Adding upstream version 2:8.1.0875.upstream/2%8.1.0875upstream

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

1 files changed, 1741 insertions, 0 deletions

diff --git a/src/if_ruby.c b/src/if_ruby.c
new file mode 100644
index 0000000..24814a2
--- /dev/null
+++ b/src/if_ruby.c
@@ -0,0 +1,1741 @@
+/* vi:set ts=8 sts=4 sw=4 noet:
+ *
+ * VIM - Vi IMproved	by Bram Moolenaar
+ *
+ * Ruby interface by Shugo Maeda
+ *   with improvements by SegPhault (Ryan Paul)
+ *   with improvements by Jon Maken
+ *
+ * Do ":help uganda"  in Vim to read copying and usage conditions.
+ * Do ":help credits" in Vim to see a list of people who contributed.
+ * See README.txt for an overview of the Vim source code.
+ */
+
+#include "protodef.h"
+#ifdef HAVE_CONFIG_H
+# include "auto/config.h"
+#endif
+
+#include <stdio.h>
+#include <string.h>
+
+#ifdef _WIN32
+# if !defined(DYNAMIC_RUBY_VER) || (DYNAMIC_RUBY_VER < 18)
+#   define NT
+# endif
+# ifndef DYNAMIC_RUBY
+#  define IMPORT /* For static dll usage __declspec(dllimport) */
+#  define RUBYEXTERN __declspec(dllimport)
+# endif
+#endif
+#ifndef RUBYEXTERN
+# define RUBYEXTERN extern
+#endif
+
+#if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 24
+# define USE_RUBY_INTEGER
+#endif
+
+#ifdef DYNAMIC_RUBY
+/*
+ * This is tricky.  In ruby.h there is (inline) function rb_class_of()
+ * definition.  This function use these variables.  But we want function to
+ * use dll_* variables.
+ */
+# define rb_cFalseClass		(*dll_rb_cFalseClass)
+# define rb_cFixnum		(*dll_rb_cFixnum)
+# if defined(USE_RUBY_INTEGER)
+#  define rb_cInteger		(*dll_rb_cInteger)
+# endif
+# if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 20
+#  define rb_cFloat		(*dll_rb_cFloat)
+# endif
+# define rb_cNilClass		(*dll_rb_cNilClass)
+# define rb_cString		(*dll_rb_cString)
+# define rb_cSymbol		(*dll_rb_cSymbol)
+# define rb_cTrueClass		(*dll_rb_cTrueClass)
+# if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 18
+/*
+ * On ver 1.8, all Ruby functions are exported with "__declspec(dllimport)"
+ * in ruby.h.  But it causes trouble for these variables, because it is
+ * defined in this file.  When defined this RUBY_EXPORT it modified to
+ * "extern" and be able to avoid this problem.
+ */
+#  define RUBY_EXPORT
+# endif
+
+#if !(defined(WIN32) || defined(_WIN64))
+# include <dlfcn.h>
+# define HINSTANCE void*
+# define RUBY_PROC void*
+# define load_dll(n) dlopen((n), RTLD_LAZY|RTLD_GLOBAL)
+# define symbol_from_dll dlsym
+# define close_dll dlclose
+#else
+# define RUBY_PROC FARPROC
+# define load_dll vimLoadLib
+# define symbol_from_dll GetProcAddress
+# define close_dll FreeLibrary
+#endif
+
+#endif  /* ifdef DYNAMIC_RUBY */
+
+/* suggested by Ariya Mizutani */
+#if (_MSC_VER == 1200)
+# undef _WIN32_WINNT
+#endif
+
+#if (defined(RUBY_VERSION) && RUBY_VERSION >= 19) \
+    || (defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 19)
+# define RUBY19_OR_LATER 1
+#endif
+
+#if (defined(RUBY_VERSION) && RUBY_VERSION >= 20) \
+    || (defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 20)
+# define RUBY20_OR_LATER 1
+#endif
+
+#if (defined(RUBY_VERSION) && RUBY_VERSION >= 21) \
+    || (defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 21)
+# define RUBY21_OR_LATER 1
+#endif
+
+#if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 19
+/* Ruby 1.9 defines a number of static functions which use rb_num2long and
+ * rb_int2big */
+# define rb_num2long rb_num2long_stub
+# define rb_int2big rb_int2big_stub
+#endif
+
+#if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 19 \
+	&& VIM_SIZEOF_INT < VIM_SIZEOF_LONG
+/* Ruby 1.9 defines a number of static functions which use rb_fix2int and
+ * rb_num2int if VIM_SIZEOF_INT < VIM_SIZEOF_LONG (64bit) */
+# define rb_fix2int rb_fix2int_stub
+# define rb_num2int rb_num2int_stub
+#endif
+
+#if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER == 21
+/* Ruby 2.1 adds new GC called RGenGC and RARRAY_PTR uses
+ * rb_gc_writebarrier_unprotect_promoted if USE_RGENGC  */
+# define rb_gc_writebarrier_unprotect_promoted rb_gc_writebarrier_unprotect_promoted_stub
+#endif
+#if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 22
+# define rb_gc_writebarrier_unprotect rb_gc_writebarrier_unprotect_stub
+#endif
+
+#if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 26
+# define rb_ary_detransient rb_ary_detransient_stub
+#endif
+
+#include <ruby.h>
+#ifdef RUBY19_OR_LATER
+# include <ruby/encoding.h>
+#endif
+
+#undef off_t	/* ruby defines off_t as _int64, Mingw uses long */
+#undef EXTERN
+#undef _
+
+/* T_DATA defined both by Ruby and Mac header files, hack around it... */
+#if defined(MACOS_X)
+# define __OPENTRANSPORT__
+# define __OPENTRANSPORTPROTOCOL__
+# define __OPENTRANSPORTPROVIDERS__
+#endif
+
+/*
+ * The TypedData_XXX macro family can be used since Ruby 1.9.2 but
+ * rb_data_type_t changed in 1.9.3, therefore require at least 2.0.
+ * The old Data_XXX macro family was deprecated on Ruby 2.2.
+ * Use TypedData_XXX if available.
+ */
+#if defined(TypedData_Wrap_Struct) && defined(RUBY20_OR_LATER)
+# define USE_TYPEDDATA	1
+#endif
+
+/*
+ * Backward compatibility for Ruby 1.8 and earlier.
+ * Ruby 1.9 does not provide STR2CSTR, instead StringValuePtr is provided.
+ * Ruby 1.9 does not provide RXXX(s)->len and RXXX(s)->ptr, instead
+ * RXXX_LEN(s) and RXXX_PTR(s) are provided.
+ */
+#ifndef StringValuePtr
+# define StringValuePtr(s) STR2CSTR(s)
+#endif
+#ifndef RARRAY_LEN
+# define RARRAY_LEN(s) RARRAY(s)->len
+#endif
+#ifndef RARRAY_PTR
+# define RARRAY_PTR(s) RARRAY(s)->ptr
+#endif
+#ifndef RSTRING_LEN
+# define RSTRING_LEN(s) RSTRING(s)->len
+#endif
+#ifndef RSTRING_PTR
+# define RSTRING_PTR(s) RSTRING(s)->ptr
+#endif
+
+#ifdef HAVE_DUP
+# undef HAVE_DUP
+#endif
+
+#include "vim.h"
+#include "version.h"
+
+#if defined(PROTO) && !defined(FEAT_RUBY)
+/* Define these to be able to generate the function prototypes. */
+# define VALUE int
+# define RUBY_DATA_FUNC int
+#endif
+
+static int ruby_initialized = 0;
+static void *ruby_stack_start;
+static VALUE objtbl;
+
+static VALUE mVIM;
+static VALUE cBuffer;
+static VALUE cVimWindow;
+static VALUE eDeletedBufferError;
+static VALUE eDeletedWindowError;
+
+static int ensure_ruby_initialized(void);
+static void error_print(int);
+static void ruby_io_init(void);
+static void ruby_vim_init(void);
+
+#if defined(RUBY19_OR_LATER) || defined(RUBY_INIT_STACK)
+# if defined(__ia64) && !defined(ruby_init_stack)
+#  define ruby_init_stack(addr) ruby_init_stack((addr), rb_ia64_bsp())
+# endif
+#endif
+
+#if defined(DYNAMIC_RUBY) || defined(PROTO)
+# if defined(PROTO) && !defined(HINSTANCE)
+#  define HINSTANCE int		/* for generating prototypes */
+# endif
+
+/*
+ * Wrapper defines
+ */
+# define rb_assoc_new			dll_rb_assoc_new
+# define rb_cObject			(*dll_rb_cObject)
+# define rb_class_new_instance		dll_rb_class_new_instance
+# define rb_check_type			dll_rb_check_type
+# ifdef USE_TYPEDDATA
+#  define rb_check_typeddata		dll_rb_check_typeddata
+# endif
+# define rb_class_path			dll_rb_class_path
+# ifdef USE_TYPEDDATA
+#  if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 23
+#   define rb_data_typed_object_wrap	dll_rb_data_typed_object_wrap
+#  else
+#   define rb_data_typed_object_alloc	dll_rb_data_typed_object_alloc
+#  endif
+# else
+#  define rb_data_object_alloc		dll_rb_data_object_alloc
+# endif
+# define rb_define_class_under		dll_rb_define_class_under
+# define rb_define_const			dll_rb_define_const
+# define rb_define_global_function	dll_rb_define_global_function
+# define rb_define_method		dll_rb_define_method
+# define rb_define_module		dll_rb_define_module
+# define rb_define_module_function	dll_rb_define_module_function
+# define rb_define_singleton_method	dll_rb_define_singleton_method
+# define rb_define_virtual_variable	dll_rb_define_virtual_variable
+# define rb_stdout			(*dll_rb_stdout)
+# define rb_stderr			(*dll_rb_stderr)
+# define rb_eArgError			(*dll_rb_eArgError)
+# define rb_eIndexError			(*dll_rb_eIndexError)
+# define rb_eRuntimeError		(*dll_rb_eRuntimeError)
+# define rb_eStandardError		(*dll_rb_eStandardError)
+# define rb_eval_string_protect		dll_rb_eval_string_protect
+# ifdef RUBY21_OR_LATER
+#  define rb_funcallv			dll_rb_funcallv
+# else
+#  define rb_funcall2			dll_rb_funcall2
+# endif
+# define rb_global_variable		dll_rb_global_variable
+# define rb_hash_aset			dll_rb_hash_aset
+# define rb_hash_new			dll_rb_hash_new
+# define rb_inspect			dll_rb_inspect
+# define rb_int2inum			dll_rb_int2inum
+
+// ruby.h may redefine rb_intern to use RUBY_CONST_ID_CACHE(), but that won't
+// work.  Not using the cache appears to be the best solution.
+# undef rb_intern
+# define rb_intern			dll_rb_intern
+
+# if VIM_SIZEOF_INT < VIM_SIZEOF_LONG /* 64 bits only */
+#  if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER <= 18
+#   define rb_fix2int			dll_rb_fix2int
+#   define rb_num2int			dll_rb_num2int
+#  endif
+#  define rb_num2uint			dll_rb_num2uint
+# endif
+# define rb_lastline_get			dll_rb_lastline_get
+# define rb_lastline_set			dll_rb_lastline_set
+# define rb_protect			dll_rb_protect
+# define rb_load			dll_rb_load
+# ifndef RUBY19_OR_LATER
+#  define rb_num2long			dll_rb_num2long
+# endif
+# if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER <= 19
+#  define rb_num2ulong			dll_rb_num2ulong
+# endif
+# define rb_obj_alloc			dll_rb_obj_alloc
+# define rb_obj_as_string		dll_rb_obj_as_string
+# define rb_obj_id			dll_rb_obj_id
+# define rb_raise			dll_rb_raise
+# define rb_str_cat			dll_rb_str_cat
+# define rb_str_concat			dll_rb_str_concat
+# undef rb_str_new
+# define rb_str_new			dll_rb_str_new
+# ifdef rb_str_new2
+/* Ruby may #define rb_str_new2 to use rb_str_new_cstr. */
+#  define need_rb_str_new_cstr 1
+/* Ruby's headers #define rb_str_new_cstr to make use of GCC's
+ * __builtin_constant_p extension. */
+#  undef rb_str_new_cstr
+#  define rb_str_new_cstr		dll_rb_str_new_cstr
+# else
+#  define rb_str_new2			dll_rb_str_new2
+# endif
+# if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 18
+#  define rb_string_value		dll_rb_string_value
+#  define rb_string_value_ptr		dll_rb_string_value_ptr
+#  define rb_float_new			dll_rb_float_new
+#  define rb_ary_new			dll_rb_ary_new
+#  ifdef rb_ary_new4
+#    define RB_ARY_NEW4_MACRO 1
+#    undef rb_ary_new4
+#  endif
+#  define rb_ary_new4			dll_rb_ary_new4
+#  define rb_ary_push			dll_rb_ary_push
+#  if defined(RUBY19_OR_LATER) || defined(RUBY_INIT_STACK)
+#   ifdef __ia64
+#    define rb_ia64_bsp			dll_rb_ia64_bsp
+#    undef ruby_init_stack
+#    define ruby_init_stack(addr)	dll_ruby_init_stack((addr), rb_ia64_bsp())
+#   else
+#    define ruby_init_stack		dll_ruby_init_stack
+#   endif
+#  endif
+# else
+#  define rb_str2cstr			dll_rb_str2cstr
+# endif
+# ifdef RUBY19_OR_LATER
+#  define rb_errinfo			dll_rb_errinfo
+# else
+#  define ruby_errinfo			(*dll_ruby_errinfo)
+# endif
+# define ruby_init			dll_ruby_init
+# define ruby_init_loadpath		dll_ruby_init_loadpath
+# ifdef WIN3264
+#  ifdef RUBY19_OR_LATER
+#   define ruby_sysinit			dll_ruby_sysinit
+#  else
+#   define NtInitialize			dll_NtInitialize
+#  endif
+#  if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 18
+#   define rb_w32_snprintf		dll_rb_w32_snprintf
+#  endif
+# endif
+
+# ifdef RUBY19_OR_LATER
+#  define ruby_script			dll_ruby_script
+#  define rb_enc_find_index		dll_rb_enc_find_index
+#  define rb_enc_find			dll_rb_enc_find
+#  undef rb_enc_str_new
+#  define rb_enc_str_new		dll_rb_enc_str_new
+#  define rb_sprintf			dll_rb_sprintf
+#  define rb_require			dll_rb_require
+#  define ruby_options			dll_ruby_options
+# endif
+
+/*
+ * Pointers for dynamic link
+ */
+static VALUE (*dll_rb_assoc_new) (VALUE, VALUE);
+VALUE *dll_rb_cFalseClass;
+VALUE *dll_rb_cFixnum;
+# if defined(USE_RUBY_INTEGER)
+VALUE *dll_rb_cInteger;
+# endif
+# if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 20
+VALUE *dll_rb_cFloat;
+# endif
+VALUE *dll_rb_cNilClass;
+static VALUE *dll_rb_cObject;
+VALUE *dll_rb_cString;
+VALUE *dll_rb_cSymbol;
+VALUE *dll_rb_cTrueClass;
+static VALUE (*dll_rb_class_new_instance) (int,VALUE*,VALUE);
+static void (*dll_rb_check_type) (VALUE,int);
+# ifdef USE_TYPEDDATA
+static void *(*dll_rb_check_typeddata) (VALUE,const rb_data_type_t *);
+# endif
+static VALUE (*dll_rb_class_path) (VALUE);
+# ifdef USE_TYPEDDATA
+#  if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 23
+static VALUE (*dll_rb_data_typed_object_wrap) (VALUE, void*, const rb_data_type_t *);
+#  else
+static VALUE (*dll_rb_data_typed_object_alloc) (VALUE, void*, const rb_data_type_t *);
+#  endif
+# else
+static VALUE (*dll_rb_data_object_alloc) (VALUE, void*, RUBY_DATA_FUNC, RUBY_DATA_FUNC);
+# endif
+static VALUE (*dll_rb_define_class_under) (VALUE, const char*, VALUE);
+static void (*dll_rb_define_const) (VALUE,const char*,VALUE);
+static void (*dll_rb_define_global_function) (const char*,VALUE(*)(),int);
+static void (*dll_rb_define_method) (VALUE,const char*,VALUE(*)(),int);
+static VALUE (*dll_rb_define_module) (const char*);
+static void (*dll_rb_define_module_function) (VALUE,const char*,VALUE(*)(),int);
+static void (*dll_rb_define_singleton_method) (VALUE,const char*,VALUE(*)(),int);
+static void (*dll_rb_define_virtual_variable) (const char*,VALUE(*)(),void(*)());
+static VALUE *dll_rb_stdout;
+static VALUE *dll_rb_stderr;
+static VALUE *dll_rb_eArgError;
+static VALUE *dll_rb_eIndexError;
+static VALUE *dll_rb_eRuntimeError;
+static VALUE *dll_rb_eStandardError;
+static VALUE (*dll_rb_eval_string_protect) (const char*, int*);
+# ifdef RUBY21_OR_LATER
+static VALUE (*dll_rb_funcallv) (VALUE, ID, int, const VALUE*);
+# else
+static VALUE (*dll_rb_funcall2) (VALUE, ID, int, const VALUE*);
+# endif
+static void (*dll_rb_global_variable) (VALUE*);
+static VALUE (*dll_rb_hash_aset) (VALUE, VALUE, VALUE);
+static VALUE (*dll_rb_hash_new) (void);
+static VALUE (*dll_rb_inspect) (VALUE);
+static VALUE (*dll_rb_int2inum) (long);
+static ID (*dll_rb_intern) (const char*);
+# if VIM_SIZEOF_INT < VIM_SIZEOF_LONG /* 64 bits only */
+static long (*dll_rb_fix2int) (VALUE);
+static long (*dll_rb_num2int) (VALUE);
+static unsigned long (*dll_rb_num2uint) (VALUE);
+# endif
+static VALUE (*dll_rb_lastline_get) (void);
+static void (*dll_rb_lastline_set) (VALUE);
+static VALUE (*dll_rb_protect) (VALUE (*)(VALUE), VALUE, int*);
+static void (*dll_rb_load) (VALUE, int);
+static long (*dll_rb_num2long) (VALUE);
+static unsigned long (*dll_rb_num2ulong) (VALUE);
+static VALUE (*dll_rb_obj_alloc) (VALUE);
+static VALUE (*dll_rb_obj_as_string) (VALUE);
+static VALUE (*dll_rb_obj_id) (VALUE);
+static void (*dll_rb_raise) (VALUE, const char*, ...);
+# if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 18
+static VALUE (*dll_rb_string_value) (volatile VALUE*);
+# else
+static char *(*dll_rb_str2cstr) (VALUE,int*);
+# endif
+static VALUE (*dll_rb_str_cat) (VALUE, const char*, long);
+static VALUE (*dll_rb_str_concat) (VALUE, VALUE);
+static VALUE (*dll_rb_str_new) (const char*, long);
+# ifdef need_rb_str_new_cstr
+/* Ruby may #define rb_str_new2 to use rb_str_new_cstr. */
+static VALUE (*dll_rb_str_new_cstr) (const char*);
+# else
+static VALUE (*dll_rb_str_new2) (const char*);
+# endif
+# ifdef RUBY19_OR_LATER
+static VALUE (*dll_rb_errinfo) (void);
+# else
+static VALUE *dll_ruby_errinfo;
+# endif
+static void (*dll_ruby_init) (void);
+static void (*dll_ruby_init_loadpath) (void);
+# ifdef WIN3264
+#  ifdef RUBY19_OR_LATER
+static void (*dll_ruby_sysinit) (int*, char***);
+#  else
+static void (*dll_NtInitialize) (int*, char***);
+#  endif
+#  if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 18
+static int (*dll_rb_w32_snprintf)(char*, size_t, const char*, ...);
+#  endif
+# endif
+# if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 18
+static char * (*dll_rb_string_value_ptr) (volatile VALUE*);
+static VALUE (*dll_rb_float_new) (double);
+static VALUE (*dll_rb_ary_new) (void);
+static VALUE (*dll_rb_ary_new4) (long n, const VALUE *elts);
+static VALUE (*dll_rb_ary_push) (VALUE, VALUE);
+#  if DYNAMIC_RUBY_VER >= 26
+static void (*dll_rb_ary_detransient) (VALUE);
+#  endif
+#  if defined(RUBY19_OR_LATER) || defined(RUBY_INIT_STACK)
+#   ifdef __ia64
+static void * (*dll_rb_ia64_bsp) (void);
+static void (*dll_ruby_init_stack)(VALUE*, void*);
+#   else
+static void (*dll_ruby_init_stack)(VALUE*);
+#   endif
+#  endif
+# endif
+# ifdef RUBY19_OR_LATER
+static VALUE (*dll_rb_int2big)(SIGNED_VALUE);
+# endif
+
+# ifdef RUBY19_OR_LATER
+static void (*dll_ruby_script) (const char*);
+static int (*dll_rb_enc_find_index) (const char*);
+static rb_encoding* (*dll_rb_enc_find) (const char*);
+static VALUE (*dll_rb_enc_str_new) (const char*, long, rb_encoding*);
+static VALUE (*dll_rb_sprintf) (const char*, ...);
+static VALUE (*dll_rb_require) (const char*);
+static void* (*ruby_options)(int, char**);
+# endif
+
+# if defined(USE_RGENGC) && USE_RGENGC
+#  if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER == 21
+static void (*dll_rb_gc_writebarrier_unprotect_promoted)(VALUE);
+#  else
+static void (*dll_rb_gc_writebarrier_unprotect)(VALUE obj);
+#  endif
+# endif
+
+# if defined(RUBY19_OR_LATER) && !defined(PROTO)
+#  if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 22
+long rb_num2long_stub(VALUE x)
+#  else
+SIGNED_VALUE rb_num2long_stub(VALUE x)
+#  endif
+{
+    return dll_rb_num2long(x);
+}
+#  if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 26
+VALUE rb_int2big_stub(intptr_t x)
+#  else
+VALUE rb_int2big_stub(SIGNED_VALUE x)
+#  endif
+{
+    return dll_rb_int2big(x);
+}
+#  if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 19 \
+	&& VIM_SIZEOF_INT < VIM_SIZEOF_LONG
+long rb_fix2int_stub(VALUE x)
+{
+    return dll_rb_fix2int(x);
+}
+long rb_num2int_stub(VALUE x)
+{
+    return dll_rb_num2int(x);
+}
+#  endif
+#  if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 20
+VALUE
+rb_float_new_in_heap(double d)
+{
+    return dll_rb_float_new(d);
+}
+#   if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 22
+unsigned long rb_num2ulong(VALUE x)
+#   else
+VALUE rb_num2ulong(VALUE x)
+#   endif
+{
+    return (long)RSHIFT((SIGNED_VALUE)(x),1);
+}
+#  endif
+# endif
+
+   /* Do not generate a prototype here, VALUE isn't always defined. */
+# if defined(USE_RGENGC) && USE_RGENGC && !defined(PROTO)
+#  if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER == 21
+void rb_gc_writebarrier_unprotect_promoted_stub(VALUE obj)
+{
+    dll_rb_gc_writebarrier_unprotect_promoted(obj);
+}
+#  else
+void rb_gc_writebarrier_unprotect_stub(VALUE obj)
+{
+    dll_rb_gc_writebarrier_unprotect(obj);
+}
+#  endif
+# endif
+
+# if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 26
+void rb_ary_detransient_stub(VALUE x)
+{
+    dll_rb_ary_detransient(x);
+}
+# endif
+
+static HINSTANCE hinstRuby = NULL; /* Instance of ruby.dll */
+
+/*
+ * Table of name to function pointer of ruby.
+ */
+static struct
+{
+    char *name;
+    RUBY_PROC *ptr;
+} ruby_funcname_table[] =
+{
+    {"rb_assoc_new", (RUBY_PROC*)&dll_rb_assoc_new},
+    {"rb_cFalseClass", (RUBY_PROC*)&dll_rb_cFalseClass},
+# if defined(USE_RUBY_INTEGER)
+    {"rb_cInteger", (RUBY_PROC*)&dll_rb_cInteger},
+# else
+    {"rb_cFixnum", (RUBY_PROC*)&dll_rb_cFixnum},
+# endif
+# if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 20
+    {"rb_cFloat", (RUBY_PROC*)&dll_rb_cFloat},
+# endif
+    {"rb_cNilClass", (RUBY_PROC*)&dll_rb_cNilClass},
+    {"rb_cObject", (RUBY_PROC*)&dll_rb_cObject},
+    {"rb_cString", (RUBY_PROC*)&dll_rb_cString},
+    {"rb_cSymbol", (RUBY_PROC*)&dll_rb_cSymbol},
+    {"rb_cTrueClass", (RUBY_PROC*)&dll_rb_cTrueClass},
+    {"rb_class_new_instance", (RUBY_PROC*)&dll_rb_class_new_instance},
+    {"rb_check_type", (RUBY_PROC*)&dll_rb_check_type},
+# ifdef USE_TYPEDDATA
+    {"rb_check_typeddata", (RUBY_PROC*)&dll_rb_check_typeddata},
+# endif
+    {"rb_class_path", (RUBY_PROC*)&dll_rb_class_path},
+# ifdef USE_TYPEDDATA
+#  if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 23
+    {"rb_data_typed_object_wrap", (RUBY_PROC*)&dll_rb_data_typed_object_wrap},
+#  else
+    {"rb_data_typed_object_alloc", (RUBY_PROC*)&dll_rb_data_typed_object_alloc},
+#  endif
+# else
+    {"rb_data_object_alloc", (RUBY_PROC*)&dll_rb_data_object_alloc},
+# endif
+    {"rb_define_class_under", (RUBY_PROC*)&dll_rb_define_class_under},
+    {"rb_define_const", (RUBY_PROC*)&dll_rb_define_const},
+    {"rb_define_global_function", (RUBY_PROC*)&dll_rb_define_global_function},
+    {"rb_define_method", (RUBY_PROC*)&dll_rb_define_method},
+    {"rb_define_module", (RUBY_PROC*)&dll_rb_define_module},
+    {"rb_define_module_function", (RUBY_PROC*)&dll_rb_define_module_function},
+    {"rb_define_singleton_method", (RUBY_PROC*)&dll_rb_define_singleton_method},
+    {"rb_define_virtual_variable", (RUBY_PROC*)&dll_rb_define_virtual_variable},
+    {"rb_stdout", (RUBY_PROC*)&dll_rb_stdout},
+    {"rb_stderr", (RUBY_PROC*)&dll_rb_stderr},
+    {"rb_eArgError", (RUBY_PROC*)&dll_rb_eArgError},
+    {"rb_eIndexError", (RUBY_PROC*)&dll_rb_eIndexError},
+    {"rb_eRuntimeError", (RUBY_PROC*)&dll_rb_eRuntimeError},
+    {"rb_eStandardError", (RUBY_PROC*)&dll_rb_eStandardError},
+    {"rb_eval_string_protect", (RUBY_PROC*)&dll_rb_eval_string_protect},
+# ifdef RUBY21_OR_LATER
+    {"rb_funcallv", (RUBY_PROC*)&dll_rb_funcallv},
+# else
+    {"rb_funcall2", (RUBY_PROC*)&dll_rb_funcall2},
+# endif
+    {"rb_global_variable", (RUBY_PROC*)&dll_rb_global_variable},
+    {"rb_hash_aset", (RUBY_PROC*)&dll_rb_hash_aset},
+    {"rb_hash_new", (RUBY_PROC*)&dll_rb_hash_new},
+    {"rb_inspect", (RUBY_PROC*)&dll_rb_inspect},
+    {"rb_int2inum", (RUBY_PROC*)&dll_rb_int2inum},
+    {"rb_intern", (RUBY_PROC*)&dll_rb_intern},
+# if VIM_SIZEOF_INT < VIM_SIZEOF_LONG /* 64 bits only */
+    {"rb_fix2int", (RUBY_PROC*)&dll_rb_fix2int},
+    {"rb_num2int", (RUBY_PROC*)&dll_rb_num2int},
+    {"rb_num2uint", (RUBY_PROC*)&dll_rb_num2uint},
+# endif
+    {"rb_lastline_get", (RUBY_PROC*)&dll_rb_lastline_get},
+    {"rb_lastline_set", (RUBY_PROC*)&dll_rb_lastline_set},
+    {"rb_protect", (RUBY_PROC*)&dll_rb_protect},
+    {"rb_load", (RUBY_PROC*)&dll_rb_load},
+    {"rb_num2long", (RUBY_PROC*)&dll_rb_num2long},
+    {"rb_num2ulong", (RUBY_PROC*)&dll_rb_num2ulong},
+    {"rb_obj_alloc", (RUBY_PROC*)&dll_rb_obj_alloc},
+    {"rb_obj_as_string", (RUBY_PROC*)&dll_rb_obj_as_string},
+    {"rb_obj_id", (RUBY_PROC*)&dll_rb_obj_id},
+    {"rb_raise", (RUBY_PROC*)&dll_rb_raise},
+# if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 18
+    {"rb_string_value", (RUBY_PROC*)&dll_rb_string_value},
+# else
+    {"rb_str2cstr", (RUBY_PROC*)&dll_rb_str2cstr},
+# endif
+    {"rb_str_cat", (RUBY_PROC*)&dll_rb_str_cat},
+    {"rb_str_concat", (RUBY_PROC*)&dll_rb_str_concat},
+    {"rb_str_new", (RUBY_PROC*)&dll_rb_str_new},
+# ifdef need_rb_str_new_cstr
+    {"rb_str_new_cstr", (RUBY_PROC*)&dll_rb_str_new_cstr},
+# else
+    {"rb_str_new2", (RUBY_PROC*)&dll_rb_str_new2},
+# endif
+# ifdef RUBY19_OR_LATER
+    {"rb_errinfo", (RUBY_PROC*)&dll_rb_errinfo},
+# else
+    {"ruby_errinfo", (RUBY_PROC*)&dll_ruby_errinfo},
+# endif
+    {"ruby_init", (RUBY_PROC*)&dll_ruby_init},
+    {"ruby_init_loadpath", (RUBY_PROC*)&dll_ruby_init_loadpath},
+# ifdef WIN3264
+#  ifdef RUBY19_OR_LATER
+    {"ruby_sysinit", (RUBY_PROC*)&dll_ruby_sysinit},
+#  else
+    {"NtInitialize", (RUBY_PROC*)&dll_NtInitialize},
+#  endif
+#  if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 18
+    {"rb_w32_snprintf", (RUBY_PROC*)&dll_rb_w32_snprintf},
+#  endif
+# endif
+# if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER >= 18
+    {"rb_string_value_ptr", (RUBY_PROC*)&dll_rb_string_value_ptr},
+#  if DYNAMIC_RUBY_VER <= 19
+    {"rb_float_new", (RUBY_PROC*)&dll_rb_float_new},
+#  else
+    {"rb_float_new_in_heap", (RUBY_PROC*)&dll_rb_float_new},
+#  endif
+    {"rb_ary_new", (RUBY_PROC*)&dll_rb_ary_new},
+#  ifdef RB_ARY_NEW4_MACRO
+    {"rb_ary_new_from_values", (RUBY_PROC*)&dll_rb_ary_new4},
+#  else
+    {"rb_ary_new4", (RUBY_PROC*)&dll_rb_ary_new4},
+#  endif
+    {"rb_ary_push", (RUBY_PROC*)&dll_rb_ary_push},
+#  if DYNAMIC_RUBY_VER >= 26
+    {"rb_ary_detransient", (RUBY_PROC*)&dll_rb_ary_detransient},
+#  endif
+# endif
+# ifdef RUBY19_OR_LATER
+    {"rb_int2big", (RUBY_PROC*)&dll_rb_int2big},
+    {"ruby_script", (RUBY_PROC*)&dll_ruby_script},
+    {"rb_enc_find_index", (RUBY_PROC*)&dll_rb_enc_find_index},
+    {"rb_enc_find", (RUBY_PROC*)&dll_rb_enc_find},
+    {"rb_enc_str_new", (RUBY_PROC*)&dll_rb_enc_str_new},
+    {"rb_sprintf", (RUBY_PROC*)&dll_rb_sprintf},
+    {"rb_require", (RUBY_PROC*)&dll_rb_require},
+    {"ruby_options", (RUBY_PROC*)&dll_ruby_options},
+# endif
+# if defined(RUBY19_OR_LATER) || defined(RUBY_INIT_STACK)
+#  ifdef __ia64
+    {"rb_ia64_bsp", (RUBY_PROC*)&dll_rb_ia64_bsp},
+#  endif
+    {"ruby_init_stack", (RUBY_PROC*)&dll_ruby_init_stack},
+# endif
+# if defined(USE_RGENGC) && USE_RGENGC
+#  if defined(DYNAMIC_RUBY_VER) && DYNAMIC_RUBY_VER == 21
+    {"rb_gc_writebarrier_unprotect_promoted", (RUBY_PROC*)&dll_rb_gc_writebarrier_unprotect_promoted},
+#  else
+    {"rb_gc_writebarrier_unprotect", (RUBY_PROC*)&dll_rb_gc_writebarrier_unprotect},
+#  endif
+# endif
+    {"", NULL},
+};
+
+/*
+ * Free ruby.dll
+ */
+    static void
+end_dynamic_ruby(void)
+{
+    if (hinstRuby)
+    {
+	close_dll(hinstRuby);
+	hinstRuby = NULL;
+    }
+}
+
+/*
+ * Load library and get all pointers.
+ * Parameter 'libname' provides name of DLL.
+ * Return OK or FAIL.
+ */
+    static int
+ruby_runtime_link_init(char *libname, int verbose)
+{
+    int i;
+
+    if (hinstRuby)
+	return OK;
+    hinstRuby = load_dll(libname);
+    if (!hinstRuby)
+    {
+	if (verbose)
+	    semsg(_(e_loadlib), libname);
+	return FAIL;
+    }
+
+    for (i = 0; ruby_funcname_table[i].ptr; ++i)
+    {
+	if (!(*ruby_funcname_table[i].ptr = symbol_from_dll(hinstRuby,
+			ruby_funcname_table[i].name)))
+	{
+	    close_dll(hinstRuby);
+	    hinstRuby = NULL;
+	    if (verbose)
+		semsg(_(e_loadfunc), ruby_funcname_table[i].name);
+	    return FAIL;
+	}
+    }
+    return OK;
+}
+
+/*
+ * If ruby is enabled (there is installed ruby on Windows system) return TRUE,
+ * else FALSE.
+ */
+    int
+ruby_enabled(int verbose)
+{
+    return ruby_runtime_link_init((char *)p_rubydll, verbose) == OK;
+}
+#endif /* defined(DYNAMIC_RUBY) || defined(PROTO) */
+
+    void
+ruby_end(void)
+{
+#ifdef DYNAMIC_RUBY
+    end_dynamic_ruby();
+#endif
+}
+
+void ex_ruby(exarg_T *eap)
+{
+    int state;
+    char *script = NULL;
+
+    script = (char *)script_get(eap, eap->arg);
+    if (!eap->skip && ensure_ruby_initialized())
+    {
+	if (script == NULL)
+	    rb_eval_string_protect((char *)eap->arg, &state);
+	else
+	    rb_eval_string_protect(script, &state);
+	if (state)
+	    error_print(state);
+    }
+    vim_free(script);
+}
+
+/*
+ *  In Ruby 1.9 or later, ruby String object has encoding.
+ *  conversion buffer string of vim to ruby String object using
+ *  VIM encoding option.
+ */
+    static VALUE
+vim_str2rb_enc_str(const char *s)
+{
+#ifdef RUBY19_OR_LATER
+    int isnum;
+    long lval;
+    char_u *sval;
+    rb_encoding *enc;
+
+    isnum = get_option_value((char_u *)"enc", &lval, &sval, 0);
+    if (isnum == 0)
+    {
+	enc = rb_enc_find((char *)sval);
+	vim_free(sval);
+	if (enc)
+	{
+	    return rb_enc_str_new(s, (long)strlen(s), enc);
+	}
+    }
+#endif
+    return rb_str_new2(s);
+}
+
+    static VALUE
+eval_enc_string_protect(const char *str, int *state)
+{
+#ifdef RUBY19_OR_LATER
+    int isnum;
+    long lval;
+    char_u *sval;
+    rb_encoding *enc;
+    VALUE v;
+
+    isnum = get_option_value((char_u *)"enc", &lval, &sval, 0);
+    if (isnum == 0)
+    {
+	enc = rb_enc_find((char *)sval);
+	vim_free(sval);
+	if (enc)
+	{
+	    v = rb_sprintf("#-*- coding:%s -*-\n%s", rb_enc_name(enc), str);
+	    return rb_eval_string_protect(StringValuePtr(v), state);
+	}
+    }
+#endif
+    return rb_eval_string_protect(str, state);
+}
+
+void ex_rubydo(exarg_T *eap)
+{
+    int state;
+    linenr_T i;
+    buf_T   *was_curbuf = curbuf;
+
+    if (ensure_ruby_initialized())
+    {
+	if (u_save(eap->line1 - 1, eap->line2 + 1) != OK)
+	    return;
+	for (i = eap->line1; i <= eap->line2; i++)
+	{
+	    VALUE line;
+
+	    if (i > curbuf->b_ml.ml_line_count)
+		break;
+	    line = vim_str2rb_enc_str((char *)ml_get(i));
+	    rb_lastline_set(line);
+	    eval_enc_string_protect((char *) eap->arg, &state);
+	    if (state)
+	    {
+		error_print(state);
+		break;
+	    }
+	    if (was_curbuf != curbuf)
+		break;
+	    line = rb_lastline_get();
+	    if (!NIL_P(line))
+	    {
+		if (TYPE(line) != T_STRING)
+		{
+		    emsg(_("E265: $_ must be an instance of String"));
+		    return;
+		}
+		ml_replace(i, (char_u *) StringValuePtr(line), 1);
+		changed();
+#ifdef SYNTAX_HL
+		syn_changed(i); /* recompute syntax hl. for this line */
+#endif
+	    }
+	}
+	check_cursor();
+	update_curbuf(NOT_VALID);
+    }
+}
+
+static VALUE rb_load_wrap(VALUE file_to_load)
+{
+    rb_load(file_to_load, 0);
+    return Qnil;
+}
+
+void ex_rubyfile(exarg_T *eap)
+{
+    int state;
+
+    if (ensure_ruby_initialized())
+    {
+	VALUE file_to_load = rb_str_new2((const char *)eap->arg);
+	rb_protect(rb_load_wrap, file_to_load, &state);
+	if (state)
+	    error_print(state);
+    }
+}
+
+void ruby_buffer_free(buf_T *buf)
+{
+    if (buf->b_ruby_ref)
+    {
+	rb_hash_aset(objtbl, rb_obj_id((VALUE) buf->b_ruby_ref), Qnil);
+	RDATA(buf->b_ruby_ref)->data = NULL;
+    }
+}
+
+void ruby_window_free(win_T *win)
+{
+    if (win->w_ruby_ref)
+    {
+	rb_hash_aset(objtbl, rb_obj_id((VALUE) win->w_ruby_ref), Qnil);
+	RDATA(win->w_ruby_ref)->data = NULL;
+    }
+}
+
+static int ensure_ruby_initialized(void)
+{
+    if (!ruby_initialized)
+    {
+#ifdef DYNAMIC_RUBY
+	if (ruby_enabled(TRUE))
+	{
+#endif
+#ifdef _WIN32
+	    /* suggested by Ariya Mizutani */
+	    int argc = 1;
+	    char *argv[] = {"gvim.exe"};
+	    char **argvp = argv;
+# ifdef RUBY19_OR_LATER
+	    ruby_sysinit(&argc, &argvp);
+# else
+	    NtInitialize(&argc, &argvp);
+# endif
+#endif
+	    {
+#if defined(RUBY19_OR_LATER) || defined(RUBY_INIT_STACK)
+		ruby_init_stack(ruby_stack_start);
+#endif
+		ruby_init();
+	    }
+#ifdef RUBY19_OR_LATER
+	    {
+		int dummy_argc = 2;
+		char *dummy_argv[] = {"vim-ruby", "-e_=0"};
+		ruby_options(dummy_argc, dummy_argv);
+	    }
+	    ruby_script("vim-ruby");
+#else
+	    ruby_init_loadpath();
+#endif
+	    ruby_io_init();
+	    ruby_vim_init();
+	    ruby_initialized = 1;
+#ifdef DYNAMIC_RUBY
+	}
+	else
+	{
+	    emsg(_("E266: Sorry, this command is disabled, the Ruby library could not be loaded."));
+	    return 0;
+	}
+#endif
+    }
+    return ruby_initialized;
+}
+
+static void error_print(int state)
+{
+#if !defined(DYNAMIC_RUBY) && !defined(RUBY19_OR_LATER)
+    RUBYEXTERN VALUE ruby_errinfo;
+#endif
+    VALUE error;
+    VALUE eclass;
+    VALUE einfo;
+    VALUE bt;
+    int attr;
+    char buff[BUFSIZ];
+    long i;
+
+#define TAG_RETURN	0x1
+#define TAG_BREAK	0x2
+#define TAG_NEXT	0x3
+#define TAG_RETRY	0x4
+#define TAG_REDO	0x5
+#define TAG_RAISE	0x6
+#define TAG_THROW	0x7
+#define TAG_FATAL	0x8
+#define TAG_MASK	0xf
+
+    switch (state)
+    {
+    case TAG_RETURN:
+	emsg(_("E267: unexpected return"));
+	break;
+    case TAG_NEXT:
+	emsg(_("E268: unexpected next"));
+	break;
+    case TAG_BREAK:
+	emsg(_("E269: unexpected break"));
+	break;
+    case TAG_REDO:
+	emsg(_("E270: unexpected redo"));
+	break;
+    case TAG_RETRY:
+	emsg(_("E271: retry outside of rescue clause"));
+	break;
+    case TAG_RAISE:
+    case TAG_FATAL:
+#ifdef RUBY19_OR_LATER
+	error = rb_errinfo();
+#else
+	error = ruby_errinfo;
+#endif
+	eclass = CLASS_OF(error);
+	einfo = rb_obj_as_string(error);
+	if (eclass == rb_eRuntimeError && RSTRING_LEN(einfo) == 0)
+	{
+	    emsg(_("E272: unhandled exception"));
+	}
+	else
+	{
+	    VALUE epath;
+	    char *p;
+
+	    epath = rb_class_path(eclass);
+	    vim_snprintf(buff, BUFSIZ, "%s: %s",
+		     RSTRING_PTR(epath), RSTRING_PTR(einfo));
+	    p = strchr(buff, '\n');
+	    if (p) *p = '\0';
+	    emsg(buff);
+	}
+
+	attr = syn_name2attr((char_u *)"Error");
+# ifdef RUBY21_OR_LATER
+	bt = rb_funcallv(error, rb_intern("backtrace"), 0, 0);
+	for (i = 0; i < RARRAY_LEN(bt); i++)
+	    msg_attr(RSTRING_PTR(RARRAY_AREF(bt, i)), attr);
+# else
+	bt = rb_funcall2(error, rb_intern("backtrace"), 0, 0);
+	for (i = 0; i < RARRAY_LEN(bt); i++)
+	    msg_attr(RSTRING_PTR(RARRAY_PTR(bt)[i]), attr);
+# endif
+	break;
+    default:
+	vim_snprintf(buff, BUFSIZ, _("E273: unknown longjmp status %d"), state);
+	emsg(buff);
+	break;
+    }
+}
+
+static VALUE vim_message(VALUE self UNUSED, VALUE str)
+{
+    char *buff, *p;
+
+    str = rb_obj_as_string(str);
+    if (RSTRING_LEN(str) > 0)
+    {
+	/* Only do this when the string isn't empty, alloc(0) causes trouble. */
+	buff = ALLOCA_N(char, RSTRING_LEN(str) + 1);
+	strcpy(buff, RSTRING_PTR(str));
+	p = strchr(buff, '\n');
+	if (p) *p = '\0';
+	msg(buff);
+    }
+    else
+    {
+	msg("");
+    }
+    return Qnil;
+}
+
+static VALUE vim_set_option(VALUE self UNUSED, VALUE str)
+{
+    do_set((char_u *)StringValuePtr(str), 0);
+    update_screen(NOT_VALID);
+    return Qnil;
+}
+
+static VALUE vim_command(VALUE self UNUSED, VALUE str)
+{
+    do_cmdline_cmd((char_u *)StringValuePtr(str));
+    return Qnil;
+}
+
+#ifdef FEAT_EVAL
+static VALUE vim_to_ruby(typval_T *tv)
+{
+    VALUE result = Qnil;
+
+    if (tv->v_type == VAR_STRING)
+    {
+	result = rb_str_new2(tv->vval.v_string == NULL
+					  ? "" : (char *)(tv->vval.v_string));
+    }
+    else if (tv->v_type == VAR_NUMBER)
+    {
+	result = INT2NUM(tv->vval.v_number);
+    }
+# ifdef FEAT_FLOAT
+    else if (tv->v_type == VAR_FLOAT)
+    {
+	result = rb_float_new(tv->vval.v_float);
+    }
+# endif
+    else if (tv->v_type == VAR_LIST)
+    {
+	list_T      *list = tv->vval.v_list;
+	listitem_T  *curr;
+
+	result = rb_ary_new();
+
+	if (list != NULL)
+	{
+	    for (curr = list->lv_first; curr != NULL; curr = curr->li_next)
+	    {
+		rb_ary_push(result, vim_to_ruby(&curr->li_tv));
+	    }
+	}
+    }
+    else if (tv->v_type == VAR_DICT)
+    {
+	result = rb_hash_new();
+
+	if (tv->vval.v_dict != NULL)
+	{
+	    hashtab_T   *ht = &tv->vval.v_dict->dv_hashtab;
+	    long_u      todo = ht->ht_used;
+	    hashitem_T  *hi;
+	    dictitem_T  *di;
+
+	    for (hi = ht->ht_array; todo > 0; ++hi)
+	    {
+		if (!HASHITEM_EMPTY(hi))
+		{
+		    --todo;
+
+		    di = dict_lookup(hi);
+		    rb_hash_aset(result, rb_str_new2((char *)hi->hi_key),
+						     vim_to_ruby(&di->di_tv));
+		}
+	    }
+	}
+    }
+    else if (tv->v_type == VAR_SPECIAL)
+    {
+	if (tv->vval.v_number == VVAL_TRUE)
+	    result = Qtrue;
+	else if (tv->vval.v_number == VVAL_FALSE)
+	    result = Qfalse;
+    }
+    else if (tv->v_type == VAR_BLOB)
+    {
+	result = rb_str_new(tv->vval.v_blob->bv_ga.ga_data,
+		tv->vval.v_blob->bv_ga.ga_len);
+    }
+    /* else return Qnil; */
+
+    return result;
+}
+#endif
+
+static VALUE vim_evaluate(VALUE self UNUSED, VALUE str)
+{
+#ifdef FEAT_EVAL
+    typval_T    *tv;
+    VALUE       result;
+
+    tv = eval_expr((char_u *)StringValuePtr(str), NULL);
+    if (tv == NULL)
+    {
+	return Qnil;
+    }
+    result = vim_to_ruby(tv);
+
+    free_tv(tv);
+
+    return result;
+#else
+    return Qnil;
+#endif
+}
+
+#ifdef USE_TYPEDDATA
+static size_t buffer_dsize(const void *buf);
+
+static const rb_data_type_t buffer_type = {
+    "vim_buffer",
+    {0, 0, buffer_dsize, {0, 0}},
+    0, 0,
+# ifdef RUBY_TYPED_FREE_IMMEDIATELY
+    0,
+# endif
+};
+
+static size_t buffer_dsize(const void *buf UNUSED)
+{
+    return sizeof(buf_T);
+}
+#endif
+
+static VALUE buffer_new(buf_T *buf)
+{
+    if (buf->b_ruby_ref)
+    {
+	return (VALUE) buf->b_ruby_ref;
+    }
+    else
+    {
+#ifdef USE_TYPEDDATA
+	VALUE obj = TypedData_Wrap_Struct(cBuffer, &buffer_type, buf);
+#else
+	VALUE obj = Data_Wrap_Struct(cBuffer, 0, 0, buf);
+#endif
+	buf->b_ruby_ref = (void *) obj;
+	rb_hash_aset(objtbl, rb_obj_id(obj), obj);
+	return obj;
+    }
+}
+
+static buf_T *get_buf(VALUE obj)
+{
+    buf_T *buf;
+
+#ifdef USE_TYPEDDATA
+    TypedData_Get_Struct(obj, buf_T, &buffer_type, buf);
+#else
+    Data_Get_Struct(obj, buf_T, buf);
+#endif
+    if (buf == NULL)
+	rb_raise(eDeletedBufferError, "attempt to refer to deleted buffer");
+    return buf;
+}
+
+static VALUE vim_blob(VALUE self UNUSED, VALUE str)
+{
+    VALUE result = rb_str_new("0z", 2);
+    char    buf[4];
+    int	i;
+    for (i = 0; i < RSTRING_LEN(str); i++)
+    {
+	sprintf(buf, "%02X", RSTRING_PTR(str)[i]);
+	rb_str_concat(result, rb_str_new2(buf));
+    }
+    return result;
+}
+
+static VALUE buffer_s_current(void)
+{
+    return buffer_new(curbuf);
+}
+
+static VALUE buffer_s_count(void)
+{
+    buf_T *b;
+    int n = 0;
+
+    FOR_ALL_BUFFERS(b)
+    {
+	/*  Deleted buffers should not be counted
+	 *    SegPhault - 01/07/05 */
+	if (b->b_p_bl)
+	    n++;
+    }
+
+    return INT2NUM(n);
+}
+
+static VALUE buffer_s_aref(VALUE self UNUSED, VALUE num)
+{
+    buf_T *b;
+    int n = NUM2INT(num);
+
+    FOR_ALL_BUFFERS(b)
+    {
+	/*  Deleted buffers should not be counted
+	 *    SegPhault - 01/07/05 */
+	if (!b->b_p_bl)
+	    continue;
+
+	if (n == 0)
+	    return buffer_new(b);
+
+	n--;
+    }
+    return Qnil;
+}
+
+static VALUE buffer_name(VALUE self)
+{
+    buf_T *buf = get_buf(self);
+
+    return buf->b_ffname ? rb_str_new2((char *)buf->b_ffname) : Qnil;
+}
+
+static VALUE buffer_number(VALUE self)
+{
+    buf_T *buf = get_buf(self);
+
+    return INT2NUM(buf->b_fnum);
+}
+
+static VALUE buffer_count(VALUE self)
+{
+    buf_T *buf = get_buf(self);
+
+    return INT2NUM(buf->b_ml.ml_line_count);
+}
+
+static VALUE get_buffer_line(buf_T *buf, linenr_T n)
+{
+    if (n <= 0 || n > buf->b_ml.ml_line_count)
+	rb_raise(rb_eIndexError, "line number %ld out of range", (long)n);
+    return vim_str2rb_enc_str((char *)ml_get_buf(buf, n, FALSE));
+}
+
+static VALUE buffer_aref(VALUE self, VALUE num)
+{
+    buf_T *buf = get_buf(self);
+
+    if (buf != NULL)
+	return get_buffer_line(buf, (linenr_T)NUM2LONG(num));
+    return Qnil; /* For stop warning */
+}
+
+static VALUE set_buffer_line(buf_T *buf, linenr_T n, VALUE str)
+{
+    char	*line = StringValuePtr(str);
+    aco_save_T	aco;
+
+    if (n > 0 && n <= buf->b_ml.ml_line_count && line != NULL)
+    {
+	/* set curwin/curbuf for "buf" and save some things */
+	aucmd_prepbuf(&aco, buf);
+
+	if (u_savesub(n) == OK)
+	{
+	    ml_replace(n, (char_u *)line, TRUE);
+	    changed();
+#ifdef SYNTAX_HL
+	    syn_changed(n); /* recompute syntax hl. for this line */
+#endif
+	}
+
+	/* restore curwin/curbuf and a few other things */
+	aucmd_restbuf(&aco);
+	/* Careful: autocommands may have made "buf" invalid! */
+
+	update_curbuf(NOT_VALID);
+    }
+    else
+    {
+	rb_raise(rb_eIndexError, "line number %ld out of range", (long)n);
+    }
+    return str;
+}
+
+static VALUE buffer_aset(VALUE self, VALUE num, VALUE str)
+{
+    buf_T *buf = get_buf(self);
+
+    if (buf != NULL)
+	return set_buffer_line(buf, (linenr_T)NUM2LONG(num), str);
+    return str;
+}
+
+static VALUE buffer_delete(VALUE self, VALUE num)
+{
+    buf_T	*buf = get_buf(self);
+    long	n = NUM2LONG(num);
+    aco_save_T	aco;
+
+    if (n > 0 && n <= buf->b_ml.ml_line_count)
+    {
+	/* set curwin/curbuf for "buf" and save some things */
+	aucmd_prepbuf(&aco, buf);
+
+	if (u_savedel(n, 1) == OK)
+	{
+	    ml_delete(n, 0);
+
+	    /* Changes to non-active buffers should properly refresh
+	     *   SegPhault - 01/09/05 */
+	    deleted_lines_mark(n, 1L);
+
+	    changed();
+	}
+
+	/* restore curwin/curbuf and a few other things */
+	aucmd_restbuf(&aco);
+	/* Careful: autocommands may have made "buf" invalid! */
+
+	update_curbuf(NOT_VALID);
+    }
+    else
+    {
+	rb_raise(rb_eIndexError, "line number %ld out of range", n);
+    }
+    return Qnil;
+}
+
+static VALUE buffer_append(VALUE self, VALUE num, VALUE str)
+{
+    buf_T	*buf = get_buf(self);
+    char	*line = StringValuePtr(str);
+    long	n = NUM2LONG(num);
+    aco_save_T	aco;
+
+    if (line == NULL)
+    {
+	rb_raise(rb_eIndexError, "NULL line");
+    }
+    else if (n >= 0 && n <= buf->b_ml.ml_line_count)
+    {
+	/* set curwin/curbuf for "buf" and save some things */
+	aucmd_prepbuf(&aco, buf);
+
+	if (u_inssub(n + 1) == OK)
+	{
+	    ml_append(n, (char_u *) line, (colnr_T) 0, FALSE);
+
+	    /*  Changes to non-active buffers should properly refresh screen
+	     *    SegPhault - 12/20/04 */
+	    appended_lines_mark(n, 1L);
+
+	    changed();
+	}
+
+	/* restore curwin/curbuf and a few other things */
+	aucmd_restbuf(&aco);
+	/* Careful: autocommands may have made "buf" invalid! */
+
+	update_curbuf(NOT_VALID);
+    }
+    else
+    {
+	rb_raise(rb_eIndexError, "line number %ld out of range", n);
+    }
+    return str;
+}
+
+#ifdef USE_TYPEDDATA
+static size_t window_dsize(const void *buf);
+
+static const rb_data_type_t window_type = {
+    "vim_window",
+    {0, 0, window_dsize, {0, 0}},
+    0, 0,
+# ifdef RUBY_TYPED_FREE_IMMEDIATELY
+    0,
+# endif
+};
+
+static size_t window_dsize(const void *win UNUSED)
+{
+    return sizeof(win_T);
+}
+#endif
+
+static VALUE window_new(win_T *win)
+{
+    if (win->w_ruby_ref)
+    {
+	return (VALUE) win->w_ruby_ref;
+    }
+    else
+    {
+#ifdef USE_TYPEDDATA
+	VALUE obj = TypedData_Wrap_Struct(cVimWindow, &window_type, win);
+#else
+	VALUE obj = Data_Wrap_Struct(cVimWindow, 0, 0, win);
+#endif
+	win->w_ruby_ref = (void *) obj;
+	rb_hash_aset(objtbl, rb_obj_id(obj), obj);
+	return obj;
+    }
+}
+
+static win_T *get_win(VALUE obj)
+{
+    win_T *win;
+
+#ifdef USE_TYPEDDATA
+    TypedData_Get_Struct(obj, win_T, &window_type, win);
+#else
+    Data_Get_Struct(obj, win_T, win);
+#endif
+    if (win == NULL)
+	rb_raise(eDeletedWindowError, "attempt to refer to deleted window");
+    return win;
+}
+
+static VALUE window_s_current(void)
+{
+    return window_new(curwin);
+}
+
+/*
+ * Added line manipulation functions
+ *    SegPhault - 03/07/05
+ */
+static VALUE line_s_current(void)
+{
+    return get_buffer_line(curbuf, curwin->w_cursor.lnum);
+}
+
+static VALUE set_current_line(VALUE self UNUSED, VALUE str)
+{
+    return set_buffer_line(curbuf, curwin->w_cursor.lnum, str);
+}
+
+static VALUE current_line_number(void)
+{
+    return INT2FIX((int)curwin->w_cursor.lnum);
+}
+
+
+
+static VALUE window_s_count(void)
+{
+    win_T	*w;
+    int n = 0;
+
+    FOR_ALL_WINDOWS(w)
+	n++;
+    return INT2NUM(n);
+}
+
+static VALUE window_s_aref(VALUE self UNUSED, VALUE num)
+{
+    win_T *w;
+    int n = NUM2INT(num);
+
+    for (w = firstwin; w != NULL; w = w->w_next, --n)
+	if (n == 0)
+	    return window_new(w);
+    return Qnil;
+}
+
+static VALUE window_buffer(VALUE self)
+{
+    win_T *win = get_win(self);
+
+    return buffer_new(win->w_buffer);
+}
+
+static VALUE window_height(VALUE self)
+{
+    win_T *win = get_win(self);
+
+    return INT2NUM(win->w_height);
+}
+
+static VALUE window_set_height(VALUE self, VALUE height)
+{
+    win_T *win = get_win(self);
+    win_T *savewin = curwin;
+
+    curwin = win;
+    win_setheight(NUM2INT(height));
+    curwin = savewin;
+    return height;
+}
+
+static VALUE window_width(VALUE self UNUSED)
+{
+    return INT2NUM(get_win(self)->w_width);
+}
+
+static VALUE window_set_width(VALUE self UNUSED, VALUE width)
+{
+    win_T *win = get_win(self);
+    win_T *savewin = curwin;
+
+    curwin = win;
+    win_setwidth(NUM2INT(width));
+    curwin = savewin;
+    return width;
+}
+
+static VALUE window_cursor(VALUE self)
+{
+    win_T *win = get_win(self);
+
+    return rb_assoc_new(INT2NUM(win->w_cursor.lnum), INT2NUM(win->w_cursor.col));
+}
+
+static VALUE window_set_cursor(VALUE self, VALUE pos)
+{
+    VALUE lnum, col;
+    win_T *win = get_win(self);
+
+    Check_Type(pos, T_ARRAY);
+    if (RARRAY_LEN(pos) != 2)
+	rb_raise(rb_eArgError, "array length must be 2");
+    lnum = RARRAY_PTR(pos)[0];
+    col = RARRAY_PTR(pos)[1];
+    win->w_cursor.lnum = NUM2LONG(lnum);
+    win->w_cursor.col = NUM2UINT(col);
+    win->w_set_curswant = TRUE;
+    check_cursor();		    /* put cursor on an existing line */
+    update_screen(NOT_VALID);
+    return Qnil;
+}
+
+static VALUE f_nop(VALUE self UNUSED)
+{
+    return Qnil;
+}
+
+static VALUE f_p(int argc, VALUE *argv, VALUE self UNUSED)
+{
+    int i;
+    VALUE str = rb_str_new("", 0);
+    VALUE ret = Qnil;
+
+    for (i = 0; i < argc; i++)
+    {
+	if (i > 0) rb_str_cat(str, ", ", 2);
+	rb_str_concat(str, rb_inspect(argv[i]));
+    }
+    msg(RSTRING_PTR(str));
+
+    if (argc == 1)
+	ret = argv[0];
+    else if (argc > 1)
+	ret = rb_ary_new4(argc, argv);
+    return ret;
+}
+
+static void ruby_io_init(void)
+{
+#ifndef DYNAMIC_RUBY
+    RUBYEXTERN VALUE rb_stdout;
+    RUBYEXTERN VALUE rb_stderr;
+#endif
+
+    rb_stdout = rb_obj_alloc(rb_cObject);
+    rb_stderr = rb_obj_alloc(rb_cObject);
+    rb_define_singleton_method(rb_stdout, "write", vim_message, 1);
+    rb_define_singleton_method(rb_stdout, "flush", f_nop, 0);
+    rb_define_singleton_method(rb_stderr, "write", vim_message, 1);
+    rb_define_singleton_method(rb_stderr, "flush", f_nop, 0);
+    rb_define_global_function("p", f_p, -1);
+}
+
+static void ruby_vim_init(void)
+{
+    objtbl = rb_hash_new();
+    rb_global_variable(&objtbl);
+
+    /* The Vim module used to be called "VIM", but "Vim" is better.  Make an
+     * alias "VIM" for backwards compatibility. */
+    mVIM = rb_define_module("Vim");
+    rb_define_const(rb_cObject, "VIM", mVIM);
+    rb_define_const(mVIM, "VERSION_MAJOR", INT2NUM(VIM_VERSION_MAJOR));
+    rb_define_const(mVIM, "VERSION_MINOR", INT2NUM(VIM_VERSION_MINOR));
+    rb_define_const(mVIM, "VERSION_BUILD", INT2NUM(VIM_VERSION_BUILD));
+    rb_define_const(mVIM, "VERSION_PATCHLEVEL", INT2NUM(VIM_VERSION_PATCHLEVEL));
+    rb_define_const(mVIM, "VERSION_SHORT", rb_str_new2(VIM_VERSION_SHORT));
+    rb_define_const(mVIM, "VERSION_MEDIUM", rb_str_new2(VIM_VERSION_MEDIUM));
+    rb_define_const(mVIM, "VERSION_LONG", rb_str_new2(VIM_VERSION_LONG));
+    rb_define_const(mVIM, "VERSION_LONG_DATE", rb_str_new2(VIM_VERSION_LONG_DATE));
+    rb_define_module_function(mVIM, "message", vim_message, 1);
+    rb_define_module_function(mVIM, "set_option", vim_set_option, 1);
+    rb_define_module_function(mVIM, "command", vim_command, 1);
+    rb_define_module_function(mVIM, "evaluate", vim_evaluate, 1);
+    rb_define_module_function(mVIM, "blob", vim_blob, 1);
+
+    eDeletedBufferError = rb_define_class_under(mVIM, "DeletedBufferError",
+						rb_eStandardError);
+    eDeletedWindowError = rb_define_class_under(mVIM, "DeletedWindowError",
+						rb_eStandardError);
+
+    cBuffer = rb_define_class_under(mVIM, "Buffer", rb_cObject);
+    rb_define_singleton_method(cBuffer, "current", buffer_s_current, 0);
+    rb_define_singleton_method(cBuffer, "count", buffer_s_count, 0);
+    rb_define_singleton_method(cBuffer, "[]", buffer_s_aref, 1);
+    rb_define_method(cBuffer, "name", buffer_name, 0);
+    rb_define_method(cBuffer, "number", buffer_number, 0);
+    rb_define_method(cBuffer, "count", buffer_count, 0);
+    rb_define_method(cBuffer, "length", buffer_count, 0);
+    rb_define_method(cBuffer, "[]", buffer_aref, 1);
+    rb_define_method(cBuffer, "[]=", buffer_aset, 2);
+    rb_define_method(cBuffer, "delete", buffer_delete, 1);
+    rb_define_method(cBuffer, "append", buffer_append, 2);
+
+    /* Added line manipulation functions
+     *   SegPhault - 03/07/05 */
+    rb_define_method(cBuffer, "line_number", current_line_number, 0);
+    rb_define_method(cBuffer, "line", line_s_current, 0);
+    rb_define_method(cBuffer, "line=", set_current_line, 1);
+
+
+    cVimWindow = rb_define_class_under(mVIM, "Window", rb_cObject);
+    rb_define_singleton_method(cVimWindow, "current", window_s_current, 0);
+    rb_define_singleton_method(cVimWindow, "count", window_s_count, 0);
+    rb_define_singleton_method(cVimWindow, "[]", window_s_aref, 1);
+    rb_define_method(cVimWindow, "buffer", window_buffer, 0);
+    rb_define_method(cVimWindow, "height", window_height, 0);
+    rb_define_method(cVimWindow, "height=", window_set_height, 1);
+    rb_define_method(cVimWindow, "width", window_width, 0);
+    rb_define_method(cVimWindow, "width=", window_set_width, 1);
+    rb_define_method(cVimWindow, "cursor", window_cursor, 0);
+    rb_define_method(cVimWindow, "cursor=", window_set_cursor, 1);
+
+    rb_define_virtual_variable("$curbuf", buffer_s_current, 0);
+    rb_define_virtual_variable("$curwin", window_s_current, 0);
+}
+
+void vim_ruby_init(void *stack_start)
+{
+    /* should get machine stack start address early in main function */
+    ruby_stack_start = stack_start;
+}