g y-divides-orig))
+   (total-step-x (apply + x-divides))
+   (total-step-y (apply + y-divides)))
+
+    (gimp-image-undo-group-start img)
+
+    (set! grid-layer (car (gimp-layer-copy drw TRUE)))
+    (gimp-image-insert-layer img grid-layer 0 0)
+    (gimp-drawable-edit-clear grid-layer)
+    (gimp-item-set-name grid-layer "Grid Layer")
+
+    (while (not (null? (cdr x-divides)))
+      (set! stepped-x (+ stepped-x (car x-divides)))
+      (set! temp (* drw-width (/ stepped-x total-step-x)))
+      (set! x-divides (cdr x-divides))
+      (update-segment! segment
+           (+ drw-offset-x temp) drw-offset-y
+           (+ drw-offset-x temp) (+ drw-offset-y drw-height))
+      (gimp-pencil grid-layer 4 segment))
+
+    (while (not (null? (cdr y-divides)))
+      (set! stepped-y (+ stepped-y (car y-divides)))
+      (set! temp (* drw-height (/ stepped-y total-step-y)))
+      (set! y-divides (cdr y-divides))
+      (update-segment! segment
+           drw-offset-x (+ drw-offset-y temp)
+           (+ drw-offset-x drw-width) (+ drw-offset-y temp))
+      (gimp-pencil grid-layer 4 segment))
+
+    (gimp-image-undo-group-end img)
+
+    (set! script-fu-grid-system-x-divides (wrap-list x-divides-orig))
+    (set! script-fu-grid-system-y-divides (wrap-list y-divides-orig))
+    (gimp-displays-flush)))
+
+(script-fu-register "script-fu-grid-system"
+  _"_Grid..."
+  _"Draw a grid as specified by the lists of X and Y locations using the current brush"
+  "Shuji Narazaki <narazaki@InetQ.or.jp>"
+  "Shuji Narazaki"
+  "1997"
+  "RGB*, INDEXED*, GRAY*"
+  SF-IMAGE     "Image to use"          0
+  SF-DRAWABLE  "Drawable to draw grid" 0
+  SF-VALUE    _"X divisions"           script-fu-grid-system-x-divides
+  SF-VALUE    _"Y divisions"           script-fu-grid-system-y-divides
+)
+
diff --git a/plug-ins/script-fu/scripts/guides-from-selection.scm b/plug-ins/script-fu/scripts/guides-from-selection.scm
new file mode 100644
index 0000000..b790c86
--- /dev/null
+++ b/plug-ins/script-fu/scripts/guides-from-selection.scm
@@ -0,0 +1,43 @@
+;; -*-scheme-*-
+
+(define (script-fu-guides-from-selection image drawable)
+  (let* (
+        (boundaries (gimp-selection-bounds image))
+        ;; non-empty INT32 TRUE if there is a selection
+        (selection (car boundaries))
+        (x1 (cadr boundaries))
+        (y1 (caddr boundaries))
+        (x2 (cadr (cddr boundaries)))
+        (y2 (caddr (cddr boundaries)))
+        )
+
+    ;; need to check for a selection or we get guides right at edges of the image
+    (if (= selection TRUE)
+      (begin
+        (gimp-image-undo-group-start image)
+
+        (gimp-image-add-vguide image x1)
+        (gimp-image-add-hguide image y1)
+        (gimp-image-add-vguide image x2)
+        (gimp-image-add-hguide image y2)
+
+        (gimp-image-undo-group-end image)
+        (gimp-displays-flush)
+      )
+    )
+  )
+)
+
+(script-fu-register "script-fu-guides-from-selection"
+  _"New Guides from _Selection"
+  _"Create four guides around the bounding box of the current selection"
+  "Alan Horkan"
+  "Alan Horkan, 2004.  Public Domain."
+  "2004-08-13"
+  "*"
+  SF-IMAGE    "Image"    0
+  SF-DRAWABLE "Drawable" 0
+)
+
+(script-fu-menu-register "script-fu-guides-from-selection"
+                         "<Image>/Image/Guides")
diff --git a/plug-ins/script-fu/scripts/guides-new-percent.scm b/plug-ins/script-fu/scripts/guides-new-percent.scm
new file mode 100644
index 0000000..c42d457
--- /dev/null
+++ b/plug-ins/script-fu/scripts/guides-new-percent.scm
@@ -0,0 +1,41 @@
+;; -*-scheme-*-
+
+;; Alan Horkan 2004.  No copyright.  Public Domain.
+
+(define (script-fu-guide-new-percent image drawable direction position)
+  (let* (
+        (width (car (gimp-image-width image)))
+      	(height (car (gimp-image-height image)))
+        )
+
+    (if (= direction 0)
+      	(set! position (/ (* height position) 100))
+	      (set! position (/ (* width position) 100))
+    )
+
+    (if (= direction 0)
+	      ;; convert position to pixel
+	      (if (<= position height) (gimp-image-add-hguide image position))
+	      (if (<= position width) (gimp-image-add-vguide image position))
+    )
+
+    (gimp-displays-flush)
+  )
+)
+
+(script-fu-register "script-fu-guide-new-percent"
+  _"New Guide (by _Percent)..."
+  _"Add a guide at the position specified as a percentage of the image size"
+  "Alan Horkan"
+  "Alan Horkan, 2004"
+  "April 2004"
+  "*"
+  SF-IMAGE      "Input Image"      0
+  SF-DRAWABLE   "Input Drawable"   0
+  SF-OPTION     _"_Direction"       '(_"Horizontal"
+                                     _"Vertical")
+  SF-ADJUSTMENT _"_Position (in %)" '(50 0 100 1 10 2 1)
+)
+
+(script-fu-menu-register "script-fu-guide-new-percent"
+                         "<Image>/Image/Guides")
diff --git a/plug-ins/script-fu/scripts/guides-new.scm b/plug-ins/script-fu/scripts/guides-new.scm
new file mode 100644
index 0000000..08217af
--- /dev/null
+++ b/plug-ins/script-fu/scripts/guides-new.scm
@@ -0,0 +1,40 @@
+;; -*-scheme-*-
+
+;; Alan Horkan 2004.  Public Domain.
+;; so long as remove this block of comments from your script
+;; feel free to use it for whatever you like.
+
+(define (script-fu-guide-new image
+                             drawable
+                             direction
+                             position)
+  (let* (
+        (width (car (gimp-image-width image)))
+        (height (car (gimp-image-height image)))
+        )
+
+    (if (= direction 0)
+        ;; check position is inside the image boundaries
+        (if (<= position height) (gimp-image-add-hguide image position))
+        (if (<= position width) (gimp-image-add-vguide image position))
+    )
+
+    (gimp-displays-flush)
+  )
+)
+
+(script-fu-register "script-fu-guide-new"
+  _"New _Guide..."
+  _"Add a guide at the orientation and position specified (in pixels)"
+  "Alan Horkan"
+  "Alan Horkan, 2004.  Public Domain."
+  "2004-04-02"
+  "*"
+  SF-IMAGE      "Image"      0
+  SF-DRAWABLE   "Drawable"   0
+  SF-OPTION     _"_Direction" '(_"Horizontal" _"Vertical")
+  SF-ADJUSTMENT _"_Position"  (list 0 0 MAX-IMAGE-SIZE 1 10 0 1)
+)
+
+(script-fu-menu-register "script-fu-guide-new"
+                         "<Image>/Image/Guides")
diff --git a/plug-ins/script-fu/scripts/guides-remove-all.scm b/plug-ins/script-fu/scripts/guides-remove-all.scm
new file mode 100644
index 0000000..61cc3ed
--- /dev/null
+++ b/plug-ins/script-fu/scripts/guides-remove-all.scm
@@ -0,0 +1,30 @@
+;; -*-scheme-*-
+
+(define (script-fu-guides-remove image drawable)
+  (let* ((guide-id 0))
+    (gimp-image-undo-group-start image)
+
+    (set! guide-id (car (gimp-image-find-next-guide image 0)))
+    (while (> guide-id 0)
+      (gimp-image-delete-guide image guide-id)
+      (set! guide-id (car (gimp-image-find-next-guide image 0)))
+    )
+
+    (gimp-image-undo-group-end image)
+    (gimp-displays-flush)
+  )
+)
+
+(script-fu-register "script-fu-guides-remove"
+  _"_Remove all Guides"
+  _"Remove all horizontal and vertical guides"
+  "Alan Horkan"
+  "Alan Horkan, 2004. Public Domain."
+  "April 2004"
+  "*"
+  SF-IMAGE    "Image"    0
+  SF-DRAWABLE "Drawable" 0
+)
+
+(script-fu-menu-register "script-fu-guides-remove"
+                         "<Image>/Image/Guides")
diff --git a/plug-ins/script-fu/scripts/images/Makefile.am b/plug-ins/script-fu/scripts/images/Makefile.am
new file mode 100644
index 0000000..5457226
--- /dev/null
+++ b/plug-ins/script-fu/scripts/images/Makefile.am
@@ -0,0 +1,12 @@
+## Process this file with automake to produce Makefile.in
+
+imagesdatadir = $(gimpdatadir)/scripts/images
+
+imagesdata_DATA = \
+	beavis.jpg	\
+	texture.jpg	\
+	texture1.jpg	\
+	texture2.jpg	\
+	texture3.jpg
+
+EXTRA_DIST = $(imagesdata_DATA)
diff --git a/plug-ins/script-fu/scripts/images/Makefile.in b/plug-ins/script-fu/scripts/images/Makefile.in
new file mode 100644
index 0000000..abc16d0
--- /dev/null
+++ b/plug-ins/script-fu/scripts/images/Makefile.in
@@ -0,0 +1,810 @@
+# Makefile.in generated by automake 1.16.3 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994-2020 Free Software Foundation, Inc.
+
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
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+
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diff --git a/plug-ins/script-fu/scripts/images/beavis.jpg b/plug-ins/script-fu/scripts/images/beavis.jpg
new file mode 100644
index 0000000..d555047
--- /dev/null
+++ b/plug-ins/script-fu/scripts/images/beavis.jpg
diff --git a/plug-ins/script-fu/scripts/images/texture.jpg b/plug-ins/script-fu/scripts/images/texture.jpg
new file mode 100644
index 0000000..8890c7f
--- /dev/null
+++ b/plug-ins/script-fu/scripts/images/texture.jpg
diff --git a/plug-ins/script-fu/scripts/images/texture1.jpg b/plug-ins/script-fu/scripts/images/texture1.jpg
new file mode 100644
index 0000000..8bb8acd
--- /dev/null
+++ b/plug-ins/script-fu/scripts/images/texture1.jpg
diff --git a/plug-ins/script-fu/scripts/images/texture2.jpg b/plug-ins/script-fu/scripts/images/texture2.jpg
new file mode 100644
index 0000000..6b5d2ef
--- /dev/null
+++ b/plug-ins/script-fu/scripts/images/texture2.jpg
diff --git a/plug-ins/script-fu/scripts/images/texture3.jpg b/plug-ins/script-fu/scripts/images/texture3.jpg
new file mode 100644
index 0000000..34d0988
--- /dev/null
+++ b/plug-ins/script-fu/scripts/images/texture3.jpg
diff --git a/plug-ins/script-fu/scripts/lava.scm b/plug-ins/script-fu/scripts/lava.scm
new file mode 100644
index 0000000..8adec0d
--- /dev/null
+++ b/plug-ins/script-fu/scripts/lava.scm
@@ -0,0 +1,135 @@
+; GIMP - The GNU Image Manipulation Program
+; Copyright (C) 1995 Spencer Kimball and Peter Mattis
+;
+; Lava effect
+; Copyright (c) 1997 Adrian Likins
+; aklikins@eos.ncsu.edu
+;
+; based on a idea by Sven Riedel <lynx@heim8.tu-clausthal.de>
+; tweaked a bit by Sven Neumann <neumanns@uni-duesseldorf.de>
+;
+; This program is free software: you can redistribute it and/or modify
+; it under the terms of the GNU General Public License as published by
+; the Free Software Foundation; either version 3 of the License, or
+; (at your option) any later version.
+;
+; This program is distributed in the hope that it will be useful,
+; but WITHOUT ANY WARRANTY; without even the implied warranty of
+; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+; GNU General Public License for more details.
+;
+; You should have received a copy of the GNU General Public License
+; along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+
+(define (script-fu-lava image
+                        drawable
+                        seed
+                        tile_size
+                        mask_size
+                        gradient
+                        keep-selection
+                        separate-layer
+                        current-grad)
+  (let* (
+        (type (car (gimp-drawable-type-with-alpha drawable)))
+        (image-width (car (gimp-image-width image)))
+        (image-height (car (gimp-image-height image)))
+        (active-selection 0)
+        (selection-bounds 0)
+        (select-offset-x 0)
+        (select-offset-y 0)
+        (select-width 0)
+        (select-height 0)
+        (lava-layer 0)
+        (active-layer 0)
+        )
+
+    (gimp-context-push)
+    (gimp-context-set-defaults)
+    (gimp-image-undo-group-start image)
+
+    (if (= (car (gimp-drawable-has-alpha drawable)) FALSE)
+        (gimp-layer-add-alpha drawable)
+    )
+
+    (if (= (car (gimp-selection-is-empty image)) TRUE)
+        (gimp-image-select-item image CHANNEL-OP-REPLACE drawable)
+    )
+
+    (set! active-selection (car (gimp-selection-save image)))
+    (gimp-image-set-active-layer image drawable)
+
+    (set! selection-bounds (gimp-selection-bounds image))
+    (set! select-offset-x (cadr selection-bounds))
+    (set! select-offset-y (caddr selection-bounds))
+    (set! select-width (- (cadr (cddr selection-bounds)) select-offset-x))
+    (set! select-height (- (caddr (cddr selection-bounds)) select-offset-y))
+
+    (if (= separate-layer TRUE)
+        (begin
+          (set! lava-layer (car (gimp-layer-new image
+                                                select-width
+                                                select-height
+                                                type
+                                                "Lava Layer"
+                                                100
+                                                LAYER-MODE-NORMAL-LEGACY)))
+
+          (gimp-image-insert-layer image lava-layer 0 -1)
+          (gimp-layer-set-offsets lava-layer select-offset-x select-offset-y)
+          (gimp-selection-none image)
+          (gimp-drawable-edit-clear lava-layer)
+
+          (gimp-image-select-item image CHANNEL-OP-REPLACE drawable)
+          (gimp-image-set-active-layer image lava-layer)
+        )
+    )
+
+    (set! active-layer (car (gimp-image-get-active-layer image)))
+
+    (if (= current-grad FALSE)
+        (gimp-context-set-gradient gradient)
+    )
+
+    (plug-in-solid-noise RUN-NONINTERACTIVE image active-layer FALSE TRUE seed 2 2 2)
+    (plug-in-cubism RUN-NONINTERACTIVE image active-layer tile_size 2.5 0)
+    (plug-in-oilify RUN-NONINTERACTIVE image active-layer mask_size 0)
+    (plug-in-edge RUN-NONINTERACTIVE image active-layer 2 0 0)
+    (plug-in-gauss-rle RUN-NONINTERACTIVE image active-layer 2 TRUE TRUE)
+    (plug-in-gradmap RUN-NONINTERACTIVE image active-layer)
+
+    (if (= keep-selection FALSE)
+        (gimp-selection-none image)
+    )
+
+    (gimp-image-set-active-layer image drawable)
+    (gimp-image-remove-channel image active-selection)
+
+    (gimp-image-undo-group-end image)
+    (gimp-context-pop)
+
+    (gimp-displays-flush)
+  )
+)
+
+(script-fu-register "script-fu-lava"
+  _"_Lava..."
+  _"Fill the current selection with lava"
+  "Adrian Likins <adrian@gimp.org>"
+  "Adrian Likins"
+  "10/12/97"
+  "RGB* GRAY*"
+  SF-IMAGE       "Image"          0
+  SF-DRAWABLE    "Drawable"       0
+  SF-ADJUSTMENT _"Seed"           '(10 1 30000 1 10 0 1)
+  SF-ADJUSTMENT _"Size"           '(10 0 100 1 10 0 1)
+  SF-ADJUSTMENT _"Roughness"      '(7 3 50 1 10 0 0)
+  SF-GRADIENT   _"Gradient"       "German flag smooth"
+  SF-TOGGLE     _"Keep selection" TRUE
+  SF-TOGGLE     _"Separate layer" TRUE
+  SF-TOGGLE     _"Use current gradient" FALSE
+)
+
+(script-fu-menu-register "script-fu-lava"
+                         "<Image>/Filters/Render")
diff --git a/plug-ins/script-fu/scripts/line-nova.scm b/plug-ins/script-fu/scripts/line-nova.scm
new file mode 100644
index 0000000..8c5c35b
--- /dev/null
+++ b/plug-ins/script-fu/scripts/line-nova.scm
@@ -0,0 +1,123 @@
+;;; line-nova.scm for gimp-1.1 -*-scheme-*-
+;;; Time-stamp: <1998/11/25 13:26:44 narazaki@gimp.org>
+;;; Author Shuji Narazaki <narazaki@gimp.org>
+;;; Version 0.7
+
+(define (script-fu-line-nova img drw num-of-lines corn-deg offset variation)
+  (let* (
+        (*points* (cons-array (* 3 2) 'double))
+        (modulo fmod)                        ; in R4RS way
+        (pi/2 (/ *pi* 2))
+        (pi/4 (/ *pi* 4))
+        (pi3/4 (* 3 pi/4))
+        (pi5/4 (* 5 pi/4))
+        (pi3/2 (* 3 pi/2))
+        (pi7/4 (* 7 pi/4))
+        (2pi (* 2 *pi*))
+        (rad/deg (/ 2pi 360))
+        (variation/2 (/ variation 2))
+        (drw-width (car (gimp-drawable-width drw)))
+        (drw-height (car (gimp-drawable-height drw)))
+        (drw-offsets (gimp-drawable-offsets drw))
+        (old-selection FALSE)
+        (radius (max drw-height drw-width))
+        (index 0)
+        (dir-deg/line (/ 360 num-of-lines))
+        (fg-color (car (gimp-context-get-foreground)))
+        )
+    (gimp-context-push)
+    (gimp-context-set-defaults)
+    (gimp-context-set-foreground fg-color)
+
+    (define (draw-vector beg-x beg-y direction)
+
+      (define (set-point! index x y)
+            (aset *points* (* 2 index) x)
+            (aset *points* (+ (* 2 index) 1) y)
+      )
+      (define (deg->rad rad)
+            (* (modulo rad 360) rad/deg)
+      )
+      (define (set-marginal-point beg-x beg-y direction)
+        (let (
+             (dir1 (deg->rad (+ direction corn-deg)))
+             (dir2 (deg->rad (- direction corn-deg)))
+             )
+
+          (define (aux dir index)
+                   (set-point! index
+                               (+ beg-x (* (cos dir) radius))
+                               (+ beg-y (* (sin dir) radius)))
+          )
+
+          (aux dir1 1)
+          (aux dir2 2)
+        )
+      )
+
+      (let (
+           (dir0 (deg->rad direction))
+           (off (+ offset (- (modulo (rand) variation) variation/2)))
+           )
+
+        (set-point! 0
+                    (+ beg-x (* off (cos dir0)))
+                    (+ beg-y (* off (sin dir0)))
+        )
+        (set-marginal-point beg-x beg-y direction)
+        (gimp-image-select-polygon img CHANNEL-OP-ADD 6 *points*)
+      )
+    )
+
+    (gimp-image-undo-group-start img)
+
+    (set! old-selection
+      (if (eq? (car (gimp-selection-is-empty img)) TRUE)
+         #f
+         (car (gimp-selection-save img))
+      )
+    )
+
+    (gimp-selection-none img)
+    (srand (realtime))
+    (while (< index num-of-lines)
+      (draw-vector (+ (nth 0 drw-offsets) (/ drw-width 2))
+                   (+ (nth 1 drw-offsets) (/ drw-height 2))
+                   (* index dir-deg/line)
+      )
+      (set! index (+ index 1))
+    )
+    (gimp-drawable-edit-fill drw FILL-FOREGROUND)
+
+    (if old-selection
+      (begin
+        (gimp-image-select-item img CHANNEL-OP-REPLACE old-selection)
+        ;; (gimp-image-set-active-layer img drw)
+        ;; delete extra channel by Sven Neumann <neumanns@uni-duesseldorf.de>
+        (gimp-image-remove-channel img old-selection)
+      )
+    )
+
+    (gimp-image-undo-group-end img)
+    (gimp-displays-flush)
+    (gimp-context-pop)
+  )
+)
+
+(script-fu-register "script-fu-line-nova"
+  _"Line _Nova..."
+  _"Fill a layer with rays emanating outward from its center using the foreground color"
+  "Shuji Narazaki <narazaki@gimp.org>"
+  "Shuji Narazaki"
+  "1997,1998"
+  "*"
+  SF-IMAGE       "Image"               0
+  SF-DRAWABLE    "Drawable"            0
+  SF-ADJUSTMENT _"Number of lines"     '(200 40 1000 1 1 0 1)
+  SF-ADJUSTMENT _"Sharpness (degrees)" '(1.0 0.0 10.0 0.1 1 1 1)
+  SF-ADJUSTMENT _"Offset radius"       '(100 0 2000 1 1 0 1)
+  SF-ADJUSTMENT _"Randomness"          '(30 1 2000 1 1 0 1)
+)
+
+(script-fu-menu-register "script-fu-line-nova"
+                         "<Image>/Filters/Render")
diff --git a/plug-ins/script-fu/scripts/mkbrush.scm b/plug-ins/script-fu/scripts/mkbrush.scm
new file mode 100644
index 0000000..7a316a4
--- /dev/null
+++ b/plug-ins/script-fu/scripts/mkbrush.scm
@@ -0,0 +1,272 @@
+; GIMP - The GNU Image Manipulation Program
+; Copyright (C) 1995 Spencer Kimball and Peter Mattis
+;
+; Make-Brush - a script for the script-fu program
+; by Seth Burgess 1997 <sjburges@ou.edu>
+;
+; 18-Dec-2000 fixed to work with the new convention (not inverted) of
+;             gbr saver (jtl@gimp.org)
+;
+; This program is free software: you can redistribute it and/or modify
+; it under the terms of the GNU General Public License as published by
+; the Free Software Foundation; either version 3 of the License, or
+; (at your option) any later version.
+;
+; This program is distributed in the hope that it will be useful,
+; but WITHOUT ANY WARRANTY; without even the implied warranty of
+; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+; GNU General Public License for more details.
+;
+; You should have received a copy of the GNU General Public License
+; along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+
+(define (script-fu-make-brush-rectangular name width height spacing)
+  (let* (
+        (img (car (gimp-image-new width height GRAY)))
+        (drawable (car (gimp-layer-new img
+                                       width height GRAY-IMAGE
+                                       "MakeBrush" 100 LAYER-MODE-NORMAL)))
+        (filename (string-append gimp-directory
+                                 "/brushes/r"
+                                 (number->string width)
+                                 "x"
+                                 (number->string height)
+                                 ".gbr"))
+        )
+
+    (gimp-context-push)
+    (gimp-context-set-defaults)
+
+    (gimp-image-undo-disable img)
+    (gimp-image-insert-layer img drawable 0 0)
+
+    (gimp-context-set-background '(255 255 255))
+    (gimp-drawable-fill drawable FILL-BACKGROUND)
+
+    (gimp-image-select-rectangle img CHANNEL-OP-REPLACE 0 0 width height)
+
+    (gimp-context-set-background '(0 0 0))
+    (gimp-drawable-edit-fill drawable FILL-BACKGROUND)
+
+    (file-gbr-save 1 img drawable filename "" spacing name)
+    (gimp-image-delete img)
+
+    (gimp-context-pop)
+
+    (gimp-brushes-refresh)
+    (gimp-context-set-brush name)
+  )
+)
+
+(script-fu-register "script-fu-make-brush-rectangular"
+  _"_Rectangular..."
+  _"Create a rectangular brush"
+  "Seth Burgess <sjburges@ou.edu>"
+  "Seth Burgess"
+  "1997"
+  ""
+  SF-STRING     _"Name"    "Rectangle"
+  SF-ADJUSTMENT _"Width"   '(20 1 200 1 10 0 1)
+  SF-ADJUSTMENT _"Height"  '(20 1 200 1 10 0 1)
+  SF-ADJUSTMENT _"Spacing" '(25 1 100 1 10 1 0)
+)
+
+(script-fu-menu-register "script-fu-make-brush-rectangular"
+                         "<Brushes>")
+
+
+(define (script-fu-make-brush-rectangular-feathered name width height
+                                                    feathering spacing)
+  (let* (
+        (widthplus (+ width feathering))
+        (heightplus (+ height feathering))
+        (img (car (gimp-image-new widthplus heightplus GRAY)))
+        (drawable (car (gimp-layer-new img
+                                       widthplus heightplus GRAY-IMAGE
+                                       "MakeBrush" 100 LAYER-MODE-NORMAL)))
+        (filename (string-append gimp-directory
+                                 "/brushes/r"
+                                 (number->string width)
+                                 "x"
+                                 (number->string height)
+                                 "f"
+                                 (number->string feathering)
+                                 ".gbr"))
+        )
+
+    (gimp-context-push)
+    (gimp-context-set-paint-mode LAYER-MODE-NORMAL)
+    (gimp-context-set-opacity 100.0)
+
+    (gimp-image-undo-disable img)
+    (gimp-image-insert-layer img drawable 0 0)
+
+    (gimp-context-set-background '(255 255 255))
+    (gimp-drawable-fill drawable FILL-BACKGROUND)
+
+    (cond
+      ((< 0 feathering)
+       (gimp-context-set-feather TRUE)
+       (gimp-context-set-feather-radius feathering feathering)
+       (gimp-image-select-rectangle img CHANNEL-OP-REPLACE
+           (/ feathering 2) (/ feathering 2) width height))
+      ((>= 0 feathering)
+      (gimp-context-set-feather FALSE)
+      (gimp-image-select-rectangle img CHANNEL-OP-REPLACE 0 0 width height))
+    )
+
+    (gimp-context-set-background '(0 0 0))
+    (gimp-drawable-edit-fill drawable FILL-BACKGROUND)
+
+    (file-gbr-save 1 img drawable filename "" spacing name)
+    (gimp-image-delete img)
+
+    (gimp-context-pop)
+
+    (gimp-brushes-refresh)
+    (gimp-context-set-brush name)
+  )
+)
+
+(script-fu-register "script-fu-make-brush-rectangular-feathered"
+  _"Re_ctangular, Feathered..."
+  _"Create a rectangular brush with feathered edges"
+  "Seth Burgess <sjburges@ou.edu>"
+  "Seth Burgess"
+  "1997"
+  ""
+  SF-STRING     _"Name"       "Rectangle"
+  SF-ADJUSTMENT _"Width"      '(20 1 200 1 10 0 1)
+  SF-ADJUSTMENT _"Height"     '(20 1 200 1 10 0 1)
+  SF-ADJUSTMENT _"Feathering" '(4 1 100 1 10 0 1)
+  SF-ADJUSTMENT _"Spacing"    '(25 1 100 1 10 1 0)
+)
+
+(script-fu-menu-register "script-fu-make-brush-rectangular-feathered"
+                         "<Brushes>")
+
+
+(define (script-fu-make-brush-elliptical name width height spacing)
+  (let* (
+        (img (car (gimp-image-new width height GRAY)))
+        (drawable (car (gimp-layer-new img
+                                       width height GRAY-IMAGE
+                                       "MakeBrush" 100 LAYER-MODE-NORMAL)))
+        (filename (string-append gimp-directory
+                                 "/brushes/e"
+                                 (number->string width)
+                                 "x"
+                                 (number->string height)
+                                 ".gbr"))
+        )
+
+    (gimp-context-push)
+    (gimp-context-set-antialias TRUE)
+    (gimp-context-set-feather FALSE)
+
+    (gimp-image-undo-disable img)
+    (gimp-image-insert-layer img drawable 0 0)
+
+    (gimp-context-set-background '(255 255 255))
+    (gimp-drawable-fill drawable FILL-BACKGROUND)
+    (gimp-context-set-background '(0 0 0))
+    (gimp-image-select-ellipse img CHANNEL-OP-REPLACE 0 0 width height)
+
+    (gimp-drawable-edit-fill drawable FILL-BACKGROUND)
+
+    (file-gbr-save 1 img drawable filename "" spacing name)
+    (gimp-image-delete img)
+
+    (gimp-context-pop)
+
+    (gimp-brushes-refresh)
+    (gimp-context-set-brush name)
+  )
+)
+
+(script-fu-register "script-fu-make-brush-elliptical"
+  _"_Elliptical..."
+  _"Create an elliptical brush"
+  "Seth Burgess <sjburges@ou.edu>"
+  "Seth Burgess"
+  "1997"
+  ""
+  SF-STRING     _"Name"    "Ellipse"
+  SF-ADJUSTMENT _"Width"   '(20 1 200 1 10 0 1)
+  SF-ADJUSTMENT _"Height"  '(20 1 200 1 10 0 1)
+  SF-ADJUSTMENT _"Spacing" '(25 1 100 1 10 1 0)
+)
+
+(script-fu-menu-register "script-fu-make-brush-elliptical"
+                         "<Brushes>")
+
+
+(define (script-fu-make-brush-elliptical-feathered name
+                                                   width height
+                                                   feathering spacing)
+  (let* (
+        (widthplus (+ feathering width)) ; add 3 for blurring
+        (heightplus (+ feathering height))
+        (img (car (gimp-image-new widthplus heightplus GRAY)))
+        (drawable (car (gimp-layer-new img
+                                       widthplus heightplus GRAY-IMAGE
+                                       "MakeBrush" 100 LAYER-MODE-NORMAL)))
+        (filename (string-append gimp-directory
+                                 "/brushes/e"
+                                 (number->string width)
+                                 "x"
+                                 (number->string height)
+                                 "f"
+                                 (number->string feathering)
+                                 ".gbr"))
+        )
+
+    (gimp-context-push)
+    (gimp-context-set-antialias TRUE)
+
+    (gimp-image-undo-disable img)
+    (gimp-image-insert-layer img drawable 0 0)
+
+    (gimp-context-set-background '(255 255 255))
+    (gimp-drawable-fill drawable FILL-BACKGROUND)
+
+    (cond ((> feathering 0)   ; keep from taking out gimp with stupid entry.
+        (gimp-context-set-feather TRUE)
+        (gimp-context-set-feather-radius feathering feathering)
+        (gimp-image-select-ellipse img CHANNEL-OP-REPLACE
+           (/ feathering 2) (/ feathering 2)
+           width height))
+          ((<= feathering 0)
+        (gimp-context-set-feather FALSE)
+        (gimp-image-select-ellipse img CHANNEL-OP-REPLACE 0 0 width height)))
+
+    (gimp-context-set-background '(0 0 0))
+    (gimp-drawable-edit-fill drawable FILL-BACKGROUND)
+
+    (file-gbr-save 1 img drawable filename "" spacing name)
+    (gimp-image-delete img)
+
+    (gimp-context-pop)
+
+    (gimp-brushes-refresh)
+    (gimp-context-set-brush name)
+  )
+)
+
+(script-fu-register "script-fu-make-brush-elliptical-feathered"
+  _"Elli_ptical, Feathered..."
+  _"Create an elliptical brush with feathered edges"
+  "Seth Burgess <sjburges@ou.edu>"
+  "Seth Burgess"
+  "1997"
+  ""
+  SF-STRING     _"Name"       "Ellipse"
+  SF-ADJUSTMENT _"Width"      '(20 1 200 1 10 0 1)
+  SF-ADJUSTMENT _"Height"     '(20 1 200 1 10 0 1)
+  SF-ADJUSTMENT _"Feathering" '(4 1 100 1 10 0 1)
+  SF-ADJUSTMENT _"Spacing"    '(25 1 100 1 10 1 0)
+)
+
+(script-fu-menu-register "script-fu-make-brush-elliptical-feathered"
+                         "<Brushes>")
diff --git a/plug-ins/script-fu/scripts/old-photo.scm b/plug-ins/script-fu/scripts/old-photo.scm
new file mode 100644
index 0000000..110c313
--- /dev/null
+++ b/plug-ins/script-fu/scripts/old-photo.scm
@@ -0,0 +1,108 @@
+;
+; old-photo
+;
+;
+; Chris Gutteridge (cjg@ecs.soton.ac.uk)
+; At ECS Dept, University of Southampton, England.
+
+; This program is free software: you can redistribute it and/or modify
+; it under the terms of the GNU General Public License as published by
+; the Free Software Foundation; either version 3 of the License, or
+; (at your option) any later version.
+;
+; This program is distributed in the hope that it will be useful,
+; but WITHOUT ANY WARRANTY; without even the implied warranty of
+; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+; GNU General Public License for more details.
+;
+; You should have received a copy of the GNU General Public License
+; along with this program.  If not, see <https://www.gnu.org/licenses/>.
+;
+; Branko Collin <collin@xs4all.nl> added the possibility to change
+; the border size in October 2001.
+
+; Define the function:
+
+(define (script-fu-old-photo inImage inLayer inDefocus inBorderSize inSepia inMottle inCopy)
+  (let (
+       (theImage (if (= inCopy TRUE) (car (gimp-image-duplicate inImage)) inImage))
+       (theLayer 0)
+       (theWidth 0)
+       (theHeight 0)
+       )
+  (if (= inCopy TRUE)
+     (gimp-image-undo-disable theImage)
+     (gimp-image-undo-group-start theImage)
+  )
+
+  (gimp-selection-all theImage)
+
+  (set! theLayer (car (gimp-image-flatten theImage)))
+  (if (= inDefocus TRUE)
+      (plug-in-gauss-rle RUN-NONINTERACTIVE theImage theLayer 1.5 TRUE TRUE)
+  )
+  (if (> inBorderSize 0)
+      (script-fu-fuzzy-border theImage theLayer '(255 255 255)
+                              inBorderSize TRUE 8 FALSE 100 FALSE TRUE )
+  )
+  (set! theLayer (car (gimp-image-flatten theImage)))
+
+  (if (= inSepia TRUE)
+      (begin (gimp-drawable-desaturate theLayer DESATURATE-LIGHTNESS)
+             (gimp-drawable-brightness-contrast theLayer -0.078125 -0.15625)
+             (gimp-drawable-color-balance theLayer TRANSFER-SHADOWS TRUE 30 0 -30)
+      )
+  )
+  (set! theWidth (car (gimp-image-width theImage)))
+  (set! theHeight (car (gimp-image-height theImage)))
+  (if (= inMottle TRUE)
+      (let (
+	    (mLayer (car (gimp-layer-new theImage theWidth theHeight
+					 RGBA-IMAGE "Mottle"
+					 100 LAYER-MODE-DARKEN-ONLY)))
+	    )
+
+             (gimp-image-insert-layer theImage mLayer 0 0)
+             (gimp-selection-all theImage)
+             (gimp-drawable-edit-clear mLayer)
+             (gimp-selection-none theImage)
+             (plug-in-noisify RUN-NONINTERACTIVE theImage mLayer TRUE 0 0 0 0.5)
+             (plug-in-gauss-rle RUN-NONINTERACTIVE theImage mLayer 5 TRUE TRUE)
+             (set! theLayer (car (gimp-image-flatten theImage)))
+      )
+  )
+  (gimp-selection-none theImage)
+
+  (if (= inCopy TRUE)
+      (begin  (gimp-image-clean-all theImage)
+              (gimp-display-new theImage)
+              (gimp-image-undo-enable theImage)
+      )
+      (gimp-image-undo-group-end theImage)
+  )
+
+  (gimp-displays-flush theImage)
+  )
+)
+
+(script-fu-register "script-fu-old-photo"
+  _"_Old Photo..."
+  _"Make an image look like an old photo"
+  "Chris Gutteridge"
+  "1998, Chris Gutteridge / ECS dept, University of Southampton, England."
+  "16th April 1998"
+  "RGB* GRAY*"
+  SF-IMAGE      "The image"     0
+  SF-DRAWABLE   "The layer"     0
+  SF-TOGGLE     _"Defocus"      TRUE
+  SF-ADJUSTMENT _"Border size"  '(20 0 300 1 10 0 1)
+     ; since this plug-in uses the fuzzy-border plug-in, I used the
+     ; values of the latter, with the exception of the initial value
+     ; and the 'minimum' value.
+  SF-TOGGLE     _"Sepia"        TRUE
+  SF-TOGGLE     _"Mottle"       FALSE
+  SF-TOGGLE     _"Work on copy" TRUE
+)
+
+(script-fu-menu-register "script-fu-old-photo"
+                         "<Image>/Filters/Decor")
diff --git a/plug-ins/script-fu/scripts/palette-export.scm b/plug-ins/script-fu/scripts/palette-export.scm
new file mode 100644
index 0000000..ecb16df
--- /dev/null
+++ b/plug-ins/script-fu/scripts/palette-export.scm
@@ -0,0 +1,402 @@
+; -----------------------------------------------------------------------------
+; GIMP palette export toolkit -
+; Written by Barak Itkin <lightningismyname@gmail.com>
+;
+; This script includes various exporters for GIMP palettes, and other
+; utility function to help in exporting to other (text-based) formats.
+; See instruction on adding new exporters at the end
+;
+; -----------------------------------------------------------------------------
+; Numbers and Math
+; -----------------------------------------------------------------------------
+
+; For all the operations below, this is the order of respectable digits:
+(define conversion-digits (list "0" "1" "2" "3" "4" "5" "6" "7" "8" "9"
+                                "a" "b" "c" "d" "e" "f" "g" "h" "i" "j" "k"
+				"l" "m" "n" "o" "p" "q" "r" "s" "t" "u" "v"
+				"w" "x" "y" "z"))
+
+; Converts a decimal number to another base. The returned number is a string
+(define (convert-decimal-to-base num base)
+  (if (< num base) 
+    (list-ref conversion-digits num) 
+    (let loop ((val num)
+               (order (inexact->exact (truncate (/ (log num) 
+                                                   (log base)))))
+               (result ""))
+      (let* ((power (expt base order))
+             (digit (quotient val power)))
+        (if (zero? order)
+          (string-append result (list-ref conversion-digits digit)) 
+          (loop (- val (* digit power))
+                (pred order)
+                (string-append result (list-ref conversion-digits digit))))))))
+
+; Convert a string representation of a number in some base, to a decimal number
+(define (convert-base-to-decimal base num-str)
+  (define (convert-char num-char)
+    (if (char-numeric? num-char)
+        (string->number (string num-char))
+        (+ 10 (- (char->integer num-char) (char->integer #\a)))
+        )
+    )
+  (define (calc base num-str num)
+    (if (equal? num-str "")
+        num
+        (calc base
+              (substring num-str 1)
+              (+ (* num base) (convert-char (string-ref num-str 0)))
+              )
+        )
+    )
+  (calc base num-str 0)
+  )
+
+; If a string num-str is shorter then size, pad it with pad-str in the
+; beginning until it's at least size long
+(define (pre-pad-number num-str size pad-str)
+  (if (< (string-length num-str) size)
+      (pre-pad-number (string-append pad-str num-str) size pad-str)
+      num-str
+      )
+  )
+
+; -----------------------------------------------------------------------------
+; Color convertors
+; -----------------------------------------------------------------------------
+
+; The standard way for representing a color would be a list of red
+; green and blue (GIMP's default)
+(define color-get-red car)
+(define color-get-green cadr)
+(define color-get-blue caddr)
+
+; Convert a color to a hexadecimal string
+; '(255 255 255) => "#ffffff"
+
+(define (color-rgb-to-hexa-decimal color)
+  (string-append "#"
+                 (pre-pad-number
+		  (convert-decimal-to-base (color-get-red color) 16) 2 "0")
+                 (pre-pad-number
+		  (convert-decimal-to-base (color-get-green color) 16) 2 "0")
+                 (pre-pad-number
+		  (convert-decimal-to-base (color-get-blue color) 16) 2 "0")
+                 )
+  )
+
+; Convert a color to a css color
+; '(255 255 255) => "rgb(255, 255, 255)"
+(define (color-rgb-to-css color)
+  (string-append "rgb(" (number->string (color-get-red color))
+                 ", " (number->string (color-get-green color))
+                 ", " (number->string (color-get-blue color)) ")")
+  )
+
+; Convert a color to a simple pair of braces with comma separated values
+; '(255 255 255) => "(255, 255, 255)"
+(define (color-rgb-to-comma-seperated-list color)
+  (string-append "(" (number->string (color-get-red color))
+                 ", " (number->string (color-get-green color))
+                 ", " (number->string (color-get-blue color)) ")")
+  )
+
+
+; -----------------------------------------------------------------------------
+; Export utils
+; -----------------------------------------------------------------------------
+
+; List of characters that should not appear in file names
+(define illegal-file-name-chars (list #\\ #\/ #\: #\* #\? #\" #\< #\> #\|))
+
+; A function to filter a list lst by a given predicate pred
+(define (filter pred lst)
+  (if (null? lst)
+      '()
+      (if (pred (car lst))
+          (cons (car lst) (filter pred (cdr lst)))
+          (filter pred (cdr lst))
+          )
+      )
+  )
+
+; A function to check if a certain value obj is inside a list lst
+(define (contained? obj lst) (member obj lst))
+
+; This functions filters a string to have only characters which are
+; either alpha-numeric or contained in more-legal (which is a variable
+; holding a list of characters)
+(define (clean str more-legal)
+  (list->string (filter (lambda (ch) (or (char-alphabetic? ch)
+                                         (char-numeric? ch)
+                                         (contained? ch more-legal)))
+                        (string->list str)))
+  )
+
+; A function that receives the a file-name, and filters out all the
+; character that shouldn't appear in file names. Then, it makes sure
+; the remaining name isn't only white-spaces. If it's only
+; white-spaces, the function returns false. Otherwise, it returns the
+; fixed file-name
+(define (valid-file-name name)
+  (let* ((clean (list->string (filter (lambda (ch)
+					(not (contained?
+					      ch illegal-file-name-chars)))
+                                      (string->list name))))
+         (clean-without-spaces (list->string (filter (lambda (ch)
+						       (not (char-whitespace?
+							     ch)))
+                                                     (string->list clean))))
+         )
+    (if (equal? clean-without-spaces "")
+        #f
+        clean
+        )
+    )
+  )
+
+; Filters a string from all the characters which are not alpha-numeric
+; (this also removes whitespaces)
+(define (name-alpha-numeric str)
+  (clean str '())
+  )
+
+; This function does the same as name-alpha-numeric, with an added
+; operation - it removes any numbers from the beginning
+(define (name-standard str)
+  (let ((cleaned (clean str '())))
+    (while (char-numeric? (string-ref cleaned 0))
+           (set! cleaned (substring cleaned 1))
+           )
+    cleaned
+    )
+  )
+
+(define name-no-conversion (lambda (obj) obj))
+(define color-none (lambda (x) ""))
+(define name-none (lambda (x) ""))
+
+(define displayln (lambda (obj) (display obj) (display "\n")))
+
+; The loop for exporting all the colors
+(define (export-palette palette-name color-convertor name-convertor
+                        start name-pre name-after name-color-seperator
+                        color-pre color-after entry-seperator end)
+
+  (define (write-color-line index)
+    (display name-pre)
+    (display (name-convertor
+	      (car (gimp-palette-entry-get-name palette-name index))))
+    (display name-after)
+    (display name-color-seperator)
+    (display color-pre)
+    (display (color-convertor
+	      (car (gimp-palette-entry-get-color palette-name index))))
+    (display color-after)
+    )
+
+  (let ((color-count (car (gimp-palette-get-colors palette-name)))
+        (i 0)
+        )
+
+    (display start)
+
+    (while (< i (- color-count 1))
+           (begin
+             (write-color-line i)
+             (display entry-seperator)
+             (set! i (+ 1 i))
+             )
+           )
+
+    (write-color-line i)
+    (display end)
+    )
+  )
+
+(define (register-palette-exporter
+	 export-type export-name file-type description author copyright date)
+  (script-fu-register (string-append "gimp-palette-export-" export-type)
+                      export-name
+                      description
+                      author
+                      copyright
+                      date
+                      ""
+                      SF-DIRNAME _"Folder for the output file" ""
+                      SF-STRING _"The name of the file to create (if a file with this name already exist, it will be replaced)"
+                      (string-append "palette." file-type)
+                      )
+  (script-fu-menu-register (string-append "gimp-palette-export-" export-type)
+                           "<Palettes>/Export as")
+  )
+
+(define (bad-file-name)
+  (gimp-message (string-append _"The filename you entered is not a suitable name for a file."
+			       "\n\n"
+			       _"All characters in the name are either white-spaces or characters which can not appear in filenames.")))
+
+; -----------------------------------------------------------------------------
+; Exporters
+; -----------------------------------------------------------------------------
+
+(define (gimp-palette-export-css directory-name file-name)
+  (let ((valid-name (valid-file-name file-name)))
+    (if valid-name
+        (with-output-to-file (string-append
+			      directory-name DIR-SEPARATOR file-name)
+          (lambda () (export-palette (car (gimp-context-get-palette))
+                                     color-rgb-to-css
+                                     name-alpha-numeric        ; name-convertor
+                                     "/* Generated with GIMP Palette Export */\n" ; start
+                                     "."                       ; name-pre
+                                     ""                        ; name-after
+                                     " { "                     ; name-color-seperator
+                                     "color: "                 ; color-pre
+                                     " }"                      ; color-after
+                                     "\n"                      ; entry-seperator
+                                     ""                        ; end
+                                     )))
+        (bad-file-name)
+        )
+    )
+  )
+(register-palette-exporter "css" "_CSS stylesheet..." "css"
+                           (string-append _"Export the active palette as a CSS stylesheet with the color entry name as their class name, and the color itself as the color attribute")
+                           "Barak Itkin <lightningismyname@gmail.com>"
+			   "Barak Itkin" "May 15th, 2009")
+
+(define (gimp-palette-export-php directory-name file-name)
+  (let ((valid-name (valid-file-name file-name)))
+    (if valid-name
+        (with-output-to-file (string-append
+			      directory-name DIR-SEPARATOR file-name)
+          (lambda () (export-palette (car (gimp-context-get-palette))
+                                     color-rgb-to-hexa-decimal
+                                     name-standard             ; name-convertor
+                                     "<?php\n/* Generated with GIMP Palette Export */\n$colors={\n" ; start
+                                     "'"                       ; name-pre
+                                     "'"                       ; name-after
+                                     " => "                    ; name-color-seperator
+                                     "'"                       ; color-pre
+                                     "'"                       ; color-after
+                                     ",\n"                     ; entry-seperator
+                                     "}\n?>"                 ; end
+                                     )))
+        (bad-file-name)
+        )
+    )
+  )
+(register-palette-exporter "php" "P_HP dictionary..." "php"
+                           _"Export the active palette as a PHP dictionary (name => color)"
+                           "Barak Itkin <lightningismyname@gmail.com>"
+			   "Barak Itkin" "May 15th, 2009")
+
+(define (gimp-palette-export-python directory-name file-name)
+  (let ((valid-name (valid-file-name file-name)))
+    (if valid-name
+        (with-output-to-file (string-append
+			      directory-name DIR-SEPARATOR file-name)
+          (lambda ()
+            (let ((palette-name (car (gimp-context-get-palette))))
+              (begin (displayln "# Generated with GIMP Palette Export")
+                     (displayln (string-append
+				 "# Based on the palette " palette-name))
+                     (export-palette palette-name
+                                     color-rgb-to-hexa-decimal
+                                     name-standard             ; name-convertor
+                                     "colors={\n"              ; start
+                                     "'"                       ; name-pre
+                                     "'"                       ; name-after
+                                     ": "                      ; name-color-seperator
+                                     "'"                       ; color-pre
+                                     "'"                       ; color-after
+                                     ",\n"                     ; entry-seperator
+                                     "}"                       ; end
+                                     ))))
+          )
+        (bad-file-name)
+        )
+    )
+  )
+(register-palette-exporter "python" "_Python dictionary" "py"
+                           _"Export the active palette as a Python dictionary (name: color)"
+                           "Barak Itkin <lightningismyname@gmail.com>"
+			   "Barak Itkin" "May 15th, 2009")
+
+(define (gimp-palette-export-text directory-name file-name)
+  (let ((valid-name (valid-file-name file-name)))
+    (if valid-name
+        (with-output-to-file (string-append
+			      directory-name DIR-SEPARATOR file-name)
+          (lambda ()
+            (export-palette (car (gimp-context-get-palette))
+                            color-rgb-to-hexa-decimal
+                            name-none                 ; name-convertor
+                            ""                        ; start
+                            ""                        ; name-pre
+                            ""                        ; name-after
+                            ""                        ; name-color-seperator
+                            ""                        ; color-pre
+                            ""                        ; color-after
+                            "\n"                      ; entry-seperator
+                            ""                        ; end
+                            )
+            )
+          )
+        (bad-file-name)
+        )
+    )
+  )
+(register-palette-exporter "text" "_Text file..." "txt"
+                           _"Write all the colors in a palette to a text file, one hexadecimal value per line (no names)"
+                           "Barak Itkin <lightningismyname@gmail.com>"
+			   "Barak Itkin" "May 15th, 2009")
+
+(define (gimp-palette-export-java directory-name file-name)
+  (let ((valid-name (valid-file-name file-name)))
+    (if valid-name
+        (with-output-to-file (string-append directory-name
+					    DIR-SEPARATOR file-name)
+          (lambda ()
+            (let ((palette-name (car (gimp-context-get-palette))))
+              (begin (displayln "")
+                     (displayln "import java.awt.Color;")
+                     (displayln "import java.util.Hashtable;")
+                     (displayln "")
+                     (displayln "// Generated with GIMP palette Export ")
+                     (displayln (string-append
+				 "// Based on the palette " palette-name))
+                     (displayln (string-append
+				 "public class "
+				 (name-standard palette-name) " {"))
+                     (displayln "")
+                     (displayln "    Hashtable<String, Color> colors;")
+                     (displayln "")
+                     (displayln (string-append
+				 "    public "
+				 (name-standard palette-name) "() {"))
+                     (export-palette (car (gimp-context-get-palette))
+                                     color-rgb-to-comma-seperated-list
+                                     name-no-conversion
+                                     "        colors = new Hashtable<String,Color>();\n" ; start
+                                     "        colors.put(\""                             ; name-pre
+                                     "\""                                                ; name-after
+                                     ", "                                                ; name-color-seperator
+                                     "new Color"                                         ; color-pre
+                                     ");"                                                ; color-after
+                                     "\n"                                                ; entry-seperator
+                                     "\n    }"                                           ; end
+                                     )
+                     (display "\n}"))))
+          )
+        (bad-file-name)
+        )
+    )
+  )
+
+(register-palette-exporter "java" "J_ava map..." "java"
+                           _"Export the active palette as a java.util.Hashtable<String, Color>"
+                           "Barak Itkin <lightningismyname@gmail.com>"
+			   "Barak Itkin" "May 15th, 2009")
+
diff --git a/plug-ins/script-fu/scripts/paste-as-brush.scm b/plug-ins/script-fu/scripts/paste-as-brush.scm
new file mode 100644
index 0000000..062e97d
--- /dev/null
+++ b/plug-ins/script-fu/scripts/paste-as-brush.scm
@@ -0,0 +1,74 @@
+; GIMP - The GNU Image Manipulation Program
+; Copyright (C) 1995 Spencer Kimball and Peter Mattis
+;
+; script-fu-paste-as-brush
+; Based on select-to-brush by Copyright (c) 1997 Adrian Likins
+;
+; This program is free software: you can redistribute it and/or modify
+; it under the terms of the GNU General Public License as published by
+; the Free Software Foundation; either version 3 of the License, or
+; (at your option) any later version.
+;
+; This program is distributed in the hope that it will be useful,
+; but WITHOUT ANY WARRANTY; without even the implied warranty of
+; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+; GNU General Public License for more details.
+;
+; You should have received a copy of the GNU General Public License
+; along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+
+(define (script-fu-paste-as-brush name filename spacing)
+
+  (let* ((brush-image (car (gimp-edit-paste-as-new-image)))
+         (brush-draw 0)
+         (type 0)
+         (path 0))
+
+    (if (= TRUE (car (gimp-image-is-valid brush-image)))
+      (begin
+        (set! brush-draw (car (gimp-image-get-active-drawable brush-image)))
+        (set! type (car (gimp-drawable-type brush-draw)))
+        (set! path (string-append gimp-directory
+                                  "/brushes/"
+                                  filename
+                                  (number->string brush-image)
+                                  ".gbr"))
+       
+        (if (= type GRAYA-IMAGE)
+            (begin
+                (gimp-context-push)
+                (gimp-context-set-background '(255 255 255))
+                (set! brush-draw (car (gimp-image-flatten brush-image)))
+                (gimp-context-pop)
+            )
+        )
+       
+        (file-gbr-save RUN-NONINTERACTIVE
+                       brush-image brush-draw path path
+                       spacing name)
+       
+        (gimp-image-delete brush-image)
+       
+        (gimp-brushes-refresh)
+        (gimp-context-set-brush name)
+      )
+      (gimp-message _"There is no image data in the clipboard to paste.")
+    )
+  )
+)
+
+(script-fu-register "script-fu-paste-as-brush"
+  _"New _Brush..."
+  _"Paste the clipboard contents into a new brush"
+  "Michael Natterer <mitch@gimp.org>"
+  "Michael Natterer"
+  "2005-09-25"
+  ""
+  SF-STRING     _"_Brush name" "My Brush"
+  SF-STRING     _"_File name"  "mybrush"
+  SF-ADJUSTMENT _"_Spacing"    '(25 0 1000 1 1 1 0)
+)
+
+(script-fu-menu-register "script-fu-paste-as-brush"
+                         "<Image>/Edit/Paste as")
diff --git a/plug-ins/script-fu/scripts/paste-as-pattern.scm b/plug-ins/script-fu/scripts/paste-as-pattern.scm
new file mode 100644
index 0000000..01381a2
--- /dev/null
+++ b/plug-ins/script-fu/scripts/paste-as-pattern.scm
@@ -0,0 +1,61 @@
+; GIMP - The GNU Image Manipulation Program
+; Copyright (C) 1995 Spencer Kimball and Peter Mattis
+;
+; script-fu-paste-as-pattern
+; Based on select-to-pattern by Cameron Gregory, http://www.flamingtext.com/
+;
+; This program is free software: you can redistribute it and/or modify
+; it under the terms of the GNU General Public License as published by
+; the Free Software Foundation; either version 3 of the License, or
+; (at your option) any later version.
+;
+; This program is distributed in the hope that it will be useful,
+; but WITHOUT ANY WARRANTY; without even the implied warranty of
+; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+; GNU General Public License for more details.
+;
+; You should have received a copy of the GNU General Public License
+; along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+
+(define (script-fu-paste-as-pattern name filename)
+  (let* ((pattern-image (car (gimp-edit-paste-as-new-image)))
+         (pattern-draw 0)
+         (path 0))
+
+    (if (= TRUE (car (gimp-image-is-valid pattern-image)))
+      (begin
+        (set! pattern-draw (car (gimp-image-get-active-drawable pattern-image)))
+        (set! path (string-append gimp-directory
+                             "/patterns/"
+                             filename
+                             (number->string pattern-image)
+                             ".pat"))
+       
+        (file-pat-save RUN-NONINTERACTIVE
+                       pattern-image pattern-draw path path
+                       name)
+       
+        (gimp-image-delete pattern-image)
+       
+        (gimp-patterns-refresh)
+        (gimp-context-set-pattern name)
+      )
+      (gimp-message _"There is no image data in the clipboard to paste.")
+    )
+  )
+)
+
+(script-fu-register "script-fu-paste-as-pattern"
+  _"New _Pattern..."
+  _"Paste the clipboard contents into a new pattern"
+  "Michael Natterer <mitch@gimp.org>"
+  "Michael Natterer"
+  "2005-09-25"
+  ""
+  SF-STRING _"_Pattern name" "My Pattern"
+  SF-STRING _"_File name"    "mypattern"
+)
+
+(script-fu-menu-register "script-fu-paste-as-pattern"
+                         "<Image>/Edit/Paste as")
diff --git a/plug-ins/script-fu/scripts/perspective-shadow.scm b/plug-ins/script-fu/scripts/perspective-shadow.scm
new file mode 100644
index 0000000..1eb40e3
--- /dev/null
+++ b/plug-ins/script-fu/scripts/perspective-shadow.scm
@@ -0,0 +1,217 @@
+; GIMP - The GNU Image Manipulation Program
+; Copyright (C) 1995 Spencer Kimball and Peter Mattis
+;
+; This program is free software: you can redistribute it and/or modify
+; it under the terms of the GNU General Public License as published by
+; the Free Software Foundation; either version 3 of the License, or
+; (at your option) any later version.
+;
+; This program is distributed in the hope that it will be useful,
+; but WITHOUT ANY WARRANTY; without even the implied warranty of
+; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+; GNU General Public License for more details.
+;
+; You should have received a copy of the GNU General Public License
+; along with this program.  If not, see <https://www.gnu.org/licenses/>.
+;
+;
+; perspective-shadow.scm   version 1.2   2000/11/08
+;
+; Copyright (C) 1997-2000 Sven Neumann <sven@gimp.org>
+;
+;
+; Adds a perspective shadow of the current selection or alpha-channel
+; as a layer below the active layer
+;
+
+(define (script-fu-perspective-shadow image
+                                      drawable
+                                      alpha
+                                      rel-distance
+                                      rel-length
+                                      shadow-blur
+                                      shadow-color
+                                      shadow-opacity
+                                      interpolation
+                                      allow-resize)
+  (let* (
+        (shadow-blur (max shadow-blur 0))
+        (shadow-opacity (min shadow-opacity 100))
+        (shadow-opacity (max shadow-opacity 0))
+        (rel-length (abs rel-length))
+        (alpha (* (/ alpha 180) *pi*))
+        (type (car (gimp-drawable-type-with-alpha drawable)))
+        (image-width (car (gimp-image-width image)))
+        (image-height (car (gimp-image-height image)))
+        (from-selection 0)
+        (active-selection 0)
+        (shadow-layer 0)
+        )
+
+    (gimp-context-push)
+    (gimp-context-set-defaults)
+
+    (if (> rel-distance 24) (set! rel-distance 999999))
+    (if (= rel-distance rel-length) (set! rel-distance (+ rel-distance 0.01)))
+
+    (gimp-image-undo-group-start image)
+
+    (gimp-layer-add-alpha drawable)
+    (if (= (car (gimp-selection-is-empty image)) TRUE)
+        (begin
+          (gimp-image-select-item image CHANNEL-OP-REPLACE drawable)
+          (set! from-selection FALSE))
+        (begin
+          (set! from-selection TRUE)
+          (set! active-selection (car (gimp-selection-save image)))))
+
+    (let* ((selection-bounds (gimp-selection-bounds image))
+           (select-offset-x (cadr selection-bounds))
+           (select-offset-y (caddr selection-bounds))
+           (select-width (- (cadr (cddr selection-bounds)) select-offset-x))
+           (select-height (- (caddr (cddr selection-bounds)) select-offset-y))
+
+           (abs-length (* rel-length select-height))
+           (abs-distance (* rel-distance select-height))
+           (half-bottom-width (/ select-width 2))
+           (half-top-width (* half-bottom-width
+                            (/ (- rel-distance rel-length) rel-distance)))
+
+           (x0 (+ select-offset-x (+ (- half-bottom-width half-top-width)
+                                   (* (cos alpha) abs-length))))
+           (y0 (+ select-offset-y (- select-height
+                                   (* (sin alpha) abs-length))))
+           (x1 (+ x0 (* 2 half-top-width)))
+           (y1 y0)
+           (x2 select-offset-x)
+           (y2 (+ select-offset-y select-height))
+           (x3 (+ x2 select-width))
+           (y3 y2)
+
+           (shadow-width (+ (- (max x1 x3) (min x0 x2)) (* 2 shadow-blur)))
+           (shadow-height (+ (- (max y1 y3) (min y0 y2)) (* 2 shadow-blur)))
+           (shadow-offset-x (- (min x0 x2) shadow-blur))
+           (shadow-offset-y (- (min y0 y2) shadow-blur)))
+
+
+      (set! shadow-layer (car (gimp-layer-new image
+                                              select-width
+                                              select-height
+                                              type
+                                              "Perspective Shadow"
+                                              shadow-opacity
+                                              LAYER-MODE-NORMAL)))
+
+
+      (gimp-image-insert-layer image shadow-layer 0 -1)
+      (gimp-layer-set-offsets shadow-layer select-offset-x select-offset-y)
+      (gimp-drawable-fill shadow-layer FILL-TRANSPARENT)
+      (gimp-context-set-background shadow-color)
+      (gimp-drawable-edit-fill shadow-layer FILL-BACKGROUND)
+      (gimp-selection-none image)
+
+      (if (= allow-resize TRUE)
+          (let* ((new-image-width image-width)
+                 (new-image-height image-height)
+                 (image-offset-x 0)
+                 (image-offset-y 0))
+
+            (if (< shadow-offset-x 0)
+                (begin
+                  (set! image-offset-x (abs shadow-offset-x))
+                  (set! new-image-width (+ new-image-width image-offset-x))
+                  ; adjust to new coordinate system
+                  (set! x0 (+ x0 image-offset-x))
+                  (set! x1 (+ x1 image-offset-x))
+                  (set! x2 (+ x2 image-offset-x))
+                  (set! x3 (+ x3 image-offset-x))
+                ))
+
+            (if (< shadow-offset-y 0)
+                (begin
+                  (set! image-offset-y (abs shadow-offset-y))
+                  (set! new-image-height (+ new-image-height image-offset-y))
+                  ; adjust to new coordinate system
+                  (set! y0 (+ y0 image-offset-y))
+                  (set! y1 (+ y1 image-offset-y))
+                  (set! y2 (+ y2 image-offset-y))
+                  (set! y3 (+ y3 image-offset-y))
+                ))
+
+            (if (> (+ shadow-width shadow-offset-x) new-image-width)
+                (set! new-image-width (+ shadow-width shadow-offset-x)))
+
+            (if (> (+ shadow-height shadow-offset-y) new-image-height)
+                (set! new-image-height (+ shadow-height shadow-offset-y)))
+            (gimp-image-resize image
+                               new-image-width
+                               new-image-height
+                               image-offset-x
+                               image-offset-y)))
+
+      (gimp-context-set-transform-direction TRANSFORM-FORWARD)
+      (gimp-context-set-interpolation interpolation)
+      (gimp-context-set-transform-recursion 3)
+      (gimp-context-set-transform-resize TRANSFORM-RESIZE-ADJUST)
+
+      (gimp-item-transform-perspective shadow-layer
+                        x0 y0
+                        x1 y1
+                        x2 y2
+                        x3 y3)
+
+      (if (>= shadow-blur 1.0)
+          (begin
+            (gimp-layer-set-lock-alpha shadow-layer FALSE)
+            (gimp-layer-resize shadow-layer
+                               shadow-width
+                               shadow-height
+                               shadow-blur
+                               shadow-blur)
+            (plug-in-gauss-rle RUN-NONINTERACTIVE
+                               image
+                               shadow-layer
+                               shadow-blur
+                               TRUE
+                               TRUE))))
+
+    (if (= from-selection TRUE)
+        (begin
+          (gimp-image-select-item image CHANNEL-OP-REPLACE active-selection)
+          (gimp-drawable-edit-clear shadow-layer)
+          (gimp-image-remove-channel image active-selection)))
+
+    (if (and
+          (= (car (gimp-layer-is-floating-sel drawable)) 0)
+          (= from-selection FALSE))
+      (gimp-image-raise-item image drawable))
+
+    (gimp-image-set-active-layer image drawable)
+    (gimp-image-undo-group-end image)
+    (gimp-displays-flush)
+
+    (gimp-context-pop)
+  )
+)
+
+(script-fu-register "script-fu-perspective-shadow"
+  _"_Perspective..."
+  _"Add a perspective shadow to the selected region (or alpha)"
+  "Sven Neumann <sven@gimp.org>"
+  "Sven Neumann"
+  "2000/11/08"
+  "RGB* GRAY*"
+  SF-IMAGE       "Image"                        0
+  SF-DRAWABLE    "Drawable"                     0
+  SF-ADJUSTMENT _"Angle"                        '(45 0 180 1 10 1 0)
+  SF-ADJUSTMENT _"Relative distance of horizon" '(5 0.1 24.1 0.1 1 1 1)
+  SF-ADJUSTMENT _"Relative length of shadow"    '(1 0.1 24   0.1 1 1 1)
+  SF-ADJUSTMENT _"Blur radius"                  '(3 0 1024 1 10 0 0)
+  SF-COLOR      _"Color"                        '(0 0 0)
+  SF-ADJUSTMENT _"Opacity"                      '(80 0 100 1 10 0 0)
+  SF-ENUM       _"Interpolation"                '("InterpolationType" "linear")
+  SF-TOGGLE     _"Allow resizing"               FALSE
+)
+
+(script-fu-menu-register "script-fu-perspective-shadow"
+                         "<Image>/Filters/Light and Shadow/Shadow")
diff --git a/plug-ins/script-fu/scripts/plug-in-compat.init b/plug-ins/script-fu/scripts/plug-in-compat.init
new file mode 100644
index 0000000..dd68c2c
--- /dev/null
+++ b/plug-ins/script-fu/scripts/plug-in-compat.init
@@ -0,0 +1,24 @@
+; The Scheme code in this file provides some compatibility with
+; scripts that were originally written for use with older versions of
+; GIMP.
+;
+; It provides PDB procedures that used to be provided by plug-ins that
+; were since then removed from the GIMP distribution. You should not
+; use these in newly written scripts as the functions defined here may
+; be removed at some later date.
+
+
+(define (plug-in-color-map run-mode img layer
+			   src-color-1 src-color-2 dest-color-1 dest-color-2
+			   map-mode)
+  (gimp-levels layer HISTOGRAM-RED
+	       (car src-color-1) (car src-color-2) 1.0
+	       (- 255 (car dest-color-1)) (- 255 (car dest-color-2)))
+  (gimp-levels layer  HISTOGRAM-GREEN
+	       (cadr 	src-color-1) (cadr src-color-2) 1.0
+	       (- 255 (cadr dest-color-1)) (- 255 (cadr dest-color-2)))
+  (gimp-levels layer HISTOGRAM-BLUE
+	       (caddr src-color-1) (caddr src-color-2) 1.0
+	       (- 255 (caddr dest-color-1)) (- 255 (caddr dest-color-2)))
+  (gimp-levels layer HISTOGRAM-VALUE 0 255 1.0 255 0)
+)
diff --git a/plug-ins/script-fu/scripts/predator.scm b/plug-ins/script-fu/scripts/predator.scm
new file mode 100644
index 0000000..cd1ab14
--- /dev/null
+++ b/plug-ins/script-fu/scripts/predator.scm
@@ -0,0 +1,137 @@
+; GIMP - The GNU Image Manipulation Program
+; Copyright (C) 1995 Spencer Kimball and Peter Mattis
+;
+; Predator effect
+; Copyright (c) 1997 Adrian Likins
+; aklikins@eos.ncsu.ed
+;
+;  The idea here is too make the image/selection look sort of like
+;  the view the predator had in the movies. ie, kind of a thermogram
+;  type of thing. Works best on colorful rgb images.
+;
+; This program is free software: you can redistribute it and/or modify
+; it under the terms of the GNU General Public License as published by
+; the Free Software Foundation; either version 3 of the License, or
+; (at your option) any later version.
+;
+; This program is distributed in the hope that it will be useful,
+; but WITHOUT ANY WARRANTY; without even the implied warranty of
+; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+; GNU General Public License for more details.
+;
+; You should have received a copy of the GNU General Public License
+; along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+
+(define (script-fu-predator image
+                            drawable
+                            edge-amount
+                            pixelize
+                            pixel-size
+                            keep-selection
+                            separate-layer)
+  (let* (
+        (type (car (gimp-drawable-type-with-alpha drawable)))
+        (image-width (car (gimp-image-width image)))
+        (image-height (car (gimp-image-height image)))
+        (active-selection 0)
+        (from-selection 0)
+        (selection-bounds 0)
+        (select-offset-x 0)
+        (select-offset-y 0)
+        (select-width 0)
+        (select-height 0)
+        (effect-layer 0)
+        (active-layer 0)
+        )
+
+    (gimp-context-push)
+    (gimp-context-set-defaults)
+    (gimp-image-undo-group-start image)
+    (gimp-layer-add-alpha drawable)
+
+    (if (= (car (gimp-selection-is-empty image)) TRUE)
+        (begin
+          (gimp-image-select-item image CHANNEL-OP-REPLACE drawable)
+          (set! active-selection (car (gimp-selection-save image)))
+          (set! from-selection FALSE)
+        )
+        (begin
+          (set! from-selection TRUE)
+          (set! active-selection (car (gimp-selection-save image)))
+        )
+    )
+
+    (set! selection-bounds (gimp-selection-bounds image))
+    (set! select-offset-x (cadr selection-bounds))
+    (set! select-offset-y (caddr selection-bounds))
+    (set! select-width (- (cadr (cddr selection-bounds)) select-offset-x))
+    (set! select-height (- (caddr (cddr selection-bounds)) select-offset-y))
+
+    (if (= separate-layer TRUE)
+        (begin
+          (set! effect-layer (car (gimp-layer-new image
+                                                  select-width
+                                                  select-height
+                                                  type
+                                                  "glow layer"
+                                                  100
+                                                  LAYER-MODE-NORMAL))
+          )
+
+          (gimp-layer-set-offsets effect-layer select-offset-x select-offset-y)
+          (gimp-image-insert-layer image effect-layer 0 -1)
+          (gimp-selection-none image)
+          (gimp-drawable-edit-clear effect-layer)
+
+          (gimp-image-select-item image CHANNEL-OP-REPLACE active-selection)
+          (gimp-edit-copy drawable)
+          (let ((floating-sel (car (gimp-edit-paste effect-layer FALSE))))
+            (gimp-floating-sel-anchor floating-sel)
+          )
+          (gimp-image-set-active-layer image effect-layer)
+        )
+        (set! effect-layer drawable)
+    )
+    (set! active-layer effect-layer)
+
+    ; all the fun stuff goes here
+    (if (= pixelize TRUE)
+        (plug-in-pixelize RUN-NONINTERACTIVE image active-layer pixel-size)
+    )
+    (plug-in-max-rgb RUN-NONINTERACTIVE image active-layer 0)
+    (plug-in-edge RUN-NONINTERACTIVE image active-layer edge-amount 1 0)
+
+    ; clean up the selection copy
+    (gimp-image-select-item image CHANNEL-OP-REPLACE active-selection)
+
+    (if (= keep-selection FALSE)
+        (gimp-selection-none image)
+    )
+
+    (gimp-image-set-active-layer image drawable)
+    (gimp-image-remove-channel image active-selection)
+    (gimp-image-undo-group-end image)
+    (gimp-displays-flush)
+    (gimp-context-pop)
+  )
+)
+
+(script-fu-register "script-fu-predator"
+  _"_Predator..."
+  _"Add a 'Predator' effect to the selected region (or alpha)"
+  "Adrian Likins <adrian@gimp.org>"
+  "Adrian Likins"
+  "10/12/97"
+  "RGB*"
+  SF-IMAGE       "Image"          0
+  SF-DRAWABLE    "Drawable"       0
+  SF-ADJUSTMENT _"Edge amount"    '(2 0 24 1 1 0 0)
+  SF-TOGGLE     _"Pixelize"       TRUE
+  SF-ADJUSTMENT _"Pixel amount"   '(3 1 16 1 1 0 0)
+  SF-TOGGLE     _"Keep selection" TRUE
+  SF-TOGGLE     _"Separate layer" TRUE
+)
+
+(script-fu-menu-register "script-fu-predator"
+                         "<Image>/Filters/Artistic")
diff --git a/plug-ins/script-fu/scripts/reverse-layers.scm b/plug-ins/script-fu/scripts/reverse-layers.scm
new file mode 100644
index 0000000..d7e2882
--- /dev/null
+++ b/plug-ins/script-fu/scripts/reverse-layers.scm
@@ -0,0 +1,53 @@
+; reverse-layers.scm: Reverse the order of layers in the current image.
+; Copyright (C) 2006 by Akkana Peck.
+;
+; This program is free software: you can redistribute it and/or modify
+; it under the terms of the GNU General Public License as published by
+; the Free Software Foundation; either version 3 of the License, or
+; (at your option) any later version.
+;
+; This program is distributed in the hope that it will be useful,
+; but WITHOUT ANY WARRANTY; without even the implied warranty of
+; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+; GNU General Public License for more details.
+;
+; You should have received a copy of the GNU General Public License
+; along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+(define (script-fu-reverse-layers img drawable)
+  (let* (
+        (layers (gimp-image-get-layers img))
+        (num-layers (car layers))
+        (layer-array (cadr layers))
+        (i (- num-layers 1))
+        )
+
+    (gimp-image-undo-group-start img)
+
+    (while (>= i 0)
+           (let ((layer (aref layer-array i)))
+             (if (= (car (gimp-layer-is-floating-sel layer)) FALSE)
+                 (gimp-image-lower-item-to-bottom img layer))
+           )
+
+           (set! i (- i 1))
+    )
+
+    (gimp-image-undo-group-end img)
+    (gimp-displays-flush)
+  )
+)
+
+(script-fu-register "script-fu-reverse-layers"
+  _"Reverse Layer _Order"
+  _"Reverse the order of layers in the image"
+  "Akkana Peck"
+  "Akkana Peck"
+  "August 2006"
+  "*"
+  SF-IMAGE    "Image"    0
+  SF-DRAWABLE "Drawable" 0
+)
+
+(script-fu-menu-register "script-fu-reverse-layers"
+                         "<Image>/Layer/Stack")
diff --git a/plug-ins/script-fu/scripts/ripply-anim.scm b/plug-ins/script-fu/scripts/ripply-anim.scm
new file mode 100644
index 0000000..25a2462
--- /dev/null
+++ b/plug-ins/script-fu/scripts/ripply-anim.scm
@@ -0,0 +1,83 @@
+; "Rippling Image" animation generator (ripply-anim.scm)
+; Adam D. Moss (adam@foxbox.org)
+; 97/05/18
+; Revised by Saul Goode April 2015.
+;
+; Designed to be used in conjunction with a plugin capable
+; of saving animations (i.e. the GIF plugin).
+;
+
+(define (script-fu-ripply-anim image drawable displacement num-frames edge-type)
+  (let* ((width (car (gimp-drawable-width drawable)))
+         (height (car (gimp-drawable-height drawable)))
+         (work-image (car (gimp-image-new width
+                                          height
+                                          (quotient (car (gimp-drawable-type drawable))
+                                                    2))))
+         (map-layer (car (gimp-layer-new work-image
+                                         width
+                                         height
+                                         (car (gimp-drawable-type drawable))
+                                         "Ripple Map"
+                                         100
+                                         LAYER-MODE-NORMAL))))
+    (gimp-context-push)
+    (gimp-context-set-paint-mode LAYER-MODE-NORMAL)
+    (gimp-context-set-opacity 100.0)
+    (gimp-image-undo-disable work-image)
+
+    ; Create a tile-able displacement map in the first layer
+    (gimp-context-set-background '(127 127 127))
+    (gimp-image-insert-layer work-image map-layer 0 0)
+    (gimp-drawable-edit-fill map-layer FILL-BACKGROUND)
+    (plug-in-noisify RUN-NONINTERACTIVE work-image map-layer FALSE 1.0 1.0 1.0 0.0)
+    (plug-in-tile RUN-NONINTERACTIVE work-image map-layer (* width 3) (* height 3) FALSE)
+    (plug-in-gauss-iir RUN-NONINTERACTIVE work-image map-layer 35 TRUE TRUE)
+    (gimp-drawable-equalize map-layer TRUE)
+    (plug-in-gauss-rle RUN-NONINTERACTIVE work-image map-layer 5 TRUE TRUE)
+    (gimp-drawable-equalize map-layer TRUE)
+    (gimp-image-crop work-image width height width height)
+
+    ; Create the frame layers
+    (let loop ((remaining-frames num-frames))
+      (unless (zero? remaining-frames)
+        (let ((frame-layer (car (gimp-layer-new-from-drawable drawable work-image))))
+          (gimp-image-insert-layer work-image frame-layer 0 0)
+          (gimp-item-set-name frame-layer
+                              (string-append "Frame "
+                                             (number->string (+ 1 (- num-frames
+                                                                     remaining-frames)))
+                                             " (replace)"))
+          (plug-in-displace RUN-NONINTERACTIVE work-image frame-layer
+                            displacement displacement
+                            TRUE TRUE map-layer map-layer (+ edge-type 1))
+          (gimp-item-set-visible frame-layer TRUE))
+        (gimp-drawable-offset map-layer
+                              TRUE
+                              OFFSET-BACKGROUND
+                              (/ width num-frames)
+                              (/ height num-frames))
+        (loop (- remaining-frames 1))))
+
+    (gimp-image-remove-layer work-image map-layer)
+    (gimp-image-undo-enable work-image)
+    (gimp-display-new work-image)
+
+    (gimp-context-pop)))
+
+(script-fu-register "script-fu-ripply-anim"
+  _"_Rippling..."
+  _"Create a multi-layer image by adding a ripple effect to the current layer"
+  "Adam D. Moss (adam@foxbox.org), Saul Goode"
+  "Adam D. Moss, Saul Goode"
+  "1997, 2015"
+  "RGB* GRAY*"
+  SF-IMAGE      "Image to animage"    0
+  SF-DRAWABLE   "Drawable to animate" 0
+  SF-ADJUSTMENT _"Rippling strength"  '(3 0 256 1 10 1 0)
+  SF-ADJUSTMENT _"Number of frames"   '(15 0 256 1 10 0 1)
+  SF-OPTION     _"Edge behavior"      '(_"Wrap" _"Smear" _"Black")
+  )
+
+(script-fu-menu-register "script-fu-ripply-anim"
+                         "<Image>/Filters/Animation/Animators")
diff --git a/plug-ins/script-fu/scripts/round-corners.scm b/plug-ins/script-fu/scripts/round-corners.scm
new file mode 100644
index 0000000..53711d5
--- /dev/null
+++ b/plug-ins/script-fu/scripts/round-corners.scm
@@ -0,0 +1,149 @@
+; GIMP - The GNU Image Manipulation Program
+; Copyright (C) 1995 Spencer Kimball and Peter Mattis
+;
+; This program is free software: you can redistribute it and/or modify
+; it under the terms of the GNU General Public License as published by
+; the Free Software Foundation; either version 3 of the License, or
+; (at your option) any later version.
+;
+; This program is distributed in the hope that it will be useful,
+; but WITHOUT ANY WARRANTY; without even the implied warranty of
+; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+; GNU General Public License for more details.
+;
+; You should have received a copy of the GNU General Public License
+; along with this program.  If not, see <https://www.gnu.org/licenses/>.
+;
+;
+; round-corners.scm   version 1.02   1999/12/21
+;
+; CHANGE-LOG:
+; 1.00 - initial release
+; 1.01 - some code cleanup, no real changes
+;
+; Copyright (C) 1997-1999 Sven Neumann <sven@gimp.org>
+;
+;
+; Rounds the corners of an image, optionally adding a drop-shadow and
+; a background layer
+;
+; The script works on RGB and grayscale images that contain only
+; one layer. It creates a copy of the image or can optionally work
+; on the original. The script uses the current background color to
+; create a background layer. It makes a call to the script drop-shadow.
+;
+; This script is derived from my script add-shadow, which has become
+; obsolete now.
+
+
+
+(define (script-fu-round-corners img
+                                 drawable
+                                 radius
+                                 shadow-toggle
+                                 shadow-x
+                                 shadow-y
+                                 shadow-blur
+                                 background-toggle
+                                 work-on-copy)
+  (let* ((shadow-blur (abs shadow-blur))
+         (radius (abs radius))
+         (diam (* 2 radius))
+         (width (car (gimp-image-width img)))
+         (height (car (gimp-image-height img)))
+         (image (cond ((= work-on-copy TRUE)
+                       (car (gimp-image-duplicate img)))
+                      ((= work-on-copy FALSE)
+                       img)))
+         ; active drawable is not necessarily the active layer
+         (pic-layer (car (gimp-image-get-active-layer image)))
+         (type (car (gimp-drawable-type-with-alpha pic-layer)))
+        )
+
+  (gimp-context-push)
+  (gimp-context-set-defaults)
+
+  (if (= work-on-copy TRUE)
+      (gimp-image-undo-disable image)
+      (gimp-image-undo-group-start image)
+  )
+
+  ; add an alpha channel to the image
+  (gimp-layer-add-alpha pic-layer)
+
+  ; round the edges
+  (gimp-selection-none image)
+  (gimp-image-select-rectangle image CHANNEL-OP-ADD 0 0 radius radius)
+  (gimp-image-select-ellipse image CHANNEL-OP-SUBTRACT  0 0 diam diam)
+  (gimp-image-select-rectangle image CHANNEL-OP-ADD (- width radius) 0 radius radius)
+  (gimp-image-select-ellipse image CHANNEL-OP-SUBTRACT (- width diam) 0 diam diam)
+  (gimp-image-select-rectangle image CHANNEL-OP-ADD 0 (- height radius) radius radius)
+  (gimp-image-select-ellipse image CHANNEL-OP-SUBTRACT 0 (- height diam) diam diam)
+  (gimp-image-select-rectangle image CHANNEL-OP-ADD (- width radius) (- height radius)
+                    radius radius)
+  (gimp-image-select-ellipse image CHANNEL-OP-SUBTRACT (- width diam) (- height diam)
+                       diam diam)
+  (gimp-drawable-edit-clear pic-layer)
+  (gimp-selection-none image)
+
+  ; optionally add a shadow
+  (if (= shadow-toggle TRUE)
+      (begin
+        (script-fu-drop-shadow image
+                               pic-layer
+                               shadow-x
+                               shadow-y
+                               shadow-blur
+                               '(0 0 0)
+                               80
+                               TRUE)
+        (set! width (car (gimp-image-width image)))
+        (set! height (car (gimp-image-height image)))))
+
+  ; optionally add a background
+  (if (= background-toggle TRUE)
+      (let* ((bg-layer (car (gimp-layer-new image
+                                            width
+                                            height
+                                            type
+                                            "Background"
+                                            100
+                                            LAYER-MODE-NORMAL))))
+        (gimp-drawable-fill bg-layer FILL-BACKGROUND)
+        (gimp-image-insert-layer image bg-layer 0 -1)
+        (gimp-image-raise-item image pic-layer)
+        (if (= shadow-toggle TRUE)
+            (gimp-image-lower-item image bg-layer))))
+
+; clean up after the script
+  (if (= work-on-copy TRUE)
+      (gimp-image-undo-enable image)
+      (gimp-image-undo-group-end image)
+  )
+
+  (if (= work-on-copy TRUE)
+      (gimp-display-new image))
+  (gimp-context-pop)
+  (gimp-displays-flush))
+)
+
+(script-fu-register "script-fu-round-corners"
+  _"_Round Corners..."
+  _"Round the corners of an image and optionally add a drop-shadow and background"
+  "Sven Neumann <sven@gimp.org>"
+  "Sven Neumann"
+  "1999/12/21"
+  "RGB* GRAY*"
+  SF-IMAGE      "Image"            0
+  SF-DRAWABLE   "Drawable"         0
+  SF-ADJUSTMENT _"Edge radius"     '(15 0 4096 1 10 0 1)
+  SF-TOGGLE     _"Add drop-shadow" TRUE
+  SF-ADJUSTMENT _"Shadow X offset" '(8 -4096 4096 1 10 0 1)
+  SF-ADJUSTMENT _"Shadow Y offset" '(8 -4096 4096 1 10 0 1)
+  SF-ADJUSTMENT _"Blur radius"     '(15 0 1024 1 10 0 1)
+  SF-TOGGLE     _"Add background"  TRUE
+  SF-TOGGLE     _"Work on copy"    TRUE
+)
+
+(script-fu-menu-register "script-fu-round-corners"
+                         "<Image>/Filters/Decor")
diff --git a/plug-ins/script-fu/scripts/script-fu-compat.init b/plug-ins/script-fu/scripts/script-fu-compat.init
new file mode 100644
index 0000000..865cf80
--- /dev/null
+++ b/plug-ins/script-fu/scripts/script-fu-compat.init
@@ -0,0 +1,457 @@
+;The Scheme code in this file provides some compatibility with scripts that
+;were originally written for use with the older SIOD based Script-Fu plug-in
+;of GIMP.
+;
+;All items defined in this file except for the random number routines are
+;deprecated. Existing scripts should be updated to avoid the use of the
+;compatibility functions and define statements which follow the random number 
+;generator routines.
+;
+;The items marked as deprecated at the end of this file may be removed
+;at some later date.
+
+
+;The random number generator routines below have been slightly reformatted.
+;A couple of define blocks which are not needed have been commented out.
+;It has also been extended to enable it to generate numbers with exactly 31
+;bits or more.
+;The original file was called rand2.scm and can be found in:
+;http://www-2.cs.cmu.edu/afs/cs/project/ai-repository/ai/lang/scheme/code/math/random/
+
+; Minimal Standard Random Number Generator
+; Park & Miller, CACM 31(10), Oct 1988, 32 bit integer version.
+; better constants, as proposed by Park.
+; By Ozan Yigit
+
+;(define *seed* 1)
+
+(define (srand seed)
+  (set! *seed* seed)
+  *seed*
+)
+
+(define (msrg-rand)
+  (let (
+       (A 48271)
+       (M 2147483647)
+       (Q 44488)
+       (R 3399)
+       )
+    (let* (
+          (hi (quotient *seed* Q))
+          (lo (modulo *seed* Q))
+          (test (- (* A lo) (* R hi)))
+          )
+      (if (> test 0)
+        (set! *seed* test)
+        (set! *seed* (+ test M))
+      )
+    )
+  )
+  *seed*
+)
+
+; poker test
+; seed 1
+; cards 0-9 inclusive (random 10)
+; five cards per hand
+; 10000 hands
+;
+; Poker Hand     Example    Probability  Calculated
+; 5 of a kind    (aaaaa)      0.0001      0
+; 4 of a kind    (aaaab)      0.0045      0.0053
+; Full house     (aaabb)      0.009       0.0093
+; 3 of a kind    (aaabc)      0.072       0.0682
+; two pairs      (aabbc)      0.108       0.1104
+; Pair           (aabcd)      0.504       0.501
+; Bust           (abcde)      0.3024      0.3058
+
+(define (random n)
+  (define (internal-random n)
+    (let* (
+          (n (inexact->exact (truncate n)))
+          (M 2147483647)
+          (slop (modulo M (abs n)))
+          )
+      (let loop ((r (msrg-rand)))
+        (if (>= r slop)
+          (modulo r n)
+          (loop (msrg-rand))
+        )
+      )
+    )
+  )
+
+  ; Negative numbers have a bigger range in twos complement platforms
+  ; (nearly all platforms out there) than positive ones, so we deal with
+  ; the numbers in negative form.
+  (if (> n 0)
+    (+ n (random (- n)))
+
+    (if (>= n -2147483647)
+      (internal-random n)
+
+      ; 31-or-more-bits number requested - needs multiple extractions
+      ; because we don't generate enough random bits.
+      (if (>= n -1152921504606846975)
+        ; Up to 2^60-1, two extractions are enough
+        (let ((q (- (quotient (+ n 1) 1073741824) 1))) ; q=floor(n/2^30)
+          (let loop ()
+            (let ((big (+ (* (internal-random q) 1073741824)
+                          (internal-random -1073741824)
+                       )
+                 ))
+              (if (> big n)
+                big
+                (loop)
+              )
+            )
+          )
+        )
+
+        ; From 2^60 up, we do three extractions.
+        ; The code is better understood if seen as generating three
+        ; digits in base 2^30. q is the maximum value the first digit
+        ; can take. The other digits can take the full range.
+        ;
+        ; The strategy is to generate a random number digit by digit.
+        ; Here's an example in base 10. Say the input n is 348
+        ; (thus requesting a number between 0 and 347). Then the algorithm
+        ; first calls (internal-random 4) to get a digit between 0 and 3,
+        ; then (internal-random 10) twice to get two more digits between
+        ; 0 and 9. Say the result is 366: since it is greater than 347,
+        ; it's discarded and the process restarted. When the result is
+        ; <= 347, that's the returned value. The probability of it being
+        ; greater than the max is always strictly less than 1/2.
+        ;
+        ; This is the same idea but in base 2^30 (1073741824). The
+        ; first digit's weight is (2^30)^2 = 1152921504606846976,
+        ; similarly to how in our base 10 example, the first digit's
+        ; weight is 10^2 = 100. In the base 10 example we first divide
+        ; the target number 348 by 100, taking the ceiling, to get 4.
+        ; Here we divide by (2^30)^2 instead, taking the ceiling too.
+        ;
+        ; The math is a bit obscured by the fact that we generate
+        ; the digits as negative, so that the result is negative as
+        ; well, but it's really the same thing. Changing the sign of
+        ; every digit just changes the sign of the result.
+        ;
+        ; This method works for n up to (2^30)^2*(2^31-1) which is
+        ; 2475880077417839045191401472 (slightly under 91 bits). That
+        ; covers the 64-bit range comfortably, and some more. If larger
+        ; numbers are needed, they'll have to be composed with a
+        ; user-defined procedure.
+
+        (if (>= n -2475880077417839045191401472)
+          (let ((q (- (quotient (+ n 1) 1152921504606846976) 1))) ; q=floor(n/2^60)
+            (let loop ()
+              (let ((big (+ (* (internal-random q) 1152921504606846976)
+                            (* (internal-random -1073741824) 1073741824)
+                            (internal-random -1073741824)
+                         )
+                   ))
+                (if (> big n)
+                  big
+                  (loop)
+                )
+              )
+            )
+          )
+          (error "requested (random n) range too large")
+        )
+      )
+    )
+  )
+)
+
+;(define (rngtest)
+;  (display "implementation ")
+;  (srand 1)
+;  (do
+;    ( (n 0 (+ n 1)) )
+;    ( (>= n 10000) )
+;    (msrg-rand)
+;  )
+;  (if (= *seed* 399268537)
+;      (display "looks correct.")
+;      (begin
+;        (display "failed.")
+;        (newline)
+;        (display "   current seed ") (display *seed*)
+;        (newline)
+;        (display "   correct seed 399268537")
+;      )
+;  )
+;  (newline)
+;)
+
+
+;This macro defines a while loop which is needed by some older scripts.
+;This is here since it is not defined in R5RS and could be handy to have.
+
+;This while macro was found at:
+;http://www.aracnet.com/~briand/scheme_eval.html
+(define-macro (while test . body)
+  `(let loop ()
+     (cond
+       (,test
+         ,@body
+         (loop)
+       )
+     )
+   )
+)
+
+
+;The following define block(s) require the tsx extension to be loaded
+
+(define (realtime)
+  (car (gettimeofday))
+)
+
+
+;Items below this line are for compatibility with Script-Fu but
+;may be useful enough to keep around
+
+(define (delq item lis)
+  (let ((l '()))
+    (unless (null? lis)
+      (while (pair? lis)
+        (if (<> item (car lis))
+          (set! l (append l (list (car lis))))
+        )
+        (set! lis (cdr lis))
+      )
+    )
+
+    l
+  )
+)
+
+(define (make-list count fill)
+  (vector->list (make-vector count fill))
+)
+
+(define (strbreakup str sep)
+  (let* (
+        (seplen (string-length sep))
+        (start 0)
+        (end (string-length str))
+        (i start)
+        (l '())
+        )
+
+    (if (= seplen 0)
+      (set! l (list str))
+      (begin
+        (while (<= i (- end seplen))
+          (if (substring-equal? sep str i (+ i seplen))
+            (begin
+               (if (= start 0)
+                 (set! l (list (substring str start i)))
+                 (set! l (append l (list (substring str start i))))
+               )
+               (set! start (+ i seplen))
+               (set! i (+ i seplen -1))
+            )
+          )
+
+          (set! i (+ i 1))
+        )
+
+        (set! l (append l (list (substring str start end))))
+      )
+    )
+
+    l
+  )
+)
+
+(define (string-downcase str)
+  (list->string (map char-downcase (string->list str)))
+)
+
+(define (string-trim str)
+  (string-trim-right (string-trim-left str))
+)
+
+(define (string-trim-left str)
+  (let (
+       (strlen (string-length str))
+       (i 0)
+       )
+
+    (while (and (< i strlen)
+                (char-whitespace? (string-ref str i))
+           )
+      (set! i (+ i 1))
+    )
+
+    (substring str i (string-length str))
+  )
+)
+
+(define (string-trim-right str)
+  (let ((i (- (string-length str) 1)))
+
+    (while (and (>= i 0)
+                (char-whitespace? (string-ref str i))
+           )
+      (set! i (- i 1))
+    )
+
+    (substring str 0 (+ i 1))
+  )
+)
+
+(define (string-upcase str)
+  (list->string (map char-upcase (string->list str)))
+)
+
+(define (substring-equal? str str2 start end)
+  (string=? str (substring str2 start end))
+)
+
+(define (unbreakupstr stringlist sep)
+  (let ((str (car stringlist)))
+
+    (set! stringlist (cdr stringlist))
+    (while (not (null? stringlist))
+      (set! str (string-append str sep (car stringlist)))
+      (set! stringlist (cdr stringlist))
+    )
+
+    str
+  )
+)
+
+
+;Items below this line are deprecated and should not be used in new scripts.
+
+(define aset vector-set!)
+(define aref vector-ref)
+(define fopen open-input-file)
+(define mapcar map)
+(define nil '())
+(define nreverse reverse)
+(define pow expt)
+(define prin1 write)
+
+(define (print obj . port)
+  (apply write obj port)
+  (newline)
+)
+
+(define strcat string-append)
+(define string-lessp string<?)
+(define symbol-bound? defined?)
+(define the-environment current-environment)
+
+(define *pi*
+  (* 4 (atan 1.0))
+)
+
+(define (butlast x)
+  (if (= (length x) 1)
+    '()
+    (reverse (cdr (reverse x)))
+  )
+)
+
+(define (cons-array count type)
+  (case type
+    ((long)   (make-vector count 0))
+    ((short)  (make-vector count 0))
+    ((byte)   (make-vector count 0))
+    ((double) (make-vector count 0.0))
+    ((string) (vector->list (make-vector count "")))
+    (else type)
+  )
+)
+
+(define (fmod a b)
+  (- a (* (truncate (/ a b)) b))
+)
+
+(define (fread arg1 file)
+
+  (define (fread-get-chars count file)
+    (let (
+         (str "")
+         (c 0)
+         )
+
+      (while (> count 0)
+        (set! count (- count 1))
+        (set! c (read-char file))
+        (if (eof-object? c)
+            (set! count 0)
+            (set! str (string-append str (make-string 1 c)))
+        )
+      )
+
+      (if (eof-object? c)
+          ()
+          str
+      )
+    )
+  )
+
+  (if (number? arg1)
+      (begin
+        (set! arg1 (inexact->exact (truncate arg1)))
+        (fread-get-chars arg1 file)
+      )
+      (begin
+        (set! arg1 (fread-get-chars (string-length arg1) file))
+        (string-length arg1)
+      )
+  )
+)
+
+(define (last x)
+  (cons (car (reverse x)) '())
+)
+
+(define (nth k list)
+  (list-ref list k)
+)
+
+(define (prog1 form1 . form2)
+  (let ((a form1))
+    (if (not (null? form2))
+      form2
+    )
+    a
+  )
+)
+
+(define (rand . modulus)
+  (if (null? modulus)
+    (msrg-rand)
+    (apply random modulus)
+  )
+)
+
+(define (strcmp str1 str2)
+  (if (string<? str1 str2)
+      -1
+      (if (string>? str1 str2)
+          1
+          0
+      )
+  )
+)
+
+(define (trunc n)
+  (inexact->exact (truncate n))
+)
+
+(define verbose
+  (lambda n
+    (if (or (null? n) (not (number? (car n))))
+      0
+      (car n)
+    )
+  )
+)
diff --git a/plug-ins/script-fu/scripts/script-fu-set-cmap.scm b/plug-ins/script-fu/scripts/script-fu-set-cmap.scm
new file mode 100644
index 0000000..259d5de
--- /dev/null
+++ b/plug-ins/script-fu/scripts/script-fu-set-cmap.scm
@@ -0,0 +1,64 @@
+; Set Colormap v1.1  September 29, 2004
+; by Kevin Cozens <kcozens@interlog.com>
+;
+; Change the colormap of an image to the colors in a specified palette.
+; Included is script-fu-make-cmap-array (available for use in scripts) which
+; returns an INT8ARRAY containing the colors from a specified palette.
+; This array can be used as the cmap argument for gimp-image-set-colormap.
+
+; GIMP - The GNU Image Manipulation Program
+; Copyright (C) 1995 Spencer Kimball and Peter Mattis
+;
+; This program is free software: you can redistribute it and/or modify
+; it under the terms of the GNU General Public License as published by
+; the Free Software Foundation; either version 3 of the License, or
+; (at your option) any later version.
+;
+; This program is distributed in the hope that it will be useful,
+; but WITHOUT ANY WARRANTY; without even the implied warranty of
+; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+; GNU General Public License for more details.
+;
+; You should have received a copy of the GNU General Public License
+; along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+(define (script-fu-make-cmap-array palette)
+  (let* (
+        (num-colors (car (gimp-palette-get-info palette)))
+        (cmap (cons-array (* num-colors 3) 'byte))
+        (color 0)
+        (i 0)
+        )
+
+    (while (< i num-colors)
+      (set! color (car (gimp-palette-entry-get-color palette i)))
+      (aset cmap (* i 3) (car color))
+      (aset cmap (+ (* i 3) 1) (cadr color))
+      (aset cmap (+ (* i 3) 2) (caddr color))
+      (set! i (+ i 1))
+    )
+
+    cmap
+  )
+)
+
+(define (script-fu-set-cmap img drawable palette)
+  (gimp-image-set-colormap img
+                           (* (car (gimp-palette-get-info palette)) 3)
+                           (script-fu-make-cmap-array palette))
+  (gimp-displays-flush)
+)
+
+(script-fu-register "script-fu-set-cmap"
+    _"Se_t Colormap..."
+    _"Change the colormap of an image to the colors in a specified palette."
+    "Kevin Cozens <kcozens@interlog.com>"
+    "Kevin Cozens"
+    "September 29, 2004"
+    "INDEXED*"
+    SF-IMAGE     "Image"    0
+    SF-DRAWABLE  "Drawable" 0
+    SF-PALETTE  _"Palette"  "Default"
+)
+
+(script-fu-menu-register "script-fu-set-cmap" "<Image>/Colors/Map/Colormap")
diff --git a/plug-ins/script-fu/scripts/script-fu-util.scm b/plug-ins/script-fu/scripts/script-fu-util.scm
new file mode 100644
index 0000000..a22114d
--- /dev/null
+++ b/plug-ins/script-fu/scripts/script-fu-util.scm
@@ -0,0 +1,94 @@
+; GIMP - The GNU Image Manipulation Program
+; Copyright (C) 1995 Spencer Kimball and Peter Mattis
+;
+; This program is free software: you can redistribute it and/or modify
+; it under the terms of the GNU General Public License as published by
+; the Free Software Foundation; either version 3 of the License, or
+; (at your option) any later version.
+;
+; This program is distributed in the hope that it will be useful,
+; but WITHOUT ANY WARRANTY; without even the implied warranty of
+; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+; GNU General Public License for more details.
+;
+; You should have received a copy of the GNU General Public License
+; along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+; Resizes the image so as to include the selected layer.
+; The resulting image has the selected layer size.
+; Copyright (C) 2002 Chauk-Mean PROUM
+;
+(define (script-fu-util-image-resize-from-layer image layer)
+  (let* (
+        (width (car (gimp-drawable-width layer)))
+        (height (car (gimp-drawable-height layer)))
+        (posx (- (car (gimp-drawable-offsets layer))))
+        (posy (- (cadr (gimp-drawable-offsets layer))))
+        )
+
+    (gimp-image-resize image width height posx posy)
+  )
+)
+
+; Add the specified layers to the image.
+; The layers will be added in the given order below the
+; active layer.
+;
+(define (script-fu-util-image-add-layers image . layers)
+  (while (not (null? layers))
+    (let ((layer (car layers)))
+      (set! layers (cdr layers))
+      (gimp-image-insert-layer image layer 0 -1)
+      (gimp-image-lower-item image layer)
+    )
+  )
+)
+
+; Allow command line usage of GIMP such as:
+;
+;     gimp -i -b '(with-files "*.png" <body>)'
+;
+; where <body> is the code that handles whatever processing you want to
+; perform on the files. There are four variables that are available
+; within the <body>: 'basename', 'image', 'filename' and 'layer'.
+; The 'basename' is the name of the file with its extension removed,
+; while the other three variables are self-explanatory.
+; You basically write your code as though it were processing a single
+; 'image' and the 'with-files' macro applies it to all of the files
+; matching the pattern.
+;
+; For example, to invert the colors of all of the PNG files in the
+; start directory:
+;
+;    gimp -i -b '(with-files "*.png" (gimp-drawable-invert layer FALSE) \
+;                 (gimp-file-save 1 image layer filename filename ))'
+;
+; To do the same thing, but saving them as jpeg instead:
+;
+;    gimp -i -b '(with-files "*.png" (gimp-drawable-invert layer FALSE) \
+;                 (gimp-file-save 1 image layer \
+;                  (string-append basename ".jpg") \
+;                  (string-append basename ".jpg") ))'
+
+(define-macro (with-files pattern . body)
+  (let ((loop (gensym))
+        (filenames (gensym))
+        (filename (gensym)))
+    `(begin
+       (let ,loop ((,filenames (cadr (file-glob ,pattern 1))))
+         (unless (null? ,filenames)
+           (let* ((filename (car ,filenames))
+                  (image (catch #f (car (gimp-file-load RUN-NONINTERACTIVE
+                                                        filename
+                                                        filename ))))
+                  (layer (if image (car (gimp-image-get-active-layer image)) #f))
+                  (basename (unbreakupstr (butlast (strbreakup filename ".")) ".")))
+             (when image
+               ,@body
+               (gimp-image-delete image)))
+           (,loop (cdr ,filenames))
+         )
+       )
+     )
+  )
+)
diff --git a/plug-ins/script-fu/scripts/script-fu.init b/plug-ins/script-fu/scripts/script-fu.init
new file mode 100644
index 0000000..d0c9e30
--- /dev/null
+++ b/plug-ins/script-fu/scripts/script-fu.init
@@ -0,0 +1,716 @@
+;    Initialization file for TinySCHEME 1.40
+
+; Per R5RS, up to four deep compositions should be defined
+(define (caar x) (car (car x)))
+(define (cadr x) (car (cdr x)))
+(define (cdar x) (cdr (car x)))
+(define (cddr x) (cdr (cdr x)))
+(define (caaar x) (car (car (car x))))
+(define (caadr x) (car (car (cdr x))))
+(define (cadar x) (car (cdr (car x))))
+(define (caddr x) (car (cdr (cdr x))))
+(define (cdaar x) (cdr (car (car x))))
+(define (cdadr x) (cdr (car (cdr x))))
+(define (cddar x) (cdr (cdr (car x))))
+(define (cdddr x) (cdr (cdr (cdr x))))
+(define (caaaar x) (car (car (car (car x)))))
+(define (caaadr x) (car (car (car (cdr x)))))
+(define (caadar x) (car (car (cdr (car x)))))
+(define (caaddr x) (car (car (cdr (cdr x)))))
+(define (cadaar x) (car (cdr (car (car x)))))
+(define (cadadr x) (car (cdr (car (cdr x)))))
+(define (caddar x) (car (cdr (cdr (car x)))))
+(define (cadddr x) (car (cdr (cdr (cdr x)))))
+(define (cdaaar x) (cdr (car (car (car x)))))
+(define (cdaadr x) (cdr (car (car (cdr x)))))
+(define (cdadar x) (cdr (car (cdr (car x)))))
+(define (cdaddr x) (cdr (car (cdr (cdr x)))))
+(define (cddaar x) (cdr (cdr (car (car x)))))
+(define (cddadr x) (cdr (cdr (car (cdr x)))))
+(define (cdddar x) (cdr (cdr (cdr (car x)))))
+(define (cddddr x) (cdr (cdr (cdr (cdr x)))))
+
+;;;; Utility to ease macro creation
+(define (macro-expand form)
+     ((eval (get-closure-code (eval (car form)))) form))
+
+(define (macro-expand-all form)
+   (if (macro? form)
+      (macro-expand-all (macro-expand form))
+      form))
+
+(define *compile-hook* macro-expand-all)
+
+
+(macro (unless form)
+     `(if (not ,(cadr form)) (begin ,@(cddr form))))
+
+(macro (when form)
+     `(if ,(cadr form) (begin ,@(cddr form))))
+
+; DEFINE-MACRO Contributed by Andy Gaynor
+(macro (define-macro dform)
+  (if (symbol? (cadr dform))
+    `(macro ,@(cdr dform))
+    (let ((form (gensym)))
+      `(macro (,(caadr dform) ,form)
+         (apply (lambda ,(cdadr dform) ,@(cddr dform)) (cdr ,form))))))
+
+; Utilities for math. Notice that inexact->exact is primitive,
+; but exact->inexact is not.
+(define exact? integer?)
+(define (inexact? x) (and (real? x) (not (integer? x))))
+(define (even? n) (= (remainder n 2) 0))
+(define (odd? n) (not (= (remainder n 2) 0)))
+(define (zero? n) (= n 0))
+(define (positive? n) (> n 0))
+(define (negative? n) (< n 0))
+(define complex? number?)
+(define rational? real?)
+(define (abs n) (if (>= n 0) n (- n)))
+(define (exact->inexact n) (* n 1.0))
+(define (<> n1 n2) (not (= n1 n2)))
+
+; min and max must return inexact if any arg is inexact; use (+ n 0.0)
+(define (max . lst)
+  (foldr (lambda (a b)
+           (if (> a b)
+             (if (exact? b) a (+ a 0.0))
+             (if (exact? a) b (+ b 0.0))))
+         (car lst) (cdr lst)))
+(define (min . lst)
+  (foldr (lambda (a b)
+           (if (< a b)
+             (if (exact? b) a (+ a 0.0))
+             (if (exact? a) b (+ b 0.0))))
+         (car lst) (cdr lst)))
+
+(define (succ x) (+ x 1))
+(define (pred x) (- x 1))
+(define gcd
+  (lambda a
+    (if (null? a)
+      0
+      (let ((aa (abs (car a)))
+            (bb (abs (cadr a))))
+         (if (= bb 0)
+              aa
+              (gcd bb (remainder aa bb)))))))
+(define lcm
+  (lambda a
+    (if (null? a)
+      1
+      (let ((aa (abs (car a)))
+            (bb (abs (cadr a))))
+         (if (or (= aa 0) (= bb 0))
+             0
+             (abs (* (quotient aa (gcd aa bb)) bb)))))))
+
+
+(define (string . charlist)
+     (list->string charlist))
+
+(define (list->string charlist)
+     (let* ((len (length charlist))
+            (newstr (make-string len))
+            (fill-string!
+               (lambda (str i len charlist)
+                    (if (= i len)
+                         str
+                         (begin (string-set! str i (car charlist))
+                         (fill-string! str (+ i 1) len (cdr charlist)))))))
+          (fill-string! newstr 0 len charlist)))
+
+(define (string-fill! s e)
+     (let ((n (string-length s)))
+          (let loop ((i 0))
+               (if (= i n)
+                    s
+                    (begin (string-set! s i e) (loop (succ i)))))))
+
+(define (string->list s)
+     (let loop ((n (pred (string-length s))) (l '()))
+          (if (= n -1)
+               l
+               (loop (pred n) (cons (string-ref s n) l)))))
+
+(define (string-copy str)
+     (string-append str))
+
+(define (string->anyatom str pred)
+     (let* ((a (string->atom str)))
+       (if (pred a) a
+         (error "string->xxx: not a xxx" a))))
+
+(define (string->number str . base)
+    (let ((n (string->atom str (if (null? base) 10 (car base)))))
+        (if (number? n) n #f)))
+
+(define (anyatom->string n pred)
+  (if (pred n)
+      (atom->string n)
+      (error "xxx->string: not a xxx" n)))
+
+
+(define (number->string n . base)
+    (atom->string n (if (null? base) 10 (car base))))
+
+(define (char-cmp? cmp a b)
+     (cmp (char->integer a) (char->integer b)))
+(define (char-ci-cmp? cmp a b)
+     (cmp (char->integer (char-downcase a)) (char->integer (char-downcase b))))
+
+(define (char=? a b) (char-cmp? = a b))
+(define (char<? a b) (char-cmp? < a b))
+(define (char>? a b) (char-cmp? > a b))
+(define (char<=? a b) (char-cmp? <= a b))
+(define (char>=? a b) (char-cmp? >= a b))
+
+(define (char-ci=? a b) (char-ci-cmp? = a b))
+(define (char-ci<? a b) (char-ci-cmp? < a b))
+(define (char-ci>? a b) (char-ci-cmp? > a b))
+(define (char-ci<=? a b) (char-ci-cmp? <= a b))
+(define (char-ci>=? a b) (char-ci-cmp? >= a b))
+
+; Note the trick of returning (cmp x y)
+(define (string-cmp? chcmp cmp a b)
+     (let ((na (string-length a)) (nb (string-length b)))
+          (let loop ((i 0))
+               (cond
+                    ((= i na)
+                         (if (= i nb) (cmp 0 0) (cmp 0 1)))
+                    ((= i nb)
+                         (cmp 1 0))
+                    ((chcmp = (string-ref a i) (string-ref b i))
+                         (loop (succ i)))
+                    (else
+                         (chcmp cmp (string-ref a i) (string-ref b i)))))))
+
+
+(define (string=? a b) (string-cmp? char-cmp? = a b))
+(define (string<? a b) (string-cmp? char-cmp? < a b))
+(define (string>? a b) (string-cmp? char-cmp? > a b))
+(define (string<=? a b) (string-cmp? char-cmp? <= a b))
+(define (string>=? a b) (string-cmp? char-cmp? >= a b))
+
+(define (string-ci=? a b) (string-cmp? char-ci-cmp? = a b))
+(define (string-ci<? a b) (string-cmp? char-ci-cmp? < a b))
+(define (string-ci>? a b) (string-cmp? char-ci-cmp? > a b))
+(define (string-ci<=? a b) (string-cmp? char-ci-cmp? <= a b))
+(define (string-ci>=? a b) (string-cmp? char-ci-cmp? >= a b))
+
+(define (list . x) x)
+
+(define (foldr f x lst)
+     (if (null? lst)
+          x
+          (foldr f (f x (car lst)) (cdr lst))))
+
+(define (unzip1-with-cdr . lists)
+  (unzip1-with-cdr-iterative lists '() '()))
+
+(define (unzip1-with-cdr-iterative lists cars cdrs)
+  (if (null? lists)
+      (cons cars cdrs)
+      (let ((car1 (caar lists))
+            (cdr1 (cdar lists)))
+        (unzip1-with-cdr-iterative
+          (cdr lists)
+          (append cars (list car1))
+          (append cdrs (list cdr1))))))
+
+(define (map proc . lists)
+  (if (null? lists)
+      (apply proc)
+      (if (null? (car lists))
+        '()
+        (let* ((unz (apply unzip1-with-cdr lists))
+               (cars (car unz))
+               (cdrs (cdr unz)))
+          (cons (apply proc cars) (apply map (cons proc cdrs)))))))
+
+(define (for-each proc . lists)
+  (if (null? lists)
+      (apply proc)
+      (if (null? (car lists))
+        #t
+        (let* ((unz (apply unzip1-with-cdr lists))
+               (cars (car unz))
+               (cdrs (cdr unz)))
+          (apply proc cars) (apply map (cons proc cdrs))))))
+
+(define (list-tail x k)
+    (if (zero? k)
+        x
+        (list-tail (cdr x) (- k 1))))
+
+(define (list-ref x k)
+    (car (list-tail x k)))
+
+(define (last-pair x)
+    (if (pair? (cdr x))
+        (last-pair (cdr x))
+        x))
+
+(define (head stream) (car stream))
+
+(define (tail stream) (force (cdr stream)))
+
+(define (vector-equal? x y)
+     (and (vector? x) (vector? y) (= (vector-length x) (vector-length y))
+          (let ((n (vector-length x)))
+               (let loop ((i 0))
+                    (if (= i n)
+                         #t
+                         (and (equal? (vector-ref x i) (vector-ref y i))
+                              (loop (succ i))))))))
+
+(define (list->vector x)
+     (apply vector x))
+
+(define (vector-fill! v e)
+     (let ((n (vector-length v)))
+          (let loop ((i 0))
+               (if (= i n)
+                    v
+                    (begin (vector-set! v i e) (loop (succ i)))))))
+
+(define (vector->list v)
+     (let loop ((n (pred (vector-length v))) (l '()))
+          (if (= n -1)
+               l
+               (loop (pred n) (cons (vector-ref v n) l)))))
+
+;; The following quasiquote macro is due to Eric S. Tiedemann.
+;;   Copyright 1988 by Eric S. Tiedemann; all rights reserved.
+;;
+;; Subsequently modified to handle vectors: D. Souflis
+
+(macro
+ quasiquote
+ (lambda (l)
+   (define (mcons f l r)
+     (if (and (pair? r)
+              (eq? (car r) 'quote)
+              (eq? (car (cdr r)) (cdr f))
+              (pair? l)
+              (eq? (car l) 'quote)
+              (eq? (car (cdr l)) (car f)))
+         (if (or (procedure? f) (number? f) (string? f))
+               f
+               (list 'quote f))
+         (if (eqv? l vector)
+               (apply l (eval r))
+               (list 'cons l r)
+               )))
+   (define (mappend f l r)
+     (if (or (null? (cdr f))
+             (and (pair? r)
+                  (eq? (car r) 'quote)
+                  (eq? (car (cdr r)) '())))
+         l
+         (list 'append l r)))
+   (define (foo level form)
+     (cond ((not (pair? form))
+               (if (or (procedure? form) (number? form) (string? form))
+                    form
+                    (list 'quote form))
+               )
+           ((eq? 'quasiquote (car form))
+            (mcons form ''quasiquote (foo (+ level 1) (cdr form))))
+           (#t (if (zero? level)
+                   (cond ((eq? (car form) 'unquote) (car (cdr form)))
+                         ((eq? (car form) 'unquote-splicing)
+                          (error "Unquote-splicing wasn't in a list:"
+                                 form))
+                         ((and (pair? (car form))
+                               (eq? (car (car form)) 'unquote-splicing))
+                          (mappend form (car (cdr (car form)))
+                                   (foo level (cdr form))))
+                         (#t (mcons form (foo level (car form))
+                                         (foo level (cdr form)))))
+                   (cond ((eq? (car form) 'unquote)
+                          (mcons form ''unquote (foo (- level 1)
+                                                     (cdr form))))
+                         ((eq? (car form) 'unquote-splicing)
+                          (mcons form ''unquote-splicing
+                                      (foo (- level 1) (cdr form))))
+                         (#t (mcons form (foo level (car form))
+                                         (foo level (cdr form)))))))))
+   (foo 0 (car (cdr l)))))
+
+;;;;;Helper for the dynamic-wind definition.  By Tom Breton (Tehom)
+(define (shared-tail x y)
+   (let ((len-x (length x))
+         (len-y (length y)))
+      (define (shared-tail-helper x y)
+         (if
+            (eq? x y)
+            x
+            (shared-tail-helper (cdr x) (cdr y))))
+
+      (cond
+         ((> len-x len-y)
+            (shared-tail-helper
+               (list-tail x (- len-x len-y))
+               y))
+         ((< len-x len-y)
+            (shared-tail-helper
+               x
+               (list-tail y (- len-y len-x))))
+         (#t (shared-tail-helper x y)))))
+
+;;;;;Dynamic-wind by Tom Breton (Tehom)
+
+;;Guarded because we must only eval this once, because doing so
+;;redefines call/cc in terms of old call/cc
+(unless (defined? 'dynamic-wind)
+   (let
+      ;;These functions are defined in the context of a private list of
+      ;;pairs of before/after procs.
+      (  (*active-windings* '())
+         ;;We'll define some functions into the larger environment, so
+         ;;we need to know it.
+         (outer-env (current-environment)))
+
+      ;;Poor-man's structure operations
+      (define before-func car)
+      (define after-func  cdr)
+      (define make-winding cons)
+
+      ;;Manage active windings
+      (define (activate-winding! new)
+         ((before-func new))
+         (set! *active-windings* (cons new *active-windings*)))
+      (define (deactivate-top-winding!)
+         (let ((old-top (car *active-windings*)))
+            ;;Remove it from the list first so it's not active during its
+            ;;own exit.
+            (set! *active-windings* (cdr *active-windings*))
+            ((after-func old-top))))
+
+      (define (set-active-windings! new-ws)
+         (unless (eq? new-ws *active-windings*)
+            (let ((shared (shared-tail new-ws *active-windings*)))
+
+               ;;Define the looping functions.
+               ;;Exit the old list.  Do deeper ones last.  Don't do
+               ;;any shared ones.
+               (define (pop-many)
+                  (unless (eq? *active-windings* shared)
+                     (deactivate-top-winding!)
+                     (pop-many)))
+               ;;Enter the new list.  Do deeper ones first so that the
+               ;;deeper windings will already be active.  Don't do any
+               ;;shared ones.
+               (define (push-many new-ws)
+                  (unless (eq? new-ws shared)
+                     (push-many (cdr new-ws))
+                     (activate-winding! (car new-ws))))
+
+               ;;Do it.
+               (pop-many)
+               (push-many new-ws))))
+
+      ;;The definitions themselves.
+      (eval
+         `(define call-with-current-continuation
+             ;;It internally uses the built-in call/cc, so capture it.
+             ,(let ((old-c/cc call-with-current-continuation))
+                 (lambda (func)
+                    ;;Use old call/cc to get the continuation.
+                    (old-c/cc
+                       (lambda (continuation)
+                          ;;Call func with not the continuation itself
+                          ;;but a procedure that adjusts the active
+                          ;;windings to what they were when we made
+                          ;;this, and only then calls the
+                          ;;continuation.
+                          (func
+                             (let ((current-ws *active-windings*))
+                                (lambda (x)
+                                   (set-active-windings! current-ws)
+                                   (continuation x)))))))))
+         outer-env)
+      ;;We can't just say "define (dynamic-wind before thunk after)"
+      ;;because the lambda it's defined to lives in this environment,
+      ;;not in the global environment.
+      (eval
+         `(define dynamic-wind
+             ,(lambda (before thunk after)
+                 ;;Make a new winding
+                 (activate-winding! (make-winding before after))
+                 (let ((result (thunk)))
+                    ;;Get rid of the new winding.
+                    (deactivate-top-winding!)
+                    ;;The return value is that of thunk.
+                    result)))
+         outer-env)))
+
+(define call/cc call-with-current-continuation)
+
+
+;;;;; atom? and equal? written by a.k
+
+;;;; atom?
+(define (atom? x)
+  (not (pair? x)))
+
+;;;;    equal?
+(define (equal? x y)
+     (cond
+          ((pair? x)
+               (and (pair? y)
+                    (equal? (car x) (car y))
+                    (equal? (cdr x) (cdr y))))
+          ((vector? x)
+               (and (vector? y) (vector-equal? x y)))
+          ((string? x)
+               (and (string? y) (string=? x y)))
+          (else (eqv? x y))))
+
+;;;; (do ((var init inc) ...) (endtest result ...) body ...)
+;;
+(macro do
+  (lambda (do-macro)
+    (apply (lambda (do vars endtest . body)
+             (let ((do-loop (gensym)))
+               `(letrec ((,do-loop
+                           (lambda ,(map (lambda (x)
+                                           (if (pair? x) (car x) x))
+                                      `,vars)
+                             (if ,(car endtest)
+                               (begin ,@(cdr endtest))
+                               (begin
+                                 ,@body
+                                 (,do-loop
+                                   ,@(map (lambda (x)
+                                            (cond
+                                              ((not (pair? x)) x)
+                                              ((< (length x) 3) (car x))
+                                              (else (car (cdr (cdr x))))))
+                                       `,vars)))))))
+                  (,do-loop
+                    ,@(map (lambda (x)
+                             (if (and (pair? x) (cdr x))
+                               (car (cdr x))
+                               '()))
+                        `,vars)))))
+      do-macro)))
+
+;;;; generic-member
+(define (generic-member cmp obj lst)
+  (cond
+    ((null? lst) #f)
+    ((cmp obj (car lst)) lst)
+    (else (generic-member cmp obj (cdr lst)))))
+
+(define (memq obj lst)
+     (generic-member eq? obj lst))
+(define (memv obj lst)
+     (generic-member eqv? obj lst))
+(define (member obj lst)
+     (generic-member equal? obj lst))
+
+;;;; generic-assoc
+(define (generic-assoc cmp obj alst)
+     (cond
+          ((null? alst) #f)
+          ((cmp obj (caar alst)) (car alst))
+          (else (generic-assoc cmp obj (cdr alst)))))
+
+(define (assq obj alst)
+     (generic-assoc eq? obj alst))
+(define (assv obj alst)
+     (generic-assoc eqv? obj alst))
+(define (assoc obj alst)
+     (generic-assoc equal? obj alst))
+
+(define (acons x y z) (cons (cons x y) z))
+
+;;;; Handy for imperative programs
+;;;; Used as: (define-with-return (foo x y) .... (return z) ...)
+(macro (define-with-return form)
+     `(define ,(cadr form)
+          (call/cc (lambda (return) ,@(cddr form)))))
+
+;;;; Simple exception handling
+;
+;    Exceptions are caught as follows:
+;
+;         (catch (do-something to-recover and-return meaningful-value)
+;              (if-something goes-wrong)
+;              (with-these calls))
+;
+;    "Catch" establishes a scope spanning multiple call-frames
+;    until another "catch" is encountered.
+;
+;    Exceptions are thrown with:
+;
+;         (throw "message")
+;
+;    If used outside a (catch ...), reverts to (error "message)
+
+(define *handlers* (list))
+
+(define (push-handler proc)
+     (set! *handlers* (cons proc *handlers*)))
+
+(define (pop-handler)
+     (let ((h (car *handlers*)))
+          (set! *handlers* (cdr *handlers*))
+          h))
+
+(define (more-handlers?)
+     (pair? *handlers*))
+
+(define (throw . x)
+     (if (more-handlers?)
+          (apply (pop-handler))
+          (apply error x)))
+
+(macro (catch form)
+     (let ((label (gensym)))
+          `(call/cc (lambda (exit)
+               (push-handler (lambda () (exit ,(cadr form))))
+               (let ((,label (begin ,@(cddr form))))
+                    (pop-handler)
+                    ,label)))))
+
+(define *error-hook* throw)
+
+
+;;;;; Definition of MAKE-ENVIRONMENT, to be used with two-argument EVAL
+
+(macro (make-environment form)
+     `(apply (lambda ()
+               ,@(cdr form)
+               (current-environment))))
+
+(define-macro (eval-polymorphic x . envl)
+  (display envl)
+  (let* ((env (if (null? envl) (current-environment) (eval (car envl))))
+         (xval (eval x env)))
+    (if (closure? xval)
+      (make-closure (get-closure-code xval) env)
+      xval)))
+
+; Redefine this if you install another package infrastructure
+; Also redefine 'package'
+(define *colon-hook* eval)
+
+;;;;; I/O
+
+(define (input-output-port? p)
+     (and (input-port? p) (output-port? p)))
+
+(define (close-port p)
+     (cond
+          ((input-output-port? p) (close-input-port p) (close-output-port p))
+          ((input-port? p) (close-input-port p))
+          ((output-port? p) (close-output-port p))
+          (else (throw "Not a port" p))))
+
+(define (call-with-input-file s p)
+     (let ((inport (open-input-file s)))
+          (if (eq? inport #f)
+               #f
+               (let ((res (p inport)))
+                    (close-input-port inport)
+                    res))))
+
+(define (call-with-output-file s p)
+     (let ((outport (open-output-file s)))
+          (if (eq? outport #f)
+               #f
+               (let ((res (p outport)))
+                    (close-output-port outport)
+                    res))))
+
+(define (with-input-from-file s p)
+     (let ((inport (open-input-file s)))
+          (if (eq? inport #f)
+               #f
+               (let ((prev-inport (current-input-port)))
+                    (set-input-port inport)
+                    (let ((res (p)))
+                         (close-input-port inport)
+                         (set-input-port prev-inport)
+                         res)))))
+
+(define (with-output-to-file s p)
+     (let ((outport (open-output-file s)))
+          (if (eq? outport #f)
+               #f
+               (let ((prev-outport (current-output-port)))
+                    (set-output-port outport)
+                    (let ((res (p)))
+                         (close-output-port outport)
+                         (set-output-port prev-outport)
+                         res)))))
+
+(define (with-input-output-from-to-files si so p)
+     (let ((inport (open-input-file si))
+           (outport (open-input-file so)))
+          (if (not (and inport outport))
+               (begin
+                    (close-input-port inport)
+                    (close-output-port outport)
+                    #f)
+               (let ((prev-inport (current-input-port))
+                     (prev-outport (current-output-port)))
+                    (set-input-port inport)
+                    (set-output-port outport)
+                    (let ((res (p)))
+                         (close-input-port inport)
+                         (close-output-port outport)
+                         (set-input-port prev-inport)
+                         (set-output-port prev-outport)
+                         res)))))
+
+; Random number generator (maximum cycle)
+(define *seed* 1)
+(define (random-next)
+     (let* ((a 16807) (m 2147483647) (q (quotient m a)) (r (modulo m a)))
+          (set! *seed*
+               (-   (* a (- *seed*
+                         (* (quotient *seed* q) q)))
+                    (* (quotient *seed* q) r)))
+          (if (< *seed* 0) (set! *seed* (+ *seed* m)))
+          *seed*))
+;; SRFI-0
+;; COND-EXPAND
+;; Implemented as a macro
+(define *features* '(srfi-0 tinyscheme))
+
+(define-macro (cond-expand . cond-action-list)
+  (cond-expand-runtime cond-action-list))
+
+(define (cond-expand-runtime cond-action-list)
+  (if (null? cond-action-list)
+      #t
+      (if (cond-eval (caar cond-action-list))
+          `(begin ,@(cdar cond-action-list))
+          (cond-expand-runtime (cdr cond-action-list)))))
+
+(define (cond-eval-and cond-list)
+  (foldr (lambda (x y) (and (cond-eval x) (cond-eval y))) #t cond-list))
+
+(define (cond-eval-or cond-list)
+  (foldr (lambda (x y) (or (cond-eval x) (cond-eval y))) #f cond-list))
+
+(define (cond-eval condition)
+  (cond
+    ((symbol? condition)
+       (if (member condition *features*) #t #f))
+    ((eq? condition #t) #t)
+    ((eq? condition #f) #f)
+    (else (case (car condition)
+            ((and) (cond-eval-and (cdr condition)))
+            ((or) (cond-eval-or (cdr condition)))
+            ((not) (if (not (null? (cddr condition)))
+                     (error "cond-expand : 'not' takes 1 argument")
+                     (not (cond-eval (cadr condition)))))
+            (else (error "cond-expand : unknown operator" (car condition)))))))
+
+(gc-verbose #f)
diff --git a/plug-ins/script-fu/scripts/select-to-brush.scm b/plug-ins/script-fu/scripts/select-to-brush.scm
new file mode 100644
index 0000000..c4ccf87
--- /dev/null
+++ b/plug-ins/script-fu/scripts/select-to-brush.scm
@@ -0,0 +1,144 @@
+; GIMP - The GNU Image Manipulation Program
+; Copyright (C) 1995 Spencer Kimball and Peter Mattis
+;
+; Selection-to-brush
+; Copyright (c) 1997 Adrian Likins
+; aklikins@eos.ncsu.edu
+;
+; Takes the current selection, saves it as a brush, and makes it the
+; active brush..
+;
+;       Parts of this script from Sven Neuman's Drop-Shadow and
+;       Seth Burgess's mkbrush scripts.
+;
+; This program is free software: you can redistribute it and/or modify
+; it under the terms of the GNU General Public License as published by
+; the Free Software Foundation; either version 3 of the License, or
+; (at your option) any later version.
+;
+; This program is distributed in the hope that it will be useful,
+; but WITHOUT ANY WARRANTY; without even the implied warranty of
+; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+; GNU General Public License for more details.
+;
+; You should have received a copy of the GNU General Public License
+; along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+
+(define (script-fu-selection-to-brush image
+                                      drawable
+                                      name
+                                      filename
+                                      spacing)
+  (let* (
+        (type (car (gimp-drawable-type-with-alpha drawable)))
+        (selection-bounds (gimp-selection-bounds image))
+        (select-offset-x  (cadr selection-bounds))
+        (select-offset-y  (caddr selection-bounds))
+        (selection-width  (- (cadr (cddr selection-bounds))  select-offset-x))
+        (selection-height (- (caddr (cddr selection-bounds)) select-offset-y))
+        (from-selection 0)
+        (active-selection 0)
+        (brush-draw-type 0)
+        (brush-image-type 0)
+        (brush-image 0)
+        (brush-draw 0)
+        (filename2 0)
+        )
+
+    (gimp-context-push)
+    (gimp-context-set-defaults)
+
+    (gimp-image-undo-disable image)
+
+    (if (= (car (gimp-selection-is-empty image)) TRUE)
+        (begin
+          (gimp-image-select-item image CHANNEL-OP-REPLACE drawable)
+          (set! from-selection FALSE)
+        )
+        (begin
+          (set! from-selection TRUE)
+          (set! active-selection (car (gimp-selection-save image)))
+        )
+    )
+
+    (gimp-edit-copy drawable)
+
+    (set! brush-draw-type
+          (if (= type GRAYA-IMAGE)
+              GRAY-IMAGE
+              RGBA-IMAGE))
+
+    (set! brush-image-type
+          (if (= type GRAYA-IMAGE)
+              GRAY
+              RGB))
+
+    (set! brush-image (car (gimp-image-new selection-width
+                                           selection-height
+                                           brush-image-type)))
+
+    (set! brush-draw
+          (car (gimp-layer-new brush-image
+                               selection-width
+                               selection-height
+                               brush-draw-type
+                               "Brush"
+                               100
+                               LAYER-MODE-NORMAL)))
+
+    (gimp-image-insert-layer brush-image brush-draw 0 0)
+
+    (gimp-selection-none brush-image)
+
+    (if (= type GRAYA-IMAGE)
+        (begin
+          (gimp-context-set-background '(255 255 255))
+          (gimp-drawable-fill brush-draw FILL-BACKGROUND))
+        (gimp-drawable-fill brush-draw FILL-TRANSPARENT)
+    )
+
+    (let ((floating-sel (car (gimp-edit-paste brush-draw FALSE))))
+      (gimp-floating-sel-anchor floating-sel)
+    )
+
+    (set! filename2 (string-append gimp-directory
+                                   "/brushes/"
+                                   filename
+                                   (number->string image)
+                                   ".gbr"))
+
+    (file-gbr-save 1 brush-image brush-draw filename2 "" spacing name)
+
+    (if (= from-selection TRUE)
+        (begin
+          (gimp-image-select-item image CHANNEL-OP-REPLACE active-selection)
+          (gimp-image-remove-channel image active-selection)
+        )
+    )
+
+    (gimp-image-undo-enable image)
+    (gimp-image-set-active-layer image drawable)
+    (gimp-image-delete brush-image)
+    (gimp-displays-flush)
+
+    (gimp-context-pop)
+
+    (gimp-brushes-refresh)
+    (gimp-context-set-brush name)
+  )
+)
+
+(script-fu-register "script-fu-selection-to-brush"
+  _"To _Brush..."
+  _"Convert a selection to a brush"
+  "Adrian Likins <adrian@gimp.org>"
+  "Adrian Likins"
+  "10/07/97"
+  "RGB* GRAY*"
+  SF-IMAGE       "Image"       0
+  SF-DRAWABLE    "Drawable"    0
+  SF-STRING     _"_Brush name"  "My Brush"
+  SF-STRING     _"_File name"   "mybrush"
+  SF-ADJUSTMENT _"_Spacing"     '(25 0 1000 1 1 1 0)
+)
diff --git a/plug-ins/script-fu/scripts/select-to-image.scm b/plug-ins/script-fu/scripts/select-to-image.scm
new file mode 100644
index 0000000..dec088d
--- /dev/null
+++ b/plug-ins/script-fu/scripts/select-to-image.scm
@@ -0,0 +1,89 @@
+; GIMP - The GNU Image Manipulation Program
+; Copyright (C) 1995 Spencer Kimball and Peter Mattis
+;
+; Selection to Image
+; Copyright (c) 1997 Adrian Likins
+; aklikins@eos.ncsu.edu
+;
+; Takes the Current selection and saves it as a separate image.
+;
+;
+; This program is free software: you can redistribute it and/or modify
+; it under the terms of the GNU General Public License as published by
+; the Free Software Foundation; either version 3 of the License, or
+; (at your option) any later version.
+;
+; This program is distributed in the hope that it will be useful,
+; but WITHOUT ANY WARRANTY; without even the implied warranty of
+; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+; GNU General Public License for more details.
+;
+; You should have received a copy of the GNU General Public License
+; along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+
+(define (script-fu-selection-to-image image drawable)
+  (let* (
+        (draw-type (car (gimp-drawable-type-with-alpha drawable)))
+        (image-type (car (gimp-image-base-type image)))
+        (selection-bounds (gimp-selection-bounds image))
+        (select-offset-x (cadr selection-bounds))
+        (select-offset-y (caddr selection-bounds))
+        (selection-width (- (cadr (cddr selection-bounds)) select-offset-x))
+        (selection-height (- (caddr (cddr selection-bounds)) select-offset-y))
+        (active-selection 0)
+        (from-selection 0)
+        (new-image 0)
+        (new-draw 0)
+        )
+
+    (gimp-context-push)
+    (gimp-context-set-defaults)
+
+    (gimp-image-undo-disable image)
+
+    (if (= (car (gimp-selection-is-empty image)) TRUE)
+        (begin
+          (gimp-image-select-item image CHANNEL-OP-REPLACE drawable)
+          (set! active-selection (car (gimp-selection-save image)))
+          (set! from-selection FALSE)
+        )
+        (begin
+          (set! from-selection TRUE)
+          (set! active-selection (car (gimp-selection-save image)))
+        )
+    )
+
+    (gimp-edit-copy drawable)
+
+    (set! new-image (car (gimp-image-new selection-width
+                                         selection-height image-type)))
+    (set! new-draw (car (gimp-layer-new new-image
+                                        selection-width selection-height
+                                        draw-type "Selection" 100 LAYER-MODE-NORMAL)))
+    (gimp-image-insert-layer new-image new-draw 0 0)
+    (gimp-drawable-fill new-draw FILL-BACKGROUND)
+
+    (let ((floating-sel (car (gimp-edit-paste new-draw FALSE))))
+      (gimp-floating-sel-anchor floating-sel)
+    )
+
+    (gimp-image-undo-enable image)
+    (gimp-image-set-active-layer image drawable)
+    (gimp-display-new new-image)
+    (gimp-displays-flush)
+
+    (gimp-context-pop)
+  )
+)
+
+(script-fu-register "script-fu-selection-to-image"
+  _"To _Image"
+  _"Convert a selection to an image"
+  "Adrian Likins <adrian@gimp.org>"
+  "Adrian Likins"
+  "10/07/97"
+  "RGB* GRAY*"
+  SF-IMAGE "Image"       0
+  SF-DRAWABLE "Drawable" 0
+)
diff --git a/plug-ins/script-fu/scripts/select-to-pattern.scm b/plug-ins/script-fu/scripts/select-to-pattern.scm
new file mode 100644
index 0000000..6b2f9eb
--- /dev/null
+++ b/plug-ins/script-fu/scripts/select-to-pattern.scm
@@ -0,0 +1,103 @@
+; GIMP - The GNU Image Manipulation Program
+; Copyright (C) 1995 Spencer Kimball and Peter Mattis
+;
+; Based on select-to-brush by
+;         Copyright (c) 1997 Adrian Likins aklikins@eos.ncsu.edu
+; Author Cameron Gregory, http://www.flamingtext.com/
+;
+; Takes the current selection, saves it as a pattern and makes it the active
+; pattern
+;
+; This program is free software: you can redistribute it and/or modify
+; it under the terms of the GNU General Public License as published by
+; the Free Software Foundation; either version 3 of the License, or
+; (at your option) any later version.
+;
+; This program is distributed in the hope that it will be useful,
+; but WITHOUT ANY WARRANTY; without even the implied warranty of
+; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+; GNU General Public License for more details.
+;
+; You should have received a copy of the GNU General Public License
+; along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+
+(define (script-fu-selection-to-pattern image drawable desc filename)
+
+  (let* (
+        (selection-width 0)
+        (selection-height 0)
+        (selection-bounds 0)
+        (select-offset-x 0)
+        (select-offset-y 0)
+        (pattern-draw-type 0)
+        (pattern-image-type 0)
+        (pattern-image 0)
+        (pattern-draw 0)
+        (filename2 0)
+        )
+
+  (if (= (car (gimp-selection-is-empty image)) TRUE)
+      (begin
+        (set! selection-width (car (gimp-drawable-width drawable)))
+        (set! selection-height (car (gimp-drawable-height drawable)))
+      )
+      (begin
+        (set! selection-bounds (gimp-drawable-mask-bounds drawable))
+        (set! select-offset-x (cadr selection-bounds))
+        (set! select-offset-y (caddr selection-bounds))
+        (set! selection-width (- (cadr (cddr selection-bounds)) select-offset-x))
+        (set! selection-height (- (caddr (cddr selection-bounds)) select-offset-y))
+      )
+  )
+
+  (if (= (car (gimp-drawable-has-alpha drawable)) TRUE)
+      (set! pattern-draw-type RGBA-IMAGE)
+      (set! pattern-draw-type RGB-IMAGE)
+  )
+
+  (set! pattern-image-type RGB)
+
+  (set! pattern-image (car (gimp-image-new selection-width selection-height
+                                           pattern-image-type)))
+
+  (set! pattern-draw
+        (car (gimp-layer-new pattern-image selection-width selection-height
+                             pattern-draw-type "Pattern" 100 LAYER-MODE-NORMAL)))
+
+  (gimp-drawable-fill pattern-draw FILL-TRANSPARENT)
+
+  (gimp-image-insert-layer pattern-image pattern-draw 0 0)
+
+  (gimp-edit-copy drawable)
+
+  (let ((floating-sel (car (gimp-edit-paste pattern-draw FALSE))))
+    (gimp-floating-sel-anchor floating-sel))
+
+  (set! filename2 (string-append gimp-directory
+                                 "/patterns/"
+                                 filename
+                                 (number->string image)
+                                 ".pat"))
+
+  (file-pat-save 1 pattern-image pattern-draw filename2 "" desc)
+  (gimp-patterns-refresh)
+  (gimp-context-set-pattern desc)
+
+  (gimp-image-delete pattern-image)
+  (gimp-displays-flush)
+  )
+)
+
+(script-fu-register "script-fu-selection-to-pattern"
+  _"To _Pattern..."
+  _"Convert a selection to a pattern"
+  "Cameron Gregory <cameron@bloke.com>"
+  "Cameron Gregory"
+  "09/02/2003"
+  "RGB* GRAY*"
+  SF-IMAGE     "Image"        0
+  SF-DRAWABLE  "Drawable"     0
+  SF-STRING   _"_Pattern name" "My Pattern"
+  SF-STRING   _"_File name"    "mypattern"
+)
diff --git a/plug-ins/script-fu/scripts/selection-round.scm b/plug-ins/script-fu/scripts/selection-round.scm
new file mode 100644
index 0000000..afbc91c
--- /dev/null
+++ b/plug-ins/script-fu/scripts/selection-round.scm
@@ -0,0 +1,164 @@
+; selection-rounded-rectangle.scm -*-scheme-*-
+
+; GIMP - The GNU Image Manipulation Program
+; Copyright (C) 1995 Spencer Kimball and Peter Mattis
+;
+; This program is free software: you can redistribute it and/or modify
+; it under the terms of the GNU General Public License as published by
+; the Free Software Foundation; either version 3 of the License, or
+; (at your option) any later version.
+;
+; This program is distributed in the hope that it will be useful,
+; but WITHOUT ANY WARRANTY; without even the implied warranty of
+; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+; GNU General Public License for more details.
+;
+; You should have received a copy of the GNU General Public License
+; along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+; CHANGE-LOG:
+; 1.00 - initial release
+; 1.01 - some code cleanup, no real changes
+; 1.02 - made script undoable
+
+; 2.00 - ALAN's Branch.  changed name, menu, location, and description
+; 2.01 - fixed to work if there was no current selection.
+; 2.02 - changed scale to percentages, usability tweaking.
+; 2.10 - added concave round edges, updated description.
+; 2.11 - tweeked description, changed comments, relinquished any rights.
+
+; Copyright (C) 1997, 1998, Sven Neumann
+; Copyright (C) 2004, Alan Horkan.
+; Alan Horkan relinquishes all rights to his changes,
+; full ownership of this script belongs to Sven Neumann.
+
+(define (script-fu-selection-rounded-rectangle image drawable radius concave)
+  (gimp-image-undo-group-start image)
+
+  (if (= (car (gimp-selection-is-empty image)) TRUE) (gimp-selection-all image))
+  (let* (
+        (radius (/ radius 100)) ; convert from percentages
+        (radius (min radius 1.0))
+        (radius (max radius 0.0))
+        (select-bounds (gimp-selection-bounds image))
+        (has-selection (car select-bounds))
+        (select-x1 (cadr select-bounds))
+        (select-y1 (caddr select-bounds))
+        (select-x2 (cadr (cddr select-bounds)))
+        (select-y2 (caddr (cddr select-bounds)))
+        (select-width (- select-x2 select-x1))
+        (select-height (- select-y2 select-y1))
+        (cut-radius 0)
+        (ellipse-radius 0)
+        )
+
+    (gimp-context-push)
+    (gimp-context-set-defaults)
+
+    ;; select to the full bounds of the selection,
+    ;; fills in irregular shapes or holes.
+    (gimp-image-select-rectangle image CHANNEL-OP-ADD
+              select-x1 select-y1 select-width select-height)
+
+    (if (> select-width select-height)
+      (set! cut-radius (trunc (+ 1 (* radius (/ select-height 2)))))
+      (set! cut-radius (trunc (+ 1 (* radius (/ select-width 2)))))
+    )
+    (set! ellipse-radius (* cut-radius 2))
+
+    (gimp-context-set-antialias TRUE)
+    ;; cut away rounded (concave) corners
+    ; top right
+    (gimp-image-select-ellipse image CHANNEL-OP-SUBTRACT
+                               (- select-x1 cut-radius)
+                               (- select-y1 cut-radius)
+                               (* cut-radius 2)
+                               (* cut-radius 2))
+    ; lower left
+    (gimp-image-select-ellipse image CHANNEL-OP-SUBTRACT
+                               (- select-x1 cut-radius)
+                               (- select-y2 cut-radius)
+                               (* cut-radius 2)
+                               (* cut-radius 2))
+    ; top right
+    (gimp-image-select-ellipse image CHANNEL-OP-SUBTRACT
+                               (- select-x2 cut-radius)
+                               (- select-y1 cut-radius)
+                               (* cut-radius 2)
+                               (* cut-radius 2))
+    ; bottom left
+    (gimp-image-select-ellipse image CHANNEL-OP-SUBTRACT
+                               (- select-x2 cut-radius)
+                               (- select-y2 cut-radius)
+                               (* cut-radius 2)
+                               (* cut-radius 2))
+
+    ;; add in rounded (convex) corners
+    (if (= concave FALSE)
+      (begin
+        (gimp-image-select-ellipse image
+                                   CHANNEL-OP-ADD
+                                   select-x1
+                                   select-y1
+                                   ellipse-radius
+                                   ellipse-radius)
+        (gimp-image-select-ellipse image
+                                   CHANNEL-OP-ADD
+                                   select-x1
+                                   (- select-y2 ellipse-radius)
+                                   ellipse-radius
+                                   ellipse-radius)
+        (gimp-image-select-ellipse image
+                                   CHANNEL-OP-ADD
+                                   (- select-x2 ellipse-radius)
+                                   select-y1
+                                   ellipse-radius
+                                   ellipse-radius)
+        (gimp-image-select-ellipse image
+                                   CHANNEL-OP-ADD
+                                   (- select-x2 ellipse-radius)
+                                   (- select-y2 ellipse-radius)
+                                   ellipse-radius
+                                   ellipse-radius)
+      )
+    )
+
+    (gimp-image-undo-group-end image)
+    (gimp-displays-flush)
+    (gimp-context-pop)
+  )
+)
+
+
+(define (script-fu-selection-round image drawable radius)
+  (script-fu-selection-rounded-rectangle image drawable (* radius 100) FALSE)
+)
+
+
+(script-fu-register "script-fu-selection-rounded-rectangle"
+  _"Rounded R_ectangle..."
+  _"Round the corners of the current selection"
+  "Alan Horkan, Sven Neumann" ; authors
+  "Sven Neumann"              ; copyright
+  "2004/06/07"
+  "*"
+  SF-IMAGE       "Image"      0
+  SF-DRAWABLE    "Drawable"   0
+  SF-ADJUSTMENT _"R_adius (%)" '(50 0 100 1 10 0 0)
+  SF-TOGGLE     _"Co_ncave"    FALSE
+)
+
+(script-fu-register "script-fu-selection-round"
+  ""
+  "This procedure is deprecated! Use 'script-fu-selection-rounded-rectangle' instead."
+  "Sven Neumann"              ; authors
+  "Sven Neumann"              ; copyright
+  "1998/02/06"
+  "*"
+  SF-IMAGE       "Image"      0
+  SF-DRAWABLE    "Drawable"   0
+  SF-ADJUSTMENT  "Relative radius" '(1 0 128 0.1 1 1 1)
+)
+
+(script-fu-menu-register "script-fu-selection-rounded-rectangle"
+                         "<Image>/Select/Modify")
diff --git a/plug-ins/script-fu/scripts/slide.scm b/plug-ins/script-fu/scripts/slide.scm
new file mode 100644
index 0000000..4889d62
--- /dev/null
+++ b/plug-ins/script-fu/scripts/slide.scm
@@ -0,0 +1,261 @@
+; GIMP - The GNU Image Manipulation Program
+; Copyright (C) 1995 Spencer Kimball and Peter Mattis
+;
+; This program is free software: you can redistribute it and/or modify
+; it under the terms of the GNU General Public License as published by
+; the Free Software Foundation; either version 3 of the License, or
+; (at your option) any later version.
+;
+; This program is distributed in the hope that it will be useful,
+; but WITHOUT ANY WARRANTY; without even the implied warranty of
+; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+; GNU General Public License for more details.
+;
+; You should have received a copy of the GNU General Public License
+; along with this program.  If not, see <https://www.gnu.org/licenses/>.
+;
+;
+; slide.scm   version 0.41   2004/03/28
+;
+; CHANGE-LOG:
+; 0.20 - first public release
+; 0.30 - some code cleanup
+;        now uses the rotate plug-in to improve speed
+; 0.40 - changes to work with gimp-1.1
+;        if the image was rotated, rotate the whole thing back when finished
+; 0.41 - changes to work with gimp-2.0, slightly correct text offsets,
+;        Nils Philippsen <nphilipp@redhat.com> 2004/03/28
+;
+; !still in development!
+; TODO: - change the script so that the film is rotated, not the image
+;       - antialiasing
+;       - make 'add background' an option
+;       - ?
+;
+; Copyright (C) 1997-1999 Sven Neumann <sven@gimp.org>
+;
+; makes your picture look like a slide
+;
+; The script works on RGB and grayscale images that contain only
+; one layer. The image is cropped to fit into an aspect ratio of 1:1,5.
+; It creates a copy of the image or can optionally work on the original.
+; The script uses the current background color to create a background
+; layer.
+
+
+(define (script-fu-slide img
+                         drawable
+                         text
+                         number
+                         fontname
+                         font-color
+                         work-on-copy)
+
+  (define (crop width height ratio)
+    (if (>= width (* ratio height))
+        (* ratio height)
+        width
+    )
+  )
+
+  (let* (
+        (type (car (gimp-drawable-type-with-alpha drawable)))
+        (image (cond ((= work-on-copy TRUE)
+                      (car (gimp-image-duplicate img)))
+                     ((= work-on-copy FALSE)
+                      img)))
+        (owidth (car (gimp-image-width image)))
+        (oheight (car (gimp-image-height image)))
+        (ratio (if (>= owidth oheight) (/ 3 2)
+                                       (/ 2 3)))
+        (crop-width (crop owidth oheight ratio))
+        (crop-height (/ crop-width ratio))
+        (width (* (max crop-width crop-height) 1.05))
+        (height (* (min crop-width crop-height) 1.5))
+        (hole-width (/ width 20))
+        (hole-space (/ width 8))
+        (hole-height (/ width 12))
+        (hole-radius (/ hole-width 4))
+        (hole-start (- (/ (rand 1000) 1000) 0.5))
+        (film-layer (car (gimp-layer-new image
+                                         width
+                                         height
+                                         type
+                                         "Film"
+                                         100
+                                         LAYER-MODE-NORMAL)))
+        (bg-layer (car (gimp-layer-new image
+                                       width
+                                       height
+                                       type
+                                       "Background"
+                                       100
+                                       LAYER-MODE-NORMAL)))
+        (pic-layer (car (gimp-image-get-active-drawable image)))
+        (numbera (string-append number "A"))
+        )
+
+  (gimp-context-push)
+  (gimp-context-set-paint-mode LAYER-MODE-NORMAL)
+  (gimp-context-set-opacity 100.0)
+  (gimp-context-set-feather FALSE)
+
+  (if (= work-on-copy TRUE)
+      (gimp-image-undo-disable image)
+      (gimp-image-undo-group-start image)
+  )
+
+; add an alpha channel to the image
+  (gimp-layer-add-alpha pic-layer)
+
+; crop, resize and eventually rotate the image
+  (gimp-image-crop image
+                   crop-width
+                   crop-height
+                   (/ (- owidth crop-width) 2)
+                   (/ (- oheight crop-height) 2))
+  (gimp-image-resize image
+                     width
+                     height
+                     (/ (- width crop-width) 2)
+                     (/ (- height crop-height) 2))
+  (if (< ratio 1)
+      (plug-in-rotate RUN-NONINTERACTIVE image pic-layer 1 FALSE)
+  )
+
+; add the background layer
+  (gimp-drawable-fill bg-layer FILL-BACKGROUND)
+  (gimp-image-insert-layer image bg-layer 0 -1)
+
+; add the film layer
+  (gimp-context-set-background '(0 0 0))
+  (gimp-drawable-fill film-layer FILL-BACKGROUND)
+  (gimp-image-insert-layer image film-layer 0 -1)
+
+; add the text
+  (gimp-context-set-foreground font-color)
+  (gimp-floating-sel-anchor (car (gimp-text-fontname image
+                                            film-layer
+                                            (+ hole-start (* -0.25 width))
+                                            (* 0.01 height)
+                                            text
+                                            0
+                                            TRUE
+                                            (* 0.040 height) PIXELS fontname)))
+  (gimp-floating-sel-anchor (car (gimp-text-fontname image
+                                            film-layer
+                                            (+ hole-start (* 0.75 width))
+                                            (* 0.01 height)
+                                            text
+                                            0
+                                            TRUE
+                                            (* 0.040 height) PIXELS
+                                            fontname )))
+  (gimp-floating-sel-anchor (car (gimp-text-fontname image
+                                            film-layer
+                                            (+ hole-start (* 0.35 width))
+                                            0.0
+                                            number
+                                            0
+                                            TRUE
+                                            (* 0.050 height) PIXELS
+                                            fontname )))
+  (gimp-floating-sel-anchor (car (gimp-text-fontname image
+                                            film-layer
+                                            (+ hole-start (* 0.35 width))
+                                            (* 0.94 height)
+                                            number
+                                            0
+                                            TRUE
+                                            (* 0.050 height) PIXELS
+                                            fontname )))
+  (gimp-floating-sel-anchor (car (gimp-text-fontname image
+                                            film-layer
+                                            (+ hole-start (* 0.85 width))
+                                            (* 0.945 height)
+                                            numbera
+                                            0
+                                            TRUE
+                                            (* 0.045 height) PIXELS
+                                            fontname )))
+
+; create a mask for the holes and cut them out
+  (let* (
+        (film-mask (car (gimp-layer-create-mask film-layer ADD-MASK-WHITE)))
+        (hole hole-start)
+        (top-y (* height 0.06))
+        (bottom-y (* height 0.855))
+        )
+
+    (gimp-layer-add-mask film-layer film-mask)
+
+    (gimp-selection-none image)
+    (while (< hole 8)
+           (gimp-image-select-rectangle image
+                                        CHANNEL-OP-ADD
+                                        (* hole-space hole)
+                                        top-y
+                                        hole-width
+                                        hole-height)
+           (gimp-image-select-rectangle image
+                                        CHANNEL-OP-ADD
+                                        (* hole-space hole)
+                                        bottom-y
+                                        hole-width
+                                        hole-height)
+           (set! hole (+ hole 1))
+    )
+
+    (gimp-context-set-foreground '(0 0 0))
+    (gimp-drawable-edit-fill film-mask FILL-BACKGROUND)
+    (gimp-selection-none image)
+    (plug-in-gauss-rle RUN-NONINTERACTIVE image film-mask hole-radius TRUE TRUE)
+    (gimp-threshold film-mask 127 255)
+
+    (gimp-layer-remove-mask film-layer MASK-APPLY)
+  )
+
+; reorder the layers
+  (gimp-image-raise-item image pic-layer)
+  (gimp-image-raise-item image pic-layer)
+
+; eventually rotate the whole thing back
+  (if (< ratio 1)
+      (plug-in-rotate RUN-NONINTERACTIVE image pic-layer 3 TRUE)
+  )
+
+; clean up after the script
+  (gimp-selection-none image)
+
+  (if (= work-on-copy TRUE)
+    (begin
+      (gimp-display-new image)
+      (gimp-image-undo-enable image)
+    )
+    (gimp-image-undo-group-end image)
+  )
+
+  (gimp-displays-flush)
+
+  (gimp-context-pop)
+  )
+)
+
+(script-fu-register "script-fu-slide"
+  _"_Slide..."
+  _"Add a slide-film like frame, sprocket holes, and labels to an image"
+  "Sven Neumann <sven@gimp.org>"
+  "Sven Neumann"
+  "2004/03/28"
+  "RGB GRAY"
+  SF-IMAGE     "Image"         0
+  SF-DRAWABLE  "Drawable"      0
+  SF-STRING   _"Text"          "GIMP"
+  SF-STRING   _"Number"        "32"
+  SF-FONT     _"Font"          "Serif"
+  SF-COLOR    _"Font color"    '(255 180 0)
+  SF-TOGGLE   _"Work on copy"  TRUE
+)
+
+(script-fu-menu-register "script-fu-slide"
+                         "<Image>/Filters/Decor")
diff --git a/plug-ins/script-fu/scripts/spinning-globe.scm b/plug-ins/script-fu/scripts/spinning-globe.scm
new file mode 100644
index 0000000..1549830
--- /dev/null
+++ b/plug-ins/script-fu/scripts/spinning-globe.scm
@@ -0,0 +1,110 @@
+;
+; anim_sphere
+;
+;
+; Chris Gutteridge (cjg@ecs.soton.ac.uk)
+; At ECS Dept, University of Southampton, England.
+; This program is free software: you can redistribute it and/or modify
+; it under the terms of the GNU General Public License as published by
+; the Free Software Foundation; either version 3 of the License, or
+; (at your option) any later version.
+;
+; This program is distributed in the hope that it will be useful,
+; but WITHOUT ANY WARRANTY; without even the implied warranty of
+; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+; GNU General Public License for more details.
+;
+; You should have received a copy of the GNU General Public License
+; along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+
+; Define the function:
+
+(define (script-fu-spinning-globe inImage
+                                  inLayer
+                                  inFrames
+                                  inFromLeft
+                                  inTransparent
+                                  inIndex
+                                  inCopy)
+  (let* (
+        (theImage (if (= inCopy TRUE)
+                      (car (gimp-image-duplicate inImage))
+                      inImage))
+        (theLayer (car (gimp-image-get-active-layer theImage)))
+        (n 0)
+        (ang (* (/ 360 inFrames)
+                (if (= inFromLeft TRUE) 1 -1) ))
+        (theFrame 0)
+        )
+
+  (gimp-layer-add-alpha theLayer)
+
+  (while (> inFrames n)
+    (set! n (+ n 1))
+    (set! theFrame (car (gimp-layer-copy theLayer FALSE)))
+    (gimp-image-insert-layer theImage theFrame 0 0)
+    (gimp-item-set-name theFrame
+                         (string-append "Anim Frame: "
+                                        (number->string (- inFrames n) 10)
+                                        " (replace)"))
+    (plug-in-map-object RUN-NONINTERACTIVE
+                        theImage theFrame    ; mapping
+                        1                    ; viewpoint
+                        0.5 0.5 2.0          ; object pos
+                        0.5 0.5 0.0          ; first axis
+                        1.0 0.0 0.0          ; 2nd axis
+                        0.0 1.0 0.0          ; axis rotation
+                        0.0 (* n ang) 0.0    ; light (type, color)
+                        0 '(255 255 255)     ; light position
+                        -0.5 -0.5 2.0        ; light direction
+                        -1.0 -1.0 1.0  ; material (amb, diff, refl, spec, high)
+                        0.3 1.0 0.5 0.0 27.0 ; antialias
+                        TRUE                 ; tile
+                        FALSE                ; new image
+                        FALSE                ; transparency
+                        inTransparent        ; radius
+                        0.25                 ; unused parameters
+                        1.0 1.0 1.0 1.0
+                        -1 -1 -1 -1 -1 -1 -1 -1
+    )
+  )
+
+  (gimp-image-remove-layer theImage theLayer)
+  (plug-in-autocrop RUN-NONINTERACTIVE theImage theFrame)
+
+  (if (= inIndex 0)
+      ()
+      (gimp-image-convert-indexed theImage CONVERT-DITHER-FS CONVERT-PALETTE-GENERATE inIndex
+                                  FALSE FALSE ""))
+
+  (if (= inCopy TRUE)
+    (begin
+      (gimp-image-clean-all theImage)
+      (gimp-display-new theImage)
+    )
+  )
+
+  (gimp-displays-flush)
+  )
+)
+
+(script-fu-register
+  "script-fu-spinning-globe"
+  _"_Spinning Globe..."
+  _"Create an animation by mapping the current image onto a spinning sphere"
+  "Chris Gutteridge"
+  "1998, Chris Gutteridge / ECS dept, University of Southampton, England."
+  "16th April 1998"
+  "RGB* GRAY*"
+  SF-IMAGE       "The Image"               0
+  SF-DRAWABLE    "The Layer"               0
+  SF-ADJUSTMENT _"Frames"                  '(10 1 360 1 10 0 1)
+  SF-TOGGLE     _"Turn from left to right" FALSE
+  SF-TOGGLE     _"Transparent background"  TRUE
+  SF-ADJUSTMENT _"Index to n colors (0 = remain RGB)" '(63 0 256 1 10 0 1)
+  SF-TOGGLE     _"Work on copy"            TRUE
+)
+
+(script-fu-menu-register "script-fu-spinning-globe"
+                         "<Image>/Filters/Animation/Animators")
diff --git a/plug-ins/script-fu/scripts/spyrogimp.scm b/plug-ins/script-fu/scripts/spyrogimp.scm
new file mode 100644
index 0000000..0a1e40c
--- /dev/null
+++ b/plug-ins/script-fu/scripts/spyrogimp.scm
@@ -0,0 +1,352 @@
+; spyrogimp.scm -*-scheme-*-
+; Draws Spirographs, Epitrochoids and Lissajous Curves.
+; More info at http://www.wisdom.weizmann.ac.il/~elad/spyrogimp/
+; Version 1.2
+;
+; Copyright (C) 2003 by Elad Shahar <elad@wisdom.weizmann.ac.il>
+;
+; This program is free software: you can redistribute it and/or modify
+; it under the terms of the GNU General Public License as published by
+; the Free Software Foundation; either version 3 of the License, or
+; (at your option) any later version.
+;
+; This program is distributed in the hope that it will be useful,
+; but WITHOUT ANY WARRANTY; without even the implied warranty of
+; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+; GNU General Public License for more details.
+;
+; You should have received a copy of the GNU General Public License
+; along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+
+; This routine is invoked by a dialog.
+; It is the main routine in this file.
+(define (script-fu-spyrogimp img drw
+                             type shape
+                             oteeth iteeth
+                             margin hole-ratio start-angle
+                             tool brush
+                             color-method color grad)
+
+  ; Internal function to draw the spyro.
+  (define (script-fu-spyrogimp-internal img drw
+               x1 y1 x2 y2   ; Bounding box.
+               type          ; = 0 (Spirograph), 1 (Epitrochoid), 2(Lissajous) .
+               shape         ; = 0 (Circle), 1 (Frame), >2 (Polygons) .
+               oteeth iteeth ; Outer and inner teeth.
+               margin hole-ratio
+               start-angle   ; 0 <= start-angle < 360 .
+               tool          ; = 0 (Pencil), 1 (Brush), 2 (Airbrush) .
+               brush
+               color-method  ; = 0 (Single color), 1 (Grad. Loop Sawtooth),
+                             ;   2 (Grad. Loop triangle) .
+               color         ; Used when color-method = Single color .
+               grad          ; Gradient used in Gradient color methods.
+          )
+
+
+    ; This function returns a list of samples according to the gradient.
+    (define (get-gradient steps color-method grad)
+      (if (= color-method 1)
+          ; option 1
+          ; Just return the gradient
+          (gimp-gradient-get-uniform-samples grad (min steps 50) FALSE)
+
+          ; option 2
+          ; The returned list is such that the gradient appears two times, once
+          ; in the normal order and once in reverse. This way there are no color
+          ; jumps if we go beyond the edge
+          (let* (
+                ; Sample the gradient into array "gr".
+                (gr (gimp-gradient-get-uniform-samples grad
+                                                       (/ (min steps 50) 2)
+                                                       FALSE))
+
+                (grn (car gr))  ; length of sample array.
+                (gra (cadr gr)) ; array of color samples (R1,G1,B1,A1, R2,....)
+
+                ; Allocate array gra-new of size  (2 * grn) - 8,
+                ; but since each 4 items is actually one (RGBA) tuple,
+                ; it contains 2x - 2 entries.
+                (grn-new (+ grn grn -8))
+                (gra-new (cons-array grn-new 'double))
+
+                (gr-index 0)
+                (gr-index2 0)
+                )
+
+            ; Copy original array gra to gra_new.
+            (while (< gr-index grn)
+               (aset gra-new gr-index (aref gra gr-index))
+               (set! gr-index (+ 1 gr-index))
+            )
+
+            ; Copy second time, but in reverse
+            (set! gr-index2 (- gr-index 8))
+            (while (< gr-index grn-new)
+               (aset gra-new gr-index (aref gra gr-index2))
+               (set! gr-index (+ 1 gr-index))
+               (set! gr-index2 (+ 1 gr-index2))
+
+               (if (= (fmod gr-index 4) 0)
+                 (set! gr-index2 (- gr-index2 8))
+               )
+            )
+
+            ; Return list.
+            (list grn-new gra-new)
+          )
+      )
+    )
+
+
+    (let* (
+          (steps (+ 1 (lcm oteeth iteeth)))
+          (*points* (cons-array (* steps 2) 'double))
+
+          (ot 0)                         ; current outer tooth
+          (cx 0)                         ; Current x,y
+          (cy 0)
+
+          ; If its a polygon or frame, how many sides does it have.
+          (poly (if (= shape 1) 4   ; A frame has four sides.
+                                (if (> shape 1) (+ shape 1) 0)))
+
+          (2pi (* 2 *pi*))
+
+          (drw-width (- x2 x1))
+          (drw-height (- y2 y1))
+          (half-width (/ drw-width 2))
+          (half-height (/ drw-height 2))
+          (midx (+ x1 half-width))
+          (midy (+ y1 half-height))
+
+          (hole (* hole-ratio
+                   (- (/ (min drw-width drw-height) 2) margin)
+                )
+          )
+          (irad (+ hole margin))
+
+          (radx (- half-width irad))  ;
+          (rady (- half-height irad)) ;
+
+          (gradt (get-gradient steps color-method grad))
+          (grada (cadr gradt)) ; Gradient array.
+          (gradn (car gradt))  ; Number of entries of gradients.
+
+          ; Indexes
+          (grad-index 0)  ; for array: grada
+          (point-index 0) ; for array: *points*
+          (index 0)
+          )
+
+      ; Do one step of the loop.
+      (define (calc-and-step!)
+        (let* (
+              (oangle (* 2pi (/ ot oteeth)) )
+              (shifted-oangle (+ oangle (* 2pi (/ start-angle 360))) )
+              (xfactor (cos shifted-oangle))
+              (yfactor (sin shifted-oangle))
+              (lenfactor 1)
+              (ofactor (/ (+ oteeth iteeth) iteeth))
+
+              ; The direction of the factor changes according
+              ; to whether the type is a sypro or an epitcorhoid.
+              (mfactor (if (= type 0) (- ofactor) ofactor))
+              )
+
+          ; If we are drawing a polygon then compute a contortion
+          ; factor "lenfactor" which deforms the standard circle.
+          (if (> poly 2)
+            (let* (
+                  (pi4 (/ *pi* poly))
+                  (pi2 (* pi4 2))
+
+                  (oanglemodpi2 (fmod (+ oangle
+                                        (if (= 1 (fmod poly 2))
+                                           0 ;(/ pi4 2)
+                                           0
+                                        )
+                                      )
+                                      pi2))
+                  )
+
+                  (set! lenfactor (/ ( if (= shape 1) 1 (cos pi4) )
+                                     (cos
+                                       (if (< oanglemodpi2 pi4)
+                                         oanglemodpi2
+                                         (- pi2 oanglemodpi2)
+                                       )
+                                     )
+                                  )
+                  )
+            )
+          )
+
+          (if (= type 2)
+            (begin  ; Lissajous
+              (set! cx (+ midx
+                          (* half-width (cos shifted-oangle)) ))
+              (set! cy (+ midy
+                          (* half-height (cos (* mfactor oangle))) ))
+            )
+            (begin  ; Spyrograph or Epitrochoid
+             (set! cx (+ midx
+                         (* radx xfactor lenfactor)
+                         (* hole (cos (* mfactor oangle) ) ) ))
+             (set! cy (+ midy
+                         (* rady yfactor lenfactor)
+                         (* hole (sin (* mfactor oangle) ) ) ))
+            )
+          )
+
+        ;; Advance teeth
+        (set! ot (+ ot 1))
+        )
+      )
+
+
+      ;; Draw all the points in *points* with appropriate tool.
+      (define (flush-points len)
+        (if (= tool 0)
+          (gimp-pencil drw len *points*)              ; Use pencil
+          (if (= tool 1)
+            (gimp-paintbrush-default drw len *points*); use paintbrush
+            (gimp-airbrush-default drw len *points*)  ; use airbrush
+          )
+        )
+
+        ; Reset points array, but copy last point to first
+        ; position so it will connect the next time.
+        (aset *points* 0 (aref *points* (- point-index 2)))
+        (aset *points* 1 (aref *points* (- point-index 1)))
+        (set! point-index 2)
+      )
+
+   ;;
+   ;; Execution starts here.
+   ;;
+
+      (gimp-context-push)
+
+      (gimp-image-undo-group-start img)
+
+      ; Set new color, brush, opacity, paint mode.
+      (gimp-context-set-foreground color)
+      (gimp-context-set-brush (car brush))
+      (gimp-context-set-opacity (car (cdr brush)))
+      (gimp-context-set-paint-mode (car (cdr (cdr (cdr brush)))))
+
+      (gimp-progress-set-text _"Rendering Spyro")
+
+      (while (< index steps)
+
+          (calc-and-step!)
+
+          (aset *points* point-index cx)
+          (aset *points* (+ point-index 1) cy)
+          (set! point-index (+ point-index 2))
+
+          ; Change color and draw points if using gradient.
+          (if (< 0 color-method)  ; use gradient.
+             (if (< (/ (+ grad-index 4) gradn) (/ index steps))
+               (begin
+                (gimp-context-set-foreground
+                  (list
+                    (* 255 (aref grada grad-index))
+                    (* 255 (aref grada (+ 1 grad-index)) )
+                    (* 255 (aref grada (+ 2 grad-index)) )
+                  )
+                )
+                (gimp-context-set-opacity (* 100 (aref grada (+ 3 grad-index) ) )  )
+                (set! grad-index (+ 4 grad-index))
+
+                ; Draw points
+                (flush-points point-index)
+               )
+             )
+          )
+
+          (set! index (+ index 1))
+
+	  (if (= 0 (modulo index 16))
+	      (gimp-progress-update (/ index steps))
+	  )
+      )
+
+      ; Draw remaining points.
+      (flush-points point-index)
+
+      (gimp-progress-update 1.0)
+
+      (gimp-image-undo-group-end img)
+      (gimp-displays-flush)
+
+      (gimp-context-pop)
+    )
+  )
+
+  (let* (
+        ; Get current selection to determine where to draw.
+        (bounds (cdr (gimp-selection-bounds img)))
+        (x1 (car bounds))
+        (y1 (cadr bounds))
+        (x2 (caddr bounds))
+        (y2 (car (cdddr bounds)))
+        )
+
+    (set! oteeth (trunc (+ oteeth 0.5)))
+    (set! iteeth (trunc (+ iteeth 0.5)))
+
+    (script-fu-spyrogimp-internal img drw
+             x1 y1 x2 y2
+             type shape
+             oteeth iteeth
+             margin hole-ratio start-angle
+             tool brush
+             color-method color grad)
+  )
+)
+
+
+
+(script-fu-register "script-fu-spyrogimp"
+  _"_Spyrogimp (older script-fu version)..."
+  _"This procedure is deprecated! Use 'plug-in-spyrogimp' instead."
+  "Elad Shahar <elad@wisdom.weizmann.ac.il>"
+  "Elad Shahar"
+  "June 2003"
+  "RGB*, INDEXED*, GRAY*"
+  SF-IMAGE       "Image"         0
+  SF-DRAWABLE    "Drawable"      0
+
+  SF-OPTION     _"Type"          '(_"Spyrograph"
+                                   _"Epitrochoid"
+                                   _"Lissajous")
+  SF-OPTION     _"Shape"         '(_"Circle"
+                                    _"Frame"
+                                   _"Triangle"
+                                   _"Square"
+                                   _"Pentagon"
+                                   _"Hexagon"
+                                   _"Polygon: 7 sides"
+                                   _"Polygon: 8 sides"
+                                   _"Polygon: 9 sides"
+                                   _"Polygon: 10 sides")
+  SF-ADJUSTMENT _"Outer teeth"   '(86 1 120 1 10 0 0)
+  SF-ADJUSTMENT _"Inner teeth"   '(70 1 120 1 10 0 0)
+  SF-ADJUSTMENT _"Margin (pixels)" '(0 -10000 10000 1 10 0 1)
+  SF-ADJUSTMENT _"Hole ratio"    '(0.4 0.0 1.0 0.01 0.1 2 0)
+  SF-ADJUSTMENT _"Start angle"   '(0 0 359 1 10 0 0)
+
+  SF-OPTION     _"Tool"          '(_"Pencil"
+                                   _"Brush"
+                                   _"Airbrush")
+  SF-BRUSH      _"Brush"         '("Circle (01)" 100 -1 0)
+
+  SF-OPTION     _"Color method"  '(_"Solid Color"
+                                   _"Gradient: Loop Sawtooth"
+                                   _"Gradient: Loop Triangle")
+  SF-COLOR      _"Color"          "black"
+  SF-GRADIENT   _"Gradient"       "Deep Sea"
+)
diff --git a/plug-ins/script-fu/scripts/test-sphere.scm b/plug-ins/script-fu/scripts/test-sphere.scm
new file mode 100644
index 0000000..763e9b0
--- /dev/null
+++ b/plug-ins/script-fu/scripts/test-sphere.scm
@@ -0,0 +1,307 @@
+; This is a a test script to show and test the possibilities of the
+; Script-Fu parameter API.
+;
+; ----------------------------------------------------------------------
+; SF-ADJUSTMENT
+; is only useful in interactive mode, if you call a script from
+; the console, it acts just like a normal SF-VALUE
+; In interactive mode it creates an adjustment widget in the dialog.
+;
+; Usage:
+; SF-ADJUSTMENT "label" '(value lower upper step_inc page_inc digits type)
+;
+; type is one of: SF-SLIDER(0), SF-SPINNER(1)
+;
+; ----------------------------------------------------------------------
+; SF-COLOR
+; creates a color button in the dialog. It accepts either a list of three
+; values for the red, green and blue components or a color name in CSS
+; notatation
+;
+; Usage:
+; SF-COLOR "label" '(red green blue)
+; SF-COLOR "label" "color"
+;
+; ----------------------------------------------------------------------
+; SF-FONT
+; creates a font-selection widget in the dialog. It returns a fontname as
+; a string. There are two new gimp-text procedures to ease the use of this
+; return parameter:
+;
+;  (gimp-text-fontname image drawable
+;                      x-pos y-pos text border antialias size unit font)
+;  (gimp-text-get-extents-fontname text size unit font))
+;
+; where font is the fontname you get. The size specified in the fontname
+; is silently ignored. It is only used in the font-selector. So you are
+; asked to set it to a useful value (24 pixels is a good choice) when
+; using SF-FONT.
+;
+; Usage:
+; SF-FONT "label" "fontname"
+;
+; ----------------------------------------------------------------------
+; SF-BRUSH
+; is only useful in interactive mode. It will create a widget in the control
+; dialog. The widget consists of a preview area (which when pressed will
+; produce a popup preview ) and a button with the "..." label. The button will
+; popup a dialog where brushes can be selected and each of the
+; characteristics of the brush can be modified.
+;
+; The actual value returned when the script is invoked is a list
+; consisting of Brush name, opacity, spacing and brush mode in the same
+; units as passed in as the default value.
+;
+; Usage:
+; SF-BRUSH "Brush" '("Circle (03)" 100 44 0)
+;
+; Here the brush dialog will be popped up with a default brush of Circle (03)
+; opacity 100 spacing 44 and paint mode of Normal (value 0).
+; If this selection was unchanged the value passed to the function as a
+; parameter would be '("Circle (03)" 100 44 0).
+;
+; ----------------------------------------------------------------------
+; SF-PATTERN
+; Only useful in interactive mode. It will create a widget in the control
+; dialog. The widget consists of a preview area (which when pressed will
+; produce a popup preview ) and a button with the "..." label. The button will
+; popup a dialog where patterns can be selected.
+;
+; Usage:
+; SF-PATTERN "Pattern" "Maple Leaves"
+;
+; The value returned when the script is invoked is a string containing the
+; pattern name. If the above selection was not altered the string would
+; contain "Maple Leaves"
+;
+; ----------------------------------------------------------------------
+; SF-GRADIENT
+; Only useful in interactive mode. It will create a widget in the control
+; dialog. The widget consists of a button containing a preview of the selected
+; gradient. If the button is pressed a gradient selection dialog will popup.
+;
+; Usage:
+; SF-GRADIENT "Gradient" "Deep Sea"
+;
+; The value returned when the script is invoked is a string containing the
+; gradient name. If the above selection was not altered the string would
+; contain "Deep Sea"
+;
+; ----------------------------------------------------------------------
+; SF-PALETTE
+; Only useful in interactive mode. It will create a widget in the control
+; dialog. The widget consists of a button containing a preview of the selected
+; palette. If the button is pressed a palette selection dialog will popup.
+;
+; Usage:
+; SF-PALETTE "Palette" "Named Colors"
+;
+; The value returned when the script is invoked is a string containing the
+; palette name. If the above selection was not altered the string would
+; contain "Named Colors"
+;
+; ----------------------------------------------------------------------
+; SF-FILENAME
+; Only useful in interactive mode. It will create a widget in the control
+; dialog. The widget consists of a button containing the name of a file.
+; If the button is pressed a file selection dialog will popup.
+;
+; Usage:
+; SF-FILENAME "Environment Map"
+;             (string-append "" gimp-data-directory "/scripts/beavis.jpg")
+;
+; The value returned when the script is invoked is a string containing the
+; filename.
+;
+; ----------------------------------------------------------------------
+; SF-DIRNAME
+; Only useful in interactive mode. Very similar to SF-FILENAME, but the
+; created widget allows to choose a directory instead of a file.
+;
+; Usage:
+; SF-DIRNAME "Image Directory" "/var/tmp/images"
+;
+; The value returned when the script is invoked is a string containing the
+; dirname.
+;
+; ----------------------------------------------------------------------
+; SF-OPTION
+; Only useful in interactive mode. It will create a widget in the control
+; dialog. The widget is a combo-box showing the options that are passed
+; as a list. The first option is the default choice.
+;
+; Usage:
+; SF-OPTION "Orientation" '("Horizontal" "Vertical")
+;
+; The value returned when the script is invoked is the number of the
+; chosen option, where the option first is counted as 0.
+;
+; ----------------------------------------------------------------------
+; SF-ENUM
+; Only useful in interactive mode. It will create a widget in the control
+; dialog. The widget is a combo-box showing all enum values for the given
+; enum type. This has to be the name of a registered enum, without the
+; "Gimp" prefix. The second parameter specifies the default value, using
+; the enum value's nick.
+;
+; Usage:
+; SF-ENUM "Interpolation" '("InterpolationType" "linear")
+;
+; The value returned when the script is invoked corresponds to chosen
+; enum value.
+;
+; ----------------------------------------------------------------------
+
+
+(define (script-fu-test-sphere radius
+                               light
+                               shadow
+                               bg-color
+                               sphere-color
+                               brush
+                               text
+                               multi-text
+                               pattern
+                               gradient
+                               gradient-reverse
+                               font
+                               size
+                               unused-palette
+                               unused-filename
+                               unused-orientation
+                               unused-interpolation
+                               unused-dirname
+                               unused-image
+                               unused-layer
+                               unused-channel
+                               unused-drawable)
+  (let* (
+        (width (* radius 3.75))
+        (height (* radius 2.5))
+        (img (car (gimp-image-new width height RGB)))
+        (drawable (car (gimp-layer-new img width height RGB-IMAGE
+                                       "Sphere Layer" 100 LAYER-MODE-NORMAL)))
+        (radians (/ (* light *pi*) 180))
+        (cx (/ width 2))
+        (cy (/ height 2))
+        (light-x (+ cx (* radius (* 0.6 (cos radians)))))
+        (light-y (- cy (* radius (* 0.6 (sin radians)))))
+        (light-end-x (+ cx (* radius (cos (+ *pi* radians)))))
+        (light-end-y (- cy (* radius (sin (+ *pi* radians)))))
+        (offset (* radius 0.1))
+        (text-extents (gimp-text-get-extents-fontname multi-text
+                                                      size PIXELS
+                                                      font))
+        (x-position (- cx (/ (car text-extents) 2)))
+        (y-position (- cy (/ (cadr text-extents) 2)))
+        (shadow-w 0)
+        (shadow-x 0)
+        )
+
+    (gimp-context-push)
+    (gimp-context-set-defaults)
+
+    (gimp-image-undo-disable img)
+    (gimp-image-insert-layer img drawable 0 0)
+    (gimp-context-set-foreground sphere-color)
+    (gimp-context-set-background bg-color)
+    (gimp-drawable-edit-fill drawable FILL-BACKGROUND)
+    (gimp-context-set-background '(20 20 20))
+
+    (if (and
+         (or (and (>= light 45) (<= light 75))
+             (and (<= light 135) (>= light 105)))
+         (= shadow TRUE))
+        (let ((shadow-w (* (* radius 2.5) (cos (+ *pi* radians))))
+              (shadow-h (* radius 0.5))
+              (shadow-x cx)
+              (shadow-y (+ cy (* radius 0.65))))
+          (if (< shadow-w 0)
+              (begin (set! shadow-x (+ cx shadow-w))
+                     (set! shadow-w (- shadow-w))))
+
+          (gimp-context-set-feather TRUE)
+          (gimp-context-set-feather-radius 7.5 7.5)
+          (gimp-image-select-ellipse img CHANNEL-OP-REPLACE shadow-x shadow-y shadow-w shadow-h)
+          (gimp-context-set-pattern pattern)
+          (gimp-drawable-edit-fill drawable FILL-PATTERN)))
+
+    (gimp-context-set-feather FALSE)
+    (gimp-image-select-ellipse img CHANNEL-OP-REPLACE (- cx radius) (- cy radius)
+                               (* 2 radius) (* 2 radius))
+
+    (gimp-context-set-gradient-fg-bg-rgb)
+    (gimp-drawable-edit-gradient-fill drawable
+				      GRADIENT-RADIAL offset
+				      FALSE 0 0
+				      TRUE
+				      light-x light-y
+				      light-end-x light-end-y)
+
+    (gimp-selection-none img)
+
+    (gimp-image-select-ellipse img CHANNEL-OP-REPLACE 10 10 50 50)
+
+    (gimp-context-set-gradient gradient)
+    (gimp-context-set-gradient-reverse gradient-reverse)
+    (gimp-drawable-edit-gradient-fill drawable
+				      GRADIENT-LINEAR offset
+				      FALSE 0 0
+				      TRUE
+				      10 10
+				      30 60)
+
+    (gimp-selection-none img)
+
+    (gimp-context-set-foreground '(0 0 0))
+    (gimp-floating-sel-anchor (car (gimp-text-fontname img drawable
+                                                       x-position y-position
+                                                       multi-text
+                                                       0 TRUE
+                                                       size PIXELS
+                                                       font)))
+
+    (gimp-image-undo-enable img)
+    (gimp-display-new img)
+
+    (gimp-context-pop)
+  )
+)
+
+(script-fu-register "script-fu-test-sphere"
+  _"_Sphere..."
+  "Simple script to test and show the usage of the new Script-Fu API extensions."
+  "Spencer Kimball, Sven Neumann"
+  "Spencer Kimball"
+  "1996, 1998"
+  ""
+  SF-ADJUSTMENT "Radius (in pixels)" (list 100 1 5000 1 10 0 SF-SPINNER)
+  SF-ADJUSTMENT "Lighting (degrees)" (list 45 0 360 1 10 1 SF-SLIDER)
+  SF-TOGGLE     "Shadow"             TRUE
+  SF-COLOR      "Background color"   "white"
+  SF-COLOR      "Sphere color"       "red"
+  SF-BRUSH      "Brush"              '("2. Hardness 100" 100 44 0)
+  SF-STRING     "Text"               "Tiny-Fu rocks!"
+  SF-TEXT       "Multi-line text"    "Hello,\nWorld!"
+  SF-PATTERN    "Pattern"            "Maple Leaves"
+  SF-GRADIENT   "Gradient"           "Deep Sea"
+  SF-TOGGLE     "Gradient reverse"   FALSE
+  SF-FONT       "Font"               "Agate"
+  SF-ADJUSTMENT "Font size (pixels)" '(50 1 1000 1 10 0 1)
+  SF-PALETTE    "Palette"            "Default"
+  SF-FILENAME   "Environment map"
+                (string-append gimp-data-directory
+                               "/scripts/images/beavis.jpg")
+  SF-OPTION     "Orientation"        '("Horizontal"
+                                       "Vertical")
+  SF-ENUM       "Interpolation"      '("InterpolationType" "linear")
+  SF-DIRNAME    "Output directory"   "/var/tmp/"
+  SF-IMAGE      "Image"              -1
+  SF-LAYER      "Layer"              -1
+  SF-CHANNEL    "Channel"            -1
+  SF-DRAWABLE   "Drawable"           -1
+  SF-VECTORS    "Vectors"            -1
+)
+
+(script-fu-menu-register "script-fu-test-sphere"
+                         "<Image>/Filters/Languages/Script-Fu/Test")
diff --git a/plug-ins/script-fu/scripts/tileblur.scm b/plug-ins/script-fu/scripts/tileblur.scm
new file mode 100644
index 0000000..4be7a6c
--- /dev/null
+++ b/plug-ins/script-fu/scripts/tileblur.scm
@@ -0,0 +1,83 @@
+; Chris Gutteridge (cjg@ecs.soton.ac.uk)
+; At ECS Dept, University of Southampton, England.
+
+; This program is free software: you can redistribute it and/or modify
+; it under the terms of the GNU General Public License as published by
+; the Free Software Foundation; either version 3 of the License, or
+; (at your option) any later version.
+;
+; This program is distributed in the hope that it will be useful,
+; but WITHOUT ANY WARRANTY; without even the implied warranty of
+; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+; GNU General Public License for more details.
+;
+; You should have received a copy of the GNU General Public License
+; along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+
+(define (script-fu-tile-blur inImage inLayer inRadius inVert inHoriz inType)
+
+  (let* (
+        (theImage inImage)
+        (theLayer inLayer)
+        (theHeight (car (gimp-drawable-height theLayer)))
+        (theWidth (car (gimp-drawable-width theLayer)))
+        )
+
+    (define (pasteat xoff yoff)
+      (let ((theFloat (car(gimp-edit-paste theLayer 0))))
+        (gimp-layer-set-offsets theFloat (* xoff theWidth) (* yoff theHeight) )
+        (gimp-floating-sel-anchor theFloat)
+       )
+    )
+
+    (gimp-context-push)
+    (gimp-context-set-feather FALSE)
+    (gimp-image-undo-group-start theImage)
+
+    (gimp-layer-resize theLayer (* 3 theWidth) (* 3 theHeight) 0 0)
+
+    (gimp-image-select-rectangle theImage CHANNEL-OP-REPLACE 0 0 theWidth theHeight)
+    (gimp-edit-cut theLayer)
+
+    (gimp-selection-none theImage)
+    (gimp-layer-set-offsets theLayer theWidth theHeight)
+
+    (pasteat 1 1) (pasteat 1 2) (pasteat 1 3)
+    (pasteat 2 1) (pasteat 2 2) (pasteat 2 3)
+    (pasteat 3 1) (pasteat 3 2) (pasteat 3 3)
+
+    (gimp-selection-none theImage)
+    (if (= inType 0)
+        (plug-in-gauss-iir RUN-NONINTERACTIVE
+                           theImage theLayer inRadius inHoriz inVert)
+        (plug-in-gauss-rle RUN-NONINTERACTIVE
+                           theImage theLayer inRadius inHoriz inVert)
+    )
+
+    (gimp-layer-resize theLayer
+                       theWidth theHeight (- 0 theWidth) (- 0 theHeight))
+    (gimp-layer-set-offsets theLayer 0 0)
+    (gimp-image-undo-group-end theImage)
+    (gimp-displays-flush)
+    (gimp-context-pop)
+  )
+)
+
+(script-fu-register "script-fu-tile-blur"
+  _"_Tileable Blur..."
+  _"Blur the edges of an image so the result tiles seamlessly"
+  "Chris Gutteridge"
+  "1998, Chris Gutteridge / ECS dept, University of Southampton, England."
+  "25th April 1998"
+  "RGB*"
+  SF-IMAGE       "The Image"         0
+  SF-DRAWABLE    "The Layer"         0
+  SF-ADJUSTMENT _"Radius"            '(5 0 128 1 1 0 0)
+  SF-TOGGLE     _"Blur vertically"   TRUE
+  SF-TOGGLE     _"Blur horizontally" TRUE
+  SF-OPTION     _"Blur type"         '(_"IIR" _"RLE")
+)
+
+(script-fu-menu-register "script-fu-tile-blur"
+                         "<Image>/Filters/Blur")
diff --git a/plug-ins/script-fu/scripts/ts-helloworld.scm b/plug-ins/script-fu/scripts/ts-helloworld.scm
new file mode 100644
index 0000000..2c04105
--- /dev/null
+++ b/plug-ins/script-fu/scripts/ts-helloworld.scm
@@ -0,0 +1,65 @@
+; "Hello, World" Test v1.00 February 29, 2004
+; by Kevin Cozens <kcozens@interlog.com>
+;
+; Creates an image with the text "Hello, World!"
+; This was the first TinyScheme based script ever created and run for the
+; 2.x version of GIMP.
+
+; GIMP - The GNU Image Manipulation Program
+; Copyright (C) 1995 Spencer Kimball and Peter Mattis
+;
+; This program is free software: you can redistribute it and/or modify
+; it under the terms of the GNU General Public License as published by
+; the Free Software Foundation; either version 3 of the License, or
+; (at your option) any later version.
+;
+; This program is distributed in the hope that it will be useful,
+; but WITHOUT ANY WARRANTY; without even the implied warranty of
+; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+; GNU General Public License for more details.
+;
+; You should have received a copy of the GNU General Public License
+; along with this program.  If not, see <https://www.gnu.org/licenses/>.
+;
+; Tiny-Fu first successfully ran this script at 2:07am on March 6, 2004.
+
+(define (script-fu-helloworld text font size color)
+  (let* (
+        (width 10)
+        (height 10)
+        (img (car (gimp-image-new width height RGB)))
+        (text-layer)
+        )
+
+    (gimp-context-push)
+
+    (gimp-image-undo-disable img)
+    (gimp-context-set-foreground color)
+
+    (set! text-layer (car (gimp-text-fontname img -1 0 0 text 10 TRUE size PIXELS font)))
+    (set! width (car (gimp-drawable-width text-layer)))
+    (set! height (car (gimp-drawable-height text-layer)))
+    (gimp-image-resize img width height 0 0)
+
+    (gimp-image-undo-enable img)
+    (gimp-display-new img)
+
+    (gimp-context-pop)
+  )
+)
+
+(script-fu-register "script-fu-helloworld"
+    "_Hello World..."
+    "Creates an image with a user specified text string."
+    "Kevin Cozens <kcozens@interlog.com>"
+    "Kevin Cozens"
+    "February 29, 2004"
+    ""
+    SF-STRING     "Text string"         "Hello, World!"
+    SF-FONT       "Font"                "Sans"
+    SF-ADJUSTMENT "Font size (pixels)"  '(100 2 1000 1 10 0 1)
+    SF-COLOR      "Color"               '(0 0 0)
+)
+
+(script-fu-menu-register "script-fu-helloworld"
+                         "<Image>/Filters/Languages/Script-Fu/Test")
diff --git a/plug-ins/script-fu/scripts/unsharp-mask.scm b/plug-ins/script-fu/scripts/unsharp-mask.scm
new file mode 100644
index 0000000..77daf82
--- /dev/null
+++ b/plug-ins/script-fu/scripts/unsharp-mask.scm
@@ -0,0 +1,84 @@
+;;; unsharp-mask.scm
+;;; Time-stamp: <1998/11/17 13:18:39 narazaki@gimp.org>
+;;; Author: Narazaki Shuji <narazaki@gimp.org>
+;;; Version 0.8
+
+(define (script-fu-unsharp-mask img drw mask-size mask-opacity)
+  (let* (
+        (drawable-width (car (gimp-drawable-width drw)))
+        (drawable-height (car (gimp-drawable-height drw)))
+        (new-image (car (gimp-image-new drawable-width drawable-height RGB)))
+        (original-layer (car (gimp-layer-new new-image
+                                             drawable-width drawable-height
+                                             RGB-IMAGE "Original"
+                                             100 LAYER-MODE-NORMAL)))
+        (original-layer-for-darker 0)
+        (original-layer-for-lighter 0)
+        (blurred-layer-for-darker 0)
+        (blurred-layer-for-lighter 0)
+        (darker-layer 0)
+        (lighter-layer 0)
+        )
+
+    (gimp-selection-all img)
+    (gimp-edit-copy drw)
+
+    (gimp-image-undo-disable new-image)
+
+    (gimp-image-insert-layer new-image original-layer 0 0)
+    (gimp-floating-sel-anchor
+      (car (gimp-edit-paste original-layer FALSE)))
+
+    (set! original-layer-for-darker (car (gimp-layer-copy original-layer TRUE)))
+    (set! original-layer-for-lighter (car (gimp-layer-copy original-layer TRUE)))
+    (set! blurred-layer-for-darker (car (gimp-layer-copy original-layer TRUE)))
+    (gimp-item-set-visible original-layer FALSE)
+    (gimp-display-new new-image)
+
+    ;; make darker mask
+    (gimp-image-insert-layer new-image blurred-layer-for-darker 0 -1)
+    (plug-in-gauss-iir RUN-NONINTERACTIVE
+		       new-image blurred-layer-for-darker mask-size TRUE TRUE)
+    (set! blurred-layer-for-lighter
+          (car (gimp-layer-copy blurred-layer-for-darker TRUE)))
+    (gimp-image-insert-layer new-image original-layer-for-darker 0 -1)
+    (gimp-layer-set-mode original-layer-for-darker LAYER-MODE-SUBTRACT)
+    (set! darker-layer
+          (car (gimp-image-merge-visible-layers new-image CLIP-TO-IMAGE)))
+    (gimp-item-set-name darker-layer "darker mask")
+    (gimp-item-set-visible darker-layer FALSE)
+
+    ;; make lighter mask
+    (gimp-image-insert-layer new-image original-layer-for-lighter 0 -1)
+    (gimp-image-insert-layer new-image blurred-layer-for-lighter 0 -1)
+    (gimp-layer-set-mode blurred-layer-for-lighter LAYER-MODE-SUBTRACT)
+    (set! lighter-layer
+          (car (gimp-image-merge-visible-layers new-image CLIP-TO-IMAGE)))
+    (gimp-item-set-name lighter-layer "lighter mask")
+
+    ;; combine them
+    (gimp-item-set-visible original-layer TRUE)
+    (gimp-layer-set-mode darker-layer LAYER-MODE-SUBTRACT)
+    (gimp-layer-set-opacity darker-layer mask-opacity)
+    (gimp-item-set-visible darker-layer TRUE)
+    (gimp-layer-set-mode lighter-layer LAYER-MODE-ADDITION)
+    (gimp-layer-set-opacity lighter-layer mask-opacity)
+    (gimp-item-set-visible lighter-layer TRUE)
+
+    (gimp-image-undo-enable new-image)
+    (gimp-displays-flush)
+  )
+)
+
+(script-fu-register "script-fu-unsharp-mask"
+  "Unsharp Mask..."
+  "Make a new image from the current layer by applying the unsharp mask method"
+  "Shuji Narazaki <narazaki@gimp.org>"
+  "Shuji Narazaki"
+  "1997,1998"
+  ""
+  SF-IMAGE      "Image"             0
+  SF-DRAWABLE   "Drawable to apply" 0
+  SF-ADJUSTMENT _"Mask size"        '(5 1 100 1 1 0 1)
+  SF-ADJUSTMENT _"Mask opacity"     '(50 0 100 1 1 0 1)
+)
diff --git a/plug-ins/script-fu/scripts/waves-anim.scm b/plug-ins/script-fu/scripts/waves-anim.scm
new file mode 100644
index 0000000..4e43d98
--- /dev/null
+++ b/plug-ins/script-fu/scripts/waves-anim.scm
@@ -0,0 +1,110 @@
+; GIMP - The GNU Image Manipulation Program
+; Copyright (C) 1995 Spencer Kimball and Peter Mattis
+;
+; This program is free software: you can redistribute it and/or modify
+; it under the terms of the GNU General Public License as published by
+; the Free Software Foundation; either version 3 of the License, or
+; (at your option) any later version.
+;
+; This program is distributed in the hope that it will be useful,
+; but WITHOUT ANY WARRANTY; without even the implied warranty of
+; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+; GNU General Public License for more details.
+;
+; You should have received a copy of the GNU General Public License
+; along with this program.  If not, see <https://www.gnu.org/licenses/>.
+;
+;
+; waves-anim.scm   version 1.01   1997/12/13
+;
+; CHANGE-LOG:
+; 1.00 - initial release
+; 1.01 - some code cleanup, no real changes
+;
+; Copyright (C) 1997 Sven Neumann <sven@gimp.org>
+;
+;
+; Makes a copy of your image and creates an animation of the active layer
+; as if a stone was thrown into the image. The animation may be saved with
+; the gif-plug-in.
+
+(define (script-fu-waves-anim img
+                              drawable
+                              amplitude
+                              wavelength
+                              num-frames
+                              invert)
+  (let* ((amplitude (max 0 amplitude))
+         (wavelength (max 0 wavelength))
+         (num-frames (max 1 num-frames))
+         (remaining-frames num-frames)
+         (phase 0)
+         (phaseshift (/ 360 num-frames))
+         (image (car (gimp-image-duplicate img)))
+         (source-layer (car (gimp-image-get-active-layer image))))
+
+  (gimp-image-undo-disable image)
+
+  (if (= invert TRUE)
+      (set! phaseshift (- 0 phaseshift)))
+
+  (while (> remaining-frames 1)
+    (let* (
+          (waves-layer (car (gimp-layer-copy source-layer TRUE)))
+          (layer-name (string-append "Frame "
+                                     (number->string
+                                       (- (+ num-frames 2)
+                                          remaining-frames) 10
+                                       )
+                                     " (replace)"))
+          )
+    (gimp-layer-set-lock-alpha waves-layer FALSE)
+    (gimp-image-insert-layer image waves-layer 0 -1)
+    (gimp-item-set-name waves-layer layer-name)
+
+    (plug-in-waves RUN-NONINTERACTIVE
+                   image
+                   waves-layer
+                   amplitude
+                   phase
+                   wavelength
+                   0
+                   FALSE)
+
+    (set! remaining-frames (- remaining-frames 1))
+    (set! phase (- phase phaseshift))
+    )
+  )
+
+  (gimp-item-set-name source-layer "Frame 1")
+  (plug-in-waves RUN-NONINTERACTIVE
+                 image
+                 source-layer
+                 amplitude
+                 phase
+                 wavelength
+                 0
+                 FALSE)
+
+  (gimp-image-undo-enable image)
+  (gimp-display-new image)
+  )
+)
+
+(script-fu-register "script-fu-waves-anim"
+  _"_Waves..."
+  _"Create a multi-layer image with an effect like a stone was thrown into the current image"
+  "Sven Neumann <sven@gimp.org>"
+  "Sven Neumann"
+  "1997/13/12"
+  "RGB* GRAY*"
+  SF-IMAGE       "Image" 0
+  SF-DRAWABLE    "Drawable" 0
+  SF-ADJUSTMENT _"Amplitude"        '(10 1   101 1 10 1 0)
+  SF-ADJUSTMENT _"Wavelength"       '(10 0.1 100 1 10 1 0)
+  SF-ADJUSTMENT _"Number of frames" '(6  1   512 1 10 0 1)
+  SF-TOGGLE     _"Invert direction" FALSE
+)
+
+(script-fu-menu-register "script-fu-waves-anim"
+                         "<Image>/Filters/Animation/Animators")
diff --git a/plug-ins/script-fu/scripts/weave.scm b/plug-ins/script-fu/scripts/weave.scm
new file mode 100644
index 0000000..81fd0a7
--- /dev/null
+++ b/plug-ins/script-fu/scripts/weave.scm
@@ -0,0 +1,415 @@
+; GIMP - The GNU Image Manipulation Program
+; Copyright (C) 1995 Spencer Kimball and Peter Mattis
+;
+; Weave script --- make an image look as if it were woven
+; Copyright (C) 1997 Federico Mena Quintero
+; federico@nuclecu.unam.mx
+;
+; This program is free software: you can redistribute it and/or modify
+; it under the terms of the GNU General Public License as published by
+; the Free Software Foundation; either version 3 of the License, or
+; (at your option) any later version.
+;
+; This program is distributed in the hope that it will be useful,
+; but WITHOUT ANY WARRANTY; without even the implied warranty of
+; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+; GNU General Public License for more details.
+;
+; You should have received a copy of the GNU General Public License
+; along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+
+; Copies the specified rectangle from/to the specified drawable
+
+(define (copy-rectangle img
+                        drawable
+                        x1
+                        y1
+                        width
+                        height
+                        dest-x
+                        dest-y)
+  (gimp-image-select-rectangle img CHANNEL-OP-REPLACE x1 y1 width height)
+  (gimp-edit-copy drawable)
+  (let ((floating-sel (car (gimp-edit-paste drawable FALSE))))
+    (gimp-layer-set-offsets floating-sel dest-x dest-y)
+    (gimp-floating-sel-anchor floating-sel))
+  (gimp-selection-none img))
+
+; Creates a single weaving tile
+
+(define (create-weave-tile ribbon-width
+                           ribbon-spacing
+                           shadow-darkness
+                           shadow-depth)
+  (let* ((tile-size (+ (* 2 ribbon-width) (* 2 ribbon-spacing)))
+         (darkness (* 255 (/ (- 100 shadow-darkness) 100)))
+         (img (car (gimp-image-new tile-size tile-size RGB)))
+         (drawable (car (gimp-layer-new img tile-size tile-size RGB-IMAGE
+                                        "Weave tile" 100 LAYER-MODE-NORMAL))))
+
+    (gimp-image-undo-disable img)
+    (gimp-image-insert-layer img drawable 0 0)
+
+    (gimp-context-set-background '(0 0 0))
+    (gimp-drawable-edit-fill drawable FILL-BACKGROUND)
+
+    ; Create main horizontal ribbon
+
+    (gimp-context-set-foreground '(255 255 255))
+    (gimp-context-set-background (list darkness darkness darkness))
+
+    (gimp-image-select-rectangle img
+                                 CHANNEL-OP-REPLACE
+                                 0
+                                 ribbon-spacing
+                                 (+ (* 2 ribbon-spacing) ribbon-width)
+                                 ribbon-width)
+
+    (gimp-context-set-gradient-fg-bg-rgb)
+    (gimp-drawable-edit-gradient-fill drawable
+				      GRADIENT-BILINEAR (- 100 shadow-depth)
+				      FALSE 0 0
+				      TRUE
+				      (/ (+ (* 2 ribbon-spacing) ribbon-width -1) 2) 0
+				      0 0)
+
+    ; Create main vertical ribbon
+
+    (gimp-image-select-rectangle img
+                                 CHANNEL-OP-REPLACE
+                                 (+ (* 2 ribbon-spacing) ribbon-width)
+                                 0
+                                 ribbon-width
+                                 (+ (* 2 ribbon-spacing) ribbon-width))
+
+    (gimp-drawable-edit-gradient-fill drawable
+				      GRADIENT-BILINEAR (- 100 shadow-depth)
+				      FALSE 0 0
+				      TRUE
+				      0 (/ (+ (* 2 ribbon-spacing) ribbon-width -1) 2)
+				      0 0)
+
+    ; Create the secondary horizontal ribbon
+
+    (copy-rectangle img
+                    drawable
+                    0
+                    ribbon-spacing
+                    (+ ribbon-width ribbon-spacing)
+                    ribbon-width
+                    (+ ribbon-width ribbon-spacing)
+                    (+ (* 2 ribbon-spacing) ribbon-width))
+
+    (copy-rectangle img
+                    drawable
+                    (+ ribbon-width ribbon-spacing)
+                    ribbon-spacing
+                    ribbon-spacing
+                    ribbon-width
+                    0
+                    (+ (* 2 ribbon-spacing) ribbon-width))
+
+    ; Create the secondary vertical ribbon
+
+    (copy-rectangle img
+                    drawable
+                    (+ (* 2 ribbon-spacing) ribbon-width)
+                    0
+                    ribbon-width
+                    (+ ribbon-width ribbon-spacing)
+                    ribbon-spacing
+                    (+ ribbon-width ribbon-spacing))
+
+    (copy-rectangle img
+                    drawable
+                    (+ (* 2 ribbon-spacing) ribbon-width)
+                    (+ ribbon-width ribbon-spacing)
+                    ribbon-width
+                    ribbon-spacing
+                    ribbon-spacing
+                    0)
+
+    ; Done
+
+    (gimp-image-undo-enable img)
+    (list img drawable)))
+
+; Creates a complete weaving mask
+
+(define (create-weave width
+                      height
+                      ribbon-width
+                      ribbon-spacing
+                      shadow-darkness
+                      shadow-depth)
+  (let* ((tile (create-weave-tile ribbon-width ribbon-spacing shadow-darkness
+                                  shadow-depth))
+         (tile-img (car tile))
+         (tile-layer (cadr tile))
+          (weaving (plug-in-tile RUN-NONINTERACTIVE tile-img tile-layer width height TRUE)))
+    (gimp-image-delete tile-img)
+    weaving))
+
+; Creates a single tile for masking
+
+(define (create-mask-tile ribbon-width
+                          ribbon-spacing
+                          r1-x1
+                          r1-y1
+                          r1-width
+                          r1-height
+                          r2-x1
+                          r2-y1
+                          r2-width
+                          r2-height
+                          r3-x1
+                          r3-y1
+                          r3-width
+                          r3-height)
+  (let* ((tile-size (+ (* 2 ribbon-width) (* 2 ribbon-spacing)))
+         (img (car (gimp-image-new tile-size tile-size RGB)))
+         (drawable (car (gimp-layer-new img tile-size tile-size RGB-IMAGE
+                                        "Mask" 100 LAYER-MODE-NORMAL))))
+    (gimp-image-undo-disable img)
+    (gimp-image-insert-layer img drawable 0 0)
+
+    (gimp-context-set-background '(0 0 0))
+    (gimp-drawable-edit-fill drawable FILL-BACKGROUND)
+
+    (gimp-image-select-rectangle img CHANNEL-OP-REPLACE r1-x1 r1-y1 r1-width r1-height)
+    (gimp-image-select-rectangle img CHANNEL-OP-ADD r2-x1 r2-y1 r2-width r2-height)
+    (gimp-image-select-rectangle img CHANNEL-OP-ADD r3-x1 r3-y1 r3-width r3-height)
+
+    (gimp-context-set-background '(255 255 255))
+    (gimp-drawable-edit-fill drawable FILL-BACKGROUND)
+    (gimp-selection-none img)
+
+    (gimp-image-undo-enable img)
+
+    (list img drawable)))
+
+; Creates a complete mask image
+
+(define (create-mask final-width
+                     final-height
+                     ribbon-width
+                     ribbon-spacing
+                     r1-x1
+                     r1-y1
+                     r1-width
+                     r1-height
+                     r2-x1
+                     r2-y1
+                     r2-width
+                     r2-height
+                     r3-x1
+                     r3-y1
+                     r3-width
+                     r3-height)
+  (let* ((tile (create-mask-tile ribbon-width ribbon-spacing
+                                 r1-x1 r1-y1 r1-width r1-height
+                                 r2-x1 r2-y1 r2-width r2-height
+                                 r3-x1 r3-y1 r3-width r3-height))
+         (tile-img (car tile))
+         (tile-layer (cadr tile))
+         (mask (plug-in-tile RUN-NONINTERACTIVE tile-img tile-layer final-width final-height
+                             TRUE)))
+    (gimp-image-delete tile-img)
+    mask))
+
+; Creates the mask for horizontal ribbons
+
+(define (create-horizontal-mask ribbon-width
+                                ribbon-spacing
+                                final-width
+                                final-height)
+  (create-mask final-width
+               final-height
+               ribbon-width
+               ribbon-spacing
+               0
+               ribbon-spacing
+               (+ (* 2 ribbon-spacing) ribbon-width)
+               ribbon-width
+               0
+               (+ (* 2 ribbon-spacing) ribbon-width)
+               ribbon-spacing
+               ribbon-width
+               (+ ribbon-width ribbon-spacing)
+               (+ (* 2 ribbon-spacing) ribbon-width)
+               (+ ribbon-width ribbon-spacing)
+               ribbon-width))
+
+; Creates the mask for vertical ribbons
+
+(define (create-vertical-mask ribbon-width
+                              ribbon-spacing
+                              final-width
+                              final-height)
+  (create-mask final-width
+               final-height
+               ribbon-width
+               ribbon-spacing
+               (+ (* 2 ribbon-spacing) ribbon-width)
+               0
+               ribbon-width
+               (+ (* 2 ribbon-spacing) ribbon-width)
+               ribbon-spacing
+               0
+               ribbon-width
+               ribbon-spacing
+               ribbon-spacing
+               (+ ribbon-width ribbon-spacing)
+               ribbon-width
+               (+ ribbon-width ribbon-spacing)))
+
+; Adds a threads layer at a certain orientation to the specified image
+
+(define (create-threads-layer img
+                              width
+                              height
+                              length
+                              density
+                              orientation)
+  (let* ((drawable (car (gimp-layer-new img width height RGBA-IMAGE
+                                        "Threads" 100 LAYER-MODE-NORMAL)))
+         (dense (/ density 100.0)))
+    (gimp-image-insert-layer img drawable 0 -1)
+    (gimp-context-set-background '(255 255 255))
+    (gimp-drawable-edit-fill drawable FILL-BACKGROUND)
+    (plug-in-noisify RUN-NONINTERACTIVE img drawable FALSE dense dense dense dense)
+    (plug-in-c-astretch RUN-NONINTERACTIVE img drawable)
+    (cond ((eq? orientation 'horizontal)
+           (plug-in-gauss-rle RUN-NONINTERACTIVE img drawable length TRUE FALSE))
+          ((eq? orientation 'vertical)
+           (plug-in-gauss-rle RUN-NONINTERACTIVE img drawable length FALSE TRUE)))
+    (plug-in-c-astretch RUN-NONINTERACTIVE img drawable)
+    drawable))
+
+(define (create-complete-weave width
+                               height
+                               ribbon-width
+                               ribbon-spacing
+                               shadow-darkness
+                               shadow-depth
+                               thread-length
+                               thread-density
+                               thread-intensity)
+  (let* ((weave (create-weave width height ribbon-width ribbon-spacing
+                              shadow-darkness shadow-depth))
+         (w-img (car weave))
+         (w-layer (cadr weave))
+
+         (h-layer (create-threads-layer w-img width height thread-length
+                                        thread-density 'horizontal))
+         (h-mask (car (gimp-layer-create-mask h-layer ADD-MASK-WHITE)))
+
+         (v-layer (create-threads-layer w-img width height thread-length
+                                        thread-density 'vertical))
+         (v-mask (car (gimp-layer-create-mask v-layer ADD-MASK-WHITE)))
+
+         (hmask (create-horizontal-mask ribbon-width ribbon-spacing
+                                        width height))
+         (hm-img (car hmask))
+         (hm-layer (cadr hmask))
+
+         (vmask (create-vertical-mask ribbon-width ribbon-spacing width height))
+         (vm-img (car vmask))
+         (vm-layer (cadr vmask)))
+
+    (gimp-layer-add-mask h-layer h-mask)
+    (gimp-selection-all hm-img)
+    (gimp-edit-copy hm-layer)
+    (gimp-image-delete hm-img)
+    (gimp-floating-sel-anchor (car (gimp-edit-paste h-mask FALSE)))
+    (gimp-layer-set-opacity h-layer thread-intensity)
+    (gimp-layer-set-mode h-layer LAYER-MODE-MULTIPLY)
+
+    (gimp-layer-add-mask v-layer v-mask)
+    (gimp-selection-all vm-img)
+    (gimp-edit-copy vm-layer)
+    (gimp-image-delete vm-img)
+    (gimp-floating-sel-anchor (car (gimp-edit-paste v-mask FALSE)))
+    (gimp-layer-set-opacity v-layer thread-intensity)
+    (gimp-layer-set-mode v-layer LAYER-MODE-MULTIPLY)
+
+    ; Uncomment this if you want to keep the weaving mask image
+    ; (gimp-display-new (car (gimp-image-duplicate w-img)))
+
+    (list w-img
+          (car (gimp-image-flatten w-img)))))
+
+; The main weave function
+
+(define (script-fu-weave img
+                         drawable
+                         ribbon-width
+                         ribbon-spacing
+                         shadow-darkness
+                         shadow-depth
+                         thread-length
+                         thread-density
+                         thread-intensity)
+  (gimp-context-push)
+  (gimp-image-undo-group-start img)
+
+  (let* (
+        (d-img (car (gimp-item-get-image drawable)))
+        (d-width (car (gimp-drawable-width drawable)))
+        (d-height (car (gimp-drawable-height drawable)))
+        (d-offsets (gimp-drawable-offsets drawable))
+
+        (weaving (create-complete-weave d-width
+                                        d-height
+                                        ribbon-width
+                                        ribbon-spacing
+                                        shadow-darkness
+                                        shadow-depth
+                                        thread-length
+                                        thread-density
+                                        thread-intensity))
+        (w-img (car weaving))
+        (w-layer (cadr weaving))
+        )
+
+    (gimp-context-set-paint-mode LAYER-MODE-NORMAL)
+    (gimp-context-set-opacity 100.0)
+    (gimp-context-set-feather FALSE)
+
+    (gimp-selection-all w-img)
+    (gimp-edit-copy w-layer)
+    (gimp-image-delete w-img)
+    (let ((floating-sel (car (gimp-edit-paste drawable FALSE))))
+      (gimp-layer-set-offsets floating-sel
+                              (car d-offsets)
+                              (cadr d-offsets))
+      (gimp-layer-set-mode floating-sel LAYER-MODE-MULTIPLY)
+      (gimp-floating-sel-to-layer floating-sel)
+    )
+  )
+  (gimp-context-pop)
+  (gimp-image-undo-group-end img)
+  (gimp-displays-flush)
+)
+
+(script-fu-register "script-fu-weave"
+  _"_Weave..."
+  _"Create a new layer filled with a weave effect to be used as an overlay or bump map"
+  "Federico Mena Quintero"
+  "Federico Mena Quintero"
+  "June 1997"
+  "RGB* GRAY*"
+  SF-IMAGE       "Image to Weave"    0
+  SF-DRAWABLE    "Drawable to Weave" 0
+  SF-ADJUSTMENT _"Ribbon width"     '(30  0 256 1 10 1 1)
+  SF-ADJUSTMENT _"Ribbon spacing"   '(10  0 256 1 10 1 1)
+  SF-ADJUSTMENT _"Shadow darkness"  '(75  0 100 1 10 1 1)
+  SF-ADJUSTMENT _"Shadow depth"     '(75  0 100 1 10 1 1)
+  SF-ADJUSTMENT _"Thread length"    '(200 0 256 1 10 1 1)
+  SF-ADJUSTMENT _"Thread density"   '(50  0 100 1 10 1 1)
+  SF-ADJUSTMENT _"Thread intensity" '(100 0 100 1 10 1 1)
+)
+
+(script-fu-menu-register "script-fu-weave"
+                         "<Image>/Filters/Artistic")
diff --git a/plug-ins/script-fu/scripts/xach-effect.scm b/plug-ins/script-fu/scripts/xach-effect.scm
new file mode 100644
index 0000000..ae83885
--- /dev/null
+++ b/plug-ins/script-fu/scripts/xach-effect.scm
@@ -0,0 +1,142 @@
+; GIMP - The GNU Image Manipulation Program
+; Copyright (C) 1995 Spencer Kimball and Peter Mattis
+;
+; xach effect script
+; Copyright (c) 1997 Adrian Likins
+; aklikins@eos.ncsu.edu
+;
+; based on a idea by Xach Beane <xach@mint.net>
+;
+;
+; This program is free software: you can redistribute it and/or modify
+; it under the terms of the GNU General Public License as published by
+; the Free Software Foundation; either version 3 of the License, or
+; (at your option) any later version.
+;
+; This program is distributed in the hope that it will be useful,
+; but WITHOUT ANY WARRANTY; without even the implied warranty of
+; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+; GNU General Public License for more details.
+;
+; You should have received a copy of the GNU General Public License
+; along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+
+(define (script-fu-xach-effect image
+                               drawable
+                               hl-offset-x
+                               hl-offset-y
+                               hl-color
+                               hl-opacity-comp
+                               ds-color
+                               ds-opacity
+                               ds-blur
+                               ds-offset-x
+                               ds-offset-y
+                               keep-selection)
+  (let* (
+        (ds-blur (max ds-blur 0))
+        (ds-opacity (min ds-opacity 100))
+        (ds-opacity (max ds-opacity 0))
+        (type (car (gimp-drawable-type-with-alpha drawable)))
+        (image-width (car (gimp-image-width image)))
+        (hl-opacity (list hl-opacity-comp hl-opacity-comp hl-opacity-comp))
+        (image-height (car (gimp-image-height image)))
+        (active-selection 0)
+        (from-selection 0)
+        (theLayer 0)
+        (hl-layer 0)
+        (shadow-layer 0)
+        (mask 0)
+        )
+
+    (gimp-context-push)
+    (gimp-context-set-defaults)
+
+    (gimp-image-undo-group-start image)
+    (gimp-layer-add-alpha drawable)
+
+    (if (= (car (gimp-selection-is-empty image)) TRUE)
+        (begin
+          (gimp-image-select-item image CHANNEL-OP-REPLACE drawable)
+          (set! active-selection (car (gimp-selection-save image)))
+          (set! from-selection FALSE))
+        (begin
+          (set! from-selection TRUE)
+          (set! active-selection (car (gimp-selection-save image)))))
+
+    (set! hl-layer (car (gimp-layer-new image image-width image-height type _"Highlight" 100 LAYER-MODE-NORMAL)))
+    (gimp-image-insert-layer image hl-layer 0 -1)
+
+    (gimp-selection-none image)
+    (gimp-drawable-edit-clear hl-layer)
+    (gimp-image-select-item image CHANNEL-OP-REPLACE active-selection)
+
+    (gimp-context-set-background hl-color)
+    (gimp-drawable-edit-fill hl-layer FILL-BACKGROUND)
+    (gimp-selection-translate image hl-offset-x hl-offset-y)
+    (gimp-drawable-edit-fill hl-layer FILL-BACKGROUND)
+    (gimp-selection-none image)
+    (gimp-image-select-item image CHANNEL-OP-REPLACE active-selection)
+
+    (set! mask (car (gimp-layer-create-mask hl-layer ADD-MASK-WHITE)))
+    (gimp-layer-add-mask hl-layer mask)
+
+    (gimp-context-set-background hl-opacity)
+    (gimp-drawable-edit-fill mask FILL-BACKGROUND)
+
+    (set! shadow-layer (car (gimp-layer-new image
+                                            image-width
+                                            image-height
+                                            type
+                                            _"Shadow"
+                                            ds-opacity
+                                            LAYER-MODE-NORMAL)))
+    (gimp-image-insert-layer image shadow-layer 0 -1)
+    (gimp-selection-none image)
+    (gimp-drawable-edit-clear shadow-layer)
+    (gimp-image-select-item image CHANNEL-OP-REPLACE active-selection)
+    (gimp-selection-translate image ds-offset-x ds-offset-y)
+    (gimp-context-set-background ds-color)
+    (gimp-drawable-edit-fill shadow-layer FILL-BACKGROUND)
+    (gimp-selection-none image)
+    (plug-in-gauss-rle RUN-NONINTERACTIVE image shadow-layer ds-blur TRUE TRUE)
+    (gimp-image-select-item image CHANNEL-OP-REPLACE active-selection)
+    (gimp-drawable-edit-clear shadow-layer)
+    (gimp-image-lower-item image shadow-layer)
+
+    (if (= keep-selection FALSE)
+        (gimp-selection-none image))
+
+    (gimp-image-set-active-layer image drawable)
+    (gimp-image-remove-channel image active-selection)
+    (gimp-image-undo-group-end image)
+    (gimp-displays-flush)
+
+    (gimp-context-pop)
+  )
+)
+
+(script-fu-register "script-fu-xach-effect"
+  _"_Xach-Effect..."
+  _"Add a subtle translucent 3D effect to the selected region (or alpha)"
+  "Adrian Likins <adrian@gimp.org>"
+  "Adrian Likins"
+  "9/28/97"
+  "RGB* GRAY*"
+  SF-IMAGE       "Image"                   0
+  SF-DRAWABLE    "Drawable"                0
+  SF-ADJUSTMENT _"Highlight X offset"      '(-1 -100 100 1 10 0 1)
+  SF-ADJUSTMENT _"Highlight Y offset"      '(-1 -100 100 1 10 0 1)
+  SF-COLOR      _"Highlight color"         "white"
+  SF-ADJUSTMENT _"Highlight opacity"       '(66 0 255 1 10 0 0)
+  SF-COLOR      _"Drop shadow color"       "black"
+  SF-ADJUSTMENT _"Drop shadow opacity"     '(100 0 100 1 10 0 0)
+  SF-ADJUSTMENT _"Drop shadow blur radius" '(12 0 255 1 10 0 1)
+  SF-ADJUSTMENT _"Drop shadow X offset"    '(5 0 255 1 10 0 1)
+  SF-ADJUSTMENT _"Drop shadow Y offset"    '(5 0 255 1 10 0 1)
+  SF-TOGGLE     _"Keep selection"          TRUE
+)
+
+(script-fu-menu-register "script-fu-xach-effect"
+                         "<Image>/Filters/Light and Shadow/Shadow")
diff --git a/plug-ins/script-fu/tinyscheme/BUILDING b/plug-ins/script-fu/tinyscheme/BUILDING
new file mode 100644
index 0000000..5c00236
--- /dev/null
+++ b/plug-ins/script-fu/tinyscheme/BUILDING
@@ -0,0 +1,139 @@
+        Building TinyScheme
+        -------------------
+
+The included makefile includes logic for Linux, Solaris and Win32, and can
+readily serve as an example for other OSes, especially Unixes. There are
+a lot of compile-time flags in TinyScheme (preprocessor defines) that can trim
+unwanted features. See next section. 'make all' and 'make clean' function as
+expected.
+
+Autoconfing TinyScheme was once proposed, but the distribution would not be
+so small anymore. There are few platform dependencies in TinyScheme, and in
+general compiles out of the box.
+
+     Customizing
+     -----------
+
+     The following symbols are defined to default values in scheme.h.
+     Use the -D flag of cc to set to either 1 or 0.
+
+     STANDALONE
+     Define this to produce a standalone interpreter.
+
+     USE_MATH
+     Includes math routines.
+
+     USE_CHAR_CLASSIFIERS
+     Includes character classifier procedures.
+
+     USE_ASCII_NAMES
+     Enable extended character notation based on ASCII names.
+
+     USE_STRING_PORTS
+     Enables string ports.
+
+     USE_ERROR_HOOK
+     To force system errors through user-defined error handling.
+     (see "Error handling")
+
+     USE_TRACING
+     To enable use of TRACING.
+
+     USE_COLON_HOOK
+     Enable use of qualified identifiers. (see "Colon Qualifiers - Packages")
+     Defining this as 0 has the rather drastic consequence that any code using
+     packages will stop working, and will have to be modified. It should only
+     be used if you *absolutely* need to use '::' in identifiers.
+
+     USE_STRCASECMP
+     Defines stricmp as strcasecmp, for Unix.
+
+     STDIO_ADDS_CR
+     Informs TinyScheme that stdio translates "\n" to "\r\n". For DOS/Windows.
+
+     USE_DL
+     Enables dynamically loaded routines. If you define this symbol, you
+     should also include dynload.c in your compile.
+
+     USE_PLIST
+     Enables property lists (not Standard Scheme stuff). Off by default.
+     
+     USE_NO_FEATURES
+     Shortcut to disable USE_MATH, USE_CHAR_CLASSIFIERS, USE_ASCII_NAMES,
+     USE_STRING_PORTS, USE_ERROR_HOOK, USE_TRACING, USE_COLON_HOOK,
+     USE_DL.
+
+     USE_SCHEME_STACK
+     Enables 'cons' stack (the alternative is a faster calling scheme, which 
+     breaks continuations). Undefine it if you don't care about strict compatibility
+     but you do care about faster execution.
+
+
+     OS-X tip
+     --------
+     I don't have access to OS-X, but Brian Maher submitted the following tip:
+
+[1] Download and install fink (I installed fink in
+/usr/local/fink)
+[2] Install the 'dlcompat' package using fink as such:
+> fink install dlcompat
+[3] Make the following changes to the
+tinyscheme-1.32.tar.gz
+
+diff -r tinyscheme-1.32/dynload.c
+tinyscheme-1.32-new/dynload.c
+24c24
+< #define SUN_DL
+---
+> 
+Only in tinyscheme-1.32-new/: dynload.o
+Only in tinyscheme-1.32-new/: libtinyscheme.a Only in tinyscheme-1.32-new/: libtinyscheme.so diff -r tinyscheme-1.32/makefile tinyscheme-1.32-new/makefile
+33,34c33,43
+< LD = gcc
+< LDFLAGS = -shared
+---
+> #LD = gcc
+> #LDFLAGS = -shared
+> #DEBUG=-g -Wno-char-subscripts -O
+> #SYS_LIBS= -ldl
+> #PLATFORM_FEATURES= -DSUN_DL=1
+> 
+> # Mac OS X
+> CC = gcc
+> CFLAGS = -I/usr/local/fink/include
+> LD = gcc
+> LDFLAGS = -L/usr/local/fink/lib
+37c46
+< PLATFORM_FEATURES= -DSUN_DL=1
+---
+> PLATFORM_FEATURES= -DSUN_DL=1 -DOSX
+60c69
+<       $(CC) -I. -c $(DEBUG) $(FEATURES)
+$(DL_FLAGS) $<
+---
+>       $(CC) $(CFLAGS) -I. -c $(DEBUG)
+$(FEATURES) $(DL_FLAGS) $<
+66c75
+<       $(CC) -o $@ $(DEBUG) $(OBJS) $(SYS_LIBS) 
+---
+>       $(CC) $(LDFLAGS) -o $@ $(DEBUG) $(OBJS)
+$(SYS_LIBS)
+Only in tinyscheme-1.32-new/: scheme
+diff -r tinyscheme-1.32/scheme.c
+tinyscheme-1.32-new/scheme.c
+60,61c60,61
+< #ifndef macintosh
+< # include <malloc.h>
+---
+> #ifdef OSX
+> /* Do nothing */
+62a63,65
+> # ifndef macintosh
+> #  include <malloc.h>
+> # else
+77c80,81
+< #endif /* macintosh */
+---
+> # endif /* macintosh */
+> #endif /* !OSX */
+Only in tinyscheme-1.32-new/: scheme.o
diff --git a/plug-ins/script-fu/tinyscheme/CHANGES b/plug-ins/script-fu/tinyscheme/CHANGES
new file mode 100644
index 0000000..2f7a33a
--- /dev/null
+++ b/plug-ins/script-fu/tinyscheme/CHANGES
@@ -0,0 +1,326 @@
+Change Log
+----------
+
+Version 1.41
+    Bugs fixed:
+        #3020389 - Added makefile section for Mac OS X  (SL)
+        #3286135 - Fixed num_mod routine which caused errors in use of modulo
+        #3290232 - Corrected version number shown on startup  (GM)
+        #3394882 - Added missing #if in opdefines.h around get and put  (DC)
+        #3395547 - Fix for the modulo procedure  (DC)
+        #3400290 - Optimized append to make it an O(n) operation  (DC)
+        #3493926 - Corrected flag used when building shared files on OSX (J)
+
+    R5RS related changes:
+        #2866196 - Parser does not handle delimiters correctly
+        #3395548 - Add a decimal point to inexact numbers in atom2str  (DC)
+        #3399331 - Make min/max return inexact when any argument is inexact
+        #3399332 - Compatibility fix for expt.
+        #3399335 - Optional radix for string->number and number->string  (DC)
+        #3400202 - Append with one argument should not return a list  (DC)
+        #3400284 - Compatibility fix for integer?
+
+    Other changes:
+        - Added flags to makefile for MinGW/MSYS (TC)
+        - Moved variable declarations to avoid warnings with some compilers
+        - Don't print space after initial #( when printing vectors.
+        - Minor optimization for is_nonneg().
+        - No need to round integers in OP_ROUND (#3400284)
+        - Fixes to code that reports line number with error  (RC)
+
+    Contributors:
+        Kevin Cozens, Gordon McNutt, Doug Currie, Sean Long, Tim Cas, Joey,
+        and Richard Copley, and CMarinier.
+
+Version 1.40
+    Bugs fixed:
+        #1964950 - Stop core dumps due to bad syntax in LET (and variants)
+        #2826594 - allow reverse to work on empty list (Tony Garnock-Jones)
+        Potential problem of arglist to foreign calls being wrongly GC'ed.
+        Fixed bug that read could loop forever (tehom).
+
+    API changes:
+        Exposed is_list and list_length.
+        Added scheme_register_foreign_func_list and declarations for it (tehom)
+        Defined *compile-hook* (tehom)
+
+    Other changes:
+        Updated is_list and list_length to handle circular lists.
+        Nested calling thru C has been made now safer (tehom)
+        Peter Michaux cleaned up port_rep_from_file
+        Added unwind-protect (tehom)
+        Some cleanups to in/outport and Eval_Cycle by Peter Michaux
+        Report error line number (Mostly by Sanel Zukan, back-compatibility by Tehom)
+
+    Contributors:
+        Kevin Cozens, Dimitrios Souflis, Tom Breton, Peter Michaux, Sanel Zukan,
+        and Tony Garnock-Jones.
+
+Version 1.39
+    Bugs fixed:
+        Fix for the load bug
+        Fixed parsing of octal coded characters. Fixes bug #1818018.
+        Added tests for when mk_vector is out of memory. Can't rely on sc->sink.
+        Fix for bug #1794369
+        Finished feature-request 1599947: scheme_apply0 etc return values.
+        Partly provided feature-request 1599947: Expose list_length, eqv, etc
+        Provided feature-request 1599945, Scheme->C->Scheme calling.
+        Fix for bug 1593861 (behavior of is_integer)
+        Fix for bug 1589711
+        Error checking of binding spec syntax in LET and LETREC. The bad syntax
+        was causing a segmentation fault in Linux. Complete fixes for bug #1817986.
+        Error checking of binding spec syntax in LET*
+        Bad syntax was causing core dump in Linux.
+        Fix for nasty gc bug
+
+    R5RS changes:
+        R5RS requires numbers to be of equal value AND of the same type (ie. both
+        exact or inexact) in order to return #t from eqv?. R5RS compliance fix.
+        String output ports now conform to SRFI-6
+
+    Other changes:
+        Drew Yao fixed buffer overflow problems in mk_sharp_const.
+        put OP_T0LVL in charge of reacting to EOF
+        file_push checks array bounds (patch from Ray Lehtiniemi)
+        Changed to always use snprintf (Patch due to Ramiro bsd1628)
+        Updated usage information using text from the Manual.txt file.
+
+Version 1.38
+    Interim release until the rewrite, mostly incorporating modifications
+    from Kevin Cozens. Small addition for Cygwin in the makefile, and
+    modifications by Andrew Guenther for Apple platforms.
+
+Version 1.37
+    Joe Buehler submitted reserve_cells.
+
+Version 1.36
+    Joe Buehler fixed a patch in the allocator.
+    Alexander Shendi moved the comment handling in the scanner, which
+    fixed an obscure bug for which Mike E had provided a patch as well.
+    Kevin Cozens has submitted some fixes and modifications which have
+    not been incorporated yet in their entirety.
+
+Version 1.35
+    Todd Showalter discovered that the number of free cells reported
+    after GC was incorrect, which could also cause unnecessary allocations.
+
+Version 1.34
+    Long missing version. Lots of bugfixes have accumulated in my email, so
+    I had to start using them. In this version, Keenan Pepper has submitted
+    a bugfix for the string comparison library procedure, Wouter Boeke
+    modified some code that was casting to the wrong type and crashed on
+    some machines, "SheppardCo" submitted a replacement "modulo" code and
+    Scott Fenton submitted lots of corrections that shut up some compiler
+    warnings. Brian Maher submitted instructions on how to build on OS-X.
+    I have to dig deeper into my mailbox and find earlier emails, too.
+
+Version 1.33
+    Charles Hayden fixed a nasty GC bug of the new stack frame, while in
+    the process of porting TinyScheme to C++. He also submitted other
+    changes, and other people also had comments or requests, but the GC
+    bug was so important that this version is put through the door to
+    correct it.
+
+Version 1.32
+    Stephen Gildea put some quality time on TinyScheme again, and made
+    a whole lot of changes to the interpreter that made it noticeably
+    faster.
+
+Version 1.31
+    Patches to the hastily-done version 1.30. Stephen Gildea fixed
+    some things done wrongly, and Richard Russo fixed the makefile
+    for building on Windows. Property lists (heritage from MiniScheme)
+    are now optional and have disappeared from the interface. They
+    should be considered as deprecated.
+
+Version 1.30
+    After many months, I followed Preston Bannister's advice of
+    using macros and a single source text to keep the enums and the
+    dispatch table in sync, and I used his contributed "opdefines.h".
+    Timothy Downs contributed a helpful function, "scheme_call".
+    Stephen Gildea contributed new versions of the makefile and
+    practically all other sources. He created a built-in STRING-APPEND,
+    and fixed a lot of other bugs.
+    Ruhi Bloodworth reported fixes necessary for OS X and a small
+    bug in dynload.c.
+
+Version 1.29
+    The previous version contained a lot of corrections, but there
+    were a lot more that still wait on a sheet of paper lost in a
+    carton someplace after my house move... Manuel Heras-Gilsanz
+    noticed this and resent his own contribution, which relies on
+    another bugfix that v.1.28 was missing: a problem with string
+    output, that this version fixes. I hope other people will take
+    the time to resend their contributions, if they didn't make it
+    to v.1.28.
+
+Version 1.28
+    Many people have contacted me with bugfixes or remarks in
+    the three months I was inactive. A lot of them spotted that
+    scheme_deinit crashed while reporting gc results. They suggested
+    that sc->outport be set to NIL in scheme_deinit, which I did.
+    Dennis Taylor remarked that OP_VALUEPRINT reset sc->value instead
+    of preserving it. He submitted a modification which I adopted
+    partially. David Hovemeyer sent me many little changes, that you
+    will find in version 1.28, and Partice Stoessel modified the
+    float reader to conform to R5RS.
+
+Version 1.27
+    Version 1.27 is the successor of 1.25. Bug fixes only, but I had to
+    release them so that everybody can profit. 'Backchar' tried to write
+    back to the string, which obviously didn't work for const strings.
+    'Substring' didn't check for crossed start and end indices. Defines
+    changed to restore the ability to compile under MSVC.
+
+Version 1.26
+    Version 1.26 was never released. I changed a lot of things, in fact
+    too much, even the garbage collector, and hell broke loose. I'll
+    try a more gradual approach next time.
+
+Version 1.25
+    Types have been homogenized to be able to accommodate a different
+    representation. Plus, promises are no longer closures. Unfortunately,
+    I discovered that continuations and force/delay do not pass the SCM
+    test (and never did)... However, on the bright side, what little
+    modifications I did had a large impact on the footprint:
+    USE_NO_FEATURES now produces an object file of 63960 bytes on Linux!
+
+Version 1.24
+    SCM tests now pass again after change in atom2str.
+
+Version 1.23
+    Finally I managed to mess it up with my version control. Version
+    1.22 actually lacked some of the things I have been fixing in the
+    meantime. This should be considered as a complete replacement for
+    1.22.
+
+Version 1.22
+    The new ports had a bug in LOAD. MK_CLOSURE is introduced.
+    Shawn Wagner inquired about string->number and number->string.
+    I added string->atom and atom->string and defined the number
+    functions from them. Doing that, I fixed WRITE applied to symbols
+    (it didn't quote them). Unfortunately, minimum build is now
+    slightly larger than 64k... I postpone action because Jason's idea
+    might solve it elegantly.
+
+Version 1.21
+    Jason Felice submitted a radically different datatype representation
+    which he had implemented. While discussing its pros and cons, it
+    became apparent that the current implementation of ports suffered
+    from a grave fault: ports were not garbage-collected. I changed the
+    ports to be heap-allocated, which enabled the use of string ports
+    for loading. Jason also fixed errors in the garbage collection of
+    vectors. USE_VERBATIM is gone. "ssp_compiler.c" has a better solution
+    on HTML generation. A bug involving backslash notation in strings
+    has been fixed. '-c' flag now executes next argument as a stream of
+    Scheme commands. Foreign functions are now also heap allocated,
+    and scheme_define is used to define everything.
+
+Version 1.20
+    Tracing has been added. The toplevel loop has been slightly
+    rearranged. Backquote reading for vector templates has been
+    sanitized. Symbol interning is now correct. Arithmetic functions
+    have been corrected. APPLY, MAP, FOR-EACH, numeric comparison
+    functions fixed. String reader/writer understands \xAA notation.
+
+Version 1.19
+    Carriage Return now delimits identifiers. DOS-formatted Scheme files
+    can be used by Unix. Random number generator added to library.
+    Fixed some glitches of the new type-checking scheme. Fixed erroneous
+    (append '() 'a) behavior. Will continue with r4rstest.scm to
+    fix errors.
+
+Version 1.18
+    The FFI has been extended. USE_VERBOSE_GC has gone. Anyone wanting
+    the same functionality can put (gcverbose #t) in init.scm.
+    print-width was removed, along with three corresponding op-codes.
+    Extended character constants with ASCII names were added.
+    mk_counted_string paves the way for full support of binary strings.
+    As much as possible of the type-checking chores were delegated
+    to the inner loop, thus reducing the code size to less than 4200 loc!
+
+Version 1.17
+    Dynamically-loaded extensions are more fully integrated.
+    TinyScheme is now distributed under the BSD open-source license.
+
+Version 1.16
+    Dynamically-loaded extensions introduced (USE_DL).
+    Santeri Paavolainen found a race condition: When a cons is executed,
+    and each of the two arguments is a constructing function,  GC could
+    happen before all arguments are evaluated and cons() is called, and
+    the evaluated arguments would all be reclaimed!
+    Fortunately, such a case was rare in the code, although it is
+    a pitfall in new code and code in foreign functions. Currently, only
+    one such case remains, when COLON_HOOK is defined.
+
+Version 1.15
+    David Gould also contributed some changes that speed up operation.
+    Kirk Zurell fixed HASPROP.
+    The Garbage Collection didn't collect all the garbage...fixed.
+
+Version 1.14
+    Unfortunately, after Andre fixed the GC it became obvious that the
+    algorithm was too slow... Fortunately, David Gould found a way to
+    speed it up.
+
+Version 1.13
+    Silly bug involving division by zero resolved by Roland Kaufman.
+    Macintoch support from Shmulik Regev.
+    Float parser bug fixed by Alexander Shendi.
+    GC bug from Andru Luvisi.
+
+Version 1.12
+    Cis* incorrectly called isalpha() instead of isascii()
+    Added USE_CHAR_CLASSIFIERS, USE_STRING_PORTS.
+
+Version 1.11
+    BSDI defines isnumber... changed all similar functions to is_*
+    EXPT now has correct definition. Added FLOOR,CEILING,TRUNCATE
+    and ROUND, courtesy of Bengt Kleberg. Preprocessor symbols now
+    have values 1 or 0, and can be set as compiler defines (proposed
+    by Andy Ganor *months* ago). 'prompt' and 'InitFile' can now be
+    defined during compilation, too.
+
+Version 1.10
+    Another bug when file ends with comment!
+    Added DEFINE-MACRO in init.scm, courtesy of Andy Gaynor.
+
+Version 1.09
+    Removed bug when READ met EOF. lcm.
+
+Version 1.08
+    quotient,remainder and modulo. gcd.
+
+Version 1.07
+    '=>' in cond now exists
+    list? now checks for circularity
+    some reader bugs removed
+    Reader is more consistent wrt vectors
+    Quote and Quasiquote work with vectors
+
+Version 1.06
+    #! is now skipped
+    generic-assoc bug removed
+    strings are now managed differently, hack.txt is removed
+    various delicate points fixed
+
+Version 1.05
+    Support for scripts, *args*, "-1" option.
+    Various R5RS procedures.
+    *sharp-hook*
+    Handles unmatched parentheses.
+    New architecture for procedures.
+
+Version 1.04
+    Added missing T_ATOM bits...
+    Added vectors
+    Free-list is sorted by address, since vectors need consecutive cells.
+    (quit <exitcode>) for use with scripts
+
+Version 1.03 (26 Aug 1998):
+    Extended .h with useful functions for FFI
+    Library: with-input-* etc.
+    Finished R5RS I/O, added string ports.
+
+Version 1.02 (25 Aug 1998):
+    First part of R5RS I/O.
diff --git a/plug-ins/script-fu/tinyscheme/COPYING b/plug-ins/script-fu/tinyscheme/COPYING
new file mode 100644
index 0000000..a6c49a2
--- /dev/null
+++ b/plug-ins/script-fu/tinyscheme/COPYING
@@ -0,0 +1,31 @@
+                         LICENSE TERMS
+
+Copyright (c) 2000, Dimitrios Souflis
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+Redistributions of source code must retain the above copyright notice,
+this list of conditions and the following disclaimer.
+
+Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+
+Neither the name of Dimitrios Souflis nor the names of the
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR 
+CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
+EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 
+PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 
+PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 
+LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 
+NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/plug-ins/script-fu/tinyscheme/Makefile.am b/plug-ins/script-fu/tinyscheme/Makefile.am
new file mode 100644
index 0000000..49ce643
--- /dev/null
+++ b/plug-ins/script-fu/tinyscheme/Makefile.am
@@ -0,0 +1,26 @@
+## Process this file with automake to produce Makefile.in
+
+AM_CFLAGS = \
+	-DSTANDALONE=0		\
+	-DUSE_INTERFACE=1	\
+	-DUSE_MATH=1		\
+	-DUSE_ASCII_NAMES=0	\
+	-DUSE_STRLWR=0		\
+	-I$(top_srcdir)		\
+	$(GLIB_CFLAGS)
+
+noinst_LIBRARIES = libtinyscheme.a
+
+libtinyscheme_a_SOURCES = \
+	scheme.c		\
+	opdefines.h		\
+	scheme-private.h	\
+	scheme.h
+
+EXTRA_DIST = \
+	BUILDING		\
+	CHANGES			\
+	COPYING			\
+	hack.txt		\
+	Manual.txt		\
+	MiniSCHEMETribute.txt
diff --git a/plug-ins/script-fu/tinyscheme/Makefile.in b/plug-ins/script-fu/tinyscheme/Makefile.in
new file mode 100644
index 0000000..c506dfe
--- /dev/null
+++ b/plug-ins/script-fu/tinyscheme/Makefile.in
@@ -0,0 +1,924 @@
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+# Copyright (C) 1994-2020 Free Software Foundation, Inc.
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+
+# This program is distributed in the hope that it will be useful,
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+
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+	COPYING			\
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+	MiniSCHEMETribute.txt
+
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+
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+	@for dep in $?; do \
+	  case '$(am__configure_deps)' in \
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+	      ( cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh ) \
+	        && { if test -f $@; then exit 0; else break; fi; }; \
+	      exit 1;; \
+	  esac; \
+	done; \
+	echo ' cd $(top_srcdir) && $(AUTOMAKE) --gnu plug-ins/script-fu/tinyscheme/Makefile'; \
+	$(am__cd) $(top_srcdir) && \
+	  $(AUTOMAKE) --gnu plug-ins/script-fu/tinyscheme/Makefile
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+	@case '$?' in \
+	  *config.status*) \
+	    cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
+	  *) \
+	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__maybe_remake_depfiles)'; \
+	    cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__maybe_remake_depfiles);; \
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+
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+
+$(top_srcdir)/configure: @MAINTAINER_MODE_TRUE@ $(am__configure_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
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+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(am__aclocal_m4_deps):
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+clean-noinstLIBRARIES:
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+	$(AM_V_at)-rm -f libtinyscheme.a
+	$(AM_V_AR)$(libtinyscheme_a_AR) libtinyscheme.a $(libtinyscheme_a_OBJECTS) $(libtinyscheme_a_LIBADD)
+	$(AM_V_at)$(RANLIB) libtinyscheme.a
+
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+	-rm -f *.$(OBJEXT)
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+	fi
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+	esac; \
+	for i in $$list; do \
+	  if test -f "$$i"; then \
+	    echo "$(subdir)/$$i"; \
+	  else \
+	    echo "$$sdir/$$i"; \
+	  fi; \
+	done >> $(top_builddir)/cscope.files
+
+distclean-tags:
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+	list='$(DISTFILES)'; \
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+	  */*) $(MKDIR_P) `echo "$$dist_files" | \
+			   sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
+			   sort -u` ;; \
+	esac; \
+	for file in $$dist_files; do \
+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+	  if test -d $$d/$$file; then \
+	    dir=`echo "/$$file" | sed -e 's,/[^/]*$$,,'`; \
+	    if test -d "$(distdir)/$$file"; then \
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+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
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+	    || cp -p $$d/$$file "$(distdir)/$$file" \
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+	  fi; \
+	done
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diff --git a/plug-ins/script-fu/tinyscheme/Manual.txt b/plug-ins/script-fu/tinyscheme/Manual.txt
new file mode 100644
index 0000000..7ef62e9
--- /dev/null
+++ b/plug-ins/script-fu/tinyscheme/Manual.txt
@@ -0,0 +1,452 @@
+
+
+                       TinySCHEME Version 1.41
+
+                    "Safe if used as prescribed"
+                    -- Philip K. Dick, "Ubik"
+
+This software is open source, covered by a BSD-style license.
+Please read accompanying file COPYING.
+-------------------------------------------------------------------------------
+
+     This Scheme interpreter is based on MiniSCHEME version 0.85k4
+     (see miniscm.tar.gz in the Scheme Repository)
+     Original credits in file MiniSCHEMETribute.txt.
+
+     D. Souflis (dsouflis@acm.org)
+
+-------------------------------------------------------------------------------
+     What is TinyScheme?
+     -------------------
+
+     TinyScheme is a lightweight Scheme interpreter that implements as large
+     a subset of R5RS as was possible without getting very large and
+     complicated. It is meant to be used as an embedded scripting interpreter
+     for other programs. As such, it does not offer IDEs or extensive toolkits
+     although it does sport a small top-level loop, included conditionally.
+     A lot of functionality in TinyScheme is included conditionally, to allow
+     developers freedom in balancing features and footprint.
+
+     As an embedded interpreter, it allows multiple interpreter states to
+     coexist in the same program, without any interference between them.
+     Programmatically, foreign functions in C can be added and values
+     can be defined in the Scheme environment. Being a quite small program,
+     it is easy to comprehend, get to grips with, and use.
+
+     Known bugs
+     ----------
+
+     TinyScheme is known to misbehave when memory is exhausted.
+
+
+     Things that keep missing, or that need fixing
+     ---------------------------------------------
+
+     There are no hygienic macros. No rational or
+     complex numbers. No unwind-protect and call-with-values.
+
+     Maybe (a subset of) SLIB will work with TinySCHEME...
+
+     Decent debugging facilities are missing. Only tracing is supported
+     natively.
+
+
+     Scheme Reference
+     ----------------
+
+     If something seems to be missing, please refer to the code and
+     "init.scm", since some are library functions.  Refer to the MiniSCHEME
+     readme as a last resort.
+
+          Environments
+     (interaction-environment)
+     See R5RS. In TinySCHEME, immutable list of association lists.
+
+     (current-environment)
+     The environment in effect at the time of the call. An example of its
+     use and its utility can be found in the sample code that implements
+     packages in "init.scm":
+
+          (macro (package form)
+               `(apply (lambda ()
+                         ,@(cdr form)
+                         (current-environment))))
+
+     The environment containing the (local) definitions inside the closure
+     is returned as an immutable value.
+
+     (defined? <symbol>) (defined? <symbol> <environment>)
+     Checks whether the given symbol is defined in the current (or given)
+     environment.
+
+          Symbols
+     (gensym)
+     Returns a new interned symbol each time. Will probably move to the
+     library when string->symbol is implemented.
+
+          Directives
+     (gc)
+     Performs garbage collection immediately.
+
+     (gcverbose) (gcverbose <bool>)
+     The argument (defaulting to #t) controls whether GC produces
+     visible outcome.
+
+     (quit) (quit <num>)
+     Stops the interpreter and sets the 'retcode' internal field (defaults
+     to 0). When standalone, 'retcode' is returned as exit code to the OS.
+
+     (tracing <num>)
+     1, turns on tracing. 0 turns it off. (Only when USE_TRACING is 1).
+
+          Mathematical functions
+     Since rationals and complexes are absent, the respective functions
+     are also missing.
+     Supported: exp, log, sin, cos, tan, asin, acos, atan, floor, ceiling,
+     trunc, round and also sqrt and expt when USE_MATH=1.
+     Number-theoretical quotient, remainder and modulo, gcd, lcm.
+     Library: exact?, inexact?, odd?, even?, zero?, positive?, negative?,
+     exact->inexact. inexact->exact is a core function.
+
+          Type predicates
+     boolean?,eof-object?,symbol?,number?,string?,integer?,real?,list?,null?,
+     char?,port?,input-port?,output-port?,procedure?,pair?,environment?',
+     vector?. Also closure?, macro?.
+
+          Types
+     Types supported:
+
+          Numbers (integers and reals)
+          Symbols
+          Pairs
+          Strings
+          Characters
+          Ports
+          Eof object
+          Environments
+          Vectors
+
+          Literals
+     String literals can contain escaped quotes \" as usual, but also
+     \n, \r, \t, \xDD (hex representations) and \DDD (octal representations).
+     Note also that it is possible to include literal newlines in string
+     literals, e.g.
+
+          (define s "String with newline here
+          and here
+          that can function like a HERE-string")
+
+     Character literals contain #\space and #\newline and are supplemented
+     with #\return and #\tab, with obvious meanings. Hex character
+     representations are allowed (e.g. #\x20 is #\space).
+     When USE_ASCII_NAMES is defined, various control characters can be
+     referred to by their ASCII name.
+     0	     #\nul	       17       #\dc1
+     1	     #\soh             18       #\dc2
+     2	     #\stx             19       #\dc3
+     3	     #\etx             20       #\dc4
+     4	     #\eot             21       #\nak
+     5	     #\enq             22       #\syn
+     6	     #\ack             23       #\etv
+     7	     #\bel             24       #\can
+     8	     #\bs              25       #\em
+     9	     #\ht              26       #\sub
+     10	     #\lf              27       #\esc
+     11	     #\vt              28       #\fs
+     12	     #\ff              29       #\gs
+     13	     #\cr              30       #\rs
+     14	     #\so              31       #\us
+     15	     #\si
+     16	     #\dle             127      #\del 		
+
+     Numeric literals support #x #o #b and #d. Flonums are currently read only
+     in decimal notation. Full grammar will be supported soon.
+
+          Quote, quasiquote etc.
+     As usual.
+
+          Immutable values
+     Immutable pairs cannot be modified by set-car! and set-cdr!.
+     Immutable strings cannot be modified via string-set!
+
+          I/O
+     As per R5RS, plus String Ports (see below).
+     current-input-port, current-output-port,
+     close-input-port, close-output-port, input-port?, output-port?,
+     open-input-file, open-output-file.
+     read, write, display, newline, write-char, read-char, peek-char.
+     char-ready? returns #t only for string ports, because there is no
+     portable way in stdio to determine if a character is available.
+     Also open-input-output-file, set-input-port, set-output-port (not R5RS)
+     Library: call-with-input-file, call-with-output-file,
+     with-input-from-file, with-output-from-file and
+     with-input-output-from-to-files, close-port and input-output-port?
+     (not R5RS).
+     String Ports: open-input-string, open-output-string, get-output-string,
+     open-input-output-string. Strings can be used with I/O routines.
+
+          Vectors
+     make-vector, vector, vector-length, vector-ref, vector-set!, list->vector,
+     vector-fill!, vector->list, vector-equal? (auxiliary function, not R5RS)
+
+          Strings
+     string, make-string, list->string, string-length, string-ref, string-set!,
+     substring, string->list, string-fill!, string-append, string-copy.
+     string=?, string<?, string>?, string>?, string<=?, string>=?.
+     (No string-ci*? yet). string->number, number->string. Also atom->string,
+     string->atom (not R5RS).
+
+          Symbols
+     symbol->string, string->symbol
+
+          Characters
+     integer->char, char->integer.
+     char=?, char<?, char>?, char<=?, char>=?.
+     (No char-ci*?)
+
+          Pairs & Lists
+     cons, car, cdr, list, length, map, for-each, foldr, list-tail,
+     list-ref, last-pair, reverse, append.
+     Also member, memq, memv, based on generic-member, assoc, assq, assv
+     based on generic-assoc.
+
+          Streams
+     head, tail, cons-stream
+
+          Control features
+     Apart from procedure?, also macro? and closure?
+     map, for-each, force, delay, call-with-current-continuation (or call/cc),
+     eval, apply. 'Forcing' a value that is not a promise produces the value.
+     There is no call-with-values, values, nor dynamic-wind. Dynamic-wind in
+     the presence of continuations would require support from the abstract
+     machine itself.
+
+          Property lists
+     TinyScheme inherited from MiniScheme property lists for symbols.
+     put, get.
+
+          Dynamically-loaded extensions
+     (load-extension <filename without extension>)
+     Loads a DLL declaring foreign procedures. On Unix/Linux, one can make use
+     of the ld.so.conf file or the LD_RUN_PATH system variable in order to place
+     the library in a directory other than the current one. Please refer to the
+     appropriate 'man' page.
+
+          Esoteric procedures
+     (oblist)
+     Returns the oblist, an immutable list of all the symbols.
+
+     (macro-expand <form>)
+     Returns the expanded form of the macro call denoted by the argument
+
+     (define-with-return (<procname> <args>...) <body>)
+     Like plain 'define', but makes the continuation available as 'return'
+     inside the procedure. Handy for imperative programs.
+
+     (new-segment <num>)
+     Allocates more memory segments.
+
+     defined?
+     See "Environments"
+
+     (get-closure-code <closure>)
+     Gets the code as scheme data.
+
+     (make-closure <code> <environment>)
+     Makes a new closure in the given environment.
+
+          Obsolete procedures
+     (print-width <object>)
+
+     Programmer's Reference
+     ----------------------
+
+     The interpreter state is initialized with "scheme_init".
+     Custom memory allocation routines can be installed with an alternate
+     initialization function: "scheme_init_custom_alloc".
+     Files can be loaded with "scheme_load_file". Strings containing Scheme
+     code can be loaded with "scheme_load_string". It is a good idea to
+     "scheme_load" init.scm before anything else.
+
+     External data for keeping external state (of use to foreign functions)
+     can be installed with "scheme_set_external_data".
+     Foreign functions are installed with "assign_foreign". Additional
+     definitions can be added to the interpreter state, with "scheme_define"
+     (this is the way HTTP header data and HTML form data are passed to the
+     Scheme script in the Altera SQL Server). If you wish to define the
+     foreign function in a specific environment (to enhance modularity),
+     use "assign_foreign_env".
+
+     The procedure "scheme_apply0" has been added with persistent scripts in
+     mind. Persistent scripts are loaded once, and every time they are needed
+     to produce HTTP output, appropriate data are passed through global
+     definitions and function "main" is called to do the job. One could
+     add easily "scheme_apply1" etc.
+
+     The interpreter state should be deinitialized with "scheme_deinit".
+
+     DLLs containing foreign functions should define a function named
+     init_<base-name>. E.g. foo.dll should define init_foo, and bar.so
+     should define init_bar. This function should assign_foreign any foreign
+     function contained in the DLL.
+
+     The first dynamically loaded extension available for TinyScheme is
+     a regular expression library. Although it's by no means an
+     established standard, this library is supposed to be installed in
+     a directory mirroring its name under the TinyScheme location.
+
+
+     Foreign Functions
+     -----------------
+
+     The user can add foreign functions in C. For example, a function
+     that squares its argument:
+
+          pointer square(scheme *sc, pointer args) {
+           if(args!=sc->NIL) {
+               if(sc->isnumber(sc->pair_car(args))) {
+                    double v=sc->rvalue(sc->pair_car(args));
+                    return sc->mk_real(sc,v*v);
+               }
+           }
+           return sc->NIL;
+          }
+
+   Foreign functions are now defined as closures:
+
+   sc->interface->scheme_define(
+        sc,
+        sc->global_env,
+        sc->interface->mk_symbol(sc,"square"),
+        sc->interface->mk_foreign_func(sc, square));
+
+
+     Foreign functions can use the external data in the "scheme" struct
+     to implement any kind of external state.
+
+     External data are set with the following function:
+          void scheme_set_external_data(scheme *sc, void *p);
+
+     As of v.1.17, the canonical way for a foreign function in a DLL to
+     manipulate Scheme data is using the function pointers in sc->interface.
+
+     Standalone
+     ----------
+
+     Usage: tinyscheme -?
+     or:    tinyscheme [<file1> <file2> ...]
+     followed by
+	       -1 <file> [<arg1> <arg2> ...]
+	       -c <Scheme commands> [<arg1> <arg2> ...]
+     assuming that the executable is named tinyscheme.
+
+     Use - in the place of a filename to denote stdin.
+     The -1 flag is meant for #! usage in shell scripts. If you specify
+          #! /somewhere/tinyscheme -1
+     then tinyscheme will be called to process the file. For example, the
+     following script echoes the Scheme list of its arguments.
+
+	       #! /somewhere/tinyscheme -1
+	       (display *args*)
+
+     The -c flag permits execution of arbitrary Scheme code.
+
+
+     Error Handling
+     --------------
+
+     Errors are recovered from without damage. The user can install his
+     own handler for system errors, by defining *error-hook*. Defining
+     to '() gives the default behavior, which is equivalent to "error".
+     USE_ERROR_HOOK must be defined.
+
+     A simple exception handling mechanism can be found in "init.scm".
+     A new syntactic form is introduced:
+
+          (catch <expr returned exceptionally>
+               <expr1> <expr2> ... <exprN>)
+
+     "Catch" establishes a scope spanning multiple call-frames
+     until another "catch" is encountered.
+
+     Exceptions are thrown with:
+
+          (throw "message")
+
+     If used outside a (catch ...), reverts to (error "message").
+
+     Example of use:
+
+          (define (foo x) (write x) (newline) (/ x 0))
+
+          (catch (begin (display "Error!\n") 0)
+               (write "Before foo ... ")
+               (foo 5)
+               (write "After foo"))
+
+     The exception mechanism can be used even by system errors, by
+
+          (define *error-hook* throw)
+
+     which makes use of the error hook described above.
+
+     If necessary, the user can devise his own exception mechanism with
+     tagged exceptions etc.
+
+
+     Reader extensions
+     -----------------
+
+     When encountering an unknown character after '#', the user-specified
+     procedure *sharp-hook* (if any), is called to read the expression.
+     This can be used to extend the reader to handle user-defined constants
+     or whatever. It should be a procedure without arguments, reading from
+     the current input port (which will be the load-port).
+
+
+     Colon Qualifiers - Packages
+     ---------------------------
+
+     When USE_COLON_HOOK=1:
+     The lexer now recognizes the construction <qualifier>::<symbol> and
+     transforms it in the following manner (T is the transformation function):
+
+          T(<qualifier>::<symbol>) = (*colon-hook* 'T(<symbol>) <qualifier>)
+
+     where <qualifier> is a symbol not containing any double-colons.
+
+     As the definition is recursive, qualifiers can be nested.
+     The user can define his own *colon-hook*, to handle qualified names.
+     By default, "init.scm" defines *colon-hook* as EVAL. Consequently,
+     the qualifier must denote a Scheme environment, such as one returned
+     by (interaction-environment). "Init.scm" defines a new syntantic form,
+     PACKAGE, as a simple example. It is used like this:
+
+          (define toto
+               (package
+                    (define foo 1)
+                    (define bar +)))
+
+          foo                                     ==>  Error, "foo" undefined
+          (eval 'foo)                             ==>  Error, "foo" undefined
+          (eval 'foo toto)                        ==>  1
+          toto::foo                               ==>  1
+          ((eval 'bar toto) 2 (eval 'foo toto))   ==>  3
+          (toto::bar 2 toto::foo)                 ==>  3
+          (eval (bar 2 foo) toto)                 ==>  3
+
+     If the user installs another package infrastructure, he must define
+     a new 'package' procedure or macro to retain compatibility with supplied
+     code.
+
+     Note: Older versions used ':' as a qualifier. Unfortunately, the use
+     of ':' as a pseudo-qualifier in existing code (i.e. SLIB) essentially
+     precludes its use as a real qualifier.
+
+
+
+
+
+
+
+
diff --git a/plug-ins/script-fu/tinyscheme/MiniSCHEMETribute.txt b/plug-ins/script-fu/tinyscheme/MiniSCHEMETribute.txt
new file mode 100644
index 0000000..185f0ec
--- /dev/null
+++ b/plug-ins/script-fu/tinyscheme/MiniSCHEMETribute.txt
@@ -0,0 +1,88 @@
+     TinyScheme would not exist if it wasn't for MiniScheme. I had just
+     written the HTTP server for Ovrimos SQL Server, and I was lamenting the
+     lack of a scripting language. Server-side Javascript would have been the
+     preferred solution, had there been a Javascript interpreter I could
+     lay my hands on. But there weren't. Perl would have been another solution,
+     but it was probably ten times bigger that the program it was supposed to
+     be embedded in. There would also be thorny licencing issues. 
+     
+     So, the obvious thing to do was find a truly small interpreter. Forth
+     was a language I had once quasi-implemented, but the difficulty of
+     handling dynamic data and the weirdness of the language put me off. I then
+     looked around for a LISP interpreter, the next thing I knew was easy to
+     implement. Alas, the LeLisp I knew from my days in UPMC (Universite Pierre
+     et Marie Curie) had given way to Common Lisp, a megalith of a language!
+     Then my search lead me to Scheme, a language I knew was very orthogonal
+     and clean. When I found Mini-Scheme, a single C file of some 2400 loc, I 
+     fell in love with it! What if it lacked floating-point numbers and 
+     strings! The rest, as they say, is history.
+     
+     Below  are the original credits. Don't email Akira KIDA, the address has
+     changed.
+     
+     ---------- Mini-Scheme Interpreter Version 0.85 ----------
+
+                coded by Atsushi Moriwaki (11/5/1989)
+
+            E-MAIL :  moriwaki@kurims.kurims.kyoto-u.ac.jp
+
+               THIS SOFTWARE IS IN THE PUBLIC DOMAIN
+               ------------------------------------
+ This software is completely free to copy, modify and/or re-distribute.
+ But I would appreciate it if you left my name on the code as the author.
+
+  This version has been modified by R.C. Secrist.
+
+  Mini-Scheme is now maintained by Akira KIDA.
+
+  This is a revised and modified version by Akira KIDA.
+   current version is 0.85k4 (15 May 1994)
+
+  Please send suggestions, bug reports and/or requests to:
+        <SDI00379@niftyserve.or.jp>
+
+
+     Features compared to MiniSCHEME
+     -------------------------------
+
+     All code is now reentrant. Interpreter state is held in a 'scheme'
+     struct, and many interpreters can coexist in the same program, possibly
+     in different threads. The user can specify user-defined memory allocation
+     primitives. (see "Programmer's Reference")
+
+     The reader is more consistent.
+
+     Strings, characters and flonums are supported. (see "Types")
+
+     Files being loaded can be nested up to some depth.
+
+     R5RS I/O is there, plus String Ports. (see "Scheme Reference","I/O")
+
+     Vectors exist.
+
+     As a standalone application, it supports command-line arguments.
+     (see "Standalone")
+
+     Running out of memory is now handled.
+
+     The user can add foreign functions in C. (see "Foreign Functions")
+
+     The code has been changed slightly, core functions have been moved
+     to the library, behavior has been aligned with R5RS etc.
+
+     Support has been added for user-defined error recovery.
+     (see "Error Handling")
+
+     Support has been added for modular programming.
+     (see "Colon Qualifiers - Packages")
+
+     To enable this, EVAL has changed internally, and can
+     now take two arguments, as per R5RS. Environments are supported.
+     (see "Colon Qualifiers - Packages")
+
+     Promises are now evaluated once only.
+
+     (macro (foo form) ...) is now equivalent to (macro foo (lambda(form) ...))
+
+     The reader can be extended using new #-expressions
+     (see "Reader extensions")
diff --git a/plug-ins/script-fu/tinyscheme/README b/plug-ins/script-fu/tinyscheme/README
new file mode 100644
index 0000000..4411119
--- /dev/null
+++ b/plug-ins/script-fu/tinyscheme/README
@@ -0,0 +1,14 @@
+This directory contains a version of TinyScheme which has been modified
+to support UTF-8 coded strings. The strings stored in a data cell are
+expected to be in UTF-8 format. This allows the continued use of gchar
+pointers to pass around the strings. Processing the strings will require
+conversion to unicode at times depending on the specific operation that
+needs to be done on the UTF-8 coded strings.
+
+The string length value stored in a data cell is the length in bytes of that
+string including the terminating NUL.
+
+Routines that want a string length for a UTF-8 coded string will be passed
+the number of characters and not the number of bytes. If the number of bytes
+is needed, the normal call to strlen() will work.
+
diff --git a/plug-ins/script-fu/tinyscheme/hack.txt b/plug-ins/script-fu/tinyscheme/hack.txt
new file mode 100644
index 0000000..6aba7a7
--- /dev/null
+++ b/plug-ins/script-fu/tinyscheme/hack.txt
@@ -0,0 +1,233 @@
+
+                              How to hack TinyScheme
+                              ----------------------
+
+     TinyScheme is easy to learn and modify. It is structured like a
+     meta-interpreter, only it is written in C. All data are Scheme
+     objects, which facilitates both understanding/modifying the
+     code and reifying the interpreter workings.
+
+     In place of a dry description, we will pace through the addition
+     of a useful new datatype: garbage-collected memory blocks.
+     The interface will be:
+
+          (make-block <n> [<fill>]) makes a new block of the specified size
+               optionally filling it with a specified byte
+          (block? <obj>)
+          (block-length <block>)
+          (block-ref <block> <index>) retrieves byte at location
+          (block-set! <block> <index> <byte>) modifies byte at location
+     
+     In the sequel, lines that begin with '>' denote lines to add to the
+     code. Lines that begin with '|' are just citations of existing code.
+     Lines that begin with X are deleted.
+
+     First of all, we need to assign a typeid to our new type. Typeids
+     in TinyScheme are small integers declared in an enum, very close to
+     the top of scheme.c; it begins with T_STRING. Add a new one before the
+     end, call it T_MEMBLOCK. Adjust T_LAST_SYSTEM_TYPE.
+
+|      T_ENVIRONMENT=14,
+X      T_LAST_SYSTEM_TYPE=14
+>      T_MEMBLOCK=15,
+>      T_LAST_SYSTEM_TYPE=15
+|    };
+
+     Then, some helper macros would be useful. Go to where is_string() and
+     the rest are defined and define:
+
+>    int is_memblock(pointer p)      { return (type(p)==T_MEMBLOCK); }
+
+     This actually is a function, because it is meant to be exported by
+     scheme.h. If no foreign function will ever manipulate a memory block,
+     you can instead define it as a macro
+
+>    #define is_memblock(p) (type(p)==T_MEMBLOCK)
+
+     Then we make space for the new type in the main data structure:
+     struct cell. As it happens, the _string part of the union _object
+     (that is used to hold character strings) has two fields that suit us:
+
+|         struct {
+|              char   *_svalue;
+|              int   _keynum;
+|         } _string;
+
+     We can use _svalue to hold the actual pointer and _keynum to hold its
+     length. If we couldn't reuse existing fields, we could always add other
+     alternatives in union _object.
+
+     We then proceed to write the function that actually makes a new block.
+     For conformance reasons, we name it mk_memblock
+
+>     static pointer mk_memblock(scheme *sc, int len, char fill) {
+>          pointer x;
+>          char *p=(char*)sc->malloc(len);
+>
+>          if(p==0) {
+>               return sc->NIL;
+>          }
+>          x = get_cell(sc, sc->NIL, sc->NIL);
+>
+>          typeflag(x) = T_MEMBLOCK|T_ATOM;
+>          strvalue(x)=p;
+>          keynum(x)=len;
+>          memset(p,fill,len);
+>          return (x);
+>     }
+
+     The memory used by the MEMBLOCK will have to be freed when the cell
+     is reclaimed during garbage collection. There is a placeholder for
+     that staff, function finalize_cell(), currently handling strings only.
+
+|     static void finalize_cell(scheme *sc, pointer a) {
+|          if(is_string(a)) {
+|               sc->free(strvalue(a));
+>          else if(is_memblock(a)) {
+>               sc->free(strvalue(a));
+|          } else if(is_port(a)) {
+
+     There are no MEMBLOCK literals, so we don't concern ourselves with
+     the READER part (yet!). We must cater to the PRINTER, though. We
+     add one case more in atom2str().
+
+|    } else if (is_foreign(l)) {
+|         p = sc->strbuff;
+|         snprintf(p,STRBUFFSIZE,"#<FOREIGN PROCEDURE %ld>", procnum(l));
+>    } else if (ismemblock(l)) {
+>         p = "#<MEMBLOCK>";
+|    } else if (is_continuation(l)) {
+|         p = "#<CONTINUATION>";
+|    } else {
+
+     Whenever a MEMBLOCK is displayed, it will look like that.
+
+     Now, we must add the interface functions: constructor, predicate,
+     accessor, modifier. We must in fact create new op-codes for the
+     virtual machine underlying TinyScheme. Since version 1.30, TinyScheme
+     uses macros and a single source text to keep the enums and the
+     dispatch table in sync. That's where the op-codes are declared. Note
+     that the opdefines.h file uses unusually long lines to accommodate
+     all the information; adjust your editor to handle this. The file has
+     six columns: A to Z. they contain:
+       - Column A is the name of a routine to handle the scheme function.
+       - Column B is the name the scheme function.
+       - Columns C and D are the minimum and maximum number of arguments
+         that are accepted by the scheme function.
+       - Column E is a set of flags that are used when the interpreter
+         verifies that the passed parameters are of the correct type.
+       - Column F is used to create a set of enums. The enum is used in a
+         switch in the routine listed in column A to get to the code that
+	 does the work needed for the scheme function.
+     For reasons of cohesion, we add the new op-codes right after those
+     for vectors:
+
+|   _OP_DEF(opexe_2, "vector-set!",                    3,  3,       TST_VECTOR TST_NATURAL TST_ANY,  OP_VECSET           )
+>   _OP_DEF(opexe_2, "make-block",                     1,  2,       TST_NATURAL TST_CHAR,            OP_MKBLOCK          )
+>   _OP_DEF(opexe_2, "block-length",                   1,  1,       T_MEMBLOCK,                      OP_BLOCKLEN         )
+>   _OP_DEF(opexe_2, "block-ref",                      2,  2,       T_MEMBLOCK TST_NATURAL,          OP_BLOCKREF         )
+>   _OP_DEF(opexe_2, "block-set!",                     1,  1,       T_MEMBLOCK TST_NATURAL TST_CHAR, OP_BLOCKSET         )
+|   _OP_DEF(opexe_3, "not",                            1,  1,       TST_NONE,                        OP_NOT              )
+
+     We add the predicate along the other predicates:
+
+|   _OP_DEF(opexe_3, "vector?",                        1,  1,       TST_ANY,                         OP_VECTORP          )
+>   _OP_DEF(opexe_3, "block?",                         1,  1,       TST_ANY,                         OP_BLOCKP           )
+|   _OP_DEF(opexe_3, "eq?",                            2,  2,       TST_ANY,                         OP_EQ               )
+
+     All that remains is to write the actual processing in opexe_2, right
+     after OP_VECSET.
+
+>     case OP_MKBLOCK: { /* make-block */
+>          int fill=0;
+>          int len;
+>
+>          if(!isnumber(car(sc->args))) {
+>               Error_1(sc,"make-block: not a number:",car(sc->args));
+>          }
+>          len=ivalue(car(sc->args));
+>          if(len<=0) {
+>               Error_1(sc,"make-block: not positive:",car(sc->args));
+>          }
+>
+>          if(cdr(sc->args)!=sc->NIL) {
+>               if(!isnumber(cadr(sc->args)) || ivalue(cadr(sc->args))<0) {
+>                    Error_1(sc,"make-block: not a positive number:",cadr(sc->args));
+>               }
+>               fill=charvalue(cadr(sc->args))%255;
+>          }
+>          s_return(sc,mk_memblock(sc,len,(char)fill));
+>     }
+>
+>     case OP_BLOCKLEN:  /* block-length */
+>          if(!ismemblock(car(sc->args))) {
+>               Error_1(sc,"block-length: not a memory block:",car(sc->args));
+>          }
+>          s_return(sc,mk_integer(sc,keynum(car(sc->args))));
+>
+>     case OP_BLOCKREF: { /* block-ref */
+>          char *str;
+>          int index;
+>
+>          if(!ismemblock(car(sc->args))) {
+>               Error_1(sc,"block-ref: not a memory block:",car(sc->args));
+>          }
+>          str=strvalue(car(sc->args));
+>
+>          if(cdr(sc->args)==sc->NIL) {
+>               Error_0(sc,"block-ref: needs two arguments");
+>          }
+>          if(!isnumber(cadr(sc->args))) {
+>               Error_1(sc,"block-ref: not a number:",cadr(sc->args));
+>          }
+>          index=ivalue(cadr(sc->args));
+>
+>          if(index<0 || index>=keynum(car(sc->args))) {
+>               Error_1(sc,"block-ref: out of bounds:",cadr(sc->args));
+>          }
+>
+>          s_return(sc,mk_integer(sc,str[index]));
+>     }
+>
+>     case OP_BLOCKSET: { /* block-set! */
+>          char *str;
+>          int index;
+>          int c;
+>
+>          if(!ismemblock(car(sc->args))) {
+>               Error_1(sc,"block-set!: not a memory block:",car(sc->args));
+>          }
+>          if(isimmutable(car(sc->args))) {
+>               Error_1(sc,"block-set!: unable to alter immutable memory block:",car(sc->args));
+>          }
+>          str=strvalue(car(sc->args));
+>
+>          if(cdr(sc->args)==sc->NIL) {
+>               Error_0(sc,"block-set!: needs three arguments");
+>          }
+>          if(!isnumber(cadr(sc->args))) {
+>               Error_1(sc,"block-set!: not a number:",cadr(sc->args));
+>          }
+>          index=ivalue(cadr(sc->args));
+>          if(index<0 || index>=keynum(car(sc->args))) {
+>               Error_1(sc,"block-set!: out of bounds:",cadr(sc->args));
+>          }
+>
+>          if(cddr(sc->args)==sc->NIL) {
+>               Error_0(sc,"block-set!: needs three arguments");
+>          }
+>          if(!isinteger(caddr(sc->args))) {
+>               Error_1(sc,"block-set!: not an integer:",caddr(sc->args));
+>          }
+>          c=ivalue(caddr(sc->args))%255;
+>
+>          str[index]=(char)c;
+>          s_return(sc,car(sc->args));
+>     }
+
+     Same for the predicate in opexe_3.
+
+|     case OP_VECTORP:     /* vector? */
+|          s_retbool(isvector(car(sc->args)));
+>     case OP_BLOCKP:     /* block? */
+>          s_retbool(ismemblock(car(sc->args)));
diff --git a/plug-ins/script-fu/tinyscheme/opdefines.h b/plug-ins/script-fu/tinyscheme/opdefines.h
new file mode 100644
index 0000000..ceb4d0e
--- /dev/null
+++ b/plug-ins/script-fu/tinyscheme/opdefines.h
@@ -0,0 +1,195 @@
+    _OP_DEF(opexe_0, "load",                           1,  1,       TST_STRING,                      OP_LOAD             )
+    _OP_DEF(opexe_0, 0,                                0,  0,       0,                               OP_T0LVL            )
+    _OP_DEF(opexe_0, 0,                                0,  0,       0,                               OP_T1LVL            )
+    _OP_DEF(opexe_0, 0,                                0,  0,       0,                               OP_READ_INTERNAL    )
+    _OP_DEF(opexe_0, "gensym",                         0,  0,       0,                               OP_GENSYM           )
+    _OP_DEF(opexe_0, 0,                                0,  0,       0,                               OP_VALUEPRINT       )
+    _OP_DEF(opexe_0, 0,                                0,  0,       0,                               OP_EVAL             )
+#if USE_TRACING
+    _OP_DEF(opexe_0, 0,                                0,  0,       0,                               OP_REAL_EVAL        )
+#endif
+    _OP_DEF(opexe_0, 0,                                0,  0,       0,                               OP_E0ARGS           )
+    _OP_DEF(opexe_0, 0,                                0,  0,       0,                               OP_E1ARGS           )
+    _OP_DEF(opexe_0, 0,                                0,  0,       0,                               OP_APPLY            )
+#if USE_TRACING
+    _OP_DEF(opexe_0, 0,                                0,  0,       0,                               OP_REAL_APPLY       )
+    _OP_DEF(opexe_0, "tracing",                        1,  1,       TST_NATURAL,                     OP_TRACING          )
+#endif
+    _OP_DEF(opexe_0, 0,                                0,  0,       0,                               OP_DOMACRO          )
+    _OP_DEF(opexe_0, 0,                                0,  0,       0,                               OP_LAMBDA           )
+    _OP_DEF(opexe_0, 0,                                0,  0,       0,                               OP_LAMBDA1          )
+    _OP_DEF(opexe_0, "make-closure",                   1,  2,       TST_PAIR TST_ENVIRONMENT,        OP_MKCLOSURE        )
+    _OP_DEF(opexe_0, 0,                                0,  0,       0,                               OP_QUOTE            )
+    _OP_DEF(opexe_0, 0,                                0,  0,       0,                               OP_DEF0             )
+    _OP_DEF(opexe_0, 0,                                0,  0,       0,                               OP_DEF1             )
+    _OP_DEF(opexe_0, "defined?",                       1,  2,       TST_SYMBOL TST_ENVIRONMENT,      OP_DEFP             )
+    _OP_DEF(opexe_0, 0,                                0,  0,       0,                               OP_BEGIN            )
+    _OP_DEF(opexe_0, 0,                                0,  0,       0,                               OP_IF0              )
+    _OP_DEF(opexe_0, 0,                                0,  0,       0,                               OP_IF1              )
+    _OP_DEF(opexe_0, 0,                                0,  0,       0,                               OP_SET0             )
+    _OP_DEF(opexe_0, 0,                                0,  0,       0,                               OP_SET1             )
+    _OP_DEF(opexe_0, 0,                                0,  0,       0,                               OP_LET0             )
+    _OP_DEF(opexe_0, 0,                                0,  0,       0,                               OP_LET1             )
+    _OP_DEF(opexe_0, 0,                                0,  0,       0,                               OP_LET2             )
+    _OP_DEF(opexe_0, 0,                                0,  0,       0,                               OP_LET0AST          )
+    _OP_DEF(opexe_0, 0,                                0,  0,       0,                               OP_LET1AST          )
+    _OP_DEF(opexe_0, 0,                                0,  0,       0,                               OP_LET2AST          )
+    _OP_DEF(opexe_1, 0,                                0,  0,       0,                               OP_LET0REC          )
+    _OP_DEF(opexe_1, 0,                                0,  0,       0,                               OP_LET1REC          )
+    _OP_DEF(opexe_1, 0,                                0,  0,       0,                               OP_LET2REC          )
+    _OP_DEF(opexe_1, 0,                                0,  0,       0,                               OP_COND0            )
+    _OP_DEF(opexe_1, 0,                                0,  0,       0,                               OP_COND1            )
+    _OP_DEF(opexe_1, 0,                                0,  0,       0,                               OP_DELAY            )
+    _OP_DEF(opexe_1, 0,                                0,  0,       0,                               OP_AND0             )
+    _OP_DEF(opexe_1, 0,                                0,  0,       0,                               OP_AND1             )
+    _OP_DEF(opexe_1, 0,                                0,  0,       0,                               OP_OR0              )
+    _OP_DEF(opexe_1, 0,                                0,  0,       0,                               OP_OR1              )
+    _OP_DEF(opexe_1, 0,                                0,  0,       0,                               OP_C0STREAM         )
+    _OP_DEF(opexe_1, 0,                                0,  0,       0,                               OP_C1STREAM         )
+    _OP_DEF(opexe_1, 0,                                0,  0,       0,                               OP_MACRO0           )
+    _OP_DEF(opexe_1, 0,                                0,  0,       0,                               OP_MACRO1           )
+    _OP_DEF(opexe_1, 0,                                0,  0,       0,                               OP_CASE0            )
+    _OP_DEF(opexe_1, 0,                                0,  0,       0,                               OP_CASE1            )
+    _OP_DEF(opexe_1, 0,                                0,  0,       0,                               OP_CASE2            )
+    _OP_DEF(opexe_1, "eval",                           1,  2,       TST_ANY TST_ENVIRONMENT,         OP_PEVAL            )
+    _OP_DEF(opexe_1, "apply",                          1,  INF_ARG, TST_NONE,                        OP_PAPPLY           )
+    _OP_DEF(opexe_1, "call-with-current-continuation", 1,  1,       TST_NONE,                        OP_CONTINUATION     )
+#if USE_MATH
+    _OP_DEF(opexe_2, "inexact->exact",                 1,  1,       TST_NUMBER,                      OP_INEX2EX          )
+    _OP_DEF(opexe_2, "exp",                            1,  1,       TST_NUMBER,                      OP_EXP              )
+    _OP_DEF(opexe_2, "log",                            1,  1,       TST_NUMBER,                      OP_LOG              )
+    _OP_DEF(opexe_2, "sin",                            1,  1,       TST_NUMBER,                      OP_SIN              )
+    _OP_DEF(opexe_2, "cos",                            1,  1,       TST_NUMBER,                      OP_COS              )
+    _OP_DEF(opexe_2, "tan",                            1,  1,       TST_NUMBER,                      OP_TAN              )
+    _OP_DEF(opexe_2, "asin",                           1,  1,       TST_NUMBER,                      OP_ASIN             )
+    _OP_DEF(opexe_2, "acos",                           1,  1,       TST_NUMBER,                      OP_ACOS             )
+    _OP_DEF(opexe_2, "atan",                           1,  2,       TST_NUMBER,                      OP_ATAN             )
+    _OP_DEF(opexe_2, "sqrt",                           1,  1,       TST_NUMBER,                      OP_SQRT             )
+    _OP_DEF(opexe_2, "expt",                           2,  2,       TST_NUMBER,                      OP_EXPT             )
+    _OP_DEF(opexe_2, "floor",                          1,  1,       TST_NUMBER,                      OP_FLOOR            )
+    _OP_DEF(opexe_2, "ceiling",                        1,  1,       TST_NUMBER,                      OP_CEILING          )
+    _OP_DEF(opexe_2, "truncate",                       1,  1,       TST_NUMBER,                      OP_TRUNCATE         )
+    _OP_DEF(opexe_2, "round",                          1,  1,       TST_NUMBER,                      OP_ROUND            )
+#endif
+    _OP_DEF(opexe_2, "+",                              0,  INF_ARG, TST_NUMBER,                      OP_ADD              )
+    _OP_DEF(opexe_2, "-",                              1,  INF_ARG, TST_NUMBER,                      OP_SUB              )
+    _OP_DEF(opexe_2, "*",                              0,  INF_ARG, TST_NUMBER,                      OP_MUL              )
+    _OP_DEF(opexe_2, "/",                              1,  INF_ARG, TST_NUMBER,                      OP_DIV              )
+    _OP_DEF(opexe_2, "quotient",                       1,  INF_ARG, TST_INTEGER,                     OP_INTDIV           )
+    _OP_DEF(opexe_2, "remainder",                      2,  2,       TST_INTEGER,                     OP_REM              )
+    _OP_DEF(opexe_2, "modulo",                         2,  2,       TST_INTEGER,                     OP_MOD              )
+    _OP_DEF(opexe_2, "car",                            1,  1,       TST_PAIR,                        OP_CAR              )
+    _OP_DEF(opexe_2, "cdr",                            1,  1,       TST_PAIR,                        OP_CDR              )
+    _OP_DEF(opexe_2, "cons",                           2,  2,       TST_NONE,                        OP_CONS             )
+    _OP_DEF(opexe_2, "set-car!",                       2,  2,       TST_PAIR TST_ANY,                OP_SETCAR           )
+    _OP_DEF(opexe_2, "set-cdr!",                       2,  2,       TST_PAIR TST_ANY,                OP_SETCDR           )
+    _OP_DEF(opexe_2, "char->integer",                  1,  1,       TST_CHAR,                        OP_CHAR2INT         )
+    _OP_DEF(opexe_2, "integer->char",                  1,  1,       TST_NATURAL,                     OP_INT2CHAR         )
+    _OP_DEF(opexe_2, "char-upcase",                    1,  1,       TST_CHAR,                        OP_CHARUPCASE       )
+    _OP_DEF(opexe_2, "char-downcase",                  1,  1,       TST_CHAR,                        OP_CHARDNCASE       )
+    _OP_DEF(opexe_2, "symbol->string",                 1,  1,       TST_SYMBOL,                      OP_SYM2STR          )
+    _OP_DEF(opexe_2, "atom->string",                   1,  2,       TST_ANY TST_NATURAL,             OP_ATOM2STR         )
+    _OP_DEF(opexe_2, "string->symbol",                 1,  1,       TST_STRING,                      OP_STR2SYM          )
+    _OP_DEF(opexe_2, "string->atom",                   1,  2,       TST_STRING TST_NATURAL,          OP_STR2ATOM         )
+    _OP_DEF(opexe_2, "make-string",                    1,  2,       TST_NATURAL TST_CHAR,            OP_MKSTRING         )
+    _OP_DEF(opexe_2, "string-length",                  1,  1,       TST_STRING,                      OP_STRLEN           )
+    _OP_DEF(opexe_2, "string-ref",                     2,  2,       TST_STRING TST_NATURAL,          OP_STRREF           )
+    _OP_DEF(opexe_2, "string-set!",                    3,  3,       TST_STRING TST_NATURAL TST_CHAR, OP_STRSET           )
+    _OP_DEF(opexe_2, "string-append",                  0,  INF_ARG, TST_STRING,                      OP_STRAPPEND        )
+    _OP_DEF(opexe_2, "substring",                      2,  3,       TST_STRING TST_NATURAL,          OP_SUBSTR           )
+    _OP_DEF(opexe_2, "vector",                         0,  INF_ARG, TST_NONE,                        OP_VECTOR           )
+    _OP_DEF(opexe_2, "make-vector",                    1,  2,       TST_NATURAL TST_ANY,             OP_MKVECTOR         )
+    _OP_DEF(opexe_2, "vector-length",                  1,  1,       TST_VECTOR,                      OP_VECLEN           )
+    _OP_DEF(opexe_2, "vector-ref",                     2,  2,       TST_VECTOR TST_NATURAL,          OP_VECREF           )
+    _OP_DEF(opexe_2, "vector-set!",                    3,  3,       TST_VECTOR TST_NATURAL TST_ANY,  OP_VECSET           )
+    _OP_DEF(opexe_3, "not",                            1,  1,       TST_NONE,                        OP_NOT              )
+    _OP_DEF(opexe_3, "boolean?",                       1,  1,       TST_NONE,                        OP_BOOLP            )
+    _OP_DEF(opexe_3, "eof-object?",                    1,  1,       TST_NONE,                        OP_EOFOBJP          )
+    _OP_DEF(opexe_3, "null?",                          1,  1,       TST_NONE,                        OP_NULLP            )
+    _OP_DEF(opexe_3, "=",                              2,  INF_ARG, TST_NUMBER,                      OP_NUMEQ            )
+    _OP_DEF(opexe_3, "<",                              2,  INF_ARG, TST_NUMBER,                      OP_LESS             )
+    _OP_DEF(opexe_3, ">",                              2,  INF_ARG, TST_NUMBER,                      OP_GRE              )
+    _OP_DEF(opexe_3, "<=",                             2,  INF_ARG, TST_NUMBER,                      OP_LEQ              )
+    _OP_DEF(opexe_3, ">=",                             2,  INF_ARG, TST_NUMBER,                      OP_GEQ              )
+    _OP_DEF(opexe_3, "symbol?",                        1,  1,       TST_ANY,                         OP_SYMBOLP          )
+    _OP_DEF(opexe_3, "number?",                        1,  1,       TST_ANY,                         OP_NUMBERP          )
+    _OP_DEF(opexe_3, "string?",                        1,  1,       TST_ANY,                         OP_STRINGP          )
+    _OP_DEF(opexe_3, "integer?",                       1,  1,       TST_ANY,                         OP_INTEGERP         )
+    _OP_DEF(opexe_3, "real?",                          1,  1,       TST_ANY,                         OP_REALP            )
+    _OP_DEF(opexe_3, "char?",                          1,  1,       TST_ANY,                         OP_CHARP            )
+#if USE_CHAR_CLASSIFIERS
+    _OP_DEF(opexe_3, "char-alphabetic?",               1,  1,       TST_CHAR,                        OP_CHARAP           )
+    _OP_DEF(opexe_3, "char-numeric?",                  1,  1,       TST_CHAR,                        OP_CHARNP           )
+    _OP_DEF(opexe_3, "char-whitespace?",               1,  1,       TST_CHAR,                        OP_CHARWP           )
+    _OP_DEF(opexe_3, "char-upper-case?",               1,  1,       TST_CHAR,                        OP_CHARUP           )
+    _OP_DEF(opexe_3, "char-lower-case?",               1,  1,       TST_CHAR,                        OP_CHARLP           )
+#endif
+    _OP_DEF(opexe_3, "port?",                          1,  1,       TST_ANY,                         OP_PORTP            )
+    _OP_DEF(opexe_3, "input-port?",                    1,  1,       TST_ANY,                         OP_INPORTP          )
+    _OP_DEF(opexe_3, "output-port?",                   1,  1,       TST_ANY,                         OP_OUTPORTP         )
+    _OP_DEF(opexe_3, "procedure?",                     1,  1,       TST_ANY,                         OP_PROCP            )
+    _OP_DEF(opexe_3, "pair?",                          1,  1,       TST_ANY,                         OP_PAIRP            )
+    _OP_DEF(opexe_3, "list?",                          1,  1,       TST_ANY,                         OP_LISTP            )
+    _OP_DEF(opexe_3, "environment?",                   1,  1,       TST_ANY,                         OP_ENVP             )
+    _OP_DEF(opexe_3, "vector?",                        1,  1,       TST_ANY,                         OP_VECTORP          )
+    _OP_DEF(opexe_3, "eq?",                            2,  2,       TST_ANY,                         OP_EQ               )
+    _OP_DEF(opexe_3, "eqv?",                           2,  2,       TST_ANY,                         OP_EQV              )
+    _OP_DEF(opexe_4, "force",                          1,  1,       TST_ANY,                         OP_FORCE            )
+    _OP_DEF(opexe_4, 0,                                0,  0,       0,                               OP_SAVE_FORCED      )
+    _OP_DEF(opexe_4, "write",                          1,  2,       TST_ANY TST_OUTPORT,             OP_WRITE            )
+    _OP_DEF(opexe_4, "write-char",                     1,  2,       TST_CHAR TST_OUTPORT,            OP_WRITE_CHAR       )
+    _OP_DEF(opexe_4, "display",                        1,  2,       TST_ANY TST_OUTPORT,             OP_DISPLAY          )
+    _OP_DEF(opexe_4, "newline",                        0,  1,       TST_OUTPORT,                     OP_NEWLINE          )
+    _OP_DEF(opexe_4, "error",                          1,  INF_ARG, TST_NONE,                        OP_ERR0             )
+    _OP_DEF(opexe_4, 0,                                0,  0,       0,                               OP_ERR1             )
+    _OP_DEF(opexe_4, "reverse",                        1,  1,       TST_LIST,                        OP_REVERSE          )
+    _OP_DEF(opexe_4, "list*",                          1,  INF_ARG, TST_NONE,                        OP_LIST_STAR        )
+    _OP_DEF(opexe_4, "append",                         0,  INF_ARG, TST_NONE,                        OP_APPEND           )
+#if USE_PLIST
+    _OP_DEF(opexe_4, "put",                            3,  3,       TST_NONE,                        OP_PUT              )
+    _OP_DEF(opexe_4, "get",                            2,  2,       TST_NONE,                        OP_GET              )
+#endif
+    _OP_DEF(opexe_4, "quit",                           0,  1,       TST_NUMBER,                      OP_QUIT             )
+    _OP_DEF(opexe_4, "gc",                             0,  0,       0,                               OP_GC               )
+    _OP_DEF(opexe_4, "gc-verbose",                     0,  1,       TST_NONE,                        OP_GCVERB           )
+    _OP_DEF(opexe_4, "new-segment",                    0,  1,       TST_NUMBER,                      OP_NEWSEGMENT       )
+    _OP_DEF(opexe_4, "oblist",                         0,  0,       0,                               OP_OBLIST           )
+    _OP_DEF(opexe_4, "current-input-port",             0,  0,       0,                               OP_CURR_INPORT      )
+    _OP_DEF(opexe_4, "current-output-port",            0,  0,       0,                               OP_CURR_OUTPORT     )
+    _OP_DEF(opexe_4, "open-input-file",                1,  1,       TST_STRING,                      OP_OPEN_INFILE      )
+    _OP_DEF(opexe_4, "open-output-file",               1,  1,       TST_STRING,                      OP_OPEN_OUTFILE     )
+    _OP_DEF(opexe_4, "open-input-output-file",         1,  1,       TST_STRING,                      OP_OPEN_INOUTFILE   )
+#if USE_STRING_PORTS
+    _OP_DEF(opexe_4, "open-input-string",              1,  1,       TST_STRING,                      OP_OPEN_INSTRING    )
+    _OP_DEF(opexe_4, "open-input-output-string",       1,  1,       TST_STRING,                      OP_OPEN_INOUTSTRING )
+    _OP_DEF(opexe_4, "open-output-string",             0,  1,       TST_STRING,                      OP_OPEN_OUTSTRING   )
+    _OP_DEF(opexe_4, "get-output-string",              1,  1,       TST_OUTPORT,                     OP_GET_OUTSTRING    )
+#endif
+    _OP_DEF(opexe_4, "close-input-port",               1,  1,       TST_INPORT,                      OP_CLOSE_INPORT     )
+    _OP_DEF(opexe_4, "close-output-port",              1,  1,       TST_OUTPORT,                     OP_CLOSE_OUTPORT    )
+    _OP_DEF(opexe_4, "interaction-environment",        0,  0,       0,                               OP_INT_ENV          )
+    _OP_DEF(opexe_4, "current-environment",            0,  0,       0,                               OP_CURR_ENV         )
+    _OP_DEF(opexe_5, "read",                           0,  1,       TST_INPORT,                      OP_READ             )
+    _OP_DEF(opexe_5, "read-char",                      0,  1,       TST_INPORT,                      OP_READ_CHAR        )
+    _OP_DEF(opexe_5, "peek-char",                      0,  1,       TST_INPORT,                      OP_PEEK_CHAR        )
+    _OP_DEF(opexe_5, "char-ready?",                    0,  1,       TST_INPORT,                      OP_CHAR_READY       )
+    _OP_DEF(opexe_5, "set-input-port",                 1,  1,       TST_INPORT,                      OP_SET_INPORT       )
+    _OP_DEF(opexe_5, "set-output-port",                1,  1,       TST_OUTPORT,                     OP_SET_OUTPORT      )
+    _OP_DEF(opexe_5, 0,                                0,  0,       0,                               OP_RDSEXPR          )
+    _OP_DEF(opexe_5, 0,                                0,  0,       0,                               OP_RDLIST           )
+    _OP_DEF(opexe_5, 0,                                0,  0,       0,                               OP_RDDOT            )
+    _OP_DEF(opexe_5, 0,                                0,  0,       0,                               OP_RDQUOTE          )
+    _OP_DEF(opexe_5, 0,                                0,  0,       0,                               OP_RDQQUOTE         )
+    _OP_DEF(opexe_5, 0,                                0,  0,       0,                               OP_RDQQUOTEVEC      )
+    _OP_DEF(opexe_5, 0,                                0,  0,       0,                               OP_RDUNQUOTE        )
+    _OP_DEF(opexe_5, 0,                                0,  0,       0,                               OP_RDUQTSP          )
+    _OP_DEF(opexe_5, 0,                                0,  0,       0,                               OP_RDVEC            )
+    _OP_DEF(opexe_5, 0,                                0,  0,       0,                               OP_P0LIST           )
+    _OP_DEF(opexe_5, 0,                                0,  0,       0,                               OP_P1LIST           )
+    _OP_DEF(opexe_5, 0,                                0,  0,       0,                               OP_PVECFROM         )
+    _OP_DEF(opexe_6, "length",                         1,  1,       TST_LIST,                        OP_LIST_LENGTH      )
+    _OP_DEF(opexe_6, "assq",                           2,  2,       TST_NONE,                        OP_ASSQ             )
+    _OP_DEF(opexe_6, "get-closure-code",               1,  1,       TST_NONE,                        OP_GET_CLOSURE      )
+    _OP_DEF(opexe_6, "closure?",                       1,  1,       TST_NONE,                        OP_CLOSUREP         )
+    _OP_DEF(opexe_6, "macro?",                         1,  1,       TST_NONE,                        OP_MACROP           )
+#undef _OP_DEF
diff --git a/plug-ins/script-fu/tinyscheme/scheme-private.h b/plug-ins/script-fu/tinyscheme/scheme-private.h
new file mode 100644
index 0000000..89840c2
--- /dev/null
+++ b/plug-ins/script-fu/tinyscheme/scheme-private.h
@@ -0,0 +1,227 @@
+/* scheme-private.h */
+
+#ifndef _SCHEME_PRIVATE_H
+#define _SCHEME_PRIVATE_H
+
+#include "scheme.h"
+/*------------------ Ugly internals -----------------------------------*/
+/*------------------ Of interest only to FFI users --------------------*/
+
+enum scheme_port_kind {
+  port_free=0,
+  port_file=1,
+  port_string=2,
+  port_srfi6=4,
+  port_input=16,
+  port_output=32,
+  port_saw_EOF=64
+};
+
+typedef struct port {
+  unsigned char kind;
+  union {
+    struct {
+      FILE *file;
+      int closeit;
+#if SHOW_ERROR_LINE
+      int curr_line;
+      char *filename;
+#endif
+    } stdio;
+    struct {
+      char *start;
+      char *past_the_end;
+      char *curr;
+    } string;
+  } rep;
+} port;
+
+/* cell structure */
+struct cell {
+  unsigned int _flag;
+  union {
+    struct {
+      char   *_svalue;
+      int   _length;
+    } _string;
+    num _number;
+    port *_port;
+    foreign_func _ff;
+    struct {
+      struct cell *_car;
+      struct cell *_cdr;
+    } _cons;
+  } _object;
+};
+
+struct scheme {
+/* arrays for segments */
+func_alloc malloc;
+func_dealloc free;
+
+/* return code */
+int retcode;
+int tracing;
+
+
+#ifndef CELL_SEGSIZE
+#define CELL_SEGSIZE    25000 /* # of cells in one segment */
+#endif
+#ifndef CELL_NSEGMENT
+#define CELL_NSEGMENT   50    /* # of segments for cells */
+#endif
+char *alloc_seg[CELL_NSEGMENT];
+pointer cell_seg[CELL_NSEGMENT];
+int     last_cell_seg;
+
+/* We use 5 registers. */
+pointer args;            /* register for arguments of function */
+pointer envir;           /* stack register for current environment */
+pointer code;            /* register for current code */
+pointer dump;            /* stack register for next evaluation */
+pointer foreign_error;   /* used for foreign functions to signal an error */
+
+int interactive_repl;    /* are we in an interactive REPL? */
+int print_output;        /* set to 1 to print results and error messages */
+
+struct cell _sink;
+pointer sink;            /* when mem. alloc. fails */
+struct cell _NIL;
+pointer NIL;             /* special cell representing empty cell */
+struct cell _HASHT;
+pointer T;               /* special cell representing #t */
+struct cell _HASHF;
+pointer F;               /* special cell representing #f */
+struct cell _EOF_OBJ;
+pointer EOF_OBJ;         /* special cell representing end-of-file object */
+pointer oblist;          /* pointer to symbol table */
+pointer global_env;      /* pointer to global environment */
+
+pointer c_nest;          /* stack for nested calls from C */
+
+/* global pointers to special symbols */
+pointer LAMBDA;          /* pointer to syntax lambda */
+pointer QUOTE;           /* pointer to syntax quote */
+
+pointer QQUOTE;          /* pointer to symbol quasiquote */
+pointer UNQUOTE;         /* pointer to symbol unquote */
+pointer UNQUOTESP;       /* pointer to symbol unquote-splicing */
+pointer FEED_TO;         /* => */
+pointer COLON_HOOK;      /* *colon-hook* */
+pointer ERROR_HOOK;      /* *error-hook* */
+pointer SHARP_HOOK;      /* *sharp-hook* */
+pointer COMPILE_HOOK;    /* *compile-hook* */
+
+pointer free_cell;       /* pointer to top of free cells */
+long    fcells;          /* # of free cells */
+
+pointer inport;
+pointer outport;
+pointer save_inport;
+pointer loadport;
+
+#ifndef MAXFIL
+#define MAXFIL 64
+#endif
+port load_stack[MAXFIL]; /* Stack of open files for port -1 (LOADing) */
+int nesting_stack[MAXFIL];
+int file_i;
+int nesting;
+
+char    gc_verbose;      /* if gc_verbose is not zero, print gc status */
+char    no_memory;       /* Whether mem. alloc. has failed */
+
+#ifndef LINESIZE
+#define LINESIZE 1024
+#endif
+char    linebuff[LINESIZE];
+#ifndef STRBUFFSIZE
+#define STRBUFFSIZE 1024
+#endif
+char    strbuff[STRBUFFSIZE];
+
+FILE *tmpfp;
+int tok;
+int print_flag;
+pointer value;
+int op;
+
+void *ext_data;      /* For the benefit of foreign functions */
+long gensym_cnt;
+
+struct scheme_interface *vptr;
+void *dump_base;     /* pointer to base of allocated dump stack */
+int dump_size;       /* number of frames allocated for dump stack */
+
+gunichar backchar[2];
+int bc_flag;
+};
+
+/* operator code */
+enum scheme_opcodes {
+#define _OP_DEF(A,B,C,D,E,OP) OP,
+#include "opdefines.h"
+  OP_MAXDEFINED
+};
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define cons(sc,a,b) _cons(sc,a,b,0)
+#define immutable_cons(sc,a,b) _cons(sc,a,b,1)
+
+int is_string(pointer p);
+char *string_value(pointer p);
+int is_number(pointer p);
+num nvalue(pointer p);
+long ivalue(pointer p);
+double rvalue(pointer p);
+int is_integer(pointer p);
+int is_real(pointer p);
+int is_character(pointer p);
+int string_length(pointer p);
+gunichar charvalue(pointer p);
+int is_vector(pointer p);
+
+int is_port(pointer p);
+int is_inport(pointer p);
+int is_outport(pointer p);
+
+int is_pair(pointer p);
+pointer pair_car(pointer p);
+pointer pair_cdr(pointer p);
+pointer set_car(pointer p, pointer q);
+pointer set_cdr(pointer p, pointer q);
+
+int is_symbol(pointer p);
+char *symname(pointer p);
+char *symkey(pointer p);
+int hasprop(pointer p);
+
+int is_syntax(pointer p);
+int is_proc(pointer p);
+int is_foreign(pointer p);
+char *syntaxname(pointer p);
+int is_closure(pointer p);
+int is_macro(pointer p);
+pointer closure_code(pointer p);
+pointer closure_env(pointer p);
+
+int is_continuation(pointer p);
+int is_promise(pointer p);
+int is_environment(pointer p);
+int is_immutable(pointer p);
+void setimmutable(pointer p);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+
+/*
+Local variables:
+c-file-style: "k&r"
+End:
+*/
diff --git a/plug-ins/script-fu/tinyscheme/scheme.c b/plug-ins/script-fu/tinyscheme/scheme.c
new file mode 100644
index 0000000..ff73801
--- /dev/null
+++ b/plug-ins/script-fu/tinyscheme/scheme.c
@@ -0,0 +1,5352 @@
+/* T I N Y S C H E M E    1 . 4 1
+ *   Dimitrios Souflis (dsouflis@acm.org)
+ *   Based on MiniScheme (original credits follow)
+ * (MINISCM)               coded by Atsushi Moriwaki (11/5/1989)
+ * (MINISCM)           E-MAIL :  moriwaki@kurims.kurims.kyoto-u.ac.jp
+ * (MINISCM) This version has been modified by R.C. Secrist.
+ * (MINISCM)
+ * (MINISCM) Mini-Scheme is now maintained by Akira KIDA.
+ * (MINISCM)
+ * (MINISCM) This is a revised and modified version by Akira KIDA.
+ * (MINISCM)   current version is 0.85k4 (15 May 1994)
+ *
+ */
+
+/* ******** READ THE FOLLOWING BEFORE MODIFYING THIS FILE! ******** */
+/* This copy of TinyScheme has been modified to support UTF-8 coded */
+/* character strings. As a result, the length of a string in bytes  */
+/* may not be the same as the length of a string in characters. You */
+/* must keep this in mind at all times while making any changes to  */
+/* the routines in this file and when adding new features.          */
+/*                                                                  */
+/* UTF-8 modifications made by Kevin Cozens (kcozens@interlog.com)  */
+/* **************************************************************** */
+
+#include "config.h"
+
+#define _SCHEME_SOURCE
+#if HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+#if USE_DL
+# include "dynload.h"
+#endif
+#if USE_MATH
+# include <math.h>
+#endif
+
+#include <limits.h>
+#include <float.h>
+#include <ctype.h>
+#include <stdint.h>
+#include <string.h>
+
+#include "../script-fu-intl.h"
+
+#include "scheme-private.h"
+
+#if !STANDALONE
+static ts_output_func   ts_output_handler = NULL;
+static gpointer         ts_output_data = NULL;
+
+void
+ts_register_output_func (ts_output_func  func,
+                         gpointer        user_data)
+{
+  ts_output_handler = func;
+  ts_output_data    = user_data;
+}
+
+/* len is length of 'string' in bytes or -1 for null terminated strings */
+void
+ts_output_string (TsOutputType  type,
+                  const char   *string,
+                  int           len)
+{
+  if (len < 0)
+    len = strlen (string);
+
+  if (ts_output_handler && len > 0)
+    (* ts_output_handler) (type, string, len, ts_output_data);
+}
+#endif
+
+/* Used for documentation purposes, to signal functions in 'interface' */
+#define INTERFACE
+
+#define TOK_EOF     (-1)
+#define TOK_LPAREN  0
+#define TOK_RPAREN  1
+#define TOK_DOT     2
+#define TOK_ATOM    3
+#define TOK_QUOTE   4
+#define TOK_COMMENT 5
+#define TOK_DQUOTE  6
+#define TOK_BQUOTE  7
+#define TOK_COMMA   8
+#define TOK_ATMARK  9
+#define TOK_SHARP   10
+#define TOK_SHARP_CONST 11
+#define TOK_VEC     12
+#define TOK_USCORE  13
+
+#define BACKQUOTE '`'
+#define DELIMITERS  "()\";\f\t\v\n\r "
+
+/*
+ *  Basic memory allocation units
+ */
+
+#define banner "TinyScheme 1.41 (with UTF-8 support)"
+
+#include <string.h>
+#include <stdlib.h>
+
+#define stricmp utf8_stricmp
+
+static int utf8_stricmp(const char *s1, const char *s2)
+{
+  char *s1a, *s2a;
+  int result;
+
+  s1a = g_utf8_casefold(s1, -1);
+  s2a = g_utf8_casefold(s2, -1);
+
+  result = g_utf8_collate(s1a, s2a);
+
+  g_free(s1a);
+  g_free(s2a);
+  return result;
+}
+
+#define min(a, b)  ((a) <= (b) ? (a) : (b))
+
+#if USE_STRLWR
+/*
+#error FIXME: Can't just use g_utf8_strdown since it allocates a new string
+#define strlwr(s)  g_utf8_strdown(s, -1)
+*/
+#else
+#define strlwr(s)  s
+#endif
+
+#ifndef prompt
+# define prompt "ts> "
+#endif
+
+#ifndef InitFile
+# define InitFile "init.scm"
+#endif
+
+#ifndef FIRST_CELLSEGS
+# define FIRST_CELLSEGS 3
+#endif
+
+enum scheme_types {
+  T_STRING=1,
+  T_NUMBER=2,
+  T_SYMBOL=3,
+  T_PROC=4,
+  T_PAIR=5,
+  T_CLOSURE=6,
+  T_CONTINUATION=7,
+  T_FOREIGN=8,
+  T_CHARACTER=9,
+  T_PORT=10,
+  T_VECTOR=11,
+  T_MACRO=12,
+  T_PROMISE=13,
+  T_ENVIRONMENT=14,
+  T_LAST_SYSTEM_TYPE=14
+};
+
+/* ADJ is enough slack to align cells in a TYPE_BITS-bit boundary */
+#define ADJ 32
+#define TYPE_BITS 5
+#define T_MASKTYPE      31    /* 0000000000011111 */
+#define T_SYNTAX      4096    /* 0001000000000000 */
+#define T_IMMUTABLE   8192    /* 0010000000000000 */
+#define T_ATOM       16384    /* 0100000000000000 */   /* only for gc */
+#define CLRATOM      49151    /* 1011111111111111 */   /* only for gc */
+#define MARK         32768    /* 1000000000000000 */
+#define UNMARK       32767    /* 0111111111111111 */
+
+static num num_add(num a, num b);
+static num num_mul(num a, num b);
+static num num_div(num a, num b);
+static num num_intdiv(num a, num b);
+static num num_sub(num a, num b);
+static num num_rem(num a, num b);
+static num num_mod(num a, num b);
+static int num_eq(num a, num b);
+static int num_gt(num a, num b);
+static int num_ge(num a, num b);
+static int num_lt(num a, num b);
+static int num_le(num a, num b);
+
+#if USE_MATH
+static double round_per_R5RS(double x);
+#endif
+static int is_zero_double(double x);
+static INLINE int num_is_integer(pointer p) {
+  return ((p)->_object._number.is_fixnum);
+}
+
+static num num_zero;
+static num num_one;
+
+/* macros for cell operations */
+#define typeflag(p)      ((p)->_flag)
+#define type(p)          (typeflag(p)&T_MASKTYPE)
+
+INTERFACE INLINE int is_string(pointer p)     { return (type(p)==T_STRING); }
+#define strvalue(p)      ((p)->_object._string._svalue)
+#define strlength(p)     ((p)->_object._string._length)
+
+INTERFACE static int is_list(scheme *sc, pointer a);
+INTERFACE INLINE int is_vector(pointer p)    { return (type(p)==T_VECTOR); }
+INTERFACE static void fill_vector(pointer vec, pointer obj);
+INTERFACE static pointer vector_elem(pointer vec, int ielem);
+INTERFACE static pointer set_vector_elem(pointer vec, int ielem, pointer a);
+INTERFACE INLINE int is_number(pointer p)    { return (type(p)==T_NUMBER); }
+INTERFACE INLINE int is_integer(pointer p) {
+  if (!is_number(p))
+      return 0;
+  if (num_is_integer(p) || (double)ivalue(p) == rvalue(p))
+      return 1;
+  return 0;
+}
+
+INTERFACE INLINE int is_real(pointer p) {
+  return is_number(p) && (!(p)->_object._number.is_fixnum);
+}
+
+INTERFACE INLINE int is_character(pointer p) { return (type(p)==T_CHARACTER); }
+INTERFACE INLINE int string_length(pointer p) { return strlength(p); }
+INTERFACE INLINE char *string_value(pointer p) { return strvalue(p); }
+INLINE num nvalue(pointer p)       { return ((p)->_object._number); }
+INTERFACE long ivalue(pointer p)      { return (num_is_integer(p)?(p)->_object._number.value.ivalue:(long)(p)->_object._number.value.rvalue); }
+INTERFACE double rvalue(pointer p)    { return (!num_is_integer(p)?(p)->_object._number.value.rvalue:(double)(p)->_object._number.value.ivalue); }
+#define ivalue_unchecked(p)       ((p)->_object._number.value.ivalue)
+#define rvalue_unchecked(p)       ((p)->_object._number.value.rvalue)
+#define set_num_integer(p)   (p)->_object._number.is_fixnum=1;
+#define set_num_real(p)      (p)->_object._number.is_fixnum=0;
+INTERFACE  gunichar charvalue(pointer p)  { return (gunichar)ivalue_unchecked(p); }
+
+INTERFACE INLINE int is_port(pointer p)     { return (type(p)==T_PORT); }
+INTERFACE INLINE int is_inport(pointer p)  { return is_port(p) && p->_object._port->kind & port_input; }
+INTERFACE INLINE int is_outport(pointer p) { return is_port(p) && p->_object._port->kind & port_output; }
+
+INTERFACE INLINE int is_pair(pointer p)     { return (type(p)==T_PAIR); }
+#define car(p)           ((p)->_object._cons._car)
+#define cdr(p)           ((p)->_object._cons._cdr)
+INTERFACE pointer pair_car(pointer p)   { return car(p); }
+INTERFACE pointer pair_cdr(pointer p)   { return cdr(p); }
+INTERFACE pointer set_car(pointer p, pointer q) { return car(p)=q; }
+INTERFACE pointer set_cdr(pointer p, pointer q) { return cdr(p)=q; }
+
+INTERFACE INLINE int is_symbol(pointer p)   { return (type(p)==T_SYMBOL); }
+INTERFACE INLINE char *symname(pointer p)   { return strvalue(car(p)); }
+#if USE_PLIST
+SCHEME_EXPORT INLINE int hasprop(pointer p)     { return (typeflag(p)&T_SYMBOL); }
+#define symprop(p)       cdr(p)
+#endif
+
+INTERFACE INLINE int is_syntax(pointer p)   { return (typeflag(p)&T_SYNTAX); }
+INTERFACE INLINE int is_proc(pointer p)     { return (type(p)==T_PROC); }
+INTERFACE INLINE int is_foreign(pointer p)  { return (type(p)==T_FOREIGN); }
+INTERFACE INLINE char *syntaxname(pointer p) { return strvalue(car(p)); }
+#define procnum(p)       ivalue(p)
+static const char *procname(pointer x);
+
+INTERFACE INLINE int is_closure(pointer p)  { return (type(p)==T_CLOSURE); }
+INTERFACE INLINE int is_macro(pointer p)    { return (type(p)==T_MACRO); }
+INTERFACE INLINE pointer closure_code(pointer p)   { return car(p); }
+INTERFACE INLINE pointer closure_env(pointer p)    { return cdr(p); }
+
+INTERFACE INLINE int is_continuation(pointer p)    { return (type(p)==T_CONTINUATION); }
+#define cont_dump(p)     cdr(p)
+
+/* To do: promise should be forced ONCE only */
+INTERFACE INLINE int is_promise(pointer p)  { return (type(p)==T_PROMISE); }
+
+INTERFACE INLINE int is_environment(pointer p) { return (type(p)==T_ENVIRONMENT); }
+#define setenvironment(p)    typeflag(p) = T_ENVIRONMENT
+
+#define is_atom(p)       (typeflag(p)&T_ATOM)
+#define setatom(p)       typeflag(p) |= T_ATOM
+#define clratom(p)       typeflag(p) &= CLRATOM
+
+#define is_mark(p)       (typeflag(p)&MARK)
+#define setmark(p)       typeflag(p) |= MARK
+#define clrmark(p)       typeflag(p) &= UNMARK
+
+INTERFACE INLINE int is_immutable(pointer p) { return (typeflag(p)&T_IMMUTABLE); }
+/*#define setimmutable(p)  typeflag(p) |= T_IMMUTABLE*/
+INTERFACE INLINE void setimmutable(pointer p) { typeflag(p) |= T_IMMUTABLE; }
+
+#define caar(p)          car(car(p))
+#define cadr(p)          car(cdr(p))
+#define cdar(p)          cdr(car(p))
+#define cddr(p)          cdr(cdr(p))
+#define cadar(p)         car(cdr(car(p)))
+#define caddr(p)         car(cdr(cdr(p)))
+#define cdaar(p)         cdr(car(car(p)))
+#define cadaar(p)        car(cdr(car(car(p))))
+#define cadddr(p)        car(cdr(cdr(cdr(p))))
+#define cddddr(p)        cdr(cdr(cdr(cdr(p))))
+
+#if USE_CHAR_CLASSIFIERS
+static INLINE int Cisalpha(gunichar c) { return g_unichar_isalpha(c); }
+static INLINE int Cisdigit(gunichar c) { return g_unichar_isdigit(c); }
+static INLINE int Cisspace(gunichar c) { return g_unichar_isspace(c); }
+static INLINE int Cisupper(gunichar c) { return g_unichar_isupper(c); }
+static INLINE int Cislower(gunichar c) { return g_unichar_islower(c); }
+#endif
+
+#if USE_ASCII_NAMES
+static const char *charnames[32]={
+ "nul",
+ "soh",
+ "stx",
+ "etx",
+ "eot",
+ "enq",
+ "ack",
+ "bel",
+ "bs",
+ "ht",
+ "lf",
+ "vt",
+ "ff",
+ "cr",
+ "so",
+ "si",
+ "dle",
+ "dc1",
+ "dc2",
+ "dc3",
+ "dc4",
+ "nak",
+ "syn",
+ "etb",
+ "can",
+ "em",
+ "sub",
+ "esc",
+ "fs",
+ "gs",
+ "rs",
+ "us"
+};
+
+static int is_ascii_name(const char *name, int *pc) {
+  int i;
+  for(i=0; i<32; i++) {
+     if(stricmp(name,charnames[i])==0) {
+          *pc=i;
+          return 1;
+     }
+  }
+  if(stricmp(name,"del")==0) {
+     *pc=127;
+     return 1;
+  }
+  return 0;
+}
+
+#endif
+
+/* Number of bytes expected AFTER lead byte of UTF-8 character. */
+static const char utf8_length[64] =
+{
+    1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* 0xc0-0xcf */
+    1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* 0xd0-0xdf */
+    2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, /* 0xe0-0xef */
+    3,3,3,3,3,3,3,3,4,4,4,4,5,5,0,0  /* 0xf0-0xff */
+};
+
+static int file_push(scheme *sc, const char *fname);
+static void file_pop(scheme *sc);
+static int file_interactive(scheme *sc);
+static INLINE int is_one_of(char *s, gunichar c);
+static int alloc_cellseg(scheme *sc, int n);
+static long binary_decode(const char *s);
+static INLINE pointer get_cell(scheme *sc, pointer a, pointer b);
+static pointer _get_cell(scheme *sc, pointer a, pointer b);
+static pointer reserve_cells(scheme *sc, int n);
+static pointer get_consecutive_cells(scheme *sc, int n);
+static pointer find_consecutive_cells(scheme *sc, int n);
+static void finalize_cell(scheme *sc, pointer a);
+static int count_consecutive_cells(pointer x, int needed);
+static pointer find_slot_in_env(scheme *sc, pointer env, pointer sym, int all);
+static pointer mk_number(scheme *sc, num n);
+static char *store_string(scheme *sc, int len, const char *str, gunichar fill);
+static pointer mk_vector(scheme *sc, int len);
+static pointer mk_atom(scheme *sc, char *q);
+static pointer mk_sharp_const(scheme *sc, char *name);
+static pointer mk_port(scheme *sc, port *p);
+static pointer port_from_filename(scheme *sc, const char *fn, int prop);
+static pointer port_from_file(scheme *sc, FILE *, int prop);
+static pointer port_from_string(scheme *sc, char *start, char *past_the_end, int prop);
+static port *port_rep_from_filename(scheme *sc, const char *fn, int prop);
+static port *port_rep_from_file(scheme *sc, FILE *, int prop);
+static port *port_rep_from_string(scheme *sc, char *start, char *past_the_end, int prop);
+static void port_close(scheme *sc, pointer p, int flag);
+static void mark(pointer a);
+static void gc(scheme *sc, pointer a, pointer b);
+static gunichar basic_inchar(port *pt);
+static gunichar inchar(scheme *sc);
+static void backchar(scheme *sc, gunichar c);
+static char *readstr_upto(scheme *sc, char *delim);
+static pointer readstrexp(scheme *sc);
+static INLINE int skipspace(scheme *sc);
+static int token(scheme *sc);
+static void printslashstring(scheme *sc, char *s, int len);
+static void atom2str(scheme *sc, pointer l, int f, char **pp, int *plen);
+static void printatom(scheme *sc, pointer l, int f);
+static pointer mk_proc(scheme *sc, enum scheme_opcodes op);
+static pointer mk_closure(scheme *sc, pointer c, pointer e);
+static pointer mk_continuation(scheme *sc, pointer d);
+static pointer reverse(scheme *sc, pointer a);
+static pointer reverse_in_place(scheme *sc, pointer term, pointer list);
+static pointer revappend(scheme *sc, pointer a, pointer b);
+int list_length(scheme *sc, pointer a);
+int eqv(pointer a, pointer b);
+
+static INLINE void dump_stack_mark(scheme *);
+static pointer opexe_0(scheme *sc, enum scheme_opcodes op);
+static pointer opexe_1(scheme *sc, enum scheme_opcodes op);
+static pointer opexe_2(scheme *sc, enum scheme_opcodes op);
+static pointer opexe_3(scheme *sc, enum scheme_opcodes op);
+static pointer opexe_4(scheme *sc, enum scheme_opcodes op);
+static pointer opexe_5(scheme *sc, enum scheme_opcodes op);
+static pointer opexe_6(scheme *sc, enum scheme_opcodes op);
+static void Eval_Cycle(scheme *sc, enum scheme_opcodes op);
+static void assign_syntax(scheme *sc, char *name);
+static int syntaxnum(pointer p);
+static void assign_proc(scheme *sc, enum scheme_opcodes, char *name);
+scheme *scheme_init_new(void);
+
+#define num_ivalue(n)       (n.is_fixnum?(n).value.ivalue:(long)(n).value.rvalue)
+#define num_rvalue(n)       (!n.is_fixnum?(n).value.rvalue:(double)(n).value.ivalue)
+
+static num num_add(num a, num b) {
+ num ret;
+ ret.is_fixnum=a.is_fixnum && b.is_fixnum;
+ if(ret.is_fixnum) {
+     ret.value.ivalue= a.value.ivalue+b.value.ivalue;
+ } else {
+     ret.value.rvalue=num_rvalue(a)+num_rvalue(b);
+ }
+ return ret;
+}
+
+static num num_mul(num a, num b) {
+ num ret;
+ ret.is_fixnum=a.is_fixnum && b.is_fixnum;
+ if(ret.is_fixnum) {
+     ret.value.ivalue= a.value.ivalue*b.value.ivalue;
+ } else {
+     ret.value.rvalue=num_rvalue(a)*num_rvalue(b);
+ }
+ return ret;
+}
+
+static num num_div(num a, num b) {
+ num ret;
+ ret.is_fixnum=a.is_fixnum && b.is_fixnum && a.value.ivalue%b.value.ivalue==0;
+ if(ret.is_fixnum) {
+     ret.value.ivalue= a.value.ivalue/b.value.ivalue;
+ } else {
+     ret.value.rvalue=num_rvalue(a)/num_rvalue(b);
+ }
+ return ret;
+}
+
+static num num_intdiv(num a, num b) {
+ num ret;
+ ret.is_fixnum=a.is_fixnum && b.is_fixnum;
+ if(ret.is_fixnum) {
+     ret.value.ivalue= a.value.ivalue/b.value.ivalue;
+ } else {
+     ret.value.rvalue=num_rvalue(a)/num_rvalue(b);
+ }
+ return ret;
+}
+
+static num num_sub(num a, num b) {
+ num ret;
+ ret.is_fixnum=a.is_fixnum && b.is_fixnum;
+ if(ret.is_fixnum) {
+     ret.value.ivalue= a.value.ivalue-b.value.ivalue;
+ } else {
+     ret.value.rvalue=num_rvalue(a)-num_rvalue(b);
+ }
+ return ret;
+}
+
+static num num_rem(num a, num b) {
+ num ret;
+ long e1, e2, res;
+ ret.is_fixnum=a.is_fixnum && b.is_fixnum;
+ e1=num_ivalue(a);
+ e2=num_ivalue(b);
+ res=e1%e2;
+ /* remainder should have same sign as first operand */
+ if (res > 0) {
+     if (e1 < 0) {
+        res -= labs(e2);
+     }
+ } else if (res < 0) {
+     if (e1 > 0) {
+        res += labs(e2);
+     }
+ }
+ ret.value.ivalue=res;
+ return ret;
+}
+
+static num num_mod(num a, num b) {
+ num ret;
+ long e1, e2, res;
+ ret.is_fixnum=a.is_fixnum && b.is_fixnum;
+ e1=num_ivalue(a);
+ e2=num_ivalue(b);
+ res=e1%e2;
+ /* modulo should have same sign as second operand */
+ if ((res < 0) != (e2 < 0) && res) { /* if their sign is different... */
+   res+=e2;
+ }
+ ret.value.ivalue=res;
+ return ret;
+}
+
+static int num_eq(num a, num b) {
+ int ret;
+ int is_fixnum=a.is_fixnum && b.is_fixnum;
+ if(is_fixnum) {
+     ret= a.value.ivalue==b.value.ivalue;
+ } else {
+     ret=num_rvalue(a)==num_rvalue(b);
+ }
+ return ret;
+}
+
+
+static int num_gt(num a, num b) {
+ int ret;
+ int is_fixnum=a.is_fixnum && b.is_fixnum;
+ if(is_fixnum) {
+     ret= a.value.ivalue>b.value.ivalue;
+ } else {
+     ret=num_rvalue(a)>num_rvalue(b);
+ }
+ return ret;
+}
+
+static int num_ge(num a, num b) {
+ return !num_lt(a,b);
+}
+
+static int num_lt(num a, num b) {
+ int ret;
+ int is_fixnum=a.is_fixnum && b.is_fixnum;
+ if(is_fixnum) {
+     ret= a.value.ivalue<b.value.ivalue;
+ } else {
+     ret=num_rvalue(a)<num_rvalue(b);
+ }
+ return ret;
+}
+
+static int num_le(num a, num b) {
+ return !num_gt(a,b);
+}
+
+#if USE_MATH
+/* Round to nearest. Round to even if midway */
+static double round_per_R5RS(double x) {
+ double fl=floor(x);
+ double ce=ceil(x);
+ double dfl=x-fl;
+ double dce=ce-x;
+ if(dfl>dce) {
+     return ce;
+ } else if(dfl<dce) {
+     return fl;
+ } else {
+     if(fmod(fl,2.0)==0.0) {       /* I imagine this holds */
+          return fl;
+     } else {
+          return ce;
+     }
+ }
+}
+#endif
+
+static int is_zero_double(double x) {
+ return x<DBL_MIN && x>-DBL_MIN;
+}
+
+static long binary_decode(const char *s) {
+ long x=0;
+
+ while(*s!=0 && (*s=='1' || *s=='0')) {
+     x<<=1;
+     x+=*s-'0';
+     s++;
+ }
+
+ return x;
+}
+
+/* allocate new cell segment */
+static int alloc_cellseg(scheme *sc, int n) {
+     pointer newp;
+     pointer last;
+     pointer p;
+     char *cp;
+     long i;
+     int k;
+     int adj=ADJ;
+
+     if(adj<sizeof(struct cell)) {
+       adj=sizeof(struct cell);
+     }
+
+     for (k = 0; k < n; k++) {
+          if (sc->last_cell_seg >= CELL_NSEGMENT - 1)
+               return k;
+          cp = (char*) sc->malloc(CELL_SEGSIZE * sizeof(struct cell)+adj);
+          if (cp == 0)
+               return k;
+          i = ++sc->last_cell_seg ;
+          sc->alloc_seg[i] = cp;
+          /* adjust in TYPE_BITS-bit boundary */
+          if(((uintptr_t)cp)%adj!=0) {
+            cp=(char*)(adj*((uintptr_t)cp/adj+1));
+          }
+        /* insert new segment in address order */
+          newp=(pointer)cp;
+        sc->cell_seg[i] = newp;
+        while (i > 0 && sc->cell_seg[i - 1] > sc->cell_seg[i]) {
+              p = sc->cell_seg[i];
+            sc->cell_seg[i] = sc->cell_seg[i - 1];
+            sc->cell_seg[--i] = p;
+        }
+          sc->fcells += CELL_SEGSIZE;
+        last = newp + CELL_SEGSIZE - 1;
+          for (p = newp; p <= last; p++) {
+               typeflag(p) = 0;
+               cdr(p) = p + 1;
+               car(p) = sc->NIL;
+          }
+        /* insert new cells in address order on free list */
+        if (sc->free_cell == sc->NIL || p < sc->free_cell) {
+             cdr(last) = sc->free_cell;
+             sc->free_cell = newp;
+        } else {
+              p = sc->free_cell;
+              while (cdr(p) != sc->NIL && newp > cdr(p))
+                   p = cdr(p);
+              cdr(last) = cdr(p);
+              cdr(p) = newp;
+        }
+     }
+     return n;
+}
+
+static INLINE pointer get_cell_x(scheme *sc, pointer a, pointer b) {
+  if (sc->free_cell != sc->NIL) {
+    pointer x = sc->free_cell;
+    sc->free_cell = cdr(x);
+    --sc->fcells;
+    return (x);
+  }
+  return _get_cell (sc, a, b);
+}
+
+
+/* get new cell.  parameter a, b is marked by gc. */
+static pointer _get_cell(scheme *sc, pointer a, pointer b) {
+  pointer x;
+
+  if(sc->no_memory) {
+    return sc->sink;
+  }
+
+  if (sc->free_cell == sc->NIL) {
+    const int min_to_be_recovered = sc->last_cell_seg*8;
+    gc(sc,a, b);
+    if (sc->fcells < min_to_be_recovered
+        || sc->free_cell == sc->NIL) {
+      /* if only a few recovered, get more to avoid fruitless gc's */
+      if (!alloc_cellseg(sc,1) && sc->free_cell == sc->NIL) {
+        sc->no_memory=1;
+        return sc->sink;
+      }
+    }
+  }
+  x = sc->free_cell;
+  sc->free_cell = cdr(x);
+  --sc->fcells;
+  return (x);
+}
+
+/* make sure that there is a given number of cells free */
+static pointer reserve_cells(scheme *sc, int n) {
+       if(sc->no_memory) {
+               return sc->NIL;
+       }
+
+       /* Are there enough cells available? */
+       if (sc->fcells < n) {
+               /* If not, try gc'ing some */
+               gc(sc, sc->NIL, sc->NIL);
+               if (sc->fcells < n) {
+                       /* If there still aren't, try getting more heap */
+                       if (!alloc_cellseg(sc,1)) {
+                               sc->no_memory=1;
+                               return sc->NIL;
+                       }
+               }
+               if (sc->fcells < n) {
+                       /* If all fail, report failure */
+                       sc->no_memory=1;
+                       return sc->NIL;
+               }
+       }
+       return (sc->T);
+}
+
+static pointer get_consecutive_cells(scheme *sc, int n) {
+  pointer x;
+
+  if(sc->no_memory) { return sc->sink; }
+
+  /* Are there any cells available? */
+  x=find_consecutive_cells(sc,n);
+  if (x != sc->NIL) { return x; }
+
+  /* If not, try gc'ing some */
+  gc(sc, sc->NIL, sc->NIL);
+  x=find_consecutive_cells(sc,n);
+  if (x != sc->NIL) { return x; }
+
+  /* If there still aren't, try getting more heap */
+  if (!alloc_cellseg(sc,1))
+    {
+      sc->no_memory=1;
+      return sc->sink;
+    }
+
+  x=find_consecutive_cells(sc,n);
+  if (x != sc->NIL) { return x; }
+
+  /* If all fail, report failure */
+  sc->no_memory=1;
+  return sc->sink;
+}
+
+static int count_consecutive_cells(pointer x, int needed) {
+ int n=1;
+ while(cdr(x)==x+1) {
+     x=cdr(x);
+     n++;
+     if(n>needed) return n;
+ }
+ return n;
+}
+
+static pointer find_consecutive_cells(scheme *sc, int n) {
+  pointer *pp;
+  int cnt;
+
+  pp=&sc->free_cell;
+  while(*pp!=sc->NIL) {
+    cnt=count_consecutive_cells(*pp,n);
+    if(cnt>=n) {
+      pointer x=*pp;
+      *pp=cdr(*pp+n-1);
+      sc->fcells -= n;
+      return x;
+    }
+    pp=&cdr(*pp+cnt-1);
+  }
+  return sc->NIL;
+}
+
+/* To retain recent allocs before interpreter knows about them -
+   Tehom */
+
+static void push_recent_alloc(scheme *sc, pointer recent, pointer extra)
+{
+  pointer holder = get_cell_x(sc, recent, extra);
+  typeflag(holder) = T_PAIR | T_IMMUTABLE;
+  car(holder) = recent;
+  cdr(holder) = car(sc->sink);
+  car(sc->sink) = holder;
+}
+
+
+static pointer get_cell(scheme *sc, pointer a, pointer b)
+{
+  pointer cell   = get_cell_x(sc, a, b);
+  /* For right now, include "a" and "b" in "cell" so that gc doesn't
+     think they are garbage. */
+  /* Tentatively record it as a pair so gc understands it. */
+  typeflag(cell) = T_PAIR;
+  car(cell) = a;
+  cdr(cell) = b;
+  push_recent_alloc(sc, cell, sc->NIL);
+  return cell;
+}
+
+static pointer get_vector_object(scheme *sc, int len, pointer init)
+{
+  pointer cells = get_consecutive_cells(sc,len/2+len%2+1);
+  if(sc->no_memory) { return sc->sink; }
+  /* Record it as a vector so that gc understands it. */
+  typeflag(cells) = (T_VECTOR | T_ATOM);
+  ivalue_unchecked(cells)=len;
+  set_num_integer(cells);
+  fill_vector(cells,init);
+  push_recent_alloc(sc, cells, sc->NIL);
+  return cells;
+}
+
+static INLINE void ok_to_freely_gc(scheme *sc)
+{
+  car(sc->sink) = sc->NIL;
+}
+
+
+#if defined TSGRIND
+static void check_cell_alloced(pointer p, int expect_alloced)
+{
+  /* Can't use putstr(sc,str) because callers have no access to
+     sc.  */
+  if(typeflag(p) & !expect_alloced)
+    {
+      fprintf(stderr,"Cell is already allocated!\n");
+    }
+  if(!(typeflag(p)) & expect_alloced)
+    {
+      fprintf(stderr,"Cell is not allocated!\n");
+    }
+}
+static void check_range_alloced(pointer p, int n, int expect_alloced)
+{
+  int i;
+  for(i = 0;i<n;i++)
+    { (void)check_cell_alloced(p+i,expect_alloced); }
+}
+
+#endif
+
+/* Medium level cell allocation */
+
+/* get new cons cell */
+pointer _cons(scheme *sc, pointer a, pointer b, int immutable) {
+  pointer x = get_cell(sc,a, b);
+
+  typeflag(x) = T_PAIR;
+  if(immutable) {
+    setimmutable(x);
+  }
+  car(x) = a;
+  cdr(x) = b;
+  return (x);
+}
+
+/* ========== oblist implementation  ========== */
+
+#ifndef USE_OBJECT_LIST
+
+static int hash_fn(const char *key, int table_size);
+
+static pointer oblist_initial_value(scheme *sc)
+{
+  return mk_vector(sc, 461); /* probably should be bigger */
+}
+
+/* returns the new symbol */
+static pointer oblist_add_by_name(scheme *sc, const char *name)
+{
+  pointer x;
+  int location;
+
+  x = immutable_cons(sc, mk_string(sc, name), sc->NIL);
+  typeflag(x) = T_SYMBOL;
+  setimmutable(car(x));
+
+  location = hash_fn(name, ivalue_unchecked(sc->oblist));
+  set_vector_elem(sc->oblist, location,
+                  immutable_cons(sc, x, vector_elem(sc->oblist, location)));
+  return x;
+}
+
+static INLINE pointer oblist_find_by_name(scheme *sc, const char *name)
+{
+  int location;
+  pointer x;
+  char *s;
+
+  location = hash_fn(name, ivalue_unchecked(sc->oblist));
+  for (x = vector_elem(sc->oblist, location); x != sc->NIL; x = cdr(x)) {
+    s = symname(car(x));
+    /* case-insensitive, per R5RS section 2. */
+    if(stricmp(name, s) == 0) {
+      return car(x);
+    }
+  }
+  return sc->NIL;
+}
+
+static pointer oblist_all_symbols(scheme *sc)
+{
+  int i;
+  pointer x;
+  pointer ob_list = sc->NIL;
+
+  for (i = 0; i < ivalue_unchecked(sc->oblist); i++) {
+    for (x  = vector_elem(sc->oblist, i); x != sc->NIL; x = cdr(x)) {
+      ob_list = cons(sc, x, ob_list);
+    }
+  }
+  return ob_list;
+}
+
+#else
+
+static pointer oblist_initial_value(scheme *sc)
+{
+  return sc->NIL;
+}
+
+static INLINE pointer oblist_find_by_name(scheme *sc, const char *name)
+{
+     pointer x;
+     char    *s;
+
+     for (x = sc->oblist; x != sc->NIL; x = cdr(x)) {
+        s = symname(car(x));
+        /* case-insensitive, per R5RS section 2. */
+        if(stricmp(name, s) == 0) {
+          return car(x);
+        }
+     }
+     return sc->NIL;
+}
+
+/* returns the new symbol */
+static pointer oblist_add_by_name(scheme *sc, const char *name)
+{
+  pointer x;
+
+  x = immutable_cons(sc, mk_string(sc, name), sc->NIL);
+  typeflag(x) = T_SYMBOL;
+  setimmutable(car(x));
+  sc->oblist = immutable_cons(sc, x, sc->oblist);
+  return x;
+}
+
+static pointer oblist_all_symbols(scheme *sc)
+{
+  return sc->oblist;
+}
+
+#endif
+
+static pointer mk_port(scheme *sc, port *p) {
+  pointer x = get_cell(sc, sc->NIL, sc->NIL);
+
+  typeflag(x) = T_PORT|T_ATOM;
+  x->_object._port=p;
+  return (x);
+}
+
+pointer mk_foreign_func(scheme *sc, foreign_func f) {
+  pointer x = get_cell(sc, sc->NIL, sc->NIL);
+
+  typeflag(x) = (T_FOREIGN | T_ATOM);
+  x->_object._ff=f;
+  return (x);
+}
+
+INTERFACE pointer mk_character(scheme *sc, gunichar c) {
+  pointer x = get_cell(sc,sc->NIL, sc->NIL);
+
+  typeflag(x) = (T_CHARACTER | T_ATOM);
+  ivalue_unchecked(x)= c;
+  set_num_integer(x);
+  return (x);
+}
+
+/* get number atom (integer) */
+INTERFACE pointer mk_integer(scheme *sc, long num) {
+  pointer x = get_cell(sc,sc->NIL, sc->NIL);
+
+  typeflag(x) = (T_NUMBER | T_ATOM);
+  ivalue_unchecked(x)= num;
+  set_num_integer(x);
+  return (x);
+}
+
+INTERFACE pointer mk_real(scheme *sc, double n) {
+  pointer x = get_cell(sc,sc->NIL, sc->NIL);
+
+  typeflag(x) = (T_NUMBER | T_ATOM);
+  rvalue_unchecked(x)= n;
+  set_num_real(x);
+  return (x);
+}
+
+static pointer mk_number(scheme *sc, num n) {
+ if(n.is_fixnum) {
+     return mk_integer(sc,n.value.ivalue);
+ } else {
+     return mk_real(sc,n.value.rvalue);
+ }
+}
+
+pointer foreign_error (scheme *sc, const char *s, pointer a) {
+  sc->foreign_error = cons (sc, mk_string (sc, s), a);
+  return sc->T;
+}
+
+/* char_cnt is length of string in chars. */
+/* str points to a NUL terminated string. */
+/* Only uses fill_char if str is NULL.    */
+/* This routine automatically adds 1 byte */
+/* to allow space for terminating NUL.    */
+static char *store_string(scheme *sc, int char_cnt,
+                          const char *str, gunichar fill) {
+     int  len;
+     int  i;
+     gchar utf8[7];
+     gchar *q;
+     gchar *q2;
+
+     if(str!=0) {
+       q2 = g_utf8_offset_to_pointer(str, (long)char_cnt);
+       (void)g_utf8_validate(str, -1, (const gchar **)&q);
+       if (q <= q2)
+          len = q - str;
+       else
+          len = q2 - str;
+       q=(gchar*)sc->malloc(len+1);
+     } else {
+       len = g_unichar_to_utf8(fill, utf8);
+       q=(gchar*)sc->malloc(char_cnt*len+1);
+     }
+
+     if(q==0) {
+       sc->no_memory=1;
+       return sc->strbuff;
+     }
+     if(str!=0) {
+       memcpy(q, str, len);
+       q[len]=0;
+     } else {
+       q2 = q;
+       for (i = 0; i < char_cnt; ++i)
+       {
+         memcpy(q2, utf8, len);
+         q2 += len;
+       }
+       *q2=0;
+     }
+     return (q);
+}
+
+/* get new string */
+INTERFACE pointer mk_string(scheme *sc, const char *str) {
+     return mk_counted_string(sc,str,g_utf8_strlen(str, -1));
+}
+
+/* str points to a NUL terminated string. */
+/* len is the length of str in characters */
+INTERFACE pointer mk_counted_string(scheme *sc, const char *str, int len) {
+     pointer x = get_cell(sc, sc->NIL, sc->NIL);
+
+     typeflag(x) = (T_STRING | T_ATOM);
+     strvalue(x) = store_string(sc,len,str,0);
+     strlength(x) = len;
+     return (x);
+}
+
+/* len is the length for the empty string in characters */
+INTERFACE pointer mk_empty_string(scheme *sc, int len, gunichar fill) {
+     pointer x = get_cell(sc, sc->NIL, sc->NIL);
+
+     typeflag(x) = (T_STRING | T_ATOM);
+     strvalue(x) = store_string(sc,len,0,fill);
+     strlength(x) = len;
+     return (x);
+}
+
+INTERFACE static pointer mk_vector(scheme *sc, int len)
+{ return get_vector_object(sc,len,sc->NIL); }
+
+INTERFACE static void fill_vector(pointer vec, pointer obj) {
+     int i;
+     int num=ivalue(vec)/2+ivalue(vec)%2;
+     for(i=0; i<num; i++) {
+          typeflag(vec+1+i) = T_PAIR;
+          setimmutable(vec+1+i);
+          car(vec+1+i)=obj;
+          cdr(vec+1+i)=obj;
+     }
+}
+
+INTERFACE static pointer vector_elem(pointer vec, int ielem) {
+     int n=ielem/2;
+     if(ielem%2==0) {
+          return car(vec+1+n);
+     } else {
+          return cdr(vec+1+n);
+     }
+}
+
+INTERFACE static pointer set_vector_elem(pointer vec, int ielem, pointer a) {
+     int n=ielem/2;
+     if(ielem%2==0) {
+          return car(vec+1+n)=a;
+     } else {
+          return cdr(vec+1+n)=a;
+     }
+}
+
+/* get new symbol */
+INTERFACE pointer mk_symbol(scheme *sc, const char *name) {
+     pointer x;
+
+     /* first check oblist */
+     x = oblist_find_by_name(sc, name);
+     if (x != sc->NIL) {
+          return (x);
+     } else {
+          x = oblist_add_by_name(sc, name);
+          return (x);
+     }
+}
+
+INTERFACE pointer gensym(scheme *sc) {
+     pointer x;
+     char name[40];
+
+     for(; sc->gensym_cnt<LONG_MAX; sc->gensym_cnt++) {
+          snprintf(name,40,"gensym-%ld",sc->gensym_cnt);
+
+          /* first check oblist */
+          x = oblist_find_by_name(sc, name);
+
+          if (x != sc->NIL) {
+               continue;
+          } else {
+               x = oblist_add_by_name(sc, name);
+               return (x);
+          }
+     }
+
+     return sc->NIL;
+}
+
+/* make symbol or number atom from string */
+static pointer mk_atom(scheme *sc, char *q) {
+     char    c, *p;
+     int has_dec_point=0;
+     int has_fp_exp = 0;
+
+#if USE_COLON_HOOK
+     if((p=strstr(q,"::"))!=0) {
+          *p=0;
+          return cons(sc, sc->COLON_HOOK,
+                          cons(sc,
+                              cons(sc,
+                                   sc->QUOTE,
+                                   cons(sc, mk_atom(sc,p+2), sc->NIL)),
+                              cons(sc, mk_symbol(sc,strlwr(q)), sc->NIL)));
+     }
+#endif
+
+     p = q;
+     c = *p++;
+     if ((c == '+') || (c == '-')) {
+       c = *p++;
+       if (c == '.') {
+         has_dec_point=1;
+         c = *p++;
+       }
+       if (!isdigit(c)) {
+         return (mk_symbol(sc, strlwr(q)));
+       }
+     } else if (c == '.') {
+       has_dec_point=1;
+       c = *p++;
+       if (!isdigit(c)) {
+         return (mk_symbol(sc, strlwr(q)));
+       }
+     } else if (!isdigit(c)) {
+       return (mk_symbol(sc, strlwr(q)));
+     }
+
+     for ( ; (c = *p) != 0; ++p) {
+          if (!isdigit(c)) {
+               if(c=='.') {
+                    if(!has_dec_point) {
+                         has_dec_point=1;
+                         continue;
+                    }
+               }
+               else if ((c == 'e') || (c == 'E')) {
+                       if(!has_fp_exp) {
+                          has_dec_point = 1; /* decimal point illegal
+                                                from now on */
+                          p++;
+                          if ((*p == '-') || (*p == '+') || isdigit(*p)) {
+                             continue;
+                          }
+                       }
+               }
+               return (mk_symbol(sc, strlwr(q)));
+          }
+     }
+     if(has_dec_point) {
+       return mk_real(sc,g_ascii_strtod(q,NULL));
+     }
+     return (mk_integer(sc, atol(q)));
+}
+
+/* make constant */
+static pointer mk_sharp_const(scheme *sc, char *name) {
+     long    x;
+     char    tmp[STRBUFFSIZE];
+
+     if (!strcmp(name, "t"))
+          return (sc->T);
+     else if (!strcmp(name, "f"))
+          return (sc->F);
+     else if (*name == 'o') {/* #o (octal) */
+          snprintf(tmp, STRBUFFSIZE, "0%s", name+1);
+          sscanf(tmp, "%lo", (long unsigned *)&x);
+          return (mk_integer(sc, x));
+     } else if (*name == 'd') {    /* #d (decimal) */
+          sscanf(name+1, "%ld", (long int *)&x);
+          return (mk_integer(sc, x));
+     } else if (*name == 'x') {    /* #x (hex) */
+          snprintf(tmp, STRBUFFSIZE, "0x%s", name+1);
+          sscanf(tmp, "%lx", (long unsigned *)&x);
+          return (mk_integer(sc, x));
+     } else if (*name == 'b') {    /* #b (binary) */
+          x = binary_decode(name+1);
+          return (mk_integer(sc, x));
+     } else if (*name == '\\') { /* #\w (character) */
+          gunichar c=0;
+          if(stricmp(name+1,"space")==0) {
+               c=' ';
+          } else if(stricmp(name+1,"newline")==0) {
+               c='\n';
+          } else if(stricmp(name+1,"return")==0) {
+               c='\r';
+          } else if(stricmp(name+1,"tab")==0) {
+               c='\t';
+     } else if(name[1]=='x' && name[2]!=0) {
+          int c1=0;
+          if(sscanf(name+2,"%x",(unsigned int *)&c1)==1 && c1 < UCHAR_MAX) {
+               c=c1;
+          } else {
+               return sc->NIL;
+     }
+#if USE_ASCII_NAMES
+          } else if(is_ascii_name(name+1,&c)) {
+               /* nothing */
+#endif
+          } else if(name[2]==0) {
+               c=name[1];
+          } else {
+               return sc->NIL;
+          }
+          return mk_character(sc,c);
+     } else
+          return (sc->NIL);
+}
+
+/* ========== garbage collector ========== */
+
+/*--
+ *  We use algorithm E (Knuth, The Art of Computer Programming Vol.1,
+ *  sec. 2.3.5), the Schorr-Deutsch-Waite link-inversion algorithm,
+ *  for marking.
+ */
+static void mark(pointer a) {
+     pointer t, q, p;
+
+     t = (pointer) 0;
+     p = a;
+E2:  setmark(p);
+     if(is_vector(p)) {
+          int i;
+          int num=ivalue_unchecked(p)/2+ivalue_unchecked(p)%2;
+          for(i=0; i<num; i++) {
+               /* Vector cells will be treated like ordinary cells */
+               mark(p+1+i);
+          }
+     }
+     if (is_atom(p))
+          goto E6;
+     /* E4: down car */
+     q = car(p);
+     if (q && !is_mark(q)) {
+          setatom(p);  /* a note that we have moved car */
+          car(p) = t;
+          t = p;
+          p = q;
+          goto E2;
+     }
+ E5:  q = cdr(p); /* down cdr */
+     if (q && !is_mark(q)) {
+          cdr(p) = t;
+          t = p;
+          p = q;
+          goto E2;
+     }
+E6:   /* up.  Undo the link switching from steps E4 and E5. */
+     if (!t)
+          return;
+     q = t;
+     if (is_atom(q)) {
+          clratom(q);
+          t = car(q);
+          car(q) = p;
+          p = q;
+          goto E5;
+     } else {
+          t = cdr(q);
+          cdr(q) = p;
+          p = q;
+          goto E6;
+     }
+}
+
+/* garbage collection. parameter a, b is marked. */
+static void gc(scheme *sc, pointer a, pointer b) {
+  pointer p;
+  int i;
+
+  if(sc->gc_verbose) {
+    putstr(sc, "gc...");
+  }
+
+  /* mark system globals */
+  mark(sc->oblist);
+  mark(sc->global_env);
+
+  /* mark current registers */
+  mark(sc->args);
+  mark(sc->envir);
+  mark(sc->code);
+  dump_stack_mark(sc);
+  mark(sc->value);
+  mark(sc->inport);
+  mark(sc->save_inport);
+  mark(sc->outport);
+  mark(sc->loadport);
+
+  /* Mark recent objects the interpreter doesn't know about yet. */
+  mark(car(sc->sink));
+  /* Mark any older stuff above nested C calls */
+  mark(sc->c_nest);
+
+  /* mark variables a, b */
+  mark(a);
+  mark(b);
+
+  /* garbage collect */
+  clrmark(sc->NIL);
+  sc->fcells = 0;
+  sc->free_cell = sc->NIL;
+  /* free-list is kept sorted by address so as to maintain consecutive
+     ranges, if possible, for use with vectors. Here we scan the cells
+     (which are also kept sorted by address) downwards to build the
+     free-list in sorted order.
+  */
+  for (i = sc->last_cell_seg; i >= 0; i--) {
+    p = sc->cell_seg[i] + CELL_SEGSIZE;
+    while (--p >= sc->cell_seg[i]) {
+      if (is_mark(p)) {
+        clrmark(p);
+      } else {
+        /* reclaim cell */
+        if (typeflag(p) != 0) {
+          finalize_cell(sc, p);
+          typeflag(p) = 0;
+          car(p) = sc->NIL;
+        }
+        ++sc->fcells;
+        cdr(p) = sc->free_cell;
+        sc->free_cell = p;
+      }
+    }
+  }
+
+  if (sc->gc_verbose) {
+    char msg[80];
+    snprintf(msg,80,"done: %ld cells were recovered.\n", sc->fcells);
+    putstr(sc,msg);
+  }
+}
+
+static void finalize_cell(scheme *sc, pointer a) {
+  if(is_string(a)) {
+    sc->free(strvalue(a));
+  } else if(is_port(a)) {
+    if(a->_object._port->kind&port_file
+       && a->_object._port->rep.stdio.closeit) {
+      port_close(sc,a,port_input|port_output);
+    }
+    sc->free(a->_object._port);
+  }
+}
+
+/* ========== Routines for Reading ========== */
+
+static int file_push(scheme *sc, const char *fname) {
+ FILE *fin = NULL;
+ if (sc->file_i == MAXFIL-1)
+    return 0;
+
+  fin=g_fopen(fname,"rb");
+  if(fin!=0) {
+    sc->file_i++;
+    sc->load_stack[sc->file_i].kind=port_file|port_input;
+    sc->load_stack[sc->file_i].rep.stdio.file=fin;
+    sc->load_stack[sc->file_i].rep.stdio.closeit=1;
+    sc->nesting_stack[sc->file_i]=0;
+    sc->loadport->_object._port=sc->load_stack+sc->file_i;
+
+#if SHOW_ERROR_LINE
+    sc->load_stack[sc->file_i].rep.stdio.curr_line = 0;
+    if(fname)
+      sc->load_stack[sc->file_i].rep.stdio.filename = store_string(sc, strlen(fname), fname, 0);
+#endif
+  }
+  return fin!=0;
+}
+
+static void file_pop(scheme *sc) {
+ if(sc->file_i != 0) {
+     sc->nesting=sc->nesting_stack[sc->file_i];
+     port_close(sc,sc->loadport,port_input);
+     sc->file_i--;
+     sc->loadport->_object._port=sc->load_stack+sc->file_i;
+   }
+}
+
+static int file_interactive(scheme *sc) {
+ return sc->file_i==0 && sc->load_stack[0].rep.stdio.file==stdin
+     && sc->inport->_object._port->kind&port_file;
+}
+
+static port *port_rep_from_filename(scheme *sc, const char *fn, int prop) {
+  FILE *f;
+  char *rw;
+  port *pt;
+  if(prop==(port_input|port_output)) {
+    rw="a+b";
+  } else if(prop==port_output) {
+    rw="wb";
+  } else {
+    rw="rb";
+  }
+  f=g_fopen(fn,rw);
+  if(f==0) {
+    return 0;
+  }
+  pt=port_rep_from_file(sc,f,prop);
+  pt->rep.stdio.closeit=1;
+
+#if SHOW_ERROR_LINE
+  if(fn)
+    pt->rep.stdio.filename = store_string(sc, strlen(fn), fn, 0);
+
+  pt->rep.stdio.curr_line = 0;
+#endif
+  return pt;
+}
+
+static pointer port_from_filename(scheme *sc, const char *fn, int prop) {
+  port *pt;
+  pt=port_rep_from_filename(sc,fn,prop);
+  if(pt==0) {
+    return sc->NIL;
+  }
+  return mk_port(sc,pt);
+}
+
+static port *port_rep_from_file(scheme *sc, FILE *f, int prop)
+{
+    port *pt;
+
+    pt = (port *)sc->malloc(sizeof *pt);
+    if (pt == NULL) {
+        return NULL;
+    }
+    pt->kind = port_file | prop;
+    pt->rep.stdio.file = f;
+    pt->rep.stdio.closeit = 0;
+    return pt;
+}
+
+static pointer port_from_file(scheme *sc, FILE *f, int prop) {
+  port *pt;
+  pt=port_rep_from_file(sc,f,prop);
+  if(pt==0) {
+    return sc->NIL;
+  }
+  return mk_port(sc,pt);
+}
+
+static port *port_rep_from_string(scheme *sc, char *start, char *past_the_end, int prop) {
+  port *pt;
+  pt=(port*)sc->malloc(sizeof(port));
+  if(pt==0) {
+    return 0;
+  }
+  pt->kind=port_string|prop;
+  pt->rep.string.start=start;
+  pt->rep.string.curr=start;
+  pt->rep.string.past_the_end=past_the_end;
+  return pt;
+}
+
+static pointer port_from_string(scheme *sc, char *start, char *past_the_end, int prop) {
+  port *pt;
+  pt=port_rep_from_string(sc,start,past_the_end,prop);
+  if(pt==0) {
+    return sc->NIL;
+  }
+  return mk_port(sc,pt);
+}
+
+#define BLOCK_SIZE 256
+
+static port *port_rep_from_scratch(scheme *sc) {
+  port *pt;
+  char *start;
+  pt=(port*)sc->malloc(sizeof(port));
+  if(pt==0) {
+    return 0;
+  }
+  start=sc->malloc(BLOCK_SIZE);
+  if(start==0) {
+    return 0;
+  }
+  memset(start,' ',BLOCK_SIZE-1);
+  start[BLOCK_SIZE-1]='\0';
+  pt->kind=port_string|port_output|port_srfi6;
+  pt->rep.string.start=start;
+  pt->rep.string.curr=start;
+  pt->rep.string.past_the_end=start+BLOCK_SIZE-1;
+  return pt;
+}
+
+static pointer port_from_scratch(scheme *sc) {
+  port *pt;
+  pt=port_rep_from_scratch(sc);
+  if(pt==0) {
+    return sc->NIL;
+  }
+  return mk_port(sc,pt);
+}
+
+static void port_close(scheme *sc, pointer p, int flag) {
+  port *pt=p->_object._port;
+  pt->kind&=~flag;
+  if((pt->kind & (port_input|port_output))==0) {
+    if(pt->kind&port_file) {
+
+#if SHOW_ERROR_LINE
+      /* Cleanup is here so (close-*-port) functions could work too */
+      pt->rep.stdio.curr_line = 0;
+
+      if(pt->rep.stdio.filename)
+        sc->free(pt->rep.stdio.filename);
+#endif
+
+      fclose(pt->rep.stdio.file);
+    }
+    pt->kind=port_free;
+  }
+}
+
+/* This routine will ignore byte sequences that are not valid UTF-8 */
+static gunichar basic_inchar(port *pt) {
+  if(pt->kind & port_file) {
+    int  c;
+
+    c = fgetc(pt->rep.stdio.file);
+
+    while (TRUE)
+      {
+        if (c == EOF) return EOF;
+
+        if (c <= 0x7f)
+            return (gunichar) c;
+
+        /* Is this byte an invalid lead per RFC-3629? */
+        if (c < 0xc2 || c > 0xf4)
+          {
+            /* Ignore invalid lead byte and get the next character */
+            c = fgetc(pt->rep.stdio.file);
+          }
+        else    /* Byte is valid lead */
+          {
+            unsigned char utf8[7];
+            int  len;
+            int  i;
+
+            utf8[0] = c;    /* Save the lead byte */
+
+            len = utf8_length[c & 0x3F];
+            for (i = 1; i <= len; i++)
+              {
+                c = fgetc(pt->rep.stdio.file);
+
+                /* Stop reading if this is not a continuation character */
+                if ((c & 0xc0) != 0x80)
+                    break;
+
+                utf8[i] = c;
+              }
+
+            if (i > len)    /* Read the expected number of bytes? */
+              {
+                return g_utf8_get_char_validated ((char *) utf8,
+                                                  sizeof(utf8));
+              }
+
+            /* Not enough continuation characters so ignore and restart */
+          }
+      } /* end of while (TRUE) */
+  } else {
+    gunichar c;
+    int      len;
+
+    while (TRUE)
+    {
+      /* Found NUL or at end of input buffer? */
+      if (*pt->rep.string.curr == 0 ||
+          pt->rep.string.curr == pt->rep.string.past_the_end) {
+        return EOF;
+      }
+
+      len = pt->rep.string.past_the_end - pt->rep.string.curr;
+      c = g_utf8_get_char_validated(pt->rep.string.curr, len);
+
+      if (c != (gunichar) -1 &&
+          c != (gunichar) -2)   /* Valid UTF-8 character? */
+      {
+        len = g_unichar_to_utf8(c, NULL);   /* Length of UTF-8 sequence */
+        pt->rep.string.curr += len;
+        return c;
+      }
+
+      /* Look for next valid UTF-8 character in buffer */
+      pt->rep.string.curr = g_utf8_find_next_char(pt->rep.string.curr,
+                                                  pt->rep.string.past_the_end);
+    } /* end of while (TRUE) */
+  }
+}
+
+/* get new character from input file */
+static gunichar inchar(scheme *sc) {
+  gunichar c;
+  port *pt;
+
+  pt = sc->inport->_object._port;
+  if(pt->kind & port_saw_EOF)
+    { return(EOF); }
+  if(pt->kind&port_file)
+  {
+    if (sc->bc_flag)
+      c = sc->backchar[--sc->bc_flag];
+    else
+      c = basic_inchar(pt);
+  }
+  else
+    c = basic_inchar(pt);
+  if(c == EOF && sc->inport == sc->loadport) {
+    /* Instead, set port_saw_EOF */
+    pt->kind |= port_saw_EOF;
+
+    /* file_pop(sc); */
+    return EOF;
+    /* NOTREACHED */
+  }
+  return c;
+}
+
+/* back character to input buffer */
+static void backchar(scheme *sc, gunichar c) {
+  port *pt;
+  gint  charlen;
+
+  if(c==EOF) return;
+  charlen = g_unichar_to_utf8(c, NULL);
+  pt=sc->inport->_object._port;
+  if(pt->kind&port_file) {
+    if (sc->bc_flag < 2)
+      sc->backchar[sc->bc_flag++] = c;
+  } else {
+    if(pt->rep.string.curr!=pt->rep.string.start) {
+      if(pt->rep.string.curr-pt->rep.string.start >= charlen)
+        pt->rep.string.curr -= charlen;
+      else
+        pt->rep.string.curr = pt->rep.string.start;
+    }
+  }
+}
+
+static int realloc_port_string(scheme *sc, port *p)
+{
+  char *start=p->rep.string.start;
+  size_t new_size=p->rep.string.past_the_end-start+1+BLOCK_SIZE;
+  char *str=sc->malloc(new_size);
+  if(str) {
+    memset(str,' ',new_size-1);
+    str[new_size-1]='\0';
+    strcpy(str,start);
+    p->rep.string.start=str;
+    p->rep.string.past_the_end=str+new_size-1;
+    p->rep.string.curr-=start-str;
+    sc->free(start);
+    return 1;
+  } else {
+    return 0;
+  }
+}
+
+/* len is number of UTF-8 characters in string pointed to by chars */
+static void putchars(scheme *sc, const char *chars, int char_cnt) {
+  int   free_bytes;     /* Space remaining in buffer (in bytes) */
+  int   l;
+  port *pt=sc->outport->_object._port;
+
+  if (char_cnt <= 0)
+      return;
+
+  /* Get length of 'chars' in bytes */
+  char_cnt = g_utf8_offset_to_pointer(chars, (long)char_cnt) - chars;
+
+  if(pt->kind&port_file) {
+#if STANDALONE
+      fwrite(chars,1,char_cnt,pt->rep.stdio.file);
+      fflush(pt->rep.stdio.file);
+#else
+      /* If output is still directed to stdout (the default) it should be    */
+      /* safe to redirect it to the registered output routine. */
+      if (pt->rep.stdio.file == stdout)
+           ts_output_string (TS_OUTPUT_NORMAL, chars, char_cnt);
+      else {
+        fwrite(chars,1,char_cnt,pt->rep.stdio.file);
+        fflush(pt->rep.stdio.file);
+      }
+#endif
+  } else {
+    if (pt->rep.string.past_the_end != pt->rep.string.curr)
+    {
+       free_bytes = pt->rep.string.past_the_end - pt->rep.string.curr;
+       l = min(char_cnt, free_bytes);
+       memcpy(pt->rep.string.curr, chars, l);
+       pt->rep.string.curr += l;
+    }
+    else if(pt->kind&port_srfi6&&realloc_port_string(sc,pt))
+    {
+       free_bytes = pt->rep.string.past_the_end - pt->rep.string.curr;
+       l = min(char_cnt, free_bytes);
+       memcpy(pt->rep.string.curr, chars, char_cnt);
+       pt->rep.string.curr += l;
+    }
+  }
+}
+
+INTERFACE void putcharacter(scheme *sc, gunichar c) {
+  char utf8[7];
+
+  (void)g_unichar_to_utf8(c, utf8);
+  putchars(sc, utf8, 1);
+}
+
+INTERFACE void putstr(scheme *sc, const char *s) {
+  putchars(sc, s, g_utf8_strlen(s, -1));
+}
+
+/* read characters up to delimiter, but cater to character constants */
+static char *readstr_upto(scheme *sc, char *delim) {
+  char *p = sc->strbuff;
+  gunichar c = 0;
+  gunichar c_prev = 0;
+  int len = 0;
+
+  do {
+    c_prev = c;
+    c = inchar(sc);
+    len = g_unichar_to_utf8(c, p);
+    p += len;
+  } while ((p - sc->strbuff < sizeof(sc->strbuff)) &&
+           (c && !is_one_of(delim, c)));
+
+  if(p == sc->strbuff+2 && c_prev == '\\')
+    *p = '\0';
+  else
+  {
+    backchar(sc,c);    /* put back the delimiter */
+    p[-len] = '\0';
+  }
+  return sc->strbuff;
+}
+
+/* read string expression "xxx...xxx" */
+static pointer readstrexp(scheme *sc) {
+  char *p = sc->strbuff;
+  gunichar c;
+  int c1=0;
+  int len;
+  enum { st_ok, st_bsl, st_x1, st_x2, st_oct1, st_oct2 } state=st_ok;
+
+  for (;;) {
+    c=inchar(sc);
+    if(c == EOF || p-sc->strbuff > sizeof(sc->strbuff)-1) {
+      return sc->F;
+    }
+    switch(state) {
+    case st_ok:
+      switch(c) {
+      case '\\':
+        state=st_bsl;
+        break;
+      case '"':
+        *p=0;
+        return mk_counted_string(sc,sc->strbuff,
+                                 g_utf8_strlen(sc->strbuff, sizeof(sc->strbuff)));
+      default:
+        len = g_unichar_to_utf8(c, p);
+        p += len;
+        break;
+      }
+      break;
+    case st_bsl:
+      switch(c) {
+      case '0':
+      case '1':
+      case '2':
+      case '3':
+      case '4':
+      case '5':
+      case '6':
+      case '7':
+        state=st_oct1;
+        c1=g_unichar_digit_value(c);
+        break;
+      case 'x':
+      case 'X':
+        state=st_x1;
+        c1=0;
+        break;
+      case 'n':
+        *p++='\n';
+        state=st_ok;
+        break;
+      case 't':
+        *p++='\t';
+        state=st_ok;
+        break;
+      case 'r':
+        *p++='\r';
+        state=st_ok;
+        break;
+      case '"':
+        *p++='"';
+        state=st_ok;
+        break;
+      default:
+        len = g_unichar_to_utf8(c, p);
+        p += len;
+        state=st_ok;
+        break;
+      }
+      break;
+    case st_x1:
+    case st_x2:
+      if (!g_unichar_isxdigit(c))
+         return sc->F;
+      c1=(c1<<4)+g_unichar_xdigit_value(c);
+      if(state==st_x1)
+        state=st_x2;
+      else {
+        *p++=c1;
+        state=st_ok;
+      }
+      break;
+    case st_oct1:   /* State when handling second octal digit */
+    case st_oct2:   /* State when handling third octal digit */
+      if (!g_unichar_isdigit(c) || g_unichar_digit_value(c) > 7)
+      {
+        *p++=c1;
+        backchar(sc, c);
+        state=st_ok;
+      }
+      else
+      {
+        /* Is value of three character octal too big for a byte? */
+        if (state==st_oct2 && c1 >= 32)
+          return sc->F;
+
+        c1=(c1<<3)+g_unichar_digit_value(c);
+
+        if (state == st_oct1)
+          state=st_oct2;
+        else
+        {
+          *p++=c1;
+          state=st_ok;
+        }
+      }
+      break;
+    }
+  }
+}
+
+/* check c is in chars */
+static INLINE int is_one_of(char *s, gunichar c) {
+  if (c==EOF)
+     return 1;
+
+  if (g_utf8_strchr(s, -1, c) != NULL)
+     return (1);
+
+  return (0);
+}
+
+/* skip white characters */
+static INLINE int skipspace(scheme *sc) {
+     gunichar c;
+     int curr_line = 0;
+     do {
+         c=inchar(sc);
+#if SHOW_ERROR_LINE
+         if(c=='\n')
+           curr_line++;
+#endif
+     } while (g_unichar_isspace(c));
+
+/* record it */
+#if SHOW_ERROR_LINE
+     if (sc->load_stack[sc->file_i].kind & port_file)
+       sc->load_stack[sc->file_i].rep.stdio.curr_line += curr_line;
+#endif
+
+     if(c!=EOF) {
+          backchar(sc,c);
+          return 1;
+     }
+     else
+       { return EOF; }
+}
+
+/* get token */
+static int token(scheme *sc) {
+     gunichar c;
+     c = skipspace(sc);
+     if(c == EOF) { return (TOK_EOF); }
+     switch (c=inchar(sc)) {
+     case EOF:
+          return (TOK_EOF);
+     case '(':
+          return (TOK_LPAREN);
+     case ')':
+          return (TOK_RPAREN);
+     case '.':
+          c=inchar(sc);
+          if(is_one_of(" \n\t",c)) {
+               return (TOK_DOT);
+          } else {
+               backchar(sc,c);
+               backchar(sc,'.');
+               return TOK_ATOM;
+          }
+     case '\'':
+          return (TOK_QUOTE);
+     case ';':
+          while ((c=inchar(sc)) != '\n' && c!=EOF)
+            ;
+
+#if SHOW_ERROR_LINE
+           if(c == '\n' && sc->load_stack[sc->file_i].kind & port_file)
+             sc->load_stack[sc->file_i].rep.stdio.curr_line++;
+#endif
+
+       if(c == EOF)
+         { return (TOK_EOF); }
+       else
+         { return (token(sc));}
+     case '"':
+          return (TOK_DQUOTE);
+     case '_':
+          if ((c=inchar(sc)) == '"')
+               return (TOK_USCORE);
+          backchar(sc,c);
+          return (TOK_ATOM);
+     case BACKQUOTE:
+          return (TOK_BQUOTE);
+     case ',':
+          if ((c=inchar(sc)) == '@') {
+               return (TOK_ATMARK);
+          } else {
+               backchar(sc,c);
+               return (TOK_COMMA);
+          }
+     case '#':
+          c=inchar(sc);
+          if (c == '(') {
+               return (TOK_VEC);
+          } else if(c == '!') {
+               while ((c=inchar(sc)) != '\n' && c!=EOF)
+                   ;
+
+#if SHOW_ERROR_LINE
+           if(c == '\n' && sc->load_stack[sc->file_i].kind & port_file)
+             sc->load_stack[sc->file_i].rep.stdio.curr_line++;
+#endif
+
+           if(c == EOF)
+             { return (TOK_EOF); }
+           else
+             { return (token(sc));}
+          } else {
+               backchar(sc,c);
+               if(is_one_of(" tfodxb\\",c)) {
+                    return TOK_SHARP_CONST;
+               } else {
+                    return (TOK_SHARP);
+               }
+          }
+     default:
+          backchar(sc,c);
+          return (TOK_ATOM);
+     }
+}
+
+/* ========== Routines for Printing ========== */
+#define   ok_abbrev(x)   (is_pair(x) && cdr(x) == sc->NIL)
+
+static void printslashstring(scheme *sc, char *p, int len) {
+  int i;
+  gunichar c;
+  char *s=(char*)p;
+
+  putcharacter(sc,'"');
+  for (i=0; i<len; i++) {
+    c = g_utf8_get_char(s);
+    /* Is a check for a value of 0xff still valid in UTF8?? ~~~~~ */
+    if(c==0xff || c=='"' || c<' ' || c=='\\') {
+      putcharacter(sc,'\\');
+      switch(c) {
+      case '"':
+        putcharacter(sc,'"');
+        break;
+      case '\n':
+        putcharacter(sc,'n');
+        break;
+      case '\t':
+        putcharacter(sc,'t');
+        break;
+      case '\r':
+        putcharacter(sc,'r');
+        break;
+      case '\\':
+        putcharacter(sc,'\\');
+        break;
+      default: {
+          /* This still needs work ~~~~~ */
+          int d=c/16;
+          putcharacter(sc,'x');
+          if(d<10) {
+            putcharacter(sc,d+'0');
+          } else {
+            putcharacter(sc,d-10+'A');
+          }
+          d=c%16;
+          if(d<10) {
+            putcharacter(sc,d+'0');
+          } else {
+            putcharacter(sc,d-10+'A');
+          }
+        }
+      }
+    } else {
+      putcharacter(sc,c);
+    }
+    s = g_utf8_next_char(s);
+  }
+  putcharacter(sc,'"');
+}
+
+
+/* print atoms */
+static void printatom(scheme *sc, pointer l, int f) {
+  char *p;
+  int len;
+  atom2str(sc,l,f,&p,&len);
+  putchars(sc,p,len);
+}
+
+
+/* Uses internal buffer unless string pointer is already available */
+static void atom2str(scheme *sc, pointer l, int f, char **pp, int *plen) {
+     char *p;
+
+     if (l == sc->NIL) {
+          p = "()";
+     } else if (l == sc->T) {
+          p = "#t";
+     } else if (l == sc->F) {
+          p = "#f";
+     } else if (l == sc->EOF_OBJ) {
+          p = "#<EOF>";
+     } else if (is_port(l)) {
+          p = "#<PORT>";
+     } else if (is_number(l)) {
+          p = sc->strbuff;
+          if (f <= 1 || f == 10) /* f is the base for numbers if > 1 */ {
+              if(num_is_integer(l)) {
+                   snprintf(p, STRBUFFSIZE, "%ld", ivalue_unchecked(l));
+              } else {
+                   snprintf(p, STRBUFFSIZE, "%.10g", rvalue_unchecked(l));
+                   /* r5rs says there must be a '.' (unless 'e'?) */
+                   f = strcspn(p, ".e");
+                   if (p[f] == 0) {
+                        p[f] = '.'; /* not found, so add '.0' at the end */
+                        p[f+1] = '0';
+                        p[f+2] = 0;
+                   }
+              }
+          } else {
+              long v = ivalue(l);
+              if (f == 16) {
+                  if (v >= 0)
+                    snprintf(p, STRBUFFSIZE, "%lx", v);
+                  else
+                    snprintf(p, STRBUFFSIZE, "-%lx", -v);
+              } else if (f == 8) {
+                  if (v >= 0)
+                    snprintf(p, STRBUFFSIZE, "%lo", v);
+                  else
+                    snprintf(p, STRBUFFSIZE, "-%lo", -v);
+              } else if (f == 2) {
+                  unsigned long b = (v < 0) ? -v : v;
+                  p = &p[STRBUFFSIZE-1];
+                  *p = 0;
+                  do { *--p = (b&1) ? '1' : '0'; b >>= 1; } while (b != 0);
+                  if (v < 0) *--p = '-';
+              }
+          }
+     } else if (is_string(l)) {
+          if (!f) {
+               p = strvalue(l);
+          } else { /* Hack, uses the fact that printing is needed */
+               *pp=sc->strbuff;
+               *plen=0;
+               printslashstring(sc, strvalue(l),
+                                g_utf8_strlen(strvalue(l), -1));
+               return;
+          }
+     } else if (is_character(l)) {
+          gunichar c=charvalue(l);
+          p = sc->strbuff;
+          if (!f) {
+               int len = g_unichar_to_utf8(c, p);
+               p[len]=0;
+          } else {
+               switch(c) {
+               case ' ':
+                    p = "#\\space";
+                    break;
+               case '\n':
+                    p = "#\\newline";
+                    break;
+               case '\r':
+                    p = "#\\return";
+                    break;
+               case '\t':
+                    p = "#\\tab";
+                    break;
+               default:
+#if USE_ASCII_NAMES
+                    if(c==127) {
+                         p = "#\\del";
+                         break;
+                    } else if(c<32) {
+                         snprintf(p,STRBUFFSIZE, "#\\%s", charnames[c]);
+                         break;
+                    }
+#else
+                    if(c<32) {
+                      snprintf(p,STRBUFFSIZE,"#\\x%x",c);
+                      break;
+                    }
+#endif
+                    snprintf(p,STRBUFFSIZE,"#\\%c",c);
+                    break;
+               }
+          }
+     } else if (is_symbol(l)) {
+          p = symname(l);
+     } else if (is_proc(l)) {
+          p = sc->strbuff;
+          snprintf(p,STRBUFFSIZE,"#<%s PROCEDURE %ld>",
+                   procname(l),procnum(l));
+     } else if (is_macro(l)) {
+          p = "#<MACRO>";
+     } else if (is_closure(l)) {
+          p = "#<CLOSURE>";
+     } else if (is_promise(l)) {
+          p = "#<PROMISE>";
+     } else if (is_foreign(l)) {
+          p = sc->strbuff;
+          snprintf(p,STRBUFFSIZE,"#<FOREIGN PROCEDURE %ld>", procnum(l));
+     } else if (is_continuation(l)) {
+          p = "#<CONTINUATION>";
+     } else {
+          p = "#<ERROR>";
+     }
+     *pp=p;
+     *plen=g_utf8_strlen(p, -1);
+}
+/* ========== Routines for Evaluation Cycle ========== */
+
+/* make closure. c is code. e is environment */
+static pointer mk_closure(scheme *sc, pointer c, pointer e) {
+     pointer x = get_cell(sc, c, e);
+
+     typeflag(x) = T_CLOSURE;
+     car(x) = c;
+     cdr(x) = e;
+     return (x);
+}
+
+/* make continuation. */
+static pointer mk_continuation(scheme *sc, pointer d) {
+     pointer x = get_cell(sc, sc->NIL, d);
+
+     typeflag(x) = T_CONTINUATION;
+     cont_dump(x) = d;
+     return (x);
+}
+
+static pointer list_star(scheme *sc, pointer d) {
+  pointer p, q;
+  if(cdr(d)==sc->NIL) {
+    return car(d);
+  }
+  p=cons(sc,car(d),cdr(d));
+  q=p;
+  while(cdr(cdr(p))!=sc->NIL) {
+    d=cons(sc,car(p),cdr(p));
+    if(cdr(cdr(p))!=sc->NIL) {
+      p=cdr(d);
+    }
+  }
+  cdr(p)=car(cdr(p));
+  return q;
+}
+
+/* reverse list -- produce new list */
+static pointer reverse(scheme *sc, pointer a) {
+/* a must be checked by gc */
+     pointer p = sc->NIL;
+
+     for ( ; is_pair(a); a = cdr(a)) {
+          p = cons(sc, car(a), p);
+     }
+     return (p);
+}
+
+/* reverse list --- in-place */
+static pointer reverse_in_place(scheme *sc, pointer term, pointer list) {
+     pointer p = list, result = term, q;
+
+     while (p != sc->NIL) {
+          q = cdr(p);
+          cdr(p) = result;
+          result = p;
+          p = q;
+     }
+     return (result);
+}
+
+/* append list -- produce new list */
+static pointer revappend(scheme *sc, pointer a, pointer b) {
+    pointer result = a;
+    pointer p = b;
+
+    while (is_pair(p)) {
+        result = cons(sc, car(p), result);
+        p = cdr(p);
+    }
+
+    if (p == sc->NIL) {
+        return result;
+    }
+
+    return sc->F;   /* signal an error */
+}
+
+/* equivalence of atoms */
+int eqv(pointer a, pointer b) {
+     if (is_string(a)) {
+          if (is_string(b))
+               return (strvalue(a) == strvalue(b));
+          else
+               return (0);
+     } else if (is_number(a)) {
+          if (is_number(b)) {
+               if (num_is_integer(a) == num_is_integer(b))
+                    return num_eq(nvalue(a),nvalue(b));
+          }
+          return (0);
+     } else if (is_character(a)) {
+          if (is_character(b))
+               return charvalue(a)==charvalue(b);
+          else
+               return (0);
+     } else if (is_port(a)) {
+          if (is_port(b))
+               return a==b;
+          else
+               return (0);
+     } else if (is_proc(a)) {
+          if (is_proc(b))
+               return procnum(a)==procnum(b);
+          else
+               return (0);
+     } else {
+          return (a == b);
+     }
+}
+
+/* true or false value macro */
+/* () is #t in R5RS */
+#define is_true(p)       ((p) != sc->F)
+#define is_false(p)      ((p) == sc->F)
+
+/* ========== Environment implementation  ========== */
+
+#if !defined(USE_ALIST_ENV) || !defined(USE_OBJECT_LIST)
+
+static int hash_fn(const char *key, int table_size)
+{
+  unsigned int hashed = 0;
+  const char *c;
+  int bits_per_int = sizeof(unsigned int)*8;
+
+  for (c = key; *c; c++) {
+    /* letters have about 5 bits in them */
+    hashed = (hashed<<5) | (hashed>>(bits_per_int-5));
+    hashed ^= *c;
+  }
+  return hashed % table_size;
+}
+#endif
+
+#ifndef USE_ALIST_ENV
+
+/*
+ * In this implementation, each frame of the environment may be
+ * a hash table: a vector of alists hashed by variable name.
+ * In practice, we use a vector only for the initial frame;
+ * subsequent frames are too small and transient for the lookup
+ * speed to out-weigh the cost of making a new vector.
+ */
+
+static void new_frame_in_env(scheme *sc, pointer old_env)
+{
+  pointer new_frame;
+
+  /* The interaction-environment has about 300 variables in it. */
+  if (old_env == sc->NIL) {
+    new_frame = mk_vector(sc, 461);
+  } else {
+    new_frame = sc->NIL;
+  }
+
+  sc->envir = immutable_cons(sc, new_frame, old_env);
+  setenvironment(sc->envir);
+}
+
+static INLINE void new_slot_spec_in_env(scheme *sc, pointer env,
+                                        pointer variable, pointer value)
+{
+  pointer slot = immutable_cons(sc, variable, value);
+
+  if (is_vector(car(env))) {
+    int location = hash_fn(symname(variable), ivalue_unchecked(car(env)));
+
+    set_vector_elem(car(env), location,
+                    immutable_cons(sc, slot, vector_elem(car(env), location)));
+  } else {
+    car(env) = immutable_cons(sc, slot, car(env));
+  }
+}
+
+static pointer find_slot_in_env(scheme *sc, pointer env, pointer hdl, int all)
+{
+  pointer x,y;
+  int location;
+
+  for (x = env; x != sc->NIL; x = cdr(x)) {
+    if (is_vector(car(x))) {
+      location = hash_fn(symname(hdl), ivalue_unchecked(car(x)));
+      y = vector_elem(car(x), location);
+    } else {
+      y = car(x);
+    }
+    for ( ; y != sc->NIL; y = cdr(y)) {
+              if (caar(y) == hdl) {
+                   break;
+              }
+         }
+         if (y != sc->NIL) {
+              break;
+         }
+         if(!all) {
+           return sc->NIL;
+         }
+    }
+    if (x != sc->NIL) {
+          return car(y);
+    }
+    return sc->NIL;
+}
+
+#else /* USE_ALIST_ENV */
+
+static INLINE void new_frame_in_env(scheme *sc, pointer old_env)
+{
+  sc->envir = immutable_cons(sc, sc->NIL, old_env);
+  setenvironment(sc->envir);
+}
+
+static INLINE void new_slot_spec_in_env(scheme *sc, pointer env,
+                                        pointer variable, pointer value)
+{
+  car(env) = immutable_cons(sc, immutable_cons(sc, variable, value), car(env));
+}
+
+static pointer find_slot_in_env(scheme *sc, pointer env, pointer hdl, int all)
+{
+    pointer x,y;
+    for (x = env; x != sc->NIL; x = cdr(x)) {
+         for (y = car(x); y != sc->NIL; y = cdr(y)) {
+              if (caar(y) == hdl) {
+                   break;
+              }
+         }
+         if (y != sc->NIL) {
+              break;
+         }
+         if(!all) {
+           return sc->NIL;
+         }
+    }
+    if (x != sc->NIL) {
+          return car(y);
+    }
+    return sc->NIL;
+}
+
+#endif /* USE_ALIST_ENV else */
+
+static INLINE void new_slot_in_env(scheme *sc, pointer variable, pointer value)
+{
+  new_slot_spec_in_env(sc, sc->envir, variable, value);
+}
+
+static INLINE void set_slot_in_env(scheme *sc, pointer slot, pointer value)
+{
+  cdr(slot) = value;
+}
+
+static INLINE pointer slot_value_in_env(pointer slot)
+{
+  return cdr(slot);
+}
+
+/* ========== Evaluation Cycle ========== */
+
+
+static pointer _Error_1(scheme *sc, const char *s, pointer a) {
+     const char *str = s;
+#if USE_ERROR_HOOK
+     pointer x;
+     pointer hdl=sc->ERROR_HOOK;
+#endif
+
+#if SHOW_ERROR_LINE
+     char sbuf[STRBUFFSIZE];
+
+     /* make sure error is not in REPL */
+     if (sc->load_stack[sc->file_i].kind & port_file &&
+         sc->load_stack[sc->file_i].rep.stdio.file != stdin) {
+       int ln = sc->load_stack[sc->file_i].rep.stdio.curr_line;
+       const char *fname = sc->load_stack[sc->file_i].rep.stdio.filename;
+
+       /* should never happen */
+       if(!fname) fname = "<unknown>";
+
+       /* we started from 0 */
+       ln++;
+       snprintf(sbuf, STRBUFFSIZE, "(%s : %i) %s", fname, ln, s);
+
+       str = (const char*)sbuf;
+     }
+#endif
+
+#if USE_ERROR_HOOK
+     x=find_slot_in_env(sc,sc->envir,hdl,1);
+    if (x != sc->NIL) {
+         if(a!=0) {
+               sc->code = cons(sc, cons(sc, sc->QUOTE, cons(sc,(a), sc->NIL)), sc->NIL);
+         } else {
+               sc->code = sc->NIL;
+         }
+         sc->code = cons(sc, mk_string(sc, str), sc->code);
+         setimmutable(car(sc->code));
+         sc->code = cons(sc, slot_value_in_env(x), sc->code);
+         sc->op = (int)OP_EVAL;
+         return sc->T;
+    }
+#endif
+
+    if(a!=0) {
+          sc->args = cons(sc, (a), sc->NIL);
+    } else {
+          sc->args = sc->NIL;
+    }
+    sc->args = cons(sc, mk_string(sc, str), sc->args);
+    setimmutable(car(sc->args));
+    sc->op = (int)OP_ERR0;
+    return sc->T;
+}
+#define Error_1(sc,s,a)  return _Error_1(sc,s,a)
+#define Error_0(sc,s)    return _Error_1(sc,s,0)
+
+/* Too small to turn into function */
+# define  BEGIN     do {
+# define  END  } while (0)
+#define s_goto(sc,a) BEGIN                                  \
+    sc->op = (int)(a);                                      \
+    return sc->T; END
+
+#define s_return(sc,a) return _s_return(sc,a)
+
+#ifndef USE_SCHEME_STACK
+
+/* this structure holds all the interpreter's registers */
+struct dump_stack_frame {
+  enum scheme_opcodes op;
+  pointer args;
+  pointer envir;
+  pointer code;
+};
+
+#define STACK_GROWTH 3
+
+static void s_save(scheme *sc, enum scheme_opcodes op, pointer args, pointer code)
+{
+  int nframes = (int)sc->dump;
+  struct dump_stack_frame *next_frame;
+
+  /* enough room for the next frame? */
+  if (nframes >= sc->dump_size) {
+    sc->dump_size += STACK_GROWTH;
+    /* alas there is no sc->realloc */
+    sc->dump_base = realloc(sc->dump_base,
+                            sizeof(struct dump_stack_frame) * sc->dump_size);
+  }
+  next_frame = (struct dump_stack_frame *)sc->dump_base + nframes;
+  next_frame->op = op;
+  next_frame->args = args;
+  next_frame->envir = sc->envir;
+  next_frame->code = code;
+  sc->dump = (pointer)(nframes+1);
+}
+
+static pointer _s_return(scheme *sc, pointer a)
+{
+  int nframes = (int)sc->dump;
+  struct dump_stack_frame *frame;
+
+  sc->value = (a);
+  if (nframes <= 0) {
+    return sc->NIL;
+  }
+  nframes--;
+  frame = (struct dump_stack_frame *)sc->dump_base + nframes;
+  sc->op = frame->op;
+  sc->args = frame->args;
+  sc->envir = frame->envir;
+  sc->code = frame->code;
+  sc->dump = (pointer)nframes;
+  return sc->T;
+}
+
+static INLINE void dump_stack_reset(scheme *sc)
+{
+  /* in this implementation, sc->dump is the number of frames on the stack */
+  sc->dump = (pointer)0;
+}
+
+static INLINE void dump_stack_initialize(scheme *sc)
+{
+  sc->dump_size = 0;
+  sc->dump_base = NULL;
+  dump_stack_reset(sc);
+}
+
+static void dump_stack_free(scheme *sc)
+{
+  free(sc->dump_base);
+  sc->dump_base = NULL;
+  sc->dump = (pointer)0;
+  sc->dump_size = 0;
+}
+
+static INLINE void dump_stack_mark(scheme *sc)
+{
+  int nframes = (int)sc->dump;
+  int i;
+  for(i=0; i<nframes; i++) {
+    struct dump_stack_frame *frame;
+    frame = (struct dump_stack_frame *)sc->dump_base + i;
+    mark(frame->args);
+    mark(frame->envir);
+    mark(frame->code);
+  }
+}
+
+#else
+
+static INLINE void dump_stack_reset(scheme *sc)
+{
+  sc->dump = sc->NIL;
+}
+
+static INLINE void dump_stack_initialize(scheme *sc)
+{
+  dump_stack_reset(sc);
+}
+
+static void dump_stack_free(scheme *sc)
+{
+  sc->dump = sc->NIL;
+}
+
+static pointer _s_return(scheme *sc, pointer a) {
+    sc->value = (a);
+    if(sc->dump==sc->NIL) return sc->NIL;
+    sc->op = ivalue(car(sc->dump));
+    sc->args = cadr(sc->dump);
+    sc->envir = caddr(sc->dump);
+    sc->code = cadddr(sc->dump);
+    sc->dump = cddddr(sc->dump);
+    return sc->T;
+}
+
+static void s_save(scheme *sc, enum scheme_opcodes op, pointer args, pointer code) {
+    sc->dump = cons(sc, sc->envir, cons(sc, (code), sc->dump));
+    sc->dump = cons(sc, (args), sc->dump);
+    sc->dump = cons(sc, mk_integer(sc, (long)(op)), sc->dump);
+}
+
+static INLINE void dump_stack_mark(scheme *sc)
+{
+  mark(sc->dump);
+}
+#endif
+
+#define s_retbool(tf)    s_return(sc,(tf) ? sc->T : sc->F)
+
+static pointer opexe_0(scheme *sc, enum scheme_opcodes op) {
+     pointer x, y;
+
+     switch (op) {
+     case OP_LOAD:       /* load */
+          if(file_interactive(sc)) {
+               fprintf(sc->outport->_object._port->rep.stdio.file,
+                       "Loading %s\n", strvalue(car(sc->args)));
+          }
+          if (!file_push(sc,strvalue(car(sc->args)))) {
+               Error_1(sc,"unable to open", car(sc->args));
+          }
+          else
+          {
+            sc->args = mk_integer(sc,sc->file_i);
+            s_goto(sc,OP_T0LVL);
+          }
+
+     case OP_T0LVL: /* top level */
+       /* If we reached the end of file, this loop is done. */
+       if(sc->loadport->_object._port->kind & port_saw_EOF)
+         {
+           if(sc->file_i == 0)
+             {
+               sc->args=sc->NIL;
+               s_goto(sc,OP_QUIT);
+             }
+           else
+             {
+               file_pop(sc);
+               s_return(sc,sc->value);
+             }
+           /* NOTREACHED */
+         }
+
+       /* If interactive, be nice to user. */
+       if(file_interactive(sc))
+         {
+           sc->envir = sc->global_env;
+           dump_stack_reset(sc);
+           putstr(sc,"\n");
+           putstr(sc,prompt);
+         }
+
+       /* Set up another iteration of REPL */
+       sc->nesting=0;
+       sc->save_inport=sc->inport;
+       sc->inport = sc->loadport;
+       s_save(sc,OP_T0LVL, sc->NIL, sc->NIL);
+       s_save(sc,OP_VALUEPRINT, sc->NIL, sc->NIL);
+       s_save(sc,OP_T1LVL, sc->NIL, sc->NIL);
+       s_goto(sc,OP_READ_INTERNAL);
+
+     case OP_T1LVL: /* top level */
+          sc->code = sc->value;
+          sc->inport=sc->save_inport;
+          s_goto(sc,OP_EVAL);
+
+     case OP_READ_INTERNAL:       /* internal read */
+          sc->tok = token(sc);
+          if(sc->tok==TOK_EOF)
+            { s_return(sc,sc->EOF_OBJ); }
+          s_goto(sc,OP_RDSEXPR);
+
+     case OP_GENSYM:
+          s_return(sc, gensym(sc));
+
+     case OP_VALUEPRINT: /* print evaluation result */
+          /* OP_VALUEPRINT is always pushed, because when changing from
+             non-interactive to interactive mode, it needs to be
+             already on the stack */
+       if(sc->tracing) {
+         putstr(sc,"\nGives: ");
+       }
+       if(file_interactive(sc) || sc->print_output) {
+         sc->print_flag = 1;
+         sc->args = sc->value;
+         s_goto(sc,OP_P0LIST);
+       } else {
+         s_return(sc,sc->value);
+       }
+
+     case OP_EVAL:       /* main part of evaluation */
+#if USE_TRACING
+       if(sc->tracing) {
+         /*s_save(sc,OP_VALUEPRINT,sc->NIL,sc->NIL);*/
+         s_save(sc,OP_REAL_EVAL,sc->args,sc->code);
+         sc->args=sc->code;
+         putstr(sc,"\nEval: ");
+         s_goto(sc,OP_P0LIST);
+       }
+       /* fall through */
+     case OP_REAL_EVAL:
+#endif
+          if (is_symbol(sc->code)) {    /* symbol */
+               x=find_slot_in_env(sc,sc->envir,sc->code,1);
+               if (x != sc->NIL) {
+                    s_return(sc,slot_value_in_env(x));
+               } else {
+                    Error_1(sc,"eval: unbound variable:", sc->code);
+               }
+          } else if (is_pair(sc->code)) {
+               if (is_syntax(x = car(sc->code))) {     /* SYNTAX */
+                    sc->code = cdr(sc->code);
+                    s_goto(sc,syntaxnum(x));
+               } else {/* first, eval top element and eval arguments */
+                    s_save(sc,OP_E0ARGS, sc->NIL, sc->code);
+                    /* If no macros => s_save(sc,OP_E1ARGS, sc->NIL, cdr(sc->code));*/
+                    sc->code = car(sc->code);
+                    s_goto(sc,OP_EVAL);
+               }
+          } else {
+               s_return(sc,sc->code);
+          }
+
+     case OP_E0ARGS:     /* eval arguments */
+          if (is_macro(sc->value)) {    /* macro expansion */
+               s_save(sc,OP_DOMACRO, sc->NIL, sc->NIL);
+               sc->args = cons(sc,sc->code, sc->NIL);
+               sc->code = sc->value;
+               s_goto(sc,OP_APPLY);
+          } else {
+               sc->code = cdr(sc->code);
+               s_goto(sc,OP_E1ARGS);
+          }
+
+     case OP_E1ARGS:     /* eval arguments */
+          sc->args = cons(sc, sc->value, sc->args);
+          if (is_pair(sc->code)) { /* continue */
+               s_save(sc,OP_E1ARGS, sc->args, cdr(sc->code));
+               sc->code = car(sc->code);
+               sc->args = sc->NIL;
+               s_goto(sc,OP_EVAL);
+          } else {  /* end */
+               sc->args = reverse_in_place(sc, sc->NIL, sc->args);
+               sc->code = car(sc->args);
+               sc->args = cdr(sc->args);
+               s_goto(sc,OP_APPLY);
+          }
+
+#if USE_TRACING
+     case OP_TRACING: {
+       int tr=sc->tracing;
+       sc->tracing=ivalue(car(sc->args));
+       s_return(sc,mk_integer(sc,tr));
+     }
+#endif
+
+     case OP_APPLY:      /* apply 'code' to 'args' */
+#if USE_TRACING
+       if(sc->tracing) {
+         s_save(sc,OP_REAL_APPLY,sc->args,sc->code);
+         sc->print_flag = 1;
+         /*  sc->args=cons(sc,sc->code,sc->args);*/
+         putstr(sc,"\nApply to: ");
+         s_goto(sc,OP_P0LIST);
+       }
+       /* fall through */
+     case OP_REAL_APPLY:
+#endif
+          if (is_proc(sc->code)) {
+               s_goto(sc,procnum(sc->code));   /* PROCEDURE */
+          } else if (is_foreign(sc->code))
+          {
+               /* Keep nested calls from GC'ing the arglist */
+               push_recent_alloc(sc,sc->args,sc->NIL);
+               sc->foreign_error = sc->NIL;
+               x=sc->code->_object._ff(sc,sc->args);
+               if (sc->foreign_error == sc->NIL) {
+                   s_return(sc,x);
+               } else {
+                   x = sc->foreign_error;
+                   sc->foreign_error = sc->NIL;
+                   Error_1 (sc, string_value (car (x)), cdr (x));
+               }
+          } else if (is_closure(sc->code) || is_macro(sc->code)
+                     || is_promise(sc->code)) { /* CLOSURE */
+            /* Should not accept promise */
+               /* make environment */
+               new_frame_in_env(sc, closure_env(sc->code));
+               for (x = car(closure_code(sc->code)), y = sc->args;
+                    is_pair(x); x = cdr(x), y = cdr(y)) {
+                    if (y == sc->NIL) {
+                         Error_0(sc,"not enough arguments");
+                    } else {
+                         new_slot_in_env(sc, car(x), car(y));
+                    }
+               }
+               if (x == sc->NIL) {
+                    /*--
+                     * if (y != sc->NIL) {
+                     *   Error_0(sc,"too many arguments");
+                     * }
+                     */
+               } else if (is_symbol(x))
+                    new_slot_in_env(sc, x, y);
+               else {
+                    Error_1(sc,"syntax error in closure: not a symbol:", x);
+               }
+               sc->code = cdr(closure_code(sc->code));
+               sc->args = sc->NIL;
+               s_goto(sc,OP_BEGIN);
+          } else if (is_continuation(sc->code)) { /* CONTINUATION */
+               sc->dump = cont_dump(sc->code);
+               s_return(sc,sc->args != sc->NIL ? car(sc->args) : sc->NIL);
+          } else {
+               Error_0(sc,"illegal function");
+          }
+
+     case OP_DOMACRO:    /* do macro */
+          sc->code = sc->value;
+          s_goto(sc,OP_EVAL);
+
+#if 1
+     case OP_LAMBDA:     /* lambda */
+          /* If the hook is defined, apply it to sc->code, otherwise
+             set sc->value fall thru */
+          {
+               pointer f=find_slot_in_env(sc,sc->envir,sc->COMPILE_HOOK,1);
+               if(f==sc->NIL) {
+                    sc->value = sc->code;
+                    /* Fallthru */
+               } else {
+                    s_save(sc,OP_LAMBDA1,sc->args,sc->code);
+                    sc->args=cons(sc,sc->code,sc->NIL);
+                    sc->code=slot_value_in_env(f);
+                    s_goto(sc,OP_APPLY);
+               }
+          }
+
+     case OP_LAMBDA1:
+          s_return(sc,mk_closure(sc, sc->value, sc->envir));
+
+#else
+     case OP_LAMBDA:     /* lambda */
+          s_return(sc,mk_closure(sc, sc->code, sc->envir));
+
+#endif
+
+     case OP_MKCLOSURE: /* make-closure */
+       x=car(sc->args);
+       if(car(x)==sc->LAMBDA) {
+         x=cdr(x);
+       }
+       if(cdr(sc->args)==sc->NIL) {
+         y=sc->envir;
+       } else {
+         y=cadr(sc->args);
+       }
+       s_return(sc,mk_closure(sc, x, y));
+
+     case OP_QUOTE:      /* quote */
+          s_return(sc,car(sc->code));
+
+     case OP_DEF0:  /* define */
+          if(is_immutable(car(sc->code)))
+                Error_1(sc,"define: unable to alter immutable", car(sc->code));
+
+          if (is_pair(car(sc->code))) {
+               x = caar(sc->code);
+               sc->code = cons(sc, sc->LAMBDA, cons(sc, cdar(sc->code), cdr(sc->code)));
+          } else {
+               x = car(sc->code);
+               sc->code = cadr(sc->code);
+          }
+          if (!is_symbol(x)) {
+               Error_0(sc,"variable is not a symbol");
+          }
+          s_save(sc,OP_DEF1, sc->NIL, x);
+          s_goto(sc,OP_EVAL);
+
+     case OP_DEF1:  /* define */
+          x=find_slot_in_env(sc,sc->envir,sc->code,0);
+          if (x != sc->NIL) {
+               set_slot_in_env(sc, x, sc->value);
+          } else {
+               new_slot_in_env(sc, sc->code, sc->value);
+          }
+          s_return(sc,sc->code);
+
+
+     case OP_DEFP:  /* defined? */
+          x=sc->envir;
+          if(cdr(sc->args)!=sc->NIL) {
+               x=cadr(sc->args);
+          }
+          s_retbool(find_slot_in_env(sc,x,car(sc->args),1)!=sc->NIL);
+
+     case OP_SET0:       /* set! */
+          if(is_immutable(car(sc->code)))
+                Error_1(sc,"set!: unable to alter immutable variable",car(sc->code));
+          s_save(sc,OP_SET1, sc->NIL, car(sc->code));
+          sc->code = cadr(sc->code);
+          s_goto(sc,OP_EVAL);
+
+     case OP_SET1:       /* set! */
+          y=find_slot_in_env(sc,sc->envir,sc->code,1);
+          if (y != sc->NIL) {
+             set_slot_in_env(sc, y, sc->value);
+             s_return(sc,sc->value);
+          } else {
+             Error_1(sc,"set!: unbound variable:", sc->code);
+          }
+
+     case OP_BEGIN:      /* begin */
+          if (!is_pair(sc->code)) {
+               s_return(sc,sc->code);
+          }
+          if (cdr(sc->code) != sc->NIL) {
+               s_save(sc,OP_BEGIN, sc->NIL, cdr(sc->code));
+          }
+          sc->code = car(sc->code);
+          s_goto(sc,OP_EVAL);
+
+     case OP_IF0:        /* if */
+          s_save(sc,OP_IF1, sc->NIL, cdr(sc->code));
+          sc->code = car(sc->code);
+          s_goto(sc,OP_EVAL);
+
+     case OP_IF1:        /* if */
+          if (is_true(sc->value))
+               sc->code = car(sc->code);
+          else
+               sc->code = cadr(sc->code);  /* (if #f 1) ==> () because
+                                            * car(sc->NIL) = sc->NIL */
+          s_goto(sc,OP_EVAL);
+
+     case OP_LET0:       /* let */
+          sc->args = sc->NIL;
+          sc->value = sc->code;
+          sc->code = is_symbol(car(sc->code)) ? cadr(sc->code) : car(sc->code);
+          s_goto(sc,OP_LET1);
+
+     case OP_LET1:       /* let (calculate parameters) */
+          sc->args = cons(sc, sc->value, sc->args);
+          if (is_pair(sc->code)) { /* continue */
+               if (!is_pair(car(sc->code)) || !is_pair(cdar(sc->code))) {
+                    Error_1(sc, "Bad syntax of binding spec in let :", car(sc->code));
+               }
+               s_save(sc,OP_LET1, sc->args, cdr(sc->code));
+               sc->code = cadar(sc->code);
+               sc->args = sc->NIL;
+               s_goto(sc,OP_EVAL);
+          } else {  /* end */
+               sc->args = reverse_in_place(sc, sc->NIL, sc->args);
+               sc->code = car(sc->args);
+               sc->args = cdr(sc->args);
+               s_goto(sc,OP_LET2);
+          }
+
+     case OP_LET2:       /* let */
+          new_frame_in_env(sc, sc->envir);
+          for (x = is_symbol(car(sc->code)) ? cadr(sc->code) : car(sc->code), y = sc->args;
+               y != sc->NIL; x = cdr(x), y = cdr(y)) {
+               new_slot_in_env(sc, caar(x), car(y));
+          }
+          if (is_symbol(car(sc->code))) {    /* named let */
+               for (x = cadr(sc->code), sc->args = sc->NIL; x != sc->NIL; x = cdr(x)) {
+                    if (!is_pair(x))
+                        Error_1(sc, "Bad syntax of binding in let :", x);
+                    if (!is_list(sc, car(x)))
+                        Error_1(sc, "Bad syntax of binding in let :", car(x));
+                    sc->args = cons(sc, caar(x), sc->args);
+               }
+               x = mk_closure(sc, cons(sc, reverse_in_place(sc, sc->NIL, sc->args), cddr(sc->code)), sc->envir);
+               new_slot_in_env(sc, car(sc->code), x);
+               sc->code = cddr(sc->code);
+               sc->args = sc->NIL;
+          } else {
+               sc->code = cdr(sc->code);
+               sc->args = sc->NIL;
+          }
+          s_goto(sc,OP_BEGIN);
+
+     case OP_LET0AST:    /* let* */
+          if (car(sc->code) == sc->NIL) {
+               new_frame_in_env(sc, sc->envir);
+               sc->code = cdr(sc->code);
+               s_goto(sc,OP_BEGIN);
+          }
+          if(!is_pair(car(sc->code)) || !is_pair(caar(sc->code)) || !is_pair(cdaar(sc->code))) {
+               Error_1(sc,"Bad syntax of binding spec in let* :",car(sc->code));
+          }
+          s_save(sc,OP_LET1AST, cdr(sc->code), car(sc->code));
+          sc->code = cadaar(sc->code);
+          s_goto(sc,OP_EVAL);
+
+     case OP_LET1AST:    /* let* (make new frame) */
+          new_frame_in_env(sc, sc->envir);
+          s_goto(sc,OP_LET2AST);
+
+     case OP_LET2AST:    /* let* (calculate parameters) */
+          new_slot_in_env(sc, caar(sc->code), sc->value);
+          sc->code = cdr(sc->code);
+          if (is_pair(sc->code)) { /* continue */
+               s_save(sc,OP_LET2AST, sc->args, sc->code);
+               sc->code = cadar(sc->code);
+               sc->args = sc->NIL;
+               s_goto(sc,OP_EVAL);
+          } else {  /* end */
+               sc->code = sc->args;
+               sc->args = sc->NIL;
+               s_goto(sc,OP_BEGIN);
+          }
+     default:
+          snprintf(sc->strbuff,STRBUFFSIZE,"%d: illegal operator", sc->op);
+          Error_0(sc,sc->strbuff);
+     }
+     return sc->T;
+}
+
+static pointer opexe_1(scheme *sc, enum scheme_opcodes op) {
+     pointer x, y;
+
+     switch (op) {
+     case OP_LET0REC:    /* letrec */
+          new_frame_in_env(sc, sc->envir);
+          sc->args = sc->NIL;
+          sc->value = sc->code;
+          sc->code = car(sc->code);
+          s_goto(sc,OP_LET1REC);
+
+     case OP_LET1REC:    /* letrec (calculate parameters) */
+          sc->args = cons(sc, sc->value, sc->args);
+          if (is_pair(sc->code)) { /* continue */
+               if (!is_pair(car(sc->code)) || !is_pair(cdar(sc->code))) {
+                    Error_1(sc,"Bad syntax of binding spec in letrec :",car(sc->code));
+               }
+               s_save(sc,OP_LET1REC, sc->args, cdr(sc->code));
+               sc->code = cadar(sc->code);
+               sc->args = sc->NIL;
+               s_goto(sc,OP_EVAL);
+          } else {  /* end */
+               sc->args = reverse_in_place(sc, sc->NIL, sc->args);
+               sc->code = car(sc->args);
+               sc->args = cdr(sc->args);
+               s_goto(sc,OP_LET2REC);
+          }
+
+     case OP_LET2REC:    /* letrec */
+          for (x = car(sc->code), y = sc->args; y != sc->NIL; x = cdr(x), y = cdr(y)) {
+               new_slot_in_env(sc, caar(x), car(y));
+          }
+          sc->code = cdr(sc->code);
+          sc->args = sc->NIL;
+          s_goto(sc,OP_BEGIN);
+
+     case OP_COND0:      /* cond */
+          if (!is_pair(sc->code)) {
+               Error_0(sc,"syntax error in cond");
+          }
+          s_save(sc,OP_COND1, sc->NIL, sc->code);
+          sc->code = caar(sc->code);
+          s_goto(sc,OP_EVAL);
+
+     case OP_COND1:      /* cond */
+          if (is_true(sc->value)) {
+               if ((sc->code = cdar(sc->code)) == sc->NIL) {
+                    s_return(sc,sc->value);
+               }
+               if(!sc->code) {
+                    Error_0(sc,"syntax error in cond");
+               }
+               if(car(sc->code)==sc->FEED_TO) {
+                    if(!is_pair(cdr(sc->code))) {
+                         Error_0(sc,"syntax error in cond");
+                    }
+                    x=cons(sc, sc->QUOTE, cons(sc, sc->value, sc->NIL));
+                    sc->code=cons(sc,cadr(sc->code),cons(sc,x,sc->NIL));
+                    s_goto(sc,OP_EVAL);
+               }
+               s_goto(sc,OP_BEGIN);
+          } else {
+               if ((sc->code = cdr(sc->code)) == sc->NIL) {
+                    s_return(sc,sc->NIL);
+               } else {
+                    s_save(sc,OP_COND1, sc->NIL, sc->code);
+                    sc->code = caar(sc->code);
+                    s_goto(sc,OP_EVAL);
+               }
+          }
+
+     case OP_DELAY:      /* delay */
+          x = mk_closure(sc, cons(sc, sc->NIL, sc->code), sc->envir);
+          typeflag(x)=T_PROMISE;
+          s_return(sc,x);
+
+     case OP_AND0:       /* and */
+          if (sc->code == sc->NIL) {
+               s_return(sc,sc->T);
+          }
+          s_save(sc,OP_AND1, sc->NIL, cdr(sc->code));
+          sc->code = car(sc->code);
+          s_goto(sc,OP_EVAL);
+
+     case OP_AND1:       /* and */
+          if (is_false(sc->value)) {
+               s_return(sc,sc->value);
+          } else if (sc->code == sc->NIL) {
+               s_return(sc,sc->value);
+          } else {
+               s_save(sc,OP_AND1, sc->NIL, cdr(sc->code));
+               sc->code = car(sc->code);
+               s_goto(sc,OP_EVAL);
+          }
+
+     case OP_OR0:        /* or */
+          if (sc->code == sc->NIL) {
+               s_return(sc,sc->F);
+          }
+          s_save(sc,OP_OR1, sc->NIL, cdr(sc->code));
+          sc->code = car(sc->code);
+          s_goto(sc,OP_EVAL);
+
+     case OP_OR1:        /* or */
+          if (is_true(sc->value)) {
+               s_return(sc,sc->value);
+          } else if (sc->code == sc->NIL) {
+               s_return(sc,sc->value);
+          } else {
+               s_save(sc,OP_OR1, sc->NIL, cdr(sc->code));
+               sc->code = car(sc->code);
+               s_goto(sc,OP_EVAL);
+          }
+
+     case OP_C0STREAM:   /* cons-stream */
+          s_save(sc,OP_C1STREAM, sc->NIL, cdr(sc->code));
+          sc->code = car(sc->code);
+          s_goto(sc,OP_EVAL);
+
+     case OP_C1STREAM:   /* cons-stream */
+          sc->args = sc->value;  /* save sc->value to register sc->args for gc */
+          x = mk_closure(sc, cons(sc, sc->NIL, sc->code), sc->envir);
+          typeflag(x)=T_PROMISE;
+          s_return(sc,cons(sc, sc->args, x));
+
+     case OP_MACRO0:     /* macro */
+          if (is_pair(car(sc->code))) {
+               x = caar(sc->code);
+               sc->code = cons(sc, sc->LAMBDA, cons(sc, cdar(sc->code), cdr(sc->code)));
+          } else {
+               x = car(sc->code);
+               sc->code = cadr(sc->code);
+          }
+          if (!is_symbol(x)) {
+               Error_0(sc,"variable is not a symbol");
+          }
+          s_save(sc,OP_MACRO1, sc->NIL, x);
+          s_goto(sc,OP_EVAL);
+
+     case OP_MACRO1:     /* macro */
+          typeflag(sc->value) = T_MACRO;
+          x = find_slot_in_env(sc, sc->envir, sc->code, 0);
+          if (x != sc->NIL) {
+               set_slot_in_env(sc, x, sc->value);
+          } else {
+               new_slot_in_env(sc, sc->code, sc->value);
+          }
+          s_return(sc,sc->code);
+
+     case OP_CASE0:      /* case */
+          s_save(sc,OP_CASE1, sc->NIL, cdr(sc->code));
+          sc->code = car(sc->code);
+          s_goto(sc,OP_EVAL);
+
+     case OP_CASE1:      /* case */
+          for (x = sc->code; x != sc->NIL; x = cdr(x)) {
+               if (!is_pair(y = caar(x))) {
+                    break;
+               }
+               for ( ; y != sc->NIL; y = cdr(y)) {
+                    if (eqv(car(y), sc->value)) {
+                         break;
+                    }
+               }
+               if (y != sc->NIL) {
+                    break;
+               }
+          }
+          if (x != sc->NIL) {
+               if (is_pair(caar(x))) {
+                    sc->code = cdar(x);
+                    s_goto(sc,OP_BEGIN);
+               } else {/* else */
+                    s_save(sc,OP_CASE2, sc->NIL, cdar(x));
+                    sc->code = caar(x);
+                    s_goto(sc,OP_EVAL);
+               }
+          } else {
+               s_return(sc,sc->NIL);
+          }
+
+     case OP_CASE2:      /* case */
+          if (is_true(sc->value)) {
+               s_goto(sc,OP_BEGIN);
+          } else {
+               s_return(sc,sc->NIL);
+          }
+
+     case OP_PAPPLY:     /* apply */
+          sc->code = car(sc->args);
+          sc->args = list_star(sc,cdr(sc->args));
+          /*sc->args = cadr(sc->args);*/
+          s_goto(sc,OP_APPLY);
+
+     case OP_PEVAL: /* eval */
+          if(cdr(sc->args)!=sc->NIL) {
+               sc->envir=cadr(sc->args);
+          }
+          sc->code = car(sc->args);
+          s_goto(sc,OP_EVAL);
+
+     case OP_CONTINUATION:    /* call-with-current-continuation */
+          sc->code = car(sc->args);
+          sc->args = cons(sc, mk_continuation(sc, sc->dump), sc->NIL);
+          s_goto(sc,OP_APPLY);
+
+     default:
+          snprintf(sc->strbuff,STRBUFFSIZE,"%d: illegal operator", sc->op);
+          Error_0(sc,sc->strbuff);
+     }
+     return sc->T;
+}
+
+static pointer opexe_2(scheme *sc, enum scheme_opcodes op) {
+     pointer x;
+     num v;
+#if USE_MATH
+     double dd;
+#endif
+
+     switch (op) {
+#if USE_MATH
+     case OP_INEX2EX:    /* inexact->exact */
+          x=car(sc->args);
+          if(num_is_integer(x)) {
+               s_return(sc,x);
+          } else if(modf(rvalue_unchecked(x),&dd)==0.0) {
+               s_return(sc,mk_integer(sc,ivalue(x)));
+          } else {
+               Error_1(sc,"inexact->exact: not integral:",x);
+          }
+
+     case OP_EXP:
+          x=car(sc->args);
+          s_return(sc, mk_real(sc, exp(rvalue(x))));
+
+     case OP_LOG:
+          x=car(sc->args);
+          s_return(sc, mk_real(sc, log(rvalue(x))));
+
+     case OP_SIN:
+          x=car(sc->args);
+          s_return(sc, mk_real(sc, sin(rvalue(x))));
+
+     case OP_COS:
+          x=car(sc->args);
+          s_return(sc, mk_real(sc, cos(rvalue(x))));
+
+     case OP_TAN:
+          x=car(sc->args);
+          s_return(sc, mk_real(sc, tan(rvalue(x))));
+
+     case OP_ASIN:
+          x=car(sc->args);
+          s_return(sc, mk_real(sc, asin(rvalue(x))));
+
+     case OP_ACOS:
+          x=car(sc->args);
+          s_return(sc, mk_real(sc, acos(rvalue(x))));
+
+     case OP_ATAN:
+          x=car(sc->args);
+          if(cdr(sc->args)==sc->NIL) {
+               s_return(sc, mk_real(sc, atan(rvalue(x))));
+          } else {
+               pointer y=cadr(sc->args);
+               s_return(sc, mk_real(sc, atan2(rvalue(x),rvalue(y))));
+          }
+
+     case OP_SQRT:
+          x=car(sc->args);
+          s_return(sc, mk_real(sc, sqrt(rvalue(x))));
+
+     case OP_EXPT: {
+          double result;
+          int real_result=1;
+          pointer y=cadr(sc->args);
+          x=car(sc->args);
+          if (num_is_integer(x) && num_is_integer(y))
+             real_result=0;
+          /* This 'if' is an R5RS compatibility fix. */
+          /* NOTE: Remove this 'if' fix for R6RS.    */
+          if (rvalue(x) == 0 && rvalue(y) < 0) {
+             result = 0.0;
+          } else {
+             result = pow(rvalue(x),rvalue(y));
+          }
+          /* Before returning integer result make sure we can. */
+          /* If the test fails, result is too big for integer. */
+          if (!real_result)
+          {
+            long result_as_long = (long)result;
+            if (result != (double)result_as_long)
+              real_result = 1;
+          }
+          if (real_result) {
+             s_return(sc, mk_real(sc, result));
+          } else {
+             s_return(sc, mk_integer(sc, result));
+          }
+     }
+
+     case OP_FLOOR:
+          x=car(sc->args);
+          s_return(sc, mk_real(sc, floor(rvalue(x))));
+
+     case OP_CEILING:
+          x=car(sc->args);
+          s_return(sc, mk_real(sc, ceil(rvalue(x))));
+
+     case OP_TRUNCATE : {
+          double rvalue_of_x ;
+          x=car(sc->args);
+          rvalue_of_x = rvalue(x) ;
+          if (rvalue_of_x > 0) {
+            s_return(sc, mk_real(sc, floor(rvalue_of_x)));
+          } else {
+            s_return(sc, mk_real(sc, ceil(rvalue_of_x)));
+          }
+     }
+
+     case OP_ROUND:
+        x=car(sc->args);
+        if (num_is_integer(x))
+            s_return(sc, x);
+        s_return(sc, mk_real(sc, round_per_R5RS(rvalue(x))));
+#endif
+
+     case OP_ADD:        /* + */
+       v=num_zero;
+       for (x = sc->args; x != sc->NIL; x = cdr(x)) {
+         v=num_add(v,nvalue(car(x)));
+       }
+       s_return(sc,mk_number(sc, v));
+
+     case OP_MUL:        /* * */
+       v=num_one;
+       for (x = sc->args; x != sc->NIL; x = cdr(x)) {
+         v=num_mul(v,nvalue(car(x)));
+       }
+       s_return(sc,mk_number(sc, v));
+
+     case OP_SUB:        /* - */
+       if(cdr(sc->args)==sc->NIL) {
+         x=sc->args;
+         v=num_zero;
+       } else {
+         x = cdr(sc->args);
+         v = nvalue(car(sc->args));
+       }
+       for (; x != sc->NIL; x = cdr(x)) {
+         v=num_sub(v,nvalue(car(x)));
+       }
+       s_return(sc,mk_number(sc, v));
+
+     case OP_DIV:        /* / */
+       if(cdr(sc->args)==sc->NIL) {
+         x=sc->args;
+         v=num_one;
+       } else {
+         x = cdr(sc->args);
+         v = nvalue(car(sc->args));
+       }
+       for (; x != sc->NIL; x = cdr(x)) {
+         if (!is_zero_double(rvalue(car(x))))
+           v=num_div(v,nvalue(car(x)));
+         else {
+           Error_0(sc,"/: division by zero");
+         }
+       }
+       s_return(sc,mk_number(sc, v));
+
+     case OP_INTDIV:        /* quotient */
+          if(cdr(sc->args)==sc->NIL) {
+               x=sc->args;
+               v=num_one;
+          } else {
+               x = cdr(sc->args);
+               v = nvalue(car(sc->args));
+          }
+          for (; x != sc->NIL; x = cdr(x)) {
+               if (ivalue(car(x)) != 0)
+                    v=num_intdiv(v,nvalue(car(x)));
+               else {
+                    Error_0(sc,"quotient: division by zero");
+               }
+          }
+          s_return(sc,mk_number(sc, v));
+
+     case OP_REM:        /* remainder */
+          v = nvalue(car(sc->args));
+          if (ivalue(cadr(sc->args)) != 0)
+               v=num_rem(v,nvalue(cadr(sc->args)));
+          else {
+               Error_0(sc,"remainder: division by zero");
+          }
+          s_return(sc,mk_number(sc, v));
+
+     case OP_MOD:        /* modulo */
+          v = nvalue(car(sc->args));
+          if (ivalue(cadr(sc->args)) != 0)
+               v=num_mod(v,nvalue(cadr(sc->args)));
+          else {
+               Error_0(sc,"modulo: division by zero");
+          }
+          s_return(sc,mk_number(sc, v));
+
+     case OP_CAR:        /* car */
+       s_return(sc,caar(sc->args));
+
+     case OP_CDR:        /* cdr */
+       s_return(sc,cdar(sc->args));
+
+     case OP_CONS:       /* cons */
+          cdr(sc->args) = cadr(sc->args);
+          s_return(sc,sc->args);
+
+     case OP_SETCAR:     /* set-car! */
+       if(!is_immutable(car(sc->args))) {
+         caar(sc->args) = cadr(sc->args);
+         s_return(sc,car(sc->args));
+       } else {
+         Error_0(sc,"set-car!: unable to alter immutable pair");
+       }
+
+     case OP_SETCDR:     /* set-cdr! */
+       if(!is_immutable(car(sc->args))) {
+         cdar(sc->args) = cadr(sc->args);
+         s_return(sc,car(sc->args));
+       } else {
+         Error_0(sc,"set-cdr!: unable to alter immutable pair");
+       }
+
+     case OP_CHAR2INT: { /* char->integer */
+          gunichar c;
+          c=ivalue(car(sc->args));
+          s_return(sc,mk_integer(sc,c));
+     }
+
+     case OP_INT2CHAR: { /* integer->char */
+          gunichar c;
+          c=(gunichar)ivalue(car(sc->args));
+          s_return(sc,mk_character(sc,c));
+     }
+
+     case OP_CHARUPCASE: {
+          gunichar c;
+          c=(gunichar)ivalue(car(sc->args));
+          c=g_unichar_toupper(c);
+          s_return(sc,mk_character(sc,c));
+     }
+
+     case OP_CHARDNCASE: {
+          gunichar c;
+          c=(gunichar)ivalue(car(sc->args));
+          c=g_unichar_tolower(c);
+          s_return(sc,mk_character(sc,c));
+     }
+
+     case OP_STR2SYM:  /* string->symbol */
+          s_return(sc,mk_symbol(sc,strvalue(car(sc->args))));
+
+     case OP_STR2ATOM: /* string->atom */ {
+          char *s=strvalue(car(sc->args));
+          long pf = 0;
+          if(cdr(sc->args)!=sc->NIL) {
+            /* we know cadr(sc->args) is a natural number */
+            /* see if it is 2, 8, 10, or 16, or error */
+            pf = ivalue_unchecked(cadr(sc->args));
+            if(pf == 16 || pf == 10 || pf == 8 || pf == 2) {
+               /* base is OK */
+            }
+            else {
+              pf = -1;
+            }
+          }
+          if (pf < 0) {
+            Error_1(sc, "string->atom: bad base:", cadr(sc->args));
+          } else if(*s=='#') /* no use of base! */ {
+            s_return(sc, mk_sharp_const(sc, s+1));
+          } else {
+            if (pf == 0 || pf == 10) {
+              s_return(sc, mk_atom(sc, s));
+            }
+            else {
+              char *ep;
+              long iv = strtol(s,&ep,(int )pf);
+              if (*ep == 0) {
+                s_return(sc, mk_integer(sc, iv));
+              }
+              else {
+                s_return(sc, sc->F);
+              }
+            }
+          }
+        }
+
+     case OP_SYM2STR: /* symbol->string */
+          x=mk_string(sc,symname(car(sc->args)));
+          setimmutable(x);
+          s_return(sc,x);
+
+     case OP_ATOM2STR: /* atom->string */ {
+          long pf = 0;
+          x=car(sc->args);
+          if(cdr(sc->args)!=sc->NIL) {
+            /* we know cadr(sc->args) is a natural number */
+            /* see if it is 2, 8, 10, or 16, or error */
+            pf = ivalue_unchecked(cadr(sc->args));
+            if(is_number(x) && (pf == 16 || pf == 10 || pf == 8 || pf == 2)) {
+              /* base is OK */
+            }
+            else {
+              pf = -1;
+            }
+          }
+          if (pf < 0) {
+            Error_1(sc, "atom->string: bad base:", cadr(sc->args));
+          } else if(is_number(x) || is_character(x) || is_string(x) || is_symbol(x)) {
+            char *p;
+            int len;
+            atom2str(sc,x,(int )pf,&p,&len);
+            s_return(sc,mk_counted_string(sc,p,len));
+          } else {
+            Error_1(sc, "atom->string: not an atom:", x);
+          }
+        }
+
+     case OP_MKSTRING: { /* make-string */
+          gunichar fill=' ';
+          int len;
+
+          len=ivalue(car(sc->args));
+
+          if(cdr(sc->args)!=sc->NIL) {
+               fill=charvalue(cadr(sc->args));
+          }
+          s_return(sc,mk_empty_string(sc,len,fill));
+     }
+
+     case OP_STRLEN:  /* string-length */
+          s_return(sc,mk_integer(sc,g_utf8_strlen(strvalue(car(sc->args)), -1)));
+
+     case OP_STRREF: { /* string-ref */
+          char *str;
+          int index;
+
+          str=strvalue(car(sc->args));
+
+          index=ivalue(cadr(sc->args));
+
+          if(index>=g_utf8_strlen(strvalue(car(sc->args)), -1)) {
+               Error_1(sc,"string-ref: out of bounds:",cadr(sc->args));
+          }
+
+          str = g_utf8_offset_to_pointer(str, (long)index);
+          s_return(sc,mk_character(sc, g_utf8_get_char(str)));
+     }
+
+     case OP_STRSET: { /* string-set! */
+          pointer a;
+          char *str;
+          int   index;
+          gunichar c;
+          char  utf8[7];
+          int   utf8_len;
+          int   newlen;
+          char *p1, *p2;
+          int   p1_len;
+          int   p2_len;
+          char *newstr;
+
+          a=car(sc->args);
+          if(is_immutable(a)) {
+               Error_1(sc,"string-set!: unable to alter immutable string:",a);
+          }
+
+          str=strvalue(a);
+          index=ivalue(cadr(sc->args));
+          if(index>=g_utf8_strlen(str, -1)) {
+              Error_1(sc,"string-set!: out of bounds:",cadr(sc->args));
+          }
+
+          c=charvalue(caddr(sc->args));
+          utf8_len = g_unichar_to_utf8(c, utf8);
+
+          p1 = g_utf8_offset_to_pointer(str, (long)index);
+          p2 = g_utf8_offset_to_pointer(str, (long)index+1);
+          p1_len = p1-str;
+          p2_len = strlen(p2);
+
+          newlen = p1_len+utf8_len+p2_len;
+          newstr = (char *)sc->malloc(newlen+1);
+          if (newstr == NULL) {
+             sc->no_memory=1;
+             Error_1(sc,"string-set!: No memory to alter string:",car(sc->args));
+          }
+
+          if (p1_len > 0)
+             memcpy(newstr, str, p1_len);
+          memcpy(newstr+p1_len, utf8, utf8_len);
+          if (p2_len > 0)
+             memcpy(newstr+p1_len+utf8_len, p2, p2_len);
+          newstr[newlen] = '\0';
+
+          free(strvalue(a));
+          strvalue(a)=newstr;
+          strlength(a)=g_utf8_strlen(newstr, -1);
+
+          s_return(sc,a);
+     }
+
+     case OP_STRAPPEND: { /* string-append */
+       /* in 1.29 string-append was in Scheme in init.scm but was too slow */
+       int len = 0;
+       pointer car_x;
+       char *newstr;
+       char *pos;
+       char *end;
+
+       /* compute needed length for new string */
+       for (x = sc->args; x != sc->NIL; x = cdr(x)) {
+          car_x = car(x);
+          end = g_utf8_offset_to_pointer(strvalue(car_x), (long)strlength(car_x));
+          len += end - strvalue(car_x);
+       }
+
+       newstr = (char *)sc->malloc(len+1);
+       if (newstr == NULL) {
+          sc->no_memory=1;
+          Error_1(sc,"string-set!: No memory to append strings:",car(sc->args));
+       }
+
+       /* store the contents of the argument strings into the new string */
+       pos = newstr;
+       for (x = sc->args; x != sc->NIL; x = cdr(x)) {
+           car_x = car(x);
+           end = g_utf8_offset_to_pointer(strvalue(car_x), (long)strlength(car_x));
+           len = end - strvalue(car_x);
+           memcpy(pos, strvalue(car_x), len);
+           pos += len;
+       }
+       *pos = '\0';
+
+       car_x = mk_string(sc, newstr);
+       g_free(newstr);
+
+       s_return(sc, car_x);
+     }
+
+     case OP_SUBSTR: { /* substring */
+          char *str;
+          char *beg;
+          char *end;
+          int index0;
+          int index1;
+          int len;
+          pointer x;
+
+          str=strvalue(car(sc->args));
+
+          index0=ivalue(cadr(sc->args));
+
+          if(index0>g_utf8_strlen(str, -1)) {
+               Error_1(sc,"substring: start out of bounds:",cadr(sc->args));
+          }
+
+          if(cddr(sc->args)!=sc->NIL) {
+               index1=ivalue(caddr(sc->args));
+               if(index1>g_utf8_strlen(str, -1) || index1<index0) {
+                    Error_1(sc,"substring: end out of bounds:",caddr(sc->args));
+               }
+          } else {
+               index1=g_utf8_strlen(str, -1);
+          }
+
+          /* store the contents of the argument strings into the new string */
+          beg = g_utf8_offset_to_pointer(str, (long)index0);
+          end = g_utf8_offset_to_pointer(str, (long)index1);
+          len=end-beg;
+
+          str = (char *)sc->malloc(len+1);
+          if (str == NULL) {
+             sc->no_memory=1;
+             Error_1(sc,"string-set!: No memory to extract substring:",car(sc->args));
+          }
+
+          memcpy(str, beg, len);
+          str[len] = '\0';
+
+          x = mk_string(sc, str);
+          g_free(str);
+
+          s_return(sc,x);
+     }
+
+     case OP_VECTOR: {   /* vector */
+          int i;
+          pointer vec;
+          int len=list_length(sc,sc->args);
+          if(len<0) {
+               Error_1(sc,"vector: not a proper list:",sc->args);
+          }
+          vec=mk_vector(sc,len);
+          if(sc->no_memory) { s_return(sc, sc->sink); }
+          for (x = sc->args, i = 0; is_pair(x); x = cdr(x), i++) {
+               set_vector_elem(vec,i,car(x));
+          }
+          s_return(sc,vec);
+     }
+
+     case OP_MKVECTOR: { /* make-vector */
+          pointer fill=sc->NIL;
+          int len;
+          pointer vec;
+
+          len=ivalue(car(sc->args));
+
+          if(cdr(sc->args)!=sc->NIL) {
+               fill=cadr(sc->args);
+          }
+          vec=mk_vector(sc,len);
+          if(sc->no_memory) { s_return(sc, sc->sink); }
+          if(fill!=sc->NIL) {
+               fill_vector(vec,fill);
+          }
+          s_return(sc,vec);
+     }
+
+     case OP_VECLEN:  /* vector-length */
+          s_return(sc,mk_integer(sc,ivalue(car(sc->args))));
+
+     case OP_VECREF: { /* vector-ref */
+          int index;
+
+          index=ivalue(cadr(sc->args));
+
+          if(index>=ivalue(car(sc->args))) {
+               Error_1(sc,"vector-ref: out of bounds:",cadr(sc->args));
+          }
+
+          s_return(sc,vector_elem(car(sc->args),index));
+     }
+
+     case OP_VECSET: {   /* vector-set! */
+          int index;
+
+          if(is_immutable(car(sc->args))) {
+               Error_1(sc,"vector-set!: unable to alter immutable vector:",car(sc->args));
+          }
+
+          index=ivalue(cadr(sc->args));
+          if(index>=ivalue(car(sc->args))) {
+               Error_1(sc,"vector-set!: out of bounds:",cadr(sc->args));
+          }
+
+          set_vector_elem(car(sc->args),index,caddr(sc->args));
+          s_return(sc,car(sc->args));
+     }
+
+     default:
+          snprintf(sc->strbuff,STRBUFFSIZE,"%d: illegal operator", sc->op);
+          Error_0(sc,sc->strbuff);
+     }
+     return sc->T;
+}
+
+static int is_list(scheme *sc, pointer a)
+{ return list_length(sc,a) >= 0; }
+
+/* Result is:
+   proper list: length
+   circular list: -1
+   not even a pair: -2
+   dotted list: -2 minus length before dot
+*/
+int list_length(scheme *sc, pointer p) {
+    int i=0;
+    pointer slow, fast;
+
+    slow = fast = p;
+    while (1)
+    {
+        if (fast == sc->NIL)
+                return i;
+        if (!is_pair(fast))
+                return -2 - i;
+        fast = cdr(fast);
+        ++i;
+        if (fast == sc->NIL)
+                return i;
+        if (!is_pair(fast))
+                return -2 - i;
+        ++i;
+        fast = cdr(fast);
+
+       /* Safe because we would have already returned if `fast'
+          encountered a non-pair. */
+        slow = cdr(slow);
+        if (fast == slow)
+        {
+            /* the fast pointer has looped back around and caught up
+               with the slow pointer, hence the structure is circular,
+               not of finite length, and therefore not a list */
+            return -1;
+        }
+    }
+}
+
+static pointer opexe_3(scheme *sc, enum scheme_opcodes op) {
+     pointer x;
+     num v;
+     int (*comp_func)(num,num)=0;
+
+     switch (op) {
+     case OP_NOT:        /* not */
+          s_retbool(is_false(car(sc->args)));
+     case OP_BOOLP:       /* boolean? */
+          s_retbool(car(sc->args) == sc->F || car(sc->args) == sc->T);
+     case OP_EOFOBJP:       /* boolean? */
+          s_retbool(car(sc->args) == sc->EOF_OBJ);
+     case OP_NULLP:       /* null? */
+          s_retbool(car(sc->args) == sc->NIL);
+     case OP_NUMEQ:      /* = */
+     case OP_LESS:       /* < */
+     case OP_GRE:        /* > */
+     case OP_LEQ:        /* <= */
+     case OP_GEQ:        /* >= */
+          switch(op) {
+               case OP_NUMEQ: comp_func=num_eq; break;
+               case OP_LESS:  comp_func=num_lt; break;
+               case OP_GRE:   comp_func=num_gt; break;
+               case OP_LEQ:   comp_func=num_le; break;
+               case OP_GEQ:   comp_func=num_ge; break;
+               default:       break;  /* Quiet the compiler */
+          }
+          x=sc->args;
+          v=nvalue(car(x));
+          x=cdr(x);
+
+          for (; x != sc->NIL; x = cdr(x)) {
+               if(!comp_func(v,nvalue(car(x)))) {
+                    s_retbool(0);
+               }
+               v=nvalue(car(x));
+          }
+          s_retbool(1);
+     case OP_SYMBOLP:     /* symbol? */
+          s_retbool(is_symbol(car(sc->args)));
+     case OP_NUMBERP:     /* number? */
+          s_retbool(is_number(car(sc->args)));
+     case OP_STRINGP:     /* string? */
+          s_retbool(is_string(car(sc->args)));
+     case OP_INTEGERP:     /* integer? */
+          s_retbool(is_integer(car(sc->args)));
+     case OP_REALP:     /* real? */
+          s_retbool(is_number(car(sc->args))); /* All numbers are real */
+     case OP_CHARP:     /* char? */
+          s_retbool(is_character(car(sc->args)));
+#if USE_CHAR_CLASSIFIERS
+     case OP_CHARAP:     /* char-alphabetic? */
+          s_retbool(Cisalpha(ivalue(car(sc->args))));
+     case OP_CHARNP:     /* char-numeric? */
+          s_retbool(Cisdigit(ivalue(car(sc->args))));
+     case OP_CHARWP:     /* char-whitespace? */
+          s_retbool(Cisspace(ivalue(car(sc->args))));
+     case OP_CHARUP:     /* char-upper-case? */
+          s_retbool(Cisupper(ivalue(car(sc->args))));
+     case OP_CHARLP:     /* char-lower-case? */
+          s_retbool(Cislower(ivalue(car(sc->args))));
+#endif
+     case OP_PORTP:     /* port? */
+          s_retbool(is_port(car(sc->args)));
+     case OP_INPORTP:     /* input-port? */
+          s_retbool(is_inport(car(sc->args)));
+     case OP_OUTPORTP:     /* output-port? */
+          s_retbool(is_outport(car(sc->args)));
+     case OP_PROCP:       /* procedure? */
+          /*--
+              * continuation should be procedure by the example
+              * (call-with-current-continuation procedure?) ==> #t
+                 * in R^3 report sec. 6.9
+              */
+          s_retbool(is_proc(car(sc->args)) || is_closure(car(sc->args))
+                 || is_continuation(car(sc->args)) || is_foreign(car(sc->args)));
+     case OP_PAIRP:       /* pair? */
+          s_retbool(is_pair(car(sc->args)));
+     case OP_LISTP:       /* list? */
+          s_retbool(list_length(sc,car(sc->args)) >= 0);
+     case OP_ENVP:        /* environment? */
+          s_retbool(is_environment(car(sc->args)));
+     case OP_VECTORP:     /* vector? */
+          s_retbool(is_vector(car(sc->args)));
+     case OP_EQ:         /* eq? */
+          s_retbool(car(sc->args) == cadr(sc->args));
+     case OP_EQV:        /* eqv? */
+          s_retbool(eqv(car(sc->args), cadr(sc->args)));
+     default:
+          snprintf(sc->strbuff,STRBUFFSIZE,"%d: illegal operator", sc->op);
+          Error_0(sc,sc->strbuff);
+     }
+     return sc->T;
+}
+
+static pointer opexe_4(scheme *sc, enum scheme_opcodes op) {
+     pointer x, y;
+
+     switch (op) {
+     case OP_FORCE:      /* force */
+          sc->code = car(sc->args);
+          if (is_promise(sc->code)) {
+               /* Should change type to closure here */
+               s_save(sc, OP_SAVE_FORCED, sc->NIL, sc->code);
+               sc->args = sc->NIL;
+               s_goto(sc,OP_APPLY);
+          } else {
+               s_return(sc,sc->code);
+          }
+
+     case OP_SAVE_FORCED:     /* Save forced value replacing promise */
+          memcpy(sc->code,sc->value,sizeof(struct cell));
+          s_return(sc,sc->value);
+
+     case OP_WRITE:      /* write */
+     case OP_DISPLAY:    /* display */
+     case OP_WRITE_CHAR: /* write-char */
+          if(is_pair(cdr(sc->args))) {
+               if(cadr(sc->args)!=sc->outport) {
+                    x=cons(sc,sc->outport,sc->NIL);
+                    s_save(sc,OP_SET_OUTPORT, x, sc->NIL);
+                    sc->outport=cadr(sc->args);
+               }
+          }
+          sc->args = car(sc->args);
+          if(op==OP_WRITE) {
+               sc->print_flag = 1;
+          } else {
+               sc->print_flag = 0;
+          }
+          s_goto(sc,OP_P0LIST);
+
+     case OP_NEWLINE:    /* newline */
+          if(is_pair(sc->args)) {
+               if(car(sc->args)!=sc->outport) {
+                    x=cons(sc,sc->outport,sc->NIL);
+                    s_save(sc,OP_SET_OUTPORT, x, sc->NIL);
+                    sc->outport=car(sc->args);
+               }
+          }
+          putstr(sc, "\n");
+          s_return(sc,sc->T);
+
+     case OP_ERR0:  /* error */
+          sc->retcode=-1;
+          if (!is_string(car(sc->args))) {
+               sc->args=cons(sc,mk_string(sc," -- "),sc->args);
+               setimmutable(car(sc->args));
+          }
+          putstr(sc, "Error: ");
+          putstr(sc, strvalue(car(sc->args)));
+          sc->args = cdr(sc->args);
+          s_goto(sc,OP_ERR1);
+
+     case OP_ERR1:  /* error */
+          putstr(sc, " ");
+          if (sc->args != sc->NIL) {
+               s_save(sc,OP_ERR1, cdr(sc->args), sc->NIL);
+               sc->args = car(sc->args);
+               sc->print_flag = 1;
+               s_goto(sc,OP_P0LIST);
+          } else {
+               putstr(sc, "\n");
+               if(sc->interactive_repl) {
+                    s_goto(sc,OP_T0LVL);
+               } else {
+                    return sc->NIL;
+               }
+          }
+
+     case OP_REVERSE:   /* reverse */
+          s_return(sc,reverse(sc, car(sc->args)));
+
+     case OP_LIST_STAR: /* list* */
+          s_return(sc,list_star(sc,sc->args));
+
+     case OP_APPEND:    /* append */
+          x = sc->NIL;
+          y = sc->args;
+          if (y == x) {
+              s_return(sc, x);
+          }
+
+          /* cdr() in the while condition is not a typo. If car() */
+          /* is used (append '() 'a) will return the wrong result.*/
+          while (cdr(y) != sc->NIL) {
+              x = revappend(sc, x, car(y));
+              y = cdr(y);
+              if (x == sc->F) {
+                  Error_0(sc, "non-list argument to append");
+              }
+          }
+
+          s_return(sc, reverse_in_place(sc, car(y), x));
+
+#if USE_PLIST
+     case OP_PUT:        /* put */
+          if (!hasprop(car(sc->args)) || !hasprop(cadr(sc->args))) {
+               Error_0(sc,"illegal use of put");
+          }
+          for (x = symprop(car(sc->args)), y = cadr(sc->args); x != sc->NIL; x = cdr(x)) {
+               if (caar(x) == y) {
+                    break;
+               }
+          }
+          if (x != sc->NIL)
+               cdar(x) = caddr(sc->args);
+          else
+               symprop(car(sc->args)) = cons(sc, cons(sc, y, caddr(sc->args)),
+                                symprop(car(sc->args)));
+          s_return(sc,sc->T);
+
+     case OP_GET:        /* get */
+          if (!hasprop(car(sc->args)) || !hasprop(cadr(sc->args))) {
+               Error_0(sc,"illegal use of get");
+          }
+          for (x = symprop(car(sc->args)), y = cadr(sc->args); x != sc->NIL; x = cdr(x)) {
+               if (caar(x) == y) {
+                    break;
+               }
+          }
+          if (x != sc->NIL) {
+               s_return(sc,cdar(x));
+          } else {
+               s_return(sc,sc->NIL);
+          }
+#endif /* USE_PLIST */
+     case OP_QUIT:       /* quit */
+          if(is_pair(sc->args)) {
+               sc->retcode=ivalue(car(sc->args));
+          }
+          return (sc->NIL);
+
+     case OP_GC:         /* gc */
+          gc(sc, sc->NIL, sc->NIL);
+          s_return(sc,sc->T);
+
+     case OP_GCVERB:          /* gc-verbose */
+     {    int  was = sc->gc_verbose;
+
+          sc->gc_verbose = (car(sc->args) != sc->F);
+          s_retbool(was);
+     }
+
+     case OP_NEWSEGMENT: /* new-segment */
+          if (!is_pair(sc->args) || !is_number(car(sc->args))) {
+               Error_0(sc,"new-segment: argument must be a number");
+          }
+          alloc_cellseg(sc, (int) ivalue(car(sc->args)));
+          s_return(sc,sc->T);
+
+     case OP_OBLIST: /* oblist */
+          s_return(sc, oblist_all_symbols(sc));
+
+     case OP_CURR_INPORT: /* current-input-port */
+          s_return(sc,sc->inport);
+
+     case OP_CURR_OUTPORT: /* current-output-port */
+          s_return(sc,sc->outport);
+
+     case OP_OPEN_INFILE: /* open-input-file */
+     case OP_OPEN_OUTFILE: /* open-output-file */
+     case OP_OPEN_INOUTFILE: /* open-input-output-file */ {
+          int prop=0;
+          pointer p;
+          switch(op) {
+               case OP_OPEN_INFILE:     prop=port_input; break;
+               case OP_OPEN_OUTFILE:    prop=port_output; break;
+               case OP_OPEN_INOUTFILE:  prop=port_input|port_output; break;
+               default:                 break;  /* Quiet the compiler */
+          }
+          p=port_from_filename(sc,strvalue(car(sc->args)),prop);
+          if(p==sc->NIL) {
+               s_return(sc,sc->F);
+          }
+          s_return(sc,p);
+     }
+
+#if USE_STRING_PORTS
+     case OP_OPEN_INSTRING: /* open-input-string */
+     case OP_OPEN_INOUTSTRING: /* open-input-output-string */ {
+          int prop=0;
+          pointer p;
+          switch(op) {
+               case OP_OPEN_INSTRING:     prop=port_input; break;
+               case OP_OPEN_INOUTSTRING:  prop=port_input|port_output; break;
+               default:                   break;  /* Quiet the compiler */
+          }
+          p=port_from_string(sc, strvalue(car(sc->args)),
+                     g_utf8_offset_to_pointer(strvalue(car(sc->args)),
+                                              strlength(car(sc->args))), prop);
+          if(p==sc->NIL) {
+               s_return(sc,sc->F);
+          }
+          s_return(sc,p);
+     }
+     case OP_OPEN_OUTSTRING: /* open-output-string */ {
+          pointer p;
+          if(car(sc->args)==sc->NIL) {
+               p=port_from_scratch(sc);
+               if(p==sc->NIL) {
+                    s_return(sc,sc->F);
+               }
+          } else {
+               p=port_from_string(sc, strvalue(car(sc->args)),
+                          strvalue(car(sc->args))+strlength(car(sc->args)),
+                          port_output);
+               if(p==sc->NIL) {
+                    s_return(sc,sc->F);
+               }
+          }
+          s_return(sc,p);
+     }
+     case OP_GET_OUTSTRING: /* get-output-string */ {
+          port *p;
+
+          if ((p=car(sc->args)->_object._port)->kind&port_string) {
+               off_t size;
+               char *str;
+
+               size=p->rep.string.curr-p->rep.string.start+1;
+               str=sc->malloc(size);
+               if(str != NULL) {
+                    pointer s;
+
+                    memcpy(str,p->rep.string.start,size-1);
+                    str[size-1]='\0';
+                    s=mk_string(sc,str);
+                    sc->free(str);
+                    s_return(sc,s);
+               }
+          }
+          s_return(sc,sc->F);
+     }
+#endif
+
+     case OP_CLOSE_INPORT: /* close-input-port */
+          port_close(sc,car(sc->args),port_input);
+          s_return(sc,sc->T);
+
+     case OP_CLOSE_OUTPORT: /* close-output-port */
+          port_close(sc,car(sc->args),port_output);
+          s_return(sc,sc->T);
+
+     case OP_INT_ENV: /* interaction-environment */
+          s_return(sc,sc->global_env);
+
+     case OP_CURR_ENV: /* current-environment */
+          s_return(sc,sc->envir);
+
+     default:
+          sprintf(sc->strbuff, "%d: illegal operator", sc->op);
+          Error_0(sc,sc->strbuff);
+     }
+     return sc->T;
+}
+
+static pointer opexe_5(scheme *sc, enum scheme_opcodes op) {
+     pointer x;
+     char *trans_str;
+
+     if(sc->nesting!=0) {
+          int n=sc->nesting;
+          sc->nesting=0;
+          sc->retcode=-1;
+          Error_1(sc,"unmatched parentheses:",mk_integer(sc,n));
+     }
+
+     switch (op) {
+     /* ========== reading part ========== */
+     case OP_READ:
+          if(!is_pair(sc->args)) {
+               s_goto(sc,OP_READ_INTERNAL);
+          }
+          if(!is_inport(car(sc->args))) {
+               Error_1(sc,"read: not an input port:",car(sc->args));
+          }
+          if(car(sc->args)==sc->inport) {
+               s_goto(sc,OP_READ_INTERNAL);
+          }
+          x=sc->inport;
+          sc->inport=car(sc->args);
+          x=cons(sc,x,sc->NIL);
+          s_save(sc,OP_SET_INPORT, x, sc->NIL);
+          s_goto(sc,OP_READ_INTERNAL);
+
+     case OP_READ_CHAR: /* read-char */
+     case OP_PEEK_CHAR: /* peek-char */ {
+          gunichar c;
+          if(is_pair(sc->args)) {
+               if(car(sc->args)!=sc->inport) {
+                    x=sc->inport;
+                    x=cons(sc,x,sc->NIL);
+                    s_save(sc,OP_SET_INPORT, x, sc->NIL);
+                    sc->inport=car(sc->args);
+               }
+          }
+          c=inchar(sc);
+          if(c==EOF) {
+               s_return(sc,sc->EOF_OBJ);
+          }
+          if(sc->op==OP_PEEK_CHAR) {
+               backchar(sc,c);
+          }
+          s_return(sc,mk_character(sc,c));
+     }
+
+     case OP_CHAR_READY: /* char-ready? */ {
+          pointer p=sc->inport;
+          int res;
+          if(is_pair(sc->args)) {
+               p=car(sc->args);
+          }
+          res=p->_object._port->kind&port_string;
+          s_retbool(res);
+     }
+
+     case OP_SET_INPORT: /* set-input-port */
+          sc->inport=car(sc->args);
+          s_return(sc,sc->value);
+
+     case OP_SET_OUTPORT: /* set-output-port */
+          sc->outport=car(sc->args);
+          s_return(sc,sc->value);
+
+     case OP_RDSEXPR:
+          switch (sc->tok) {
+          case TOK_EOF:
+               s_return(sc,sc->EOF_OBJ);
+          /* NOTREACHED */
+/*
+ * Commented out because we now skip comments in the scanner
+ *
+          case TOK_COMMENT: {
+               gunichar c;
+               while ((c=inchar(sc)) != '\n' && c!=EOF)
+                    ;
+               sc->tok = token(sc);
+               s_goto(sc,OP_RDSEXPR);
+          }
+*/
+          case TOK_VEC:
+               s_save(sc,OP_RDVEC,sc->NIL,sc->NIL);
+               /* fall through */
+          case TOK_LPAREN:
+               sc->tok = token(sc);
+               if (sc->tok == TOK_RPAREN) {
+                    s_return(sc,sc->NIL);
+               } else if (sc->tok == TOK_DOT) {
+                    Error_0(sc,"syntax error: illegal dot expression");
+               } else {
+                    sc->nesting_stack[sc->file_i]++;
+                    s_save(sc,OP_RDLIST, sc->NIL, sc->NIL);
+                    s_goto(sc,OP_RDSEXPR);
+               }
+          case TOK_QUOTE:
+               s_save(sc,OP_RDQUOTE, sc->NIL, sc->NIL);
+               sc->tok = token(sc);
+               s_goto(sc,OP_RDSEXPR);
+          case TOK_BQUOTE:
+               sc->tok = token(sc);
+               if(sc->tok==TOK_VEC) {
+                 s_save(sc,OP_RDQQUOTEVEC, sc->NIL, sc->NIL);
+                 sc->tok=TOK_LPAREN;
+                 s_goto(sc,OP_RDSEXPR);
+               } else {
+                 s_save(sc,OP_RDQQUOTE, sc->NIL, sc->NIL);
+               }
+               s_goto(sc,OP_RDSEXPR);
+          case TOK_COMMA:
+               s_save(sc,OP_RDUNQUOTE, sc->NIL, sc->NIL);
+               sc->tok = token(sc);
+               s_goto(sc,OP_RDSEXPR);
+          case TOK_ATMARK:
+               s_save(sc,OP_RDUQTSP, sc->NIL, sc->NIL);
+               sc->tok = token(sc);
+               s_goto(sc,OP_RDSEXPR);
+          case TOK_ATOM:
+               s_return(sc,mk_atom(sc, readstr_upto(sc, DELIMITERS)));
+          case TOK_DQUOTE:
+               x=readstrexp(sc);
+               if(x==sc->F) {
+                 Error_0(sc,"Error reading string");
+               }
+               setimmutable(x);
+               s_return(sc,x);
+          case TOK_USCORE:
+               x=readstrexp(sc);
+               if(x==sc->F) {
+                 Error_0(sc,"Error reading string");
+               }
+               trans_str = gettext (strvalue (x));
+               if (trans_str != strvalue(x)) {
+                 sc->free(strvalue(x));
+                 strlength(x) = g_utf8_strlen(trans_str, -1);
+                 strvalue(x) = store_string(sc, strlength(x), trans_str, 0);
+               }
+               setimmutable(x);
+               s_return(sc,x);
+          case TOK_SHARP: {
+               pointer f=find_slot_in_env(sc,sc->envir,sc->SHARP_HOOK,1);
+               if(f==sc->NIL) {
+                    Error_0(sc,"undefined sharp expression");
+               } else {
+                    sc->code=cons(sc,slot_value_in_env(f),sc->NIL);
+                    s_goto(sc,OP_EVAL);
+               }
+          }
+          case TOK_SHARP_CONST:
+               if ((x = mk_sharp_const(sc, readstr_upto(sc, DELIMITERS))) == sc->NIL) {
+                    Error_0(sc,"undefined sharp expression");
+               } else {
+                    s_return(sc,x);
+               }
+          default:
+               Error_1(sc, "syntax error: illegal token", mk_integer (sc, sc->tok));
+          }
+          break;
+
+     case OP_RDLIST: {
+          sc->args = cons(sc, sc->value, sc->args);
+          sc->tok = token(sc);
+/* We now skip comments in the scanner
+          while (sc->tok == TOK_COMMENT) {
+               gunichar c;
+               while ((c=inchar(sc)) != '\n' && c!=EOF)
+                    ;
+               sc->tok = token(sc);
+          }
+*/
+          if (sc->tok == TOK_EOF)
+               { s_return(sc,sc->EOF_OBJ); }
+          else if (sc->tok == TOK_RPAREN) {
+               gunichar c = inchar(sc);
+               if (c != '\n')
+                 backchar(sc,c);
+#if SHOW_ERROR_LINE
+               else if (sc->load_stack[sc->file_i].kind & port_file)
+                  sc->load_stack[sc->file_i].rep.stdio.curr_line++;
+#endif
+               sc->nesting_stack[sc->file_i]--;
+               s_return(sc,reverse_in_place(sc, sc->NIL, sc->args));
+          } else if (sc->tok == TOK_DOT) {
+               s_save(sc,OP_RDDOT, sc->args, sc->NIL);
+               sc->tok = token(sc);
+               s_goto(sc,OP_RDSEXPR);
+          } else {
+               s_save(sc,OP_RDLIST, sc->args, sc->NIL);
+               s_goto(sc,OP_RDSEXPR);
+          }
+     }
+
+     case OP_RDDOT:
+          if (token(sc) != TOK_RPAREN) {
+               Error_0(sc,"syntax error: illegal dot expression");
+          } else {
+               sc->nesting_stack[sc->file_i]--;
+               s_return(sc,reverse_in_place(sc, sc->value, sc->args));
+          }
+
+     case OP_RDQUOTE:
+          s_return(sc,cons(sc, sc->QUOTE, cons(sc, sc->value, sc->NIL)));
+
+     case OP_RDQQUOTE:
+          s_return(sc,cons(sc, sc->QQUOTE, cons(sc, sc->value, sc->NIL)));
+
+     case OP_RDQQUOTEVEC:
+          s_return(sc,cons(sc, mk_symbol(sc,"apply"),
+                        cons(sc, mk_symbol(sc,"vector"),
+                             cons(sc,cons(sc, sc->QQUOTE,
+                                  cons(sc,sc->value,sc->NIL)),
+                                  sc->NIL))));
+
+     case OP_RDUNQUOTE:
+          s_return(sc,cons(sc, sc->UNQUOTE, cons(sc, sc->value, sc->NIL)));
+
+     case OP_RDUQTSP:
+          s_return(sc,cons(sc, sc->UNQUOTESP, cons(sc, sc->value, sc->NIL)));
+
+     case OP_RDVEC:
+          /*sc->code=cons(sc,mk_proc(sc,OP_VECTOR),sc->value);
+          s_goto(sc,OP_EVAL); Cannot be quoted*/
+          /*x=cons(sc,mk_proc(sc,OP_VECTOR),sc->value);
+          s_return(sc,x); Cannot be part of pairs*/
+          /*sc->code=mk_proc(sc,OP_VECTOR);
+          sc->args=sc->value;
+          s_goto(sc,OP_APPLY);*/
+          sc->args=sc->value;
+          s_goto(sc,OP_VECTOR);
+
+     /* ========== printing part ========== */
+     case OP_P0LIST:
+          if(is_vector(sc->args)) {
+               putstr(sc,"#(");
+               sc->args=cons(sc,sc->args,mk_integer(sc,0));
+               s_goto(sc,OP_PVECFROM);
+          } else if(is_environment(sc->args)) {
+               putstr(sc,"#<ENVIRONMENT>");
+               s_return(sc,sc->T);
+          } else if (!is_pair(sc->args)) {
+               printatom(sc, sc->args, sc->print_flag);
+               s_return(sc,sc->T);
+          } else if (car(sc->args) == sc->QUOTE && ok_abbrev(cdr(sc->args))) {
+               putstr(sc, "'");
+               sc->args = cadr(sc->args);
+               s_goto(sc,OP_P0LIST);
+          } else if (car(sc->args) == sc->QQUOTE && ok_abbrev(cdr(sc->args))) {
+               putstr(sc, "`");
+               sc->args = cadr(sc->args);
+               s_goto(sc,OP_P0LIST);
+          } else if (car(sc->args) == sc->UNQUOTE && ok_abbrev(cdr(sc->args))) {
+               putstr(sc, ",");
+               sc->args = cadr(sc->args);
+               s_goto(sc,OP_P0LIST);
+          } else if (car(sc->args) == sc->UNQUOTESP && ok_abbrev(cdr(sc->args))) {
+               putstr(sc, ",@");
+               sc->args = cadr(sc->args);
+               s_goto(sc,OP_P0LIST);
+          } else {
+               putstr(sc, "(");
+               s_save(sc,OP_P1LIST, cdr(sc->args), sc->NIL);
+               sc->args = car(sc->args);
+               s_goto(sc,OP_P0LIST);
+          }
+
+     case OP_P1LIST:
+          if (is_pair(sc->args)) {
+            s_save(sc,OP_P1LIST, cdr(sc->args), sc->NIL);
+            putstr(sc, " ");
+            sc->args = car(sc->args);
+            s_goto(sc,OP_P0LIST);
+          } else if(is_vector(sc->args)) {
+            s_save(sc,OP_P1LIST,sc->NIL,sc->NIL);
+            putstr(sc, " . ");
+            s_goto(sc,OP_P0LIST);
+          } else {
+            if (sc->args != sc->NIL) {
+              putstr(sc, " . ");
+              printatom(sc, sc->args, sc->print_flag);
+            }
+            putstr(sc, ")");
+            s_return(sc,sc->T);
+          }
+     case OP_PVECFROM: {
+          int i=ivalue_unchecked(cdr(sc->args));
+          pointer vec=car(sc->args);
+          int len=ivalue_unchecked(vec);
+          if(i==len) {
+               putstr(sc,")");
+               s_return(sc,sc->T);
+          } else {
+               pointer elem=vector_elem(vec,i);
+               ivalue_unchecked(cdr(sc->args))=i+1;
+               s_save(sc,OP_PVECFROM, sc->args, sc->NIL);
+               sc->args=elem;
+               if (i > 0)
+                    putstr(sc," ");
+               s_goto(sc,OP_P0LIST);
+          }
+     }
+
+     default:
+          snprintf(sc->strbuff,STRBUFFSIZE,"%d: illegal operator", sc->op);
+          Error_0(sc,sc->strbuff);
+
+     }
+     return sc->T;
+}
+
+static pointer opexe_6(scheme *sc, enum scheme_opcodes op) {
+     pointer x, y;
+     long v;
+
+     switch (op) {
+     case OP_LIST_LENGTH:     /* length */   /* a.k */
+          v=list_length(sc,car(sc->args));
+          if(v<0) {
+               Error_1(sc,"length: not a list:",car(sc->args));
+          }
+          s_return(sc,mk_integer(sc, v));
+
+     case OP_ASSQ:       /* assq */     /* a.k */
+          x = car(sc->args);
+          for (y = cadr(sc->args); is_pair(y); y = cdr(y)) {
+               if (!is_pair(car(y))) {
+                    Error_0(sc,"unable to handle non pair element");
+               }
+               if (x == caar(y))
+                    break;
+          }
+          if (is_pair(y)) {
+               s_return(sc,car(y));
+          } else {
+               s_return(sc,sc->F);
+          }
+
+
+     case OP_GET_CLOSURE:     /* get-closure-code */   /* a.k */
+          sc->args = car(sc->args);
+          if (sc->args == sc->NIL) {
+               s_return(sc,sc->F);
+          } else if (is_closure(sc->args)) {
+               s_return(sc,cons(sc, sc->LAMBDA, closure_code(sc->value)));
+          } else if (is_macro(sc->args)) {
+               s_return(sc,cons(sc, sc->LAMBDA, closure_code(sc->value)));
+          } else {
+               s_return(sc,sc->F);
+          }
+     case OP_CLOSUREP:        /* closure? */
+          /*
+           * Note, macro object is also a closure.
+           * Therefore, (closure? <#MACRO>) ==> #t
+           */
+          s_retbool(is_closure(car(sc->args)));
+     case OP_MACROP:          /* macro? */
+          s_retbool(is_macro(car(sc->args)));
+     default:
+          snprintf(sc->strbuff,STRBUFFSIZE,"%d: illegal operator", sc->op);
+          Error_0(sc,sc->strbuff);
+     }
+     return sc->T; /* NOTREACHED */
+}
+
+typedef pointer (*dispatch_func)(scheme *, enum scheme_opcodes);
+
+typedef int (*test_predicate)(pointer);
+static int is_any(pointer p) { return 1;}
+
+static int is_nonneg(pointer p) {
+  return ivalue(p)>=0 && is_integer(p);
+}
+
+/* Correspond carefully with following defines! */
+static struct {
+  test_predicate fct;
+  const char *kind;
+} tests[]={
+  {0,0}, /* unused */
+  {is_any, 0},
+  {is_string, "string"},
+  {is_symbol, "symbol"},
+  {is_port, "port"},
+  {is_inport,"input port"},
+  {is_outport,"output port"},
+  {is_environment, "environment"},
+  {is_pair, "pair"},
+  {0, "pair or '()"},
+  {is_character, "character"},
+  {is_vector, "vector"},
+  {is_number, "number"},
+  {is_integer, "integer"},
+  {is_nonneg, "non-negative integer"}
+};
+
+#define TST_NONE 0
+#define TST_ANY "\001"
+#define TST_STRING "\002"
+#define TST_SYMBOL "\003"
+#define TST_PORT "\004"
+#define TST_INPORT "\005"
+#define TST_OUTPORT "\006"
+#define TST_ENVIRONMENT "\007"
+#define TST_PAIR "\010"
+#define TST_LIST "\011"
+#define TST_CHAR "\012"
+#define TST_VECTOR "\013"
+#define TST_NUMBER "\014"
+#define TST_INTEGER "\015"
+#define TST_NATURAL "\016"
+
+typedef struct {
+  dispatch_func func;
+  char *name;
+  int min_arity;
+  int max_arity;
+  char *arg_tests_encoding;
+} op_code_info;
+
+#define INF_ARG 0xffff
+
+static op_code_info dispatch_table[]= {
+#define _OP_DEF(A,B,C,D,E,OP) {A,B,C,D,E},
+#include "opdefines.h"
+  { 0 }
+};
+
+static const char *procname(pointer x) {
+ int n=procnum(x);
+ const char *name=dispatch_table[n].name;
+ if(name==0) {
+     name="ILLEGAL!";
+ }
+ return name;
+}
+
+/* kernel of this interpreter */
+static void Eval_Cycle(scheme *sc, enum scheme_opcodes op) {
+  sc->op = op;
+  for (;;) {
+    op_code_info *pcd=dispatch_table+sc->op;
+    if (pcd->name!=0) { /* if built-in function, check arguments */
+      char msg[STRBUFFSIZE];
+      int ok=1;
+      int n=list_length(sc,sc->args);
+
+      /* Check number of arguments */
+      if(n<pcd->min_arity) {
+        ok=0;
+        snprintf(msg, STRBUFFSIZE, "%s: needs%s %d argument(s)",
+                 pcd->name,
+                 pcd->min_arity==pcd->max_arity?"":" at least",
+                 pcd->min_arity);
+      }
+      if(ok && n>pcd->max_arity) {
+        ok=0;
+        snprintf(msg, STRBUFFSIZE, "%s: needs%s %d argument(s)",
+                 pcd->name,
+                 pcd->min_arity==pcd->max_arity?"":" at most",
+                 pcd->max_arity);
+      }
+      if(ok) {
+        if(pcd->arg_tests_encoding!=0) {
+          int i=0;
+          int j;
+          const char *t=pcd->arg_tests_encoding;
+          pointer arglist=sc->args;
+          do {
+            pointer arg=car(arglist);
+            j=(int)t[0];
+        if(j==TST_LIST[0]) {
+              if(arg!=sc->NIL && !is_pair(arg)) break;
+            } else {
+              if(!tests[j].fct(arg)) break;
+            }
+
+            if(t[1]!=0) {/* last test is replicated as necessary */
+              t++;
+            }
+            arglist=cdr(arglist);
+            i++;
+          } while(i<n);
+          if(i<n) {
+            ok=0;
+            snprintf(msg, STRBUFFSIZE, "%s: argument %d must be: %s",
+                     pcd->name,
+                     i+1,
+                     tests[j].kind);
+          }
+        }
+      }
+      if(!ok) {
+        if(_Error_1(sc,msg,0)==sc->NIL) {
+          return;
+        }
+        pcd=dispatch_table+sc->op;
+      }
+    }
+    ok_to_freely_gc(sc);
+    if (pcd->func(sc, (enum scheme_opcodes)sc->op) == sc->NIL) {
+      return;
+    }
+    if(sc->no_memory) {
+      fprintf(stderr,"No memory!\n");
+      return;
+    }
+  }
+}
+
+/* ========== Initialization of internal keywords ========== */
+
+static void assign_syntax(scheme *sc, char *name) {
+     pointer x;
+
+     x = oblist_add_by_name(sc, name);
+     typeflag(x) |= T_SYNTAX;
+}
+
+static void assign_proc(scheme *sc, enum scheme_opcodes op, char *name) {
+     pointer x, y;
+
+     x = mk_symbol(sc, name);
+     y = mk_proc(sc,op);
+     new_slot_in_env(sc, x, y);
+}
+
+static pointer mk_proc(scheme *sc, enum scheme_opcodes op) {
+     pointer y;
+
+     y = get_cell(sc, sc->NIL, sc->NIL);
+     typeflag(y) = (T_PROC | T_ATOM);
+     ivalue_unchecked(y) = (long) op;
+     set_num_integer(y);
+     return y;
+}
+
+/* Hard-coded for the given keywords. Remember to rewrite if more are added! */
+static int syntaxnum(pointer p) {
+     const char *s=strvalue(car(p));
+     switch(strlength(car(p))) {
+     case 2:
+          if(s[0]=='i') return OP_IF0;        /* if */
+          else return OP_OR0;                 /* or */
+     case 3:
+          if(s[0]=='a') return OP_AND0;      /* and */
+          else return OP_LET0;               /* let */
+     case 4:
+          switch(s[3]) {
+          case 'e': return OP_CASE0;         /* case */
+          case 'd': return OP_COND0;         /* cond */
+          case '*': return OP_LET0AST;       /* let* */
+          default: return OP_SET0;           /* set! */
+          }
+     case 5:
+          switch(s[2]) {
+          case 'g': return OP_BEGIN;         /* begin */
+          case 'l': return OP_DELAY;         /* delay */
+          case 'c': return OP_MACRO0;        /* macro */
+          default: return OP_QUOTE;          /* quote */
+          }
+     case 6:
+          switch(s[2]) {
+          case 'm': return OP_LAMBDA;        /* lambda */
+          case 'f': return OP_DEF0;          /* define */
+          default: return OP_LET0REC;        /* letrec */
+          }
+     default:
+          return OP_C0STREAM;                /* cons-stream */
+     }
+}
+
+/* initialization of TinyScheme */
+#if USE_INTERFACE
+INTERFACE static pointer s_cons(scheme *sc, pointer a, pointer b) {
+ return cons(sc,a,b);
+}
+INTERFACE static pointer s_immutable_cons(scheme *sc, pointer a, pointer b) {
+ return immutable_cons(sc,a,b);
+}
+
+static struct scheme_interface vtbl ={
+  scheme_define,
+  s_cons,
+  s_immutable_cons,
+  reserve_cells,
+  mk_integer,
+  mk_real,
+  mk_symbol,
+  gensym,
+  mk_string,
+  mk_counted_string,
+  mk_character,
+  mk_vector,
+  mk_foreign_func,
+  mk_closure,
+  putstr,
+  putcharacter,
+
+  is_string,
+  string_length,
+  string_value,
+  is_number,
+  nvalue,
+  ivalue,
+  rvalue,
+  is_integer,
+  is_real,
+  is_character,
+  charvalue,
+  is_list,
+  is_vector,
+  list_length,
+  ivalue,
+  fill_vector,
+  vector_elem,
+  set_vector_elem,
+  is_port,
+  is_pair,
+  pair_car,
+  pair_cdr,
+  set_car,
+  set_cdr,
+
+  is_symbol,
+  symname,
+
+  is_syntax,
+  is_proc,
+  is_foreign,
+  syntaxname,
+  is_closure,
+  is_macro,
+  closure_code,
+  closure_env,
+
+  is_continuation,
+  is_promise,
+  is_environment,
+  is_immutable,
+  setimmutable,
+
+  scheme_load_file,
+  scheme_load_string
+};
+#endif
+
+scheme *scheme_init_new(void) {
+  scheme *sc=(scheme*)malloc(sizeof(scheme));
+  if(!scheme_init(sc)) {
+    free(sc);
+    return 0;
+  } else {
+    return sc;
+  }
+}
+
+scheme *scheme_init_new_custom_alloc(func_alloc malloc, func_dealloc free) {
+  scheme *sc=(scheme*)malloc(sizeof(scheme));
+  if(!scheme_init_custom_alloc(sc,malloc,free)) {
+    free(sc);
+    return 0;
+  } else {
+    return sc;
+  }
+}
+
+
+int scheme_init(scheme *sc) {
+ return scheme_init_custom_alloc(sc,malloc,free);
+}
+
+int scheme_init_custom_alloc(scheme *sc, func_alloc malloc, func_dealloc free) {
+  int i, n=sizeof(dispatch_table)/sizeof(dispatch_table[0]);
+  pointer x;
+
+  num_zero.is_fixnum=1;
+  num_zero.value.ivalue=0;
+  num_one.is_fixnum=1;
+  num_one.value.ivalue=1;
+
+#if USE_INTERFACE
+  sc->vptr=&vtbl;
+#endif
+  sc->gensym_cnt=0;
+  sc->malloc=malloc;
+  sc->free=free;
+  sc->last_cell_seg = -1;
+  sc->sink = &sc->_sink;
+  sc->NIL = &sc->_NIL;
+  sc->T = &sc->_HASHT;
+  sc->F = &sc->_HASHF;
+  sc->EOF_OBJ=&sc->_EOF_OBJ;
+  sc->free_cell = &sc->_NIL;
+  sc->fcells = 0;
+  sc->no_memory=0;
+  sc->inport=sc->NIL;
+  sc->outport=sc->NIL;
+  sc->save_inport=sc->NIL;
+  sc->loadport=sc->NIL;
+  sc->nesting=0;
+  sc->interactive_repl=0;
+  sc->print_output=0;
+
+  if (alloc_cellseg(sc,FIRST_CELLSEGS) != FIRST_CELLSEGS) {
+    sc->no_memory=1;
+    return 0;
+  }
+  sc->gc_verbose = 0;
+  dump_stack_initialize(sc);
+  sc->code = sc->NIL;
+  sc->tracing=0;
+  sc->bc_flag = 0;
+
+  /* init sc->NIL */
+  typeflag(sc->NIL) = (T_ATOM | MARK);
+  car(sc->NIL) = cdr(sc->NIL) = sc->NIL;
+  /* init T */
+  typeflag(sc->T) = (T_ATOM | MARK);
+  car(sc->T) = cdr(sc->T) = sc->T;
+  /* init F */
+  typeflag(sc->F) = (T_ATOM | MARK);
+  car(sc->F) = cdr(sc->F) = sc->F;
+  /* init sink */
+  typeflag(sc->sink) = (T_PAIR | MARK);
+  car(sc->sink) = sc->NIL;
+  /* init c_nest */
+  sc->c_nest = sc->NIL;
+
+  sc->oblist = oblist_initial_value(sc);
+  /* init global_env */
+  new_frame_in_env(sc, sc->NIL);
+  sc->global_env = sc->envir;
+  /* init else */
+  x = mk_symbol(sc,"else");
+  new_slot_in_env(sc, x, sc->T);
+
+  assign_syntax(sc, "lambda");
+  assign_syntax(sc, "quote");
+  assign_syntax(sc, "define");
+  assign_syntax(sc, "if");
+  assign_syntax(sc, "begin");
+  assign_syntax(sc, "set!");
+  assign_syntax(sc, "let");
+  assign_syntax(sc, "let*");
+  assign_syntax(sc, "letrec");
+  assign_syntax(sc, "cond");
+  assign_syntax(sc, "delay");
+  assign_syntax(sc, "and");
+  assign_syntax(sc, "or");
+  assign_syntax(sc, "cons-stream");
+  assign_syntax(sc, "macro");
+  assign_syntax(sc, "case");
+
+  for(i=0; i<n; i++) {
+    if(dispatch_table[i].name!=0) {
+      assign_proc(sc, (enum scheme_opcodes)i, dispatch_table[i].name);
+    }
+  }
+
+  /* initialization of global pointers to special symbols */
+  sc->LAMBDA = mk_symbol(sc, "lambda");
+  sc->QUOTE = mk_symbol(sc, "quote");
+  sc->QQUOTE = mk_symbol(sc, "quasiquote");
+  sc->UNQUOTE = mk_symbol(sc, "unquote");
+  sc->UNQUOTESP = mk_symbol(sc, "unquote-splicing");
+  sc->FEED_TO = mk_symbol(sc, "=>");
+  sc->COLON_HOOK = mk_symbol(sc,"*colon-hook*");
+  sc->ERROR_HOOK = mk_symbol(sc, "*error-hook*");
+  sc->SHARP_HOOK = mk_symbol(sc, "*sharp-hook*");
+  sc->COMPILE_HOOK = mk_symbol(sc, "*compile-hook*");
+
+  return !sc->no_memory;
+}
+
+SCHEME_EXPORT void scheme_set_input_port_file(scheme *sc, FILE *fin) {
+  sc->inport=port_from_file(sc,fin,port_input);
+}
+
+void scheme_set_input_port_string(scheme *sc, char *start, char *past_the_end) {
+  sc->inport=port_from_string(sc,start,past_the_end,port_input);
+}
+
+SCHEME_EXPORT void scheme_set_output_port_file(scheme *sc, FILE *fout) {
+  sc->outport=port_from_file(sc,fout,port_output);
+}
+
+void scheme_set_output_port_string(scheme *sc, char *start, char *past_the_end) {
+  sc->outport=port_from_string(sc,start,past_the_end,port_output);
+}
+
+void scheme_set_external_data(scheme *sc, void *p) {
+ sc->ext_data=p;
+}
+
+void scheme_deinit(scheme *sc) {
+  int i;
+
+#if SHOW_ERROR_LINE
+  char *fname;
+#endif
+
+  sc->oblist=sc->NIL;
+  sc->global_env=sc->NIL;
+  dump_stack_free(sc);
+  sc->envir=sc->NIL;
+  sc->code=sc->NIL;
+  sc->args=sc->NIL;
+  sc->value=sc->NIL;
+  if(is_port(sc->inport)) {
+    typeflag(sc->inport) = T_ATOM;
+  }
+  sc->inport=sc->NIL;
+  sc->outport=sc->NIL;
+  if(is_port(sc->save_inport)) {
+    typeflag(sc->save_inport) = T_ATOM;
+  }
+  sc->save_inport=sc->NIL;
+  if(is_port(sc->loadport)) {
+    typeflag(sc->loadport) = T_ATOM;
+  }
+  sc->loadport=sc->NIL;
+  sc->gc_verbose=0;
+  gc(sc,sc->NIL,sc->NIL);
+
+  for(i=0; i<=sc->last_cell_seg; i++) {
+    sc->free(sc->alloc_seg[i]);
+  }
+
+#if SHOW_ERROR_LINE
+  for(i=0; i<sc->file_i; i++) {
+    if (sc->load_stack[sc->file_i].kind & port_file) {
+      fname = sc->load_stack[i].rep.stdio.filename;
+      if(fname)
+        sc->free(fname);
+    }
+  }
+#endif
+}
+
+void scheme_load_file(scheme *sc, FILE *fin)
+{ scheme_load_named_file(sc,fin,0); }
+
+void scheme_load_named_file(scheme *sc, FILE *fin, const char *filename) {
+  dump_stack_reset(sc);
+  sc->envir = sc->global_env;
+  sc->file_i=0;
+  sc->load_stack[0].kind=port_input|port_file;
+  sc->load_stack[0].rep.stdio.file=fin;
+  sc->loadport=mk_port(sc,sc->load_stack);
+  sc->retcode=0;
+  if(fin==stdin) {
+    sc->interactive_repl=1;
+  }
+
+#if SHOW_ERROR_LINE
+  sc->load_stack[0].rep.stdio.curr_line = 0;
+  if(fin!=stdin && filename)
+    sc->load_stack[0].rep.stdio.filename = store_string(sc, strlen(filename), filename, 0);
+  else
+    sc->load_stack[0].rep.stdio.filename = NULL;
+#endif
+
+  sc->inport=sc->loadport;
+  sc->args = mk_integer(sc,sc->file_i);
+  Eval_Cycle(sc, OP_T0LVL);
+  typeflag(sc->loadport)=T_ATOM;
+  if(sc->retcode==0) {
+    sc->retcode=sc->nesting!=0;
+  }
+}
+
+void scheme_load_string(scheme *sc, const char *cmd) {
+  dump_stack_reset(sc);
+  sc->envir = sc->global_env;
+  sc->file_i=0;
+  sc->load_stack[0].kind=port_input|port_string;
+  sc->load_stack[0].rep.string.start=(char*)cmd; /* This func respects const */
+  sc->load_stack[0].rep.string.past_the_end=(char*)cmd+strlen(cmd);
+  sc->load_stack[0].rep.string.curr=(char*)cmd;
+  sc->loadport=mk_port(sc,sc->load_stack);
+  sc->retcode=0;
+  sc->interactive_repl=0;
+  sc->inport=sc->loadport;
+  sc->args = mk_integer(sc,sc->file_i);
+  Eval_Cycle(sc, OP_T0LVL);
+  typeflag(sc->loadport)=T_ATOM;
+  if(sc->retcode==0) {
+    sc->retcode=sc->nesting!=0;
+  }
+}
+
+void scheme_define(scheme *sc, pointer envir, pointer symbol, pointer value) {
+     pointer x;
+
+     x=find_slot_in_env(sc,envir,symbol,0);
+     if (x != sc->NIL) {
+          set_slot_in_env(sc, x, value);
+     } else {
+          new_slot_spec_in_env(sc, envir, symbol, value);
+     }
+}
+
+#if !STANDALONE
+void scheme_register_foreign_func(scheme * sc, scheme_registerable * sr)
+{
+  scheme_define(sc,
+               sc->global_env,
+               mk_symbol(sc,sr->name),
+               mk_foreign_func(sc, sr->f));
+}
+
+void scheme_register_foreign_func_list(scheme * sc,
+                                      scheme_registerable * list,
+                                      int count)
+{
+  int i;
+  for(i = 0; i < count; i++)
+    {
+      scheme_register_foreign_func(sc, list + i);
+    }
+}
+
+pointer scheme_apply0(scheme *sc, const char *procname)
+{ return scheme_eval(sc, cons(sc,mk_symbol(sc,procname),sc->NIL)); }
+
+static void save_from_C_call(scheme *sc)
+{
+  pointer saved_data =
+    cons(sc,
+        car(sc->sink),
+        cons(sc,
+             sc->envir,
+             sc->dump));
+  /* Push */
+  sc->c_nest = cons(sc, saved_data, sc->c_nest);
+  /* Truncate the dump stack so TS will return here when done, not
+     directly resume pre-C-call operations. */
+  dump_stack_reset(sc);
+}
+
+static void restore_from_C_call(scheme *sc)
+{
+  car(sc->sink) = caar(sc->c_nest);
+  sc->envir = cadar(sc->c_nest);
+  sc->dump = cdr(cdar(sc->c_nest));
+  /* Pop */
+  sc->c_nest = cdr(sc->c_nest);
+}
+
+/* "func" and "args" are assumed to be already eval'ed. */
+pointer scheme_call(scheme *sc, pointer func, pointer args)
+{
+  int old_repl = sc->interactive_repl;
+  sc->interactive_repl = 0;
+  save_from_C_call(sc);
+  sc->envir = sc->global_env;
+  sc->args = args;
+  sc->code = func;
+  sc->retcode = 0;
+  Eval_Cycle(sc, OP_APPLY);
+  sc->interactive_repl = old_repl;
+  restore_from_C_call(sc);
+  return sc->value;
+}
+
+pointer scheme_eval(scheme *sc, pointer obj)
+{
+  int old_repl = sc->interactive_repl;
+  sc->interactive_repl = 0;
+  save_from_C_call(sc);
+  sc->args = sc->NIL;
+  sc->code = obj;
+  sc->retcode = 0;
+  Eval_Cycle(sc, OP_EVAL);
+  sc->interactive_repl = old_repl;
+  restore_from_C_call(sc);
+  return sc->value;
+}
+
+
+#endif
+
+/* ========== Main ========== */
+
+#if STANDALONE
+
+#if defined(__APPLE__) && !defined (OSX)
+int main(int argc, char **argv)
+{
+     extern MacTS_main(int argc, char **argv);
+     char**    argv;
+     int argc = ccommand(&argv);
+     MacTS_main(argc,argv);
+     return 0;
+}
+int MacTS_main(int argc, char **argv) {
+#else
+int main(int argc, char **argv) {
+#endif
+  scheme sc;
+  FILE *fin;
+  char *file_name=InitFile;
+  int retcode;
+  int isfile=1;
+
+  if(argc==1) {
+    printf(banner);
+  }
+  if(argc==2 && strcmp(argv[1],"-?")==0) {
+    printf("Usage: tinyscheme -?\n");
+    printf("or:    tinyscheme [<file1> <file2> ...]\n");
+    printf("followed by\n");
+    printf("          -1 <file> [<arg1> <arg2> ...]\n");
+    printf("          -c <Scheme commands> [<arg1> <arg2> ...]\n");
+    printf("assuming that the executable is named tinyscheme.\n");
+    printf("Use - as filename for stdin.\n");
+    return 1;
+  }
+  if(!scheme_init(&sc)) {
+    fprintf(stderr,"Could not initialize!\n");
+    return 2;
+  }
+  scheme_set_input_port_file(&sc, stdin);
+  scheme_set_output_port_file(&sc, stdout);
+#if USE_DL
+  scheme_define(&sc,sc.global_env,mk_symbol(&sc,"load-extension"),mk_foreign_func(&sc, scm_load_ext));
+#endif
+  argv++;
+  if(g_access(file_name,0)!=0) {
+    char *p=getenv("TINYSCHEMEINIT");
+    if(p!=0) {
+      file_name=p;
+    }
+  }
+  do {
+    if(strcmp(file_name,"-")==0) {
+      fin=stdin;
+    } else if(strcmp(file_name,"-1")==0 || strcmp(file_name,"-c")==0) {
+      pointer args=sc.NIL;
+      isfile=file_name[1]=='1';
+      file_name=*argv++;
+      if(strcmp(file_name,"-")==0) {
+        fin=stdin;
+      } else if(isfile) {
+        fin=g_fopen(file_name,"r");
+      }
+      for(;*argv;argv++) {
+        pointer value=mk_string(&sc,*argv);
+        args=cons(&sc,value,args);
+      }
+      args=reverse_in_place(&sc,sc.NIL,args);
+      scheme_define(&sc,sc.global_env,mk_symbol(&sc,"*args*"),args);
+
+    } else {
+      fin=g_fopen(file_name,"r");
+    }
+    if(isfile && fin==0) {
+      fprintf(stderr,"Could not open file %s\n",file_name);
+    } else {
+      if(isfile) {
+        scheme_load_named_file(&sc,fin,file_name);
+      } else {
+        scheme_load_string(&sc,file_name);
+      }
+      if(!isfile || fin!=stdin) {
+        if(sc.retcode!=0) {
+          fprintf(stderr,"Errors encountered reading %s\n",file_name);
+        }
+        if(isfile) {
+          fclose(fin);
+        }
+      }
+    }
+    file_name=*argv++;
+  } while(file_name!=0);
+  if(argc==1) {
+    scheme_load_named_file(&sc,stdin,0);
+  }
+  retcode=sc.retcode;
+  scheme_deinit(&sc);
+
+  return retcode;
+}
+
+#endif
+
+/*
+Local variables:
+c-file-style: "k&r"
+End:
+*/
diff --git a/plug-ins/script-fu/tinyscheme/scheme.h b/plug-ins/script-fu/tinyscheme/scheme.h
new file mode 100644
index 0000000..198182c
--- /dev/null
+++ b/plug-ins/script-fu/tinyscheme/scheme.h
@@ -0,0 +1,273 @@
+/* SCHEME.H */
+
+#ifndef _SCHEME_H
+#define _SCHEME_H
+
+#include <stdio.h>
+#include <glib.h>
+#include <glib/gstdio.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * Default values for #define'd symbols
+ */
+#ifndef STANDALONE       /* If used as standalone interpreter */
+# define STANDALONE 1
+#endif
+
+#ifndef _MSC_VER
+# ifndef USE_STRLWR
+#   define USE_STRLWR 1
+# endif
+# define SCHEME_EXPORT extern
+#else
+# define USE_STRLWR 0
+# ifdef _SCHEME_SOURCE
+#  define SCHEME_EXPORT __declspec(dllexport)
+# else
+#  define SCHEME_EXPORT __declspec(dllimport)
+# endif
+#endif
+
+#if USE_NO_FEATURES
+# define USE_MATH 0
+# define USE_CHAR_CLASSIFIERS 0
+# define USE_ASCII_NAMES 0
+# define USE_STRING_PORTS 0
+# define USE_ERROR_HOOK 0
+# define USE_TRACING 0
+# define USE_COLON_HOOK 0
+# define USE_DL 0
+# define USE_PLIST 0
+#endif
+
+/*
+ * Leave it defined if you want continuations, and also for the Sharp Zaurus.
+ * Undefine it if you only care about faster speed and not strict Scheme compatibility.
+ */
+#define USE_SCHEME_STACK
+
+#if USE_DL
+# define USE_INTERFACE 1
+#endif
+
+
+#ifndef USE_MATH         /* If math support is needed */
+# define USE_MATH 1
+#endif
+
+#ifndef USE_CHAR_CLASSIFIERS  /* If char classifiers are needed */
+# define USE_CHAR_CLASSIFIERS 1
+#endif
+
+#ifndef USE_ASCII_NAMES  /* If extended escaped characters are needed */
+# define USE_ASCII_NAMES 1
+#endif
+
+#ifndef USE_STRING_PORTS      /* Enable string ports */
+# define USE_STRING_PORTS 1
+#endif
+
+#ifndef USE_TRACING
+# define USE_TRACING 1
+#endif
+
+#ifndef USE_PLIST
+# define USE_PLIST 0
+#endif
+
+/* To force system errors through user-defined error handling (see *error-hook*) */
+#ifndef USE_ERROR_HOOK
+# define USE_ERROR_HOOK 1
+#endif
+
+#ifndef USE_COLON_HOOK   /* Enable qualified qualifier */
+# define USE_COLON_HOOK 1
+#endif
+
+#ifndef USE_STRLWR
+# define USE_STRLWR 1
+#endif
+
+#ifndef STDIO_ADDS_CR    /* Define if DOS/Windows */
+# define STDIO_ADDS_CR 0
+#endif
+
+#ifndef INLINE
+# define INLINE
+#endif
+
+#ifndef USE_INTERFACE
+# define USE_INTERFACE 0
+#endif
+
+#ifndef SHOW_ERROR_LINE   /* Show error line in file */
+# define SHOW_ERROR_LINE 1
+#endif
+
+typedef struct scheme scheme;
+typedef struct cell *pointer;
+
+typedef void * (*func_alloc)(size_t);
+typedef void (*func_dealloc)(void *);
+
+/* num, for generic arithmetic */
+typedef struct num {
+     char is_fixnum;
+     union {
+          long ivalue;
+          double rvalue;
+     } value;
+} num;
+
+#if !STANDALONE
+
+typedef enum { TS_OUTPUT_NORMAL, TS_OUTPUT_ERROR } TsOutputType;
+
+typedef void (* ts_output_func)       (TsOutputType    type,
+                                       const char     *string,
+                                       int             len,
+                                       gpointer        data);
+
+SCHEME_EXPORT void ts_register_output_func (ts_output_func  func,
+                                            gpointer        user_data);
+SCHEME_EXPORT void ts_output_string        (TsOutputType    type,
+                                            const char     *string,
+                                            int             len);
+#endif
+
+SCHEME_EXPORT scheme *scheme_init_new(void);
+SCHEME_EXPORT scheme *scheme_init_new_custom_alloc(func_alloc malloc, func_dealloc free);
+SCHEME_EXPORT int scheme_init(scheme *sc);
+SCHEME_EXPORT int scheme_init_custom_alloc(scheme *sc, func_alloc, func_dealloc);
+SCHEME_EXPORT void scheme_deinit(scheme *sc);
+SCHEME_EXPORT void scheme_set_input_port_file(scheme *sc, FILE *fin);
+void scheme_set_input_port_string(scheme *sc, char *start, char *past_the_end);
+SCHEME_EXPORT void scheme_set_output_port_file(scheme *sc, FILE *fin);
+void scheme_set_output_port_string(scheme *sc, char *start, char *past_the_end);
+SCHEME_EXPORT void scheme_load_file(scheme *sc, FILE *fin);
+SCHEME_EXPORT void scheme_load_named_file(scheme *sc, FILE *fin, const char *filename);
+SCHEME_EXPORT void scheme_load_string(scheme *sc, const char *cmd);
+SCHEME_EXPORT pointer scheme_apply0(scheme *sc, const char *procname);
+SCHEME_EXPORT pointer scheme_call(scheme *sc, pointer func, pointer args);
+SCHEME_EXPORT pointer scheme_eval(scheme *sc, pointer obj);
+void scheme_set_external_data(scheme *sc, void *p);
+SCHEME_EXPORT void scheme_define(scheme *sc, pointer env, pointer symbol, pointer value);
+
+typedef pointer (*foreign_func)(scheme *, pointer);
+
+pointer _cons(scheme *sc, pointer a, pointer b, int immutable);
+pointer mk_integer(scheme *sc, long num);
+pointer mk_real(scheme *sc, double num);
+pointer mk_symbol(scheme *sc, const char *name);
+pointer gensym(scheme *sc);
+pointer mk_string(scheme *sc, const char *str);
+pointer mk_counted_string(scheme *sc, const char *str, int len);
+pointer mk_empty_string(scheme *sc, int len, gunichar fill);
+pointer mk_character(scheme *sc, gunichar c);
+pointer mk_foreign_func(scheme *sc, foreign_func f);
+void    putcharacter(scheme *sc, gunichar c);
+void    putstr(scheme *sc, const char *s);
+int list_length(scheme *sc, pointer a);
+int eqv(pointer a, pointer b);
+
+SCHEME_EXPORT pointer foreign_error (scheme *sc, const char *s, pointer a);
+
+#if USE_INTERFACE
+struct scheme_interface {
+  void (*scheme_define)(scheme *sc, pointer env, pointer symbol, pointer value);
+  pointer (*cons)(scheme *sc, pointer a, pointer b);
+  pointer (*immutable_cons)(scheme *sc, pointer a, pointer b);
+  pointer (*reserve_cells)(scheme *sc, int n);
+  pointer (*mk_integer)(scheme *sc, long num);
+  pointer (*mk_real)(scheme *sc, double num);
+  pointer (*mk_symbol)(scheme *sc, const char *name);
+  pointer (*gensym)(scheme *sc);
+  pointer (*mk_string)(scheme *sc, const char *str);
+  pointer (*mk_counted_string)(scheme *sc, const char *str, int len);
+  pointer (*mk_character)(scheme *sc, gunichar c);
+  pointer (*mk_vector)(scheme *sc, int len);
+  pointer (*mk_foreign_func)(scheme *sc, foreign_func f);
+  pointer (*mk_closure)(scheme *sc, pointer c, pointer e);
+  void (*putstr)(scheme *sc, const char *s);
+  void (*putcharacter)(scheme *sc, gunichar c);
+
+  int (*is_string)(pointer p);
+  int (*string_length)(pointer p);
+  char *(*string_value)(pointer p);
+  int (*is_number)(pointer p);
+  num (*nvalue)(pointer p);
+  long (*ivalue)(pointer p);
+  double (*rvalue)(pointer p);
+  int (*is_integer)(pointer p);
+  int (*is_real)(pointer p);
+  int (*is_character)(pointer p);
+  gunichar (*charvalue)(pointer p);
+  int (*is_list)(scheme *sc, pointer p);
+  int (*is_vector)(pointer p);
+  int (*list_length)(scheme *sc, pointer p);
+  long (*vector_length)(pointer vec);
+  void (*fill_vector)(pointer vec, pointer elem);
+  pointer (*vector_elem)(pointer vec, int ielem);
+  pointer (*set_vector_elem)(pointer vec, int ielem, pointer newel);
+
+  int (*is_port)(pointer p);
+
+  int (*is_pair)(pointer p);
+  pointer (*pair_car)(pointer p);
+  pointer (*pair_cdr)(pointer p);
+  pointer (*set_car)(pointer p, pointer q);
+  pointer (*set_cdr)(pointer p, pointer q);
+
+  int (*is_symbol)(pointer p);
+  char *(*symname)(pointer p);
+
+  int (*is_syntax)(pointer p);
+  int (*is_proc)(pointer p);
+  int (*is_foreign)(pointer p);
+  char *(*syntaxname)(pointer p);
+  int (*is_closure)(pointer p);
+  int (*is_macro)(pointer p);
+  pointer (*closure_code)(pointer p);
+  pointer (*closure_env)(pointer p);
+
+  int (*is_continuation)(pointer p);
+  int (*is_promise)(pointer p);
+  int (*is_environment)(pointer p);
+  int (*is_immutable)(pointer p);
+  void (*setimmutable)(pointer p);
+
+  void (*load_file)(scheme *sc, FILE *fin);
+  void (*load_string)(scheme *sc, const char *input);
+};
+#endif
+
+#if !STANDALONE
+typedef struct scheme_registerable
+{
+  foreign_func  f;
+  const char *  name;
+}
+scheme_registerable;
+
+void scheme_register_foreign_func(scheme * sc, scheme_registerable * sr);
+void scheme_register_foreign_func_list(scheme * sc,
+                                      scheme_registerable * list,
+                                      int n);
+
+#endif /* !STANDALONE */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+
+/*
+Local variables:
+c-file-style: "k&r"
+End:
+*/