27 files changed, 5593 insertions, 0 deletions
diff --git a/lib/Makefile.am b/lib/Makefile.am
new file mode 100644
index 0000000..e5bd626
--- /dev/null
+++ b/lib/Makefile.am
@@ -0,0 +1,68 @@
+## Process this file with automake to produce Makefile.in
+##
+## Copyright (C) 1994, 1995 Graeme Wilford.
+## Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 Colin Watson.
+##
+## This file is part of man-db.
+##
+## man-db 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 2 of the License, or
+## (at your option) any later version.
+##
+## man-db 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 man-db; if not, write to the Free Software Foundation,
+## Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+
+pkglib_LTLIBRARIES = libman.la
+dist_noinst_DATA = README
+
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+
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+	-I$(top_builddir)/include \
+	-I$(top_srcdir)/gl/lib \
+	-I$(top_builddir)/gl/lib \
+	-DLOCALEDIR=\"$(localedir)\" \
+	$(libpipeline_CFLAGS) \
+	$(libseccomp_CFLAGS)
+
+libman_la_SOURCES = \
+	appendstr.c \
+	cleanup.c \
+	cleanup.h \
+	debug.c \
+	encodings.c \
+	encodings.h \
+	glcontainers.c \
+	glcontainers.h \
+	linelength.c \
+	linelength.h \
+	orderfiles.c \
+	orderfiles.h \
+	pathsearch.c \
+	pathsearch.h \
+	sandbox.c \
+	sandbox.h \
+	security.c \
+	security.h \
+	tempfile.c \
+	util.c \
+	wordfnmatch.c \
+	wordfnmatch.h \
+	xregcomp.c \
+	xregcomp.h
+
+libman_la_LIBADD = ../gl/lib/libgnu.la $(LTLIBOBJS) \
+	@LTLIBINTL@
+
+libman_la_LDFLAGS = \
+	-avoid-version -release $(VERSION) -rpath $(pkglibdir) \
+	-no-undefined \
+	$(libpipeline_LIBS) \
+	$(libseccomp_LIBS)
diff --git a/lib/Makefile.in b/lib/Makefile.in
new file mode 100644
index 0000000..872757c
--- /dev/null
+++ b/lib/Makefile.in
@@ -0,0 +1,2040 @@
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+# 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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+GNULIB_VFPRINTF = @GNULIB_VFPRINTF@
+GNULIB_VFPRINTF_POSIX = @GNULIB_VFPRINTF_POSIX@
+GNULIB_VFSCANF = @GNULIB_VFSCANF@
+GNULIB_VPRINTF = @GNULIB_VPRINTF@
+GNULIB_VPRINTF_POSIX = @GNULIB_VPRINTF_POSIX@
+GNULIB_VSCANF = @GNULIB_VSCANF@
+GNULIB_VSNPRINTF = @GNULIB_VSNPRINTF@
+GNULIB_VSPRINTF_POSIX = @GNULIB_VSPRINTF_POSIX@
+GNULIB_WCPCPY = @GNULIB_WCPCPY@
+GNULIB_WCPNCPY = @GNULIB_WCPNCPY@
+GNULIB_WCRTOMB = @GNULIB_WCRTOMB@
+GNULIB_WCSCASECMP = @GNULIB_WCSCASECMP@
+GNULIB_WCSCAT = @GNULIB_WCSCAT@
+GNULIB_WCSCHR = @GNULIB_WCSCHR@
+GNULIB_WCSCMP = @GNULIB_WCSCMP@
+GNULIB_WCSCOLL = @GNULIB_WCSCOLL@
+GNULIB_WCSCPY = @GNULIB_WCSCPY@
+GNULIB_WCSCSPN = @GNULIB_WCSCSPN@
+GNULIB_WCSDUP = @GNULIB_WCSDUP@
+GNULIB_WCSFTIME = @GNULIB_WCSFTIME@
+GNULIB_WCSLEN = @GNULIB_WCSLEN@
+GNULIB_WCSNCASECMP = @GNULIB_WCSNCASECMP@
+GNULIB_WCSNCAT = @GNULIB_WCSNCAT@
+GNULIB_WCSNCMP = @GNULIB_WCSNCMP@
+GNULIB_WCSNCPY = @GNULIB_WCSNCPY@
+GNULIB_WCSNLEN = @GNULIB_WCSNLEN@
+GNULIB_WCSNRTOMBS = @GNULIB_WCSNRTOMBS@
+GNULIB_WCSPBRK = @GNULIB_WCSPBRK@
+GNULIB_WCSRCHR = @GNULIB_WCSRCHR@
+GNULIB_WCSRTOMBS = @GNULIB_WCSRTOMBS@
+GNULIB_WCSSPN = @GNULIB_WCSSPN@
+GNULIB_WCSSTR = @GNULIB_WCSSTR@
+GNULIB_WCSTOK = @GNULIB_WCSTOK@
+GNULIB_WCSWIDTH = @GNULIB_WCSWIDTH@
+GNULIB_WCSXFRM = @GNULIB_WCSXFRM@
+GNULIB_WCTOB = @GNULIB_WCTOB@
+GNULIB_WCTOMB = @GNULIB_WCTOMB@
+GNULIB_WCTRANS = @GNULIB_WCTRANS@
+GNULIB_WCTYPE = @GNULIB_WCTYPE@
+GNULIB_WCWIDTH = @GNULIB_WCWIDTH@
+GNULIB_WMEMCHR = @GNULIB_WMEMCHR@
+GNULIB_WMEMCMP = @GNULIB_WMEMCMP@
+GNULIB_WMEMCPY = @GNULIB_WMEMCPY@
+GNULIB_WMEMMOVE = @GNULIB_WMEMMOVE@
+GNULIB_WMEMPCPY = @GNULIB_WMEMPCPY@
+GNULIB_WMEMSET = @GNULIB_WMEMSET@
+GNULIB_WRITE = @GNULIB_WRITE@
+GNULIB__EXIT = @GNULIB__EXIT@
+GREP = @GREP@
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+HAVE_BTOWC = @HAVE_BTOWC@
+HAVE_C99_STDINT_H = @HAVE_C99_STDINT_H@
+HAVE_CANONICALIZE_FILE_NAME = @HAVE_CANONICALIZE_FILE_NAME@
+HAVE_CHOWN = @HAVE_CHOWN@
+HAVE_CLOSEDIR = @HAVE_CLOSEDIR@
+HAVE_COPY_FILE_RANGE = @HAVE_COPY_FILE_RANGE@
+HAVE_CRTDEFS_H = @HAVE_CRTDEFS_H@
+HAVE_DECL_DIRFD = @HAVE_DECL_DIRFD@
+HAVE_DECL_ENVIRON = @HAVE_DECL_ENVIRON@
+HAVE_DECL_FCHDIR = @HAVE_DECL_FCHDIR@
+HAVE_DECL_FDATASYNC = @HAVE_DECL_FDATASYNC@
+HAVE_DECL_FDOPENDIR = @HAVE_DECL_FDOPENDIR@
+HAVE_DECL_FPURGE = @HAVE_DECL_FPURGE@
+HAVE_DECL_FSEEKO = @HAVE_DECL_FSEEKO@
+HAVE_DECL_FTELLO = @HAVE_DECL_FTELLO@
+HAVE_DECL_GETDELIM = @HAVE_DECL_GETDELIM@
+HAVE_DECL_GETDOMAINNAME = @HAVE_DECL_GETDOMAINNAME@
+HAVE_DECL_GETLINE = @HAVE_DECL_GETLINE@
+HAVE_DECL_GETLOADAVG = @HAVE_DECL_GETLOADAVG@
+HAVE_DECL_GETLOGIN = @HAVE_DECL_GETLOGIN@
+HAVE_DECL_GETLOGIN_R = @HAVE_DECL_GETLOGIN_R@
+HAVE_DECL_GETPAGESIZE = @HAVE_DECL_GETPAGESIZE@
+HAVE_DECL_GETUSERSHELL = @HAVE_DECL_GETUSERSHELL@
+HAVE_DECL_IMAXABS = @HAVE_DECL_IMAXABS@
+HAVE_DECL_IMAXDIV = @HAVE_DECL_IMAXDIV@
+HAVE_DECL_INITSTATE = @HAVE_DECL_INITSTATE@
+HAVE_DECL_LOCALTIME_R = @HAVE_DECL_LOCALTIME_R@
+HAVE_DECL_MEMMEM = @HAVE_DECL_MEMMEM@
+HAVE_DECL_MEMRCHR = @HAVE_DECL_MEMRCHR@
+HAVE_DECL_OBSTACK_PRINTF = @HAVE_DECL_OBSTACK_PRINTF@
+HAVE_DECL_SETENV = @HAVE_DECL_SETENV@
+HAVE_DECL_SETHOSTNAME = @HAVE_DECL_SETHOSTNAME@
+HAVE_DECL_SETSTATE = @HAVE_DECL_SETSTATE@
+HAVE_DECL_SNPRINTF = @HAVE_DECL_SNPRINTF@
+HAVE_DECL_STRDUP = @HAVE_DECL_STRDUP@
+HAVE_DECL_STRERROR_R = @HAVE_DECL_STRERROR_R@
+HAVE_DECL_STRNCASECMP = @HAVE_DECL_STRNCASECMP@
+HAVE_DECL_STRNDUP = @HAVE_DECL_STRNDUP@
+HAVE_DECL_STRNLEN = @HAVE_DECL_STRNLEN@
+HAVE_DECL_STRSIGNAL = @HAVE_DECL_STRSIGNAL@
+HAVE_DECL_STRTOIMAX = @HAVE_DECL_STRTOIMAX@
+HAVE_DECL_STRTOK_R = @HAVE_DECL_STRTOK_R@
+HAVE_DECL_STRTOUMAX = @HAVE_DECL_STRTOUMAX@
+HAVE_DECL_TRUNCATE = @HAVE_DECL_TRUNCATE@
+HAVE_DECL_TTYNAME_R = @HAVE_DECL_TTYNAME_R@
+HAVE_DECL_UNSETENV = @HAVE_DECL_UNSETENV@
+HAVE_DECL_VSNPRINTF = @HAVE_DECL_VSNPRINTF@
+HAVE_DECL_WCTOB = @HAVE_DECL_WCTOB@
+HAVE_DECL_WCWIDTH = @HAVE_DECL_WCWIDTH@
+HAVE_DIRENT_H = @HAVE_DIRENT_H@
+HAVE_DPRINTF = @HAVE_DPRINTF@
+HAVE_DUP2 = @HAVE_DUP2@
+HAVE_DUP3 = @HAVE_DUP3@
+HAVE_DUPLOCALE = @HAVE_DUPLOCALE@
+HAVE_EUIDACCESS = @HAVE_EUIDACCESS@
+HAVE_EXPLICIT_BZERO = @HAVE_EXPLICIT_BZERO@
+HAVE_FACCESSAT = @HAVE_FACCESSAT@
+HAVE_FCHDIR = @HAVE_FCHDIR@
+HAVE_FCHMODAT = @HAVE_FCHMODAT@
+HAVE_FCHOWNAT = @HAVE_FCHOWNAT@
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+HAVE_FDOPENDIR = @HAVE_FDOPENDIR@
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+HAVE_FFS = @HAVE_FFS@
+HAVE_FFSL = @HAVE_FFSL@
+HAVE_FFSLL = @HAVE_FFSLL@
+HAVE_FLOCK = @HAVE_FLOCK@
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+HAVE_FNMATCH_H = @HAVE_FNMATCH_H@
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+HAVE_FSEEKO = @HAVE_FSEEKO@
+HAVE_FSTATAT = @HAVE_FSTATAT@
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+HAVE_FTELLO = @HAVE_FTELLO@
+HAVE_FTRUNCATE = @HAVE_FTRUNCATE@
+HAVE_FUTIMENS = @HAVE_FUTIMENS@
+HAVE_GETDTABLESIZE = @HAVE_GETDTABLESIZE@
+HAVE_GETENTROPY = @HAVE_GETENTROPY@
+HAVE_GETGROUPS = @HAVE_GETGROUPS@
+HAVE_GETHOSTNAME = @HAVE_GETHOSTNAME@
+HAVE_GETLOGIN = @HAVE_GETLOGIN@
+HAVE_GETOPT_H = @HAVE_GETOPT_H@
+HAVE_GETPAGESIZE = @HAVE_GETPAGESIZE@
+HAVE_GETPASS = @HAVE_GETPASS@
+HAVE_GETSUBOPT = @HAVE_GETSUBOPT@
+HAVE_GETTIMEOFDAY = @HAVE_GETTIMEOFDAY@
+HAVE_GLOB = @HAVE_GLOB@
+HAVE_GLOB_H = @HAVE_GLOB_H@
+HAVE_GLOB_PATTERN_P = @HAVE_GLOB_PATTERN_P@
+HAVE_GRANTPT = @HAVE_GRANTPT@
+HAVE_GROUP_MEMBER = @HAVE_GROUP_MEMBER@
+HAVE_IMAXDIV_T = @HAVE_IMAXDIV_T@
+HAVE_INITSTATE = @HAVE_INITSTATE@
+HAVE_INTTYPES_H = @HAVE_INTTYPES_H@
+HAVE_ISBLANK = @HAVE_ISBLANK@
+HAVE_ISWBLANK = @HAVE_ISWBLANK@
+HAVE_ISWCNTRL = @HAVE_ISWCNTRL@
+HAVE_LANGINFO_ALTMON = @HAVE_LANGINFO_ALTMON@
+HAVE_LANGINFO_CODESET = @HAVE_LANGINFO_CODESET@
+HAVE_LANGINFO_ERA = @HAVE_LANGINFO_ERA@
+HAVE_LANGINFO_H = @HAVE_LANGINFO_H@
+HAVE_LANGINFO_T_FMT_AMPM = @HAVE_LANGINFO_T_FMT_AMPM@
+HAVE_LANGINFO_YESEXPR = @HAVE_LANGINFO_YESEXPR@
+HAVE_LCHMOD = @HAVE_LCHMOD@
+HAVE_LCHOWN = @HAVE_LCHOWN@
+HAVE_LINK = @HAVE_LINK@
+HAVE_LINKAT = @HAVE_LINKAT@
+HAVE_LSTAT = @HAVE_LSTAT@
+HAVE_MAX_ALIGN_T = @HAVE_MAX_ALIGN_T@
+HAVE_MBRLEN = @HAVE_MBRLEN@
+HAVE_MBRTOWC = @HAVE_MBRTOWC@
+HAVE_MBSINIT = @HAVE_MBSINIT@
+HAVE_MBSLEN = @HAVE_MBSLEN@
+HAVE_MBSNRTOWCS = @HAVE_MBSNRTOWCS@
+HAVE_MBSRTOWCS = @HAVE_MBSRTOWCS@
+HAVE_MBTOWC = @HAVE_MBTOWC@
+HAVE_MEMCHR = @HAVE_MEMCHR@
+HAVE_MEMPCPY = @HAVE_MEMPCPY@
+HAVE_MKDIRAT = @HAVE_MKDIRAT@
+HAVE_MKDTEMP = @HAVE_MKDTEMP@
+HAVE_MKFIFO = @HAVE_MKFIFO@
+HAVE_MKFIFOAT = @HAVE_MKFIFOAT@
+HAVE_MKNOD = @HAVE_MKNOD@
+HAVE_MKNODAT = @HAVE_MKNODAT@
+HAVE_MKOSTEMP = @HAVE_MKOSTEMP@
+HAVE_MKOSTEMPS = @HAVE_MKOSTEMPS@
+HAVE_MKSTEMP = @HAVE_MKSTEMP@
+HAVE_MKSTEMPS = @HAVE_MKSTEMPS@
+HAVE_MSVC_INVALID_PARAMETER_HANDLER = @HAVE_MSVC_INVALID_PARAMETER_HANDLER@
+HAVE_NANOSLEEP = @HAVE_NANOSLEEP@
+HAVE_NEWLOCALE = @HAVE_NEWLOCALE@
+HAVE_NL_LANGINFO = @HAVE_NL_LANGINFO@
+HAVE_OPENAT = @HAVE_OPENAT@
+HAVE_OPENDIR = @HAVE_OPENDIR@
+HAVE_OS_H = @HAVE_OS_H@
+HAVE_PCLOSE = @HAVE_PCLOSE@
+HAVE_PIPE = @HAVE_PIPE@
+HAVE_PIPE2 = @HAVE_PIPE2@
+HAVE_POPEN = @HAVE_POPEN@
+HAVE_POSIX_OPENPT = @HAVE_POSIX_OPENPT@
+HAVE_POSIX_SIGNALBLOCKING = @HAVE_POSIX_SIGNALBLOCKING@
+HAVE_PREAD = @HAVE_PREAD@
+HAVE_PSELECT = @HAVE_PSELECT@
+HAVE_PTHREAD_SIGMASK = @HAVE_PTHREAD_SIGMASK@
+HAVE_PTSNAME = @HAVE_PTSNAME@
+HAVE_PTSNAME_R = @HAVE_PTSNAME_R@
+HAVE_PWRITE = @HAVE_PWRITE@
+HAVE_QSORT_R = @HAVE_QSORT_R@
+HAVE_RAISE = @HAVE_RAISE@
+HAVE_RANDOM = @HAVE_RANDOM@
+HAVE_RANDOM_H = @HAVE_RANDOM_H@
+HAVE_RANDOM_R = @HAVE_RANDOM_R@
+HAVE_RAWMEMCHR = @HAVE_RAWMEMCHR@
+HAVE_READDIR = @HAVE_READDIR@
+HAVE_READLINK = @HAVE_READLINK@
+HAVE_READLINKAT = @HAVE_READLINKAT@
+HAVE_REALLOCARRAY = @HAVE_REALLOCARRAY@
+HAVE_REALPATH = @HAVE_REALPATH@
+HAVE_RENAMEAT = @HAVE_RENAMEAT@
+HAVE_REWINDDIR = @HAVE_REWINDDIR@
+HAVE_RPMATCH = @HAVE_RPMATCH@
+HAVE_SA_FAMILY_T = @HAVE_SA_FAMILY_T@
+HAVE_SCANDIR = @HAVE_SCANDIR@
+HAVE_SECURE_GETENV = @HAVE_SECURE_GETENV@
+HAVE_SETENV = @HAVE_SETENV@
+HAVE_SETHOSTNAME = @HAVE_SETHOSTNAME@
+HAVE_SETSTATE = @HAVE_SETSTATE@
+HAVE_SIGACTION = @HAVE_SIGACTION@
+HAVE_SIGHANDLER_T = @HAVE_SIGHANDLER_T@
+HAVE_SIGINFO_T = @HAVE_SIGINFO_T@
+HAVE_SIGNED_SIG_ATOMIC_T = @HAVE_SIGNED_SIG_ATOMIC_T@
+HAVE_SIGNED_WCHAR_T = @HAVE_SIGNED_WCHAR_T@
+HAVE_SIGNED_WINT_T = @HAVE_SIGNED_WINT_T@
+HAVE_SIGSET_T = @HAVE_SIGSET_T@
+HAVE_SLEEP = @HAVE_SLEEP@
+HAVE_STDINT_H = @HAVE_STDINT_H@
+HAVE_STPCPY = @HAVE_STPCPY@
+HAVE_STPNCPY = @HAVE_STPNCPY@
+HAVE_STRCASECMP = @HAVE_STRCASECMP@
+HAVE_STRCASESTR = @HAVE_STRCASESTR@
+HAVE_STRCHRNUL = @HAVE_STRCHRNUL@
+HAVE_STRINGS_H = @HAVE_STRINGS_H@
+HAVE_STRPBRK = @HAVE_STRPBRK@
+HAVE_STRPTIME = @HAVE_STRPTIME@
+HAVE_STRSEP = @HAVE_STRSEP@
+HAVE_STRTOD = @HAVE_STRTOD@
+HAVE_STRTOLD = @HAVE_STRTOLD@
+HAVE_STRTOLL = @HAVE_STRTOLL@
+HAVE_STRTOULL = @HAVE_STRTOULL@
+HAVE_STRUCT_RANDOM_DATA = @HAVE_STRUCT_RANDOM_DATA@
+HAVE_STRUCT_SIGACTION_SA_SIGACTION = @HAVE_STRUCT_SIGACTION_SA_SIGACTION@
+HAVE_STRUCT_SOCKADDR_STORAGE = @HAVE_STRUCT_SOCKADDR_STORAGE@
+HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY = @HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY@
+HAVE_STRUCT_TIMEVAL = @HAVE_STRUCT_TIMEVAL@
+HAVE_STRVERSCMP = @HAVE_STRVERSCMP@
+HAVE_SYMLINK = @HAVE_SYMLINK@
+HAVE_SYMLINKAT = @HAVE_SYMLINKAT@
+HAVE_SYSEXITS_H = @HAVE_SYSEXITS_H@
+HAVE_SYS_BITYPES_H = @HAVE_SYS_BITYPES_H@
+HAVE_SYS_CDEFS_H = @HAVE_SYS_CDEFS_H@
+HAVE_SYS_FILE_H = @HAVE_SYS_FILE_H@
+HAVE_SYS_INTTYPES_H = @HAVE_SYS_INTTYPES_H@
+HAVE_SYS_IOCTL_H = @HAVE_SYS_IOCTL_H@
+HAVE_SYS_LOADAVG_H = @HAVE_SYS_LOADAVG_H@
+HAVE_SYS_PARAM_H = @HAVE_SYS_PARAM_H@
+HAVE_SYS_SELECT_H = @HAVE_SYS_SELECT_H@
+HAVE_SYS_SOCKET_H = @HAVE_SYS_SOCKET_H@
+HAVE_SYS_TIME_H = @HAVE_SYS_TIME_H@
+HAVE_SYS_TYPES_H = @HAVE_SYS_TYPES_H@
+HAVE_SYS_UIO_H = @HAVE_SYS_UIO_H@
+HAVE_TIMEGM = @HAVE_TIMEGM@
+HAVE_TIMEZONE_T = @HAVE_TIMEZONE_T@
+HAVE_TYPE_VOLATILE_SIG_ATOMIC_T = @HAVE_TYPE_VOLATILE_SIG_ATOMIC_T@
+HAVE_TZSET = @HAVE_TZSET@
+HAVE_UNISTD_H = @HAVE_UNISTD_H@
+HAVE_UNLINKAT = @HAVE_UNLINKAT@
+HAVE_UNLOCKPT = @HAVE_UNLOCKPT@
+HAVE_USLEEP = @HAVE_USLEEP@
+HAVE_UTIME = @HAVE_UTIME@
+HAVE_UTIMENSAT = @HAVE_UTIMENSAT@
+HAVE_UTIME_H = @HAVE_UTIME_H@
+HAVE_VASPRINTF = @HAVE_VASPRINTF@
+HAVE_VDPRINTF = @HAVE_VDPRINTF@
+HAVE_VISIBILITY = @HAVE_VISIBILITY@
+HAVE_WCHAR_H = @HAVE_WCHAR_H@
+HAVE_WCHAR_T = @HAVE_WCHAR_T@
+HAVE_WCPCPY = @HAVE_WCPCPY@
+HAVE_WCPNCPY = @HAVE_WCPNCPY@
+HAVE_WCRTOMB = @HAVE_WCRTOMB@
+HAVE_WCSCASECMP = @HAVE_WCSCASECMP@
+HAVE_WCSCAT = @HAVE_WCSCAT@
+HAVE_WCSCHR = @HAVE_WCSCHR@
+HAVE_WCSCMP = @HAVE_WCSCMP@
+HAVE_WCSCOLL = @HAVE_WCSCOLL@
+HAVE_WCSCPY = @HAVE_WCSCPY@
+HAVE_WCSCSPN = @HAVE_WCSCSPN@
+HAVE_WCSDUP = @HAVE_WCSDUP@
+HAVE_WCSFTIME = @HAVE_WCSFTIME@
+HAVE_WCSLEN = @HAVE_WCSLEN@
+HAVE_WCSNCASECMP = @HAVE_WCSNCASECMP@
+HAVE_WCSNCAT = @HAVE_WCSNCAT@
+HAVE_WCSNCMP = @HAVE_WCSNCMP@
+HAVE_WCSNCPY = @HAVE_WCSNCPY@
+HAVE_WCSNLEN = @HAVE_WCSNLEN@
+HAVE_WCSNRTOMBS = @HAVE_WCSNRTOMBS@
+HAVE_WCSPBRK = @HAVE_WCSPBRK@
+HAVE_WCSRCHR = @HAVE_WCSRCHR@
+HAVE_WCSRTOMBS = @HAVE_WCSRTOMBS@
+HAVE_WCSSPN = @HAVE_WCSSPN@
+HAVE_WCSSTR = @HAVE_WCSSTR@
+HAVE_WCSTOK = @HAVE_WCSTOK@
+HAVE_WCSWIDTH = @HAVE_WCSWIDTH@
+HAVE_WCSXFRM = @HAVE_WCSXFRM@
+HAVE_WCTRANS_T = @HAVE_WCTRANS_T@
+HAVE_WCTYPE_H = @HAVE_WCTYPE_H@
+HAVE_WCTYPE_T = @HAVE_WCTYPE_T@
+HAVE_WINSOCK2_H = @HAVE_WINSOCK2_H@
+HAVE_WINT_T = @HAVE_WINT_T@
+HAVE_WMEMCHR = @HAVE_WMEMCHR@
+HAVE_WMEMCMP = @HAVE_WMEMCMP@
+HAVE_WMEMCPY = @HAVE_WMEMCPY@
+HAVE_WMEMMOVE = @HAVE_WMEMMOVE@
+HAVE_WMEMPCPY = @HAVE_WMEMPCPY@
+HAVE_WMEMSET = @HAVE_WMEMSET@
+HAVE_WS2TCPIP_H = @HAVE_WS2TCPIP_H@
+HAVE_XLOCALE_H = @HAVE_XLOCALE_H@
+HAVE__BOOL = @HAVE__BOOL@
+HAVE__EXIT = @HAVE__EXIT@
+IGNORE_UNUSED_LIBRARIES_CFLAGS = @IGNORE_UNUSED_LIBRARIES_CFLAGS@
+INCLUDE_NEXT = @INCLUDE_NEXT@
+INCLUDE_NEXT_AS_FIRST_DIRECTIVE = @INCLUDE_NEXT_AS_FIRST_DIRECTIVE@
+INSTALL = @INSTALL@
+INSTALL_DATA = @INSTALL_DATA@
+INSTALL_PROGRAM = @INSTALL_PROGRAM@
+INSTALL_SCRIPT = @INSTALL_SCRIPT@
+INSTALL_STRIP_PROGRAM = @INSTALL_STRIP_PROGRAM@
+INT32_MAX_LT_INTMAX_MAX = @INT32_MAX_LT_INTMAX_MAX@
+INT64_MAX_EQ_LONG_MAX = @INT64_MAX_EQ_LONG_MAX@
+INTLLIBS = @INTLLIBS@
+INTL_MACOSX_LIBS = @INTL_MACOSX_LIBS@
+LD = @LD@
+LDFLAGS = @LDFLAGS@
+LEX = @LEX@
+LEXLIB = @LEXLIB@
+LEX_OUTPUT_ROOT = @LEX_OUTPUT_ROOT@
+LIBCOMPRESS = @LIBCOMPRESS@
+LIBICONV = @LIBICONV@
+LIBINTL = @LIBINTL@
+LIBMULTITHREAD = @LIBMULTITHREAD@
+LIBOBJS = @LIBOBJS@
+LIBPMULTITHREAD = @LIBPMULTITHREAD@
+LIBPTHREAD = @LIBPTHREAD@
+LIBS = @LIBS@
+LIBSOCKET = @LIBSOCKET@
+LIBSTDTHREAD = @LIBSTDTHREAD@
+LIBTHREAD = @LIBTHREAD@
+LIBTOOL = @LIBTOOL@
+LIB_CLOCK_GETTIME = @LIB_CLOCK_GETTIME@
+LIB_GETLOGIN = @LIB_GETLOGIN@
+LIB_HARD_LOCALE = @LIB_HARD_LOCALE@
+LIB_MBRTOWC = @LIB_MBRTOWC@
+LIB_NANOSLEEP = @LIB_NANOSLEEP@
+LIB_NL_LANGINFO = @LIB_NL_LANGINFO@
+LIB_SCHED_YIELD = @LIB_SCHED_YIELD@
+LIB_SELECT = @LIB_SELECT@
+LIB_SETLOCALE_NULL = @LIB_SETLOCALE_NULL@
+LIMITS_H = @LIMITS_H@
+LINGUAS = @LINGUAS@
+LIPO = @LIPO@
+LN_S = @LN_S@
+LOCALCHARSET_TESTS_ENVIRONMENT = @LOCALCHARSET_TESTS_ENVIRONMENT@
+LOCALE_FR = @LOCALE_FR@
+LOCALE_FR_UTF8 = @LOCALE_FR_UTF8@
+LOCALE_JA = @LOCALE_JA@
+LOCALE_ZH_CN = @LOCALE_ZH_CN@
+LTALLOCA = @LTALLOCA@
+LTLIBICONV = @LTLIBICONV@
+LTLIBINTL = @LTLIBINTL@
+LTLIBMULTITHREAD = @LTLIBMULTITHREAD@
+LTLIBOBJS = @LTLIBOBJS@
+LTLIBTHREAD = @LTLIBTHREAD@
+LT_SYS_LIBRARY_PATH = @LT_SYS_LIBRARY_PATH@
+MAINT = @MAINT@
+MAKEINFO = @MAKEINFO@
+MANDIR_LAYOUT = @MANDIR_LAYOUT@
+MANIFEST_TOOL = @MANIFEST_TOOL@
+MAN_SUBDIRS = @MAN_SUBDIRS@
+MKDIR_P = @MKDIR_P@
+MSGFMT = @MSGFMT@
+MSGFMT_015 = @MSGFMT_015@
+MSGMERGE = @MSGMERGE@
+NEXT_AS_FIRST_DIRECTIVE_CTYPE_H = @NEXT_AS_FIRST_DIRECTIVE_CTYPE_H@
+NEXT_AS_FIRST_DIRECTIVE_DIRENT_H = @NEXT_AS_FIRST_DIRECTIVE_DIRENT_H@
+NEXT_AS_FIRST_DIRECTIVE_ERRNO_H = @NEXT_AS_FIRST_DIRECTIVE_ERRNO_H@
+NEXT_AS_FIRST_DIRECTIVE_FCNTL_H = @NEXT_AS_FIRST_DIRECTIVE_FCNTL_H@
+NEXT_AS_FIRST_DIRECTIVE_FLOAT_H = @NEXT_AS_FIRST_DIRECTIVE_FLOAT_H@
+NEXT_AS_FIRST_DIRECTIVE_FNMATCH_H = @NEXT_AS_FIRST_DIRECTIVE_FNMATCH_H@
+NEXT_AS_FIRST_DIRECTIVE_GETOPT_H = @NEXT_AS_FIRST_DIRECTIVE_GETOPT_H@
+NEXT_AS_FIRST_DIRECTIVE_GLOB_H = @NEXT_AS_FIRST_DIRECTIVE_GLOB_H@
+NEXT_AS_FIRST_DIRECTIVE_INTTYPES_H = @NEXT_AS_FIRST_DIRECTIVE_INTTYPES_H@
+NEXT_AS_FIRST_DIRECTIVE_LANGINFO_H = @NEXT_AS_FIRST_DIRECTIVE_LANGINFO_H@
+NEXT_AS_FIRST_DIRECTIVE_LIMITS_H = @NEXT_AS_FIRST_DIRECTIVE_LIMITS_H@
+NEXT_AS_FIRST_DIRECTIVE_LOCALE_H = @NEXT_AS_FIRST_DIRECTIVE_LOCALE_H@
+NEXT_AS_FIRST_DIRECTIVE_SIGNAL_H = @NEXT_AS_FIRST_DIRECTIVE_SIGNAL_H@
+NEXT_AS_FIRST_DIRECTIVE_STDARG_H = @NEXT_AS_FIRST_DIRECTIVE_STDARG_H@
+NEXT_AS_FIRST_DIRECTIVE_STDDEF_H = @NEXT_AS_FIRST_DIRECTIVE_STDDEF_H@
+NEXT_AS_FIRST_DIRECTIVE_STDINT_H = @NEXT_AS_FIRST_DIRECTIVE_STDINT_H@
+NEXT_AS_FIRST_DIRECTIVE_STDIO_H = @NEXT_AS_FIRST_DIRECTIVE_STDIO_H@
+NEXT_AS_FIRST_DIRECTIVE_STDLIB_H = @NEXT_AS_FIRST_DIRECTIVE_STDLIB_H@
+NEXT_AS_FIRST_DIRECTIVE_STRINGS_H = @NEXT_AS_FIRST_DIRECTIVE_STRINGS_H@
+NEXT_AS_FIRST_DIRECTIVE_STRING_H = @NEXT_AS_FIRST_DIRECTIVE_STRING_H@
+NEXT_AS_FIRST_DIRECTIVE_SYSEXITS_H = @NEXT_AS_FIRST_DIRECTIVE_SYSEXITS_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_FILE_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_FILE_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_IOCTL_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_IOCTL_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_SELECT_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_SELECT_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_SOCKET_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_SOCKET_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_STAT_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_STAT_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_TIME_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_TIME_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_TYPES_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_TYPES_H@
+NEXT_AS_FIRST_DIRECTIVE_SYS_UIO_H = @NEXT_AS_FIRST_DIRECTIVE_SYS_UIO_H@
+NEXT_AS_FIRST_DIRECTIVE_TIME_H = @NEXT_AS_FIRST_DIRECTIVE_TIME_H@
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+dist_noinst_DATA = README
+AM_CFLAGS = $(WARN_CFLAGS)
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+	-I$(top_builddir)/include \
+	-I$(top_srcdir)/gl/lib \
+	-I$(top_builddir)/gl/lib \
+	-DLOCALEDIR=\"$(localedir)\" \
+	$(libpipeline_CFLAGS) \
+	$(libseccomp_CFLAGS)
+
+libman_la_SOURCES = \
+	appendstr.c \
+	cleanup.c \
+	cleanup.h \
+	debug.c \
+	encodings.c \
+	encodings.h \
+	glcontainers.c \
+	glcontainers.h \
+	linelength.c \
+	linelength.h \
+	orderfiles.c \
+	orderfiles.h \
+	pathsearch.c \
+	pathsearch.h \
+	sandbox.c \
+	sandbox.h \
+	security.c \
+	security.h \
+	tempfile.c \
+	util.c \
+	wordfnmatch.c \
+	wordfnmatch.h \
+	xregcomp.c \
+	xregcomp.h
+
+libman_la_LIBADD = ../gl/lib/libgnu.la $(LTLIBOBJS) \
+	@LTLIBINTL@
+
+libman_la_LDFLAGS = \
+	-avoid-version -release $(VERSION) -rpath $(pkglibdir) \
+	-no-undefined \
+	$(libpipeline_LIBS) \
+	$(libseccomp_LIBS)
+
+all: all-am
+
+.SUFFIXES:
+.SUFFIXES: .c .lo .o .obj
+$(srcdir)/Makefile.in: @MAINTAINER_MODE_TRUE@ $(srcdir)/Makefile.am  $(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) --foreign lib/Makefile'; \
+	$(am__cd) $(top_srcdir) && \
+	  $(AUTOMAKE) --foreign lib/Makefile
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
+	@case '$?' in \
+	  *config.status*) \
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+
+libman_la-wordfnmatch.lo: wordfnmatch.c
+@am__fastdepCC_TRUE@	$(AM_V_CC)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libman_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libman_la-wordfnmatch.lo -MD -MP -MF $(DEPDIR)/libman_la-wordfnmatch.Tpo -c -o libman_la-wordfnmatch.lo `test -f 'wordfnmatch.c' || echo '$(srcdir)/'`wordfnmatch.c
+@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/libman_la-wordfnmatch.Tpo $(DEPDIR)/libman_la-wordfnmatch.Plo
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='wordfnmatch.c' object='libman_la-wordfnmatch.lo' libtool=yes @AMDEPBACKSLASH@
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+
+libman_la-xregcomp.lo: xregcomp.c
+@am__fastdepCC_TRUE@	$(AM_V_CC)$(LIBTOOL) $(AM_V_lt) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libman_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libman_la-xregcomp.lo -MD -MP -MF $(DEPDIR)/libman_la-xregcomp.Tpo -c -o libman_la-xregcomp.lo `test -f 'xregcomp.c' || echo '$(srcdir)/'`xregcomp.c
+@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/libman_la-xregcomp.Tpo $(DEPDIR)/libman_la-xregcomp.Plo
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	$(AM_V_CC)source='xregcomp.c' object='libman_la-xregcomp.lo' libtool=yes @AMDEPBACKSLASH@
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+
+mostlyclean-libtool:
+	-rm -f *.lo
+
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+
+ID: $(am__tagged_files)
+	$(am__define_uniq_tagged_files); mkid -fID $$unique
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+
+tags-am: $(TAGS_DEPENDENCIES) $(am__tagged_files)
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+	here=`pwd`; \
+	$(am__define_uniq_tagged_files); \
+	shift; \
+	if test -z "$(ETAGS_ARGS)$$*$$unique"; then :; else \
+	  test -n "$$unique" || unique=$$empty_fix; \
+	  if test $$# -gt 0; then \
+	    $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
+	      "$$@" $$unique; \
+	  else \
+	    $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
+	      $$unique; \
+	  fi; \
+	fi
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+
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+ctags-am: $(TAGS_DEPENDENCIES) $(am__tagged_files)
+	$(am__define_uniq_tagged_files); \
+	test -z "$(CTAGS_ARGS)$$unique" \
+	  || $(CTAGS) $(CTAGSFLAGS) $(AM_CTAGSFLAGS) $(CTAGS_ARGS) \
+	     $$unique
+
+GTAGS:
+	here=`$(am__cd) $(top_builddir) && pwd` \
+	  && $(am__cd) $(top_srcdir) \
+	  && gtags -i $(GTAGS_ARGS) "$$here"
+cscopelist: cscopelist-am
+
+cscopelist-am: $(am__tagged_files)
+	list='$(am__tagged_files)'; \
+	case "$(srcdir)" in \
+	  [\\/]* | ?:[\\/]*) sdir="$(srcdir)" ;; \
+	  *) sdir=$(subdir)/$(srcdir) ;; \
+	esac; \
+	for i in $$list; do \
+	  if test -f "$$i"; then \
+	    echo "$(subdir)/$$i"; \
+	  else \
+	    echo "$$sdir/$$i"; \
+	  fi; \
+	done >> $(top_builddir)/cscope.files
+
+distclean-tags:
+	-rm -f TAGS ID GTAGS GRTAGS GSYMS GPATH tags
+
+distdir: $(BUILT_SOURCES)
+	$(MAKE) $(AM_MAKEFLAGS) distdir-am
+
+distdir-am: $(DISTFILES)
+	@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	list='$(DISTFILES)'; \
+	  dist_files=`for file in $$list; do echo $$file; done | \
+	  sed -e "s|^$$srcdirstrip/||;t" \
+	      -e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
+	case $$dist_files in \
+	  */*) $(MKDIR_P) `echo "$$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)/$$file"; then \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+	      cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+	  else \
+	    test -f "$(distdir)/$$file" \
+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
+	  fi; \
+	done
+check-am: all-am
+check: check-am
+all-am: Makefile $(LTLIBRARIES) $(DATA)
+installdirs:
+	for dir in "$(DESTDIR)$(pkglibdir)"; do \
+	  test -z "$$dir" || $(MKDIR_P) "$$dir"; \
+	done
+install: install-am
+install-exec: install-exec-am
+install-data: install-data-am
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+
+install-am: all-am
+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-am
+install-strip:
+	if test -z '$(STRIP)'; then \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
+	else \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+
+clean-generic:
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+clean: clean-am
+
+clean-am: clean-generic clean-libtool clean-pkglibLTLIBRARIES \
+	mostlyclean-am
+
+distclean: distclean-am
+		-rm -f ./$(DEPDIR)/libman_la-appendstr.Plo
+	-rm -f ./$(DEPDIR)/libman_la-cleanup.Plo
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+	-rm -f ./$(DEPDIR)/libman_la-encodings.Plo
+	-rm -f ./$(DEPDIR)/libman_la-glcontainers.Plo
+	-rm -f ./$(DEPDIR)/libman_la-linelength.Plo
+	-rm -f ./$(DEPDIR)/libman_la-orderfiles.Plo
+	-rm -f ./$(DEPDIR)/libman_la-pathsearch.Plo
+	-rm -f ./$(DEPDIR)/libman_la-sandbox.Plo
+	-rm -f ./$(DEPDIR)/libman_la-security.Plo
+	-rm -f ./$(DEPDIR)/libman_la-tempfile.Plo
+	-rm -f ./$(DEPDIR)/libman_la-util.Plo
+	-rm -f ./$(DEPDIR)/libman_la-wordfnmatch.Plo
+	-rm -f ./$(DEPDIR)/libman_la-xregcomp.Plo
+	-rm -f Makefile
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+	distclean-tags
+
+dvi: dvi-am
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+		-rm -f ./$(DEPDIR)/libman_la-appendstr.Plo
+	-rm -f ./$(DEPDIR)/libman_la-cleanup.Plo
+	-rm -f ./$(DEPDIR)/libman_la-debug.Plo
+	-rm -f ./$(DEPDIR)/libman_la-encodings.Plo
+	-rm -f ./$(DEPDIR)/libman_la-glcontainers.Plo
+	-rm -f ./$(DEPDIR)/libman_la-linelength.Plo
+	-rm -f ./$(DEPDIR)/libman_la-orderfiles.Plo
+	-rm -f ./$(DEPDIR)/libman_la-pathsearch.Plo
+	-rm -f ./$(DEPDIR)/libman_la-sandbox.Plo
+	-rm -f ./$(DEPDIR)/libman_la-security.Plo
+	-rm -f ./$(DEPDIR)/libman_la-tempfile.Plo
+	-rm -f ./$(DEPDIR)/libman_la-util.Plo
+	-rm -f ./$(DEPDIR)/libman_la-wordfnmatch.Plo
+	-rm -f ./$(DEPDIR)/libman_la-xregcomp.Plo
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
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+	mostlyclean-libtool
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+.MAKE: install-am install-strip
+
+.PHONY: CTAGS GTAGS TAGS all all-am am--depfiles check check-am clean \
+	clean-generic clean-libtool clean-pkglibLTLIBRARIES \
+	cscopelist-am ctags ctags-am distclean distclean-compile \
+	distclean-generic distclean-libtool distclean-tags distdir dvi \
+	dvi-am html html-am info info-am install install-am \
+	install-data install-data-am install-dvi install-dvi-am \
+	install-exec install-exec-am install-html install-html-am \
+	install-info install-info-am install-man install-pdf \
+	install-pdf-am install-pkglibLTLIBRARIES install-ps \
+	install-ps-am install-strip installcheck installcheck-am \
+	installdirs maintainer-clean maintainer-clean-generic \
+	mostlyclean mostlyclean-compile mostlyclean-generic \
+	mostlyclean-libtool pdf pdf-am ps ps-am tags tags-am uninstall \
+	uninstall-am uninstall-pkglibLTLIBRARIES
+
+.PRECIOUS: Makefile
+
+
+# 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/lib/README b/lib/README
new file mode 100644
index 0000000..884b433
--- /dev/null
+++ b/lib/README
@@ -0,0 +1,21 @@
+These library source files have various authors but are all covered by
+either the GNU General Public License or the GNU Lesser General Public
+License, and are freely distributable under their terms and conditions.
+
+See the files ../docs/COPYING and ../docs/COPYING.LIB for relevant
+information.
+
+appendstr.c			author - Markus Armbruster
+cleanup.*			author - Markus Armbruster, Colin Watson
+debug.c				author - Colin Watson
+encodings.*			author - Colin Watson
+glcontainers.*			author - Colin Watson
+linelength.*			author - Martin Schulze, Jon Tombs, Colin Watson
+orderfiles.*			author - Colin Watson
+pathsearch.*			author - Colin Watson
+sandbox.*			author - Colin Watson
+security.*			author - John W. Eaton, Wilf., Colin Watson
+tempfile.c			author - Colin Watson
+util.c				author - John W. Eaton, Wilf., Colin Watson
+wordfnmatch.*			author - Colin Watson
+xregcomp.*			author - Colin Watson
diff --git a/lib/appendstr.c b/lib/appendstr.c
new file mode 100644
index 0000000..ef07ce8
--- /dev/null
+++ b/lib/appendstr.c
@@ -0,0 +1,55 @@
+/* appendstr.c -- append to a dynamically allocated string
+   Copyright (C) 1994 Markus Armbruster
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Library Public License
+   as published by the Free Software Foundation; either version 2, 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; see the file COPYING.LIB.  If not, write
+   to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA
+   02139, USA.  */
+
+#ifdef HAVE_CONFIG_H
+#  include "config.h"
+#endif /* HAVE_CONFIG_H */
+
+#include <string.h>
+#include <stdarg.h>
+
+#include "manconfig.h"
+
+/* append strings to first argument, which is realloced to the correct size 
+   first arg may be NULL */
+char *appendstr (char *str, ...)
+{
+      va_list ap;
+      size_t len, newlen;
+      char *next, *end;
+
+      len = str ? strlen (str) : 0;
+
+      va_start (ap, str);
+      newlen = len + 1;
+      while ((next = va_arg (ap, char *)))
+              newlen += strlen (next);
+      va_end (ap);
+
+      str = xrealloc (str, newlen);
+      end = str + len;
+
+      va_start (ap, str);
+      while ((next = va_arg (ap, char *))) {
+              strcpy (end, next);
+              end += strlen (next);
+      }
+      va_end (ap);
+
+      return str;
+}
diff --git a/lib/cleanup.c b/lib/cleanup.c
new file mode 100644
index 0000000..cf8aec1
--- /dev/null
+++ b/lib/cleanup.c
@@ -0,0 +1,266 @@
+/*
+ * cleanup.c -- simple dynamic cleanup function management
+ * Copyright (C) 1995 Markus Armbruster.
+ * Copyright (C) 2007 Colin Watson.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; see the file COPYING.LIB.  If not,
+ * write to the Free Software Foundation, Inc., 51 Franklin St, Fifth
+ * Floor, Boston, MA  02110-1301  USA.
+*/
+
+#ifdef HAVE_CONFIG_H
+#  include "config.h"
+#endif /* HAVE_CONFIG_H */
+
+#include <stdlib.h>
+#include <stdio.h>		/* SunOS's loosing assert.h needs it */
+#include <assert.h>
+#include <signal.h>
+#include <unistd.h>
+#include <string.h>
+
+#include "manconfig.h"		/* for FATAL */
+#include "cleanup.h"
+
+
+
+/* Dealing with signals */
+
+
+/* saved signal actions */
+static struct sigaction saved_hup_action;
+static struct sigaction saved_int_action;
+static struct sigaction saved_term_action;
+
+
+/* Run cleanups, then reraise signal with default handler. */
+static _Noreturn void
+sighandler (int signo)
+{
+  struct sigaction act;
+  sigset_t set;
+
+  do_cleanups_sigsafe (1);
+
+  /* set default signal action */
+  memset (&act, 0, sizeof act);
+  act.sa_handler = SIG_DFL;
+  sigemptyset (&act.sa_mask);
+  act.sa_flags = 0;
+  if (sigaction (signo, &act, NULL)) {
+    /* should not happen */
+    _exit (FATAL);		/* exit() is taboo from signal handlers! */
+  }
+
+  /* unmask signo */
+  if (   sigemptyset (&set)
+      || sigaddset (&set, signo)
+      || sigprocmask (SIG_UNBLOCK, &set, NULL)) {
+    /* shouldn't happen */
+    _exit (FATAL);		/* exit() is taboo from signal handlers! */
+  }
+
+  /* signal has now default action and is unmasked,
+     reraise it to terminate program abnormally */
+  kill (getpid(), signo);
+  abort();
+}
+
+
+/* Save signo's current action to oldact, if its handler is SIG_DFL
+   install sighandler, return 0 on success, -1 on failure. */
+static int
+trap_signal (int signo, struct sigaction *oldact)
+{
+  if (sigaction (signo, NULL, oldact)) {
+    return -1;
+  }
+
+  if (oldact->sa_handler == SIG_DFL) {
+    struct sigaction act;
+
+    memset (&act, 0, sizeof act);
+    act.sa_handler = sighandler;
+    sigemptyset (&act.sa_mask);
+    act.sa_flags = 0;
+    return sigaction (signo, &act, oldact);
+  }
+
+  return 0;
+}
+
+
+/* Trap some abnormal exits to call do_cleanups(). */
+static int
+trap_abnormal_exits (void)
+{
+  if (   trap_signal (SIGHUP, &saved_hup_action)
+      || trap_signal (SIGINT, &saved_int_action)
+      || trap_signal (SIGTERM, &saved_term_action))
+    return -1;
+  return 0;
+}
+
+
+/* Restore signo's action from oldact if its current handler is
+   sighandler, return 0 on success, -1 on failure. */
+static int
+untrap_signal (int signo, struct sigaction *oldact)
+{
+  struct sigaction act;
+  if (sigaction (signo, NULL, &act)) {
+    return -1;
+  }
+
+  if (act.sa_handler == sighandler) {
+    return sigaction (signo, oldact, NULL);
+  }
+
+  return 0;
+}
+
+
+/* Undo a previous trap_abnormal_exits(). */
+static int
+untrap_abnormal_exits (void)
+{
+  if (  untrap_signal (SIGHUP, &saved_hup_action)
+      | untrap_signal (SIGINT, &saved_int_action)
+      | untrap_signal (SIGTERM, &saved_term_action))
+    return -1;
+  return 0;
+}
+
+
+
+typedef struct {
+  cleanup_fun fun;
+  void *arg;
+  int sigsafe;
+} slot;
+
+static slot *stack = NULL;	/* stack of cleanup functions */
+static unsigned nslots = 0;	/* #slots in stack */
+static unsigned tos = 0;	/* top of stack, 0 <= tos <= nslots */
+
+/* Call cleanup functions in stack from from top to bottom,
+ * Automatically called on program termination via exit(3) or default
+ * action for SIGHUP, SIGINT or SIGTERM.
+ * Since this may be called from a signal handler, do not use free().
+ * If in_sighandler is true, cleanup functions with sigsafe=0 will not be
+ * called.
+ */
+void
+do_cleanups_sigsafe (int in_sighandler)
+{
+  unsigned i;
+
+  assert (tos <= nslots);
+  for (i = tos; i > 0; --i)
+    if (!in_sighandler || stack[i-1].sigsafe)
+      stack[i-1].fun (stack[i-1].arg);
+}
+
+/* Call cleanup functions in stack from from top to bottom,
+ * Automatically called on program termination via exit(3).
+ */
+void
+do_cleanups (void)
+{
+  do_cleanups_sigsafe (0);
+  tos = 0;
+  nslots = 0;
+  free (stack);
+  stack = NULL;
+}
+
+
+/* Push a cleanup function on the cleanup stack,
+ * return 0 on success, -1 on failure.
+ * Caution: the cleanup function may be called from signal handlers if
+ * sigsafe=1. If you just want a convenient atexit() wrapper, pass
+ * sigsafe=0.
+ */
+int
+push_cleanup (cleanup_fun fun, void *arg, int sigsafe)
+{
+  static int handler_installed = 0;
+
+  assert (tos <= nslots);
+
+  if (!handler_installed) {
+    if (atexit (do_cleanups))
+      return -1;
+    handler_installed = 1;
+  }
+
+  if (tos == nslots) {
+    /* stack is full, allocate another slot */
+    /* stack is not expected to grow much, otherwise we would double it */
+    slot *new_stack;
+
+    if (stack) {
+      new_stack = xnrealloc (stack, nslots+1, sizeof (slot));
+    } else {
+      new_stack = xnmalloc (nslots+1, sizeof (slot));
+    }
+      
+    if (!new_stack) return -1;
+    stack = new_stack;
+    ++nslots;
+  }
+
+  assert (tos < nslots);
+  stack[tos].fun = fun;
+  stack[tos].arg = arg;
+  stack[tos].sigsafe = sigsafe;
+  ++tos;
+
+
+  trap_abnormal_exits();
+
+  return 0;
+}
+
+
+/* Remove topmost cleanup function from the cleanup stack that matches the
+ * given values.
+ */
+void
+pop_cleanup (cleanup_fun fun, void *arg)
+{
+  unsigned i, j;
+
+  assert (tos > 0);
+
+  for (i = tos; i > 0; --i) {
+    if (stack[i-1].fun == fun && stack[i-1].arg == arg) {
+      for (j = i; j < tos; ++j)
+        stack[j-1] = stack[j];
+      --tos;
+      break;
+    }
+  }
+
+  if (tos == 0) untrap_abnormal_exits();
+}
+
+
+/* Pop all cleanup functions from the cleanup stack. */
+void
+pop_all_cleanups (void)
+{
+  tos = 0;
+  untrap_abnormal_exits();
+}
diff --git a/lib/cleanup.h b/lib/cleanup.h
new file mode 100644
index 0000000..555900d
--- /dev/null
+++ b/lib/cleanup.h
@@ -0,0 +1,33 @@
+/*
+ * cleanup.h -- simple dynamic cleanup function management
+ * Copyright (C) 1995 Markus Armbruster.
+ * Copyright (C) 2007 Colin Watson.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; see the file COPYING.LIB.  If not,
+ * write to the Free Software Foundation, Inc., 51 Franklin St, Fifth
+ * Floor, Boston, MA  02110-1301  USA.
+ */
+
+#ifndef _CLEANUP_H
+#define _CLEANUP_H
+
+typedef void (*cleanup_fun) (void *);
+
+extern void do_cleanups_sigsafe (int);
+extern void do_cleanups (void);
+extern int push_cleanup (cleanup_fun, void *, int);
+extern void pop_cleanup (cleanup_fun, void *);
+extern void pop_all_cleanups (void);
+
+#endif /* _CLEANUP_H */
diff --git a/lib/debug.c b/lib/debug.c
new file mode 100644
index 0000000..53cefe9
--- /dev/null
+++ b/lib/debug.c
@@ -0,0 +1,73 @@
+/*
+ * debug.c: debugging messages
+ * Copyright (C) 2007 Colin Watson.
+ *
+ * This file is part of man-db.
+ *
+ * man-db 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * man-db 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 man-db; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#ifdef HAVE_CONFIG_H
+#  include "config.h"
+#endif
+
+#include <stdbool.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdarg.h>
+#include <string.h>
+#include <errno.h>
+
+#include "manconfig.h"
+
+bool debug_level = false;
+
+void init_debug (void)
+{
+	const char *man_debug = getenv ("MAN_DEBUG");
+	if (man_debug && STREQ (man_debug, "1"))
+		debug_level = true;
+}
+
+static void ATTRIBUTE_FORMAT_PRINTF (1, 0) vdebug (const char *message,
+						   va_list args)
+{
+	if (debug_level)
+		vfprintf (stderr, message, args);
+}
+
+void debug (const char *message, ...)
+{
+	if (debug_level) {
+		va_list args;
+
+		va_start (args, message);
+		vdebug (message, args);
+		va_end (args);
+	}
+}
+
+void debug_error (const char *message, ...)
+{
+	if (debug_level) {
+		va_list args;
+
+		va_start (args, message);
+		vdebug (message, args);
+		va_end (args);
+
+		debug (": %s\n", strerror (errno));
+	}
+}
diff --git a/lib/encodings.c b/lib/encodings.c
new file mode 100644
index 0000000..e8ad338
--- /dev/null
+++ b/lib/encodings.c
@@ -0,0 +1,933 @@
+/*
+ * encodings.c: locale and encoding handling for man
+ *
+ * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
+ *               Colin Watson.
+ *
+ * This file is part of man-db.
+ *
+ * man-db 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * man-db 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 man-db; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#ifdef HAVE_CONFIG_H
+#  include "config.h"
+#endif /* HAVE_CONFIG_H */
+
+#include <stdbool.h>
+#include <string.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <assert.h>
+
+#include "gettext.h"
+#include "localcharset.h"
+#include <locale.h>
+#include <ctype.h>
+
+#include "manconfig.h"
+
+#include "pathsearch.h"
+#include "pipeline.h"
+
+#include "encodings.h"
+
+
+/* Due to historical limitations in groff (which may be removed in the
+ * future), there is no mechanism for a man page to specify its own
+ * encoding. This means that each national language directory needs to carry
+ * with it information about its encoding, and each groff device needs to
+ * have a default encoding associated with it. Out of the box, groff
+ * formally allows only ISO-8859-1 on input; however, patches originating
+ * with Debian and imported by many other GNU/Linux distributions change
+ * this somewhat.
+ *
+ * Eventually, groff will support proper Unicode input, and much of this
+ * horror can go away.
+ *
+ * Do *not* confuse source encoding with groff encoding. The encoding
+ * specified in this table is the encoding in which the source man pages in
+ * each language directory are expected to be written. The groff encoding is
+ * determined by the selected groff device and sometimes also by the user's
+ * locale.
+ *
+ * The standard output encoding is the encoding assumed for cat pages for
+ * each language directory. It must *not* be used to discover the actual
+ * output encoding displayed to the user; that is determined by the locale.
+ * TODO: it would be useful to be able to change the standard output
+ * encoding in the configuration file.
+ *
+ * This table is expected to change over time, particularly as man pages
+ * begin to move towards UTF-8. Feel free to patch this for your
+ * distribution; send me updates for languages I've missed.
+ *
+ * Explicit encodings in the directory name (e.g. de_DE.UTF-8) override this
+ * table.
+ */
+struct directory_entry {
+	const char *lang_dir;
+	const char *source_encoding;
+};
+
+static struct directory_entry directory_table[] = {
+	{ "C",		"ISO-8859-1"	}, /* English */
+	{ "POSIX",	"ISO-8859-1"	}, /* English */
+	{ "da",		"ISO-8859-1"	}, /* Danish */
+	{ "de",		"ISO-8859-1"	}, /* German */
+	{ "en",		"ISO-8859-1"	}, /* English */
+	{ "es",		"ISO-8859-1"	}, /* Spanish */
+	{ "et",		"ISO-8859-1"	}, /* Estonian */
+	{ "fi",		"ISO-8859-1"	}, /* Finnish */
+	{ "fr",		"ISO-8859-1"	}, /* French */
+	{ "ga",		"ISO-8859-1"	}, /* Irish */
+	{ "gl",		"ISO-8859-1"	}, /* Galician */
+	{ "id",		"ISO-8859-1"	}, /* Indonesian */
+	{ "is",		"ISO-8859-1"	}, /* Icelandic */
+	{ "it",		"ISO-8859-1"	}, /* Italian */
+	{ "nb",		"ISO-8859-1"	}, /* Norwegian Bokmål */
+	{ "nl",		"ISO-8859-1"	}, /* Dutch */
+	{ "nn",		"ISO-8859-1"	}, /* Norwegian Nynorsk */
+	{ "no",		"ISO-8859-1"	}, /* Norwegian */
+	{ "pt",		"ISO-8859-1"	}, /* Portuguese */
+	{ "sv",		"ISO-8859-1"	}, /* Swedish */
+
+#ifdef MULTIBYTE_GROFF
+	/* These languages require a patched version of groff with the
+	 * ascii8 and nippon devices.
+	 */
+	{ "be",		"CP1251"	}, /* Belarusian */
+	{ "bg",		"CP1251"	}, /* Bulgarian */
+	{ "cs",		"ISO-8859-2"	}, /* Czech */
+	{ "el",		"ISO-8859-7"	}, /* Greek */
+	{ "hr",		"ISO-8859-2"	}, /* Croatian */
+	{ "hu",		"ISO-8859-2"	}, /* Hungarian */
+	{ "ja",		"EUC-JP"	}, /* Japanese */
+	{ "ko",		"EUC-KR"	}, /* Korean */
+	{ "lt",		"ISO-8859-13"	}, /* Lithuanian */
+	{ "lv",		"ISO-8859-13"	}, /* Latvian */
+	{ "mk",		"ISO-8859-5"	}, /* Macedonian */
+	{ "pl",		"ISO-8859-2"	}, /* Polish */
+	{ "ro",		"ISO-8859-2"	}, /* Romanian */
+	{ "ru",		"KOI8-R"	}, /* Russian */
+	{ "sk",		"ISO-8859-2"	}, /* Slovak */
+	{ "sl",		"ISO-8859-2"	}, /* Slovenian */
+	/* sr@latin must precede sr, due to top-down left-substring matching later */
+	{ "sr@latin",	"ISO-8859-2"	}, /* Serbian Latin */
+	{ "sr",		"ISO-8859-5"	}, /* Serbian */
+	{ "tr",		"ISO-8859-9"	}, /* Turkish */
+	{ "uk",		"KOI8-U"	}, /* Ukrainian */
+	{ "vi",		"TCVN5712-1"	}, /* Vietnamese */
+	{ "zh_CN",	"GBK"		}, /* Simplified Chinese */
+	{ "zh_SG",	"GBK"		}, /* Simplified Chinese, Singapore */
+	{ "zh_HK",	"BIG5HKSCS"	}, /* Traditional Chinese, Hong Kong */
+	{ "zh_TW",	"BIG5"		}, /* Traditional Chinese */
+#endif /* MULTIBYTE_GROFF */
+
+	{ NULL,		NULL		}
+};
+
+static const char fallback_source_encoding[] = "ISO-8859-1";
+
+/* Unfortunately, there is no portable way to inspect iconv's internal table
+ * of character set aliases. We copy the most interesting ones here so that
+ * we can deal with them if they appear in directory names. Note that all
+ * names will be converted to upper case before looking them up in this
+ * table.
+ */
+struct charset_alias_entry {
+	const char *alias;
+	const char *canonical_name;
+};
+
+static struct charset_alias_entry charset_alias_table[] = {
+	/* The FHS is silly and requires numeric-only aliases that iconv
+	 * does not support.
+	 */
+	{ "88591",		"ISO-8859-1"		},
+	{ "88592",		"ISO-8859-2"		},
+	{ "88593",		"ISO-8859-3"		},
+	{ "88594",		"ISO-8859-4"		},
+	{ "88595",		"ISO-8859-5"		},
+	{ "88596",		"ISO-8859-6"		},
+	{ "88597",		"ISO-8859-7"		},
+	{ "88598",		"ISO-8859-8"		},
+	{ "88599",		"ISO-8859-9"		},
+	{ "885910",		"ISO-8859-10"		},
+	{ "885911",		"ISO-8859-11"		},
+	{ "885913",		"ISO-8859-13"		},
+	{ "885914",		"ISO-8859-14"		},
+	{ "885915",		"ISO-8859-15"		},
+	{ "885916",		"ISO-8859-16"		},
+
+	{ "ASCII",		"ANSI_X3.4-1968"	},
+	{ "BIG-5",		"BIG5"			},
+	{ "BIG5-HKSCS",		"BIG5HKSCS"		},
+	{ "EUCCN",		"EUC-CN"		},
+	{ "EUCJP",		"EUC-JP"		},
+	{ "EUCKR",		"EUC-KR"		},
+	{ "EUCTW",		"EUC-TW"		},
+	{ "GB2312",		"EUC-CN"		},
+	{ "ISO8859-1",		"ISO-8859-1"		},
+	{ "ISO8859-2",		"ISO-8859-2"		},
+	{ "ISO8859-3",		"ISO-8859-3"		},
+	{ "ISO8859-4",		"ISO-8859-4"		},
+	{ "ISO8859-5",		"ISO-8859-5"		},
+	{ "ISO8859-6",		"ISO-8859-6"		},
+	{ "ISO8859-7",		"ISO-8859-7"		},
+	{ "ISO8859-8",		"ISO-8859-8"		},
+	{ "ISO8859-9",		"ISO-8859-9"		},
+	{ "ISO8859-10",		"ISO-8859-10"		},
+	{ "ISO8859-11",		"ISO-8859-11"		},
+	{ "ISO8859-13",		"ISO-8859-13"		},
+	{ "ISO8859-14",		"ISO-8859-14"		},
+	{ "ISO8859-15",		"ISO-8859-15"		},
+	{ "ISO8859-16",		"ISO-8859-16"		},
+	{ "KOI8R",		"KOI8-R"		},
+	{ "KOI8U",		"KOI8-U"		},
+	{ "UJIS",		"EUC-JP"		},
+	{ "US-ASCII",		"ANSI_X3.4-1968"	},
+	{ "UTF8",		"UTF-8"			},
+
+	{ NULL,			NULL			}
+};
+
+/* The default groff terminal output device to be used is determined based
+ * on locale_charset (), which returns the character set used by the current
+ * locale.
+ */
+struct charset_entry {
+	const char *charset_from_locale;
+	const char *default_device;
+};
+
+static struct charset_entry charset_table[] = {
+	{ "ANSI_X3.4-1968",	"ascii"		},
+#ifndef HEIRLOOM_NROFF
+	{ "ISO-8859-1",		"latin1"	},
+#endif /* HEIRLOOM_NROFF */
+	{ "UTF-8",		"utf8"		},
+
+#ifndef HEIRLOOM_NROFF
+# ifdef MULTIBYTE_GROFF
+	{ "BIG5",		"nippon"	},
+	{ "BIG5HKSCS",		"nippon"	},
+	{ "EUC-CN",		"nippon"	},
+	{ "EUC-JP",		"nippon"	},
+	{ "EUC-TW",		"nippon"	},
+	{ "GBK",		"nippon"	},
+# else /* !MULTIBYTE_GROFF */
+	/* If we have a smarter version of groff, this is better dealt with
+	 * using either ascii8 (Debian multibyte patch) or preconv (as of
+	 * groff 1.20). This is a not-quite-right stopgap in case we have
+	 * neither.
+	 */
+	{ "ISO-8859-15",    	"latin1"	},
+# endif /* MULTIBYTE_GROFF */
+#endif /* HEIRLOOM_NROFF */
+
+	{ NULL,			NULL		}
+};
+
+static const char *fallback_default_device =
+#ifdef MULTIBYTE_GROFF
+	"ascii8"
+#else /* !MULTIBYTE_GROFF */
+	"ascii"
+#endif /* MULTIBYTE_GROFF */
+	;
+
+/* The encoding used for the text passed to groff is a function of the
+ * selected groff device. Traditional devices expect ISO-8859-1 on input
+ * (yes, even the utf8 device); devices added in the Debian multibyte patch
+ * expect other encodings. The ascii8 device passes top-bit-set characters
+ * straight through so is (probably ...) encoding-agnostic. If this encoding
+ * does not match the source encoding, an iconv pipe is used (if available)
+ * to perform recoding.
+ */
+struct device_entry {
+	const char *roff_device;
+	const char *roff_encoding;
+	const char *output_encoding;
+};
+
+static struct device_entry device_table[] = {
+	/* nroff devices */
+	{ "ascii",	"ANSI_X3.4-1968",	"ANSI_X3.4-1968"	},
+	{ "latin1",	"ISO-8859-1",		"ISO-8859-1"		},
+	{ "utf8",	"ISO-8859-1",		"UTF-8"			},
+
+#ifdef MULTIBYTE_GROFF
+	{ "ascii8",	NULL,			NULL			},
+	{ "nippon",	NULL,			NULL			},
+#endif /* MULTIBYTE_GROFF */
+
+#ifdef HEIRLOOM_NROFF
+	/* Not strictly accurate, but we only use this in UTF-8 locales. */
+	{ "locale",	"UTF-8",		"UTF-8"			},
+#endif /* HEIRLOOM_NROFF */
+
+	/* troff devices */
+	{ "X75",	NULL,			NULL			},
+	{ "X75-12",	NULL,			NULL			},
+	{ "X100",	NULL,			NULL			},
+	{ "X100-12",	NULL,			NULL			},
+	{ "dvi",	NULL,			NULL			},
+	{ "html",	NULL,			NULL			},
+	{ "lbp",	NULL,			NULL			},
+	{ "lj4",	NULL,			NULL			},
+	{ "ps",		NULL,			NULL			},
+
+	{ NULL,		NULL,			NULL			}
+};
+
+static const char fallback_roff_encoding[] = "ISO-8859-1";
+
+/* Setting less_charset to iso8859 tells the less pager that characters
+ * between 0xA0 and 0xFF are displayable, not that its input is encoded in
+ * ISO-8859-*. TODO: Perhaps using LESSCHARDEF would be better.
+ *
+ * Character set names compatible only with jless go in jless_charset.
+ */
+struct less_charset_entry {
+	const char *charset_from_locale;
+	const char *less_charset;
+	const char *jless_charset;
+};
+
+static struct less_charset_entry less_charset_table[] = {
+	{ "ANSI_X3.4-1968",	"ascii",	NULL		},
+	{ "ISO-8859-1",		"iso8859",	NULL		},
+	{ "UTF-8",		"utf-8",	NULL		},
+
+#ifdef MULTIBYTE_GROFF
+	{ "CP1251",		"windows",	NULL		},
+	{ "EUC-JP",		"iso8859",	"japanese-ujis"	},
+	{ "KOI8-R",		"koi8-r",	NULL		},
+	/* close enough? */
+	{ "KOI8-U",		"koi8-r",	NULL		},
+#endif /* MULTIBYTE_GROFF */
+
+	{ NULL,			NULL,		NULL		}
+};
+
+static const char fallback_less_charset[] = "iso8859";
+
+/* Encoding conversions from groff-1.20/src/preproc/preconv/preconv.cpp.
+ * I've only included those not already recognised by GNU libiconv.
+ */
+struct conversion_entry {
+	const char *from;
+	const char *to;
+};
+
+static struct conversion_entry conversion_table[] = {
+	{ "chinese-big5",			"Big5" },
+	{ "chinese-euc",			"GB2312" },
+	{ "chinese-iso-8bit",			"GB2312" },
+	{ "cn-gb-2312",				"GB2312" },
+	{ "cp878",				"KOI8-R" },
+	{ "cyrillic-iso-8bit",			"ISO-8859-5" },
+	{ "cyrillic-koi8",			"KOI8-R" },
+	{ "euc-china",				"GB2312" },
+	{ "euc-japan",				"EUC-JP" },
+	{ "euc-japan-1990",			"EUC-JP" },
+	{ "euc-kr",				"EUC-KR" },
+	{ "greek-iso-8bit",			"ISO-8859-7" },
+	{ "iso-latin-1",			"ISO-8859-1" },
+	{ "iso-latin-2",			"ISO-8859-2" },
+	{ "iso-latin-5",			"ISO-8859-9" },
+	{ "iso-latin-7",			"ISO-8859-13" },
+	{ "iso-latin-9",			"ISO-8859-15" },
+	{ "japanese-iso-8bit",			"EUC-JP" },
+	{ "japanese-euc",			"EUC-JP" },
+	{ "jis8",				"EUC-JP" },
+	{ "korean-euc",				"EUC-KR" },
+	{ "korean-iso-8bit",			"EUC-KR" },
+	{ "latin-0",				"ISO-8859-15" },
+	{ "latin-1",				"ISO-8859-1" },
+	{ "latin-2",				"ISO-8859-2" },
+	{ "latin-5",				"ISO-8859-9" },
+	{ "latin-7",				"ISO-8859-13" },
+	{ "mule-utf-16",			"UTF-16" },
+	{ "mule-utf-16be",			"UTF-16BE" },
+	{ "mule-utf-16-be",			"UTF-16BE" },
+	{ "mule-utf-16be-with-signature",	"UTF-16" },
+	{ "mule-utf-16le",			"UTF-16LE" },
+	{ "mule-utf-16-le",			"UTF-16LE" },
+	{ "mule-utf-16le-with-signature",	"UTF-16" },
+	{ "mule-utf-8",				"UTF-8" },
+	{ "utf-16-be",				"UTF-16BE" },
+	{ "utf-16be-with-signature",		"UTF-16" },
+	{ "utf-16-be-with-signature",		"UTF-16" },
+	{ "utf-16-le",				"UTF-16LE" },
+	{ "utf-16le-with-signature",		"UTF-16" },
+	{ "utf-16-le-with-signature",		"UTF-16" },
+	{ NULL,					NULL }
+};
+
+const char *groff_preconv = NULL;
+
+/* Is the groff "preconv" helper available? If so, return its name.
+ * Otherwise, return NULL.
+ */
+const char *get_groff_preconv (void)
+{
+	if (groff_preconv) {
+		if (*groff_preconv)
+			return groff_preconv;
+		else
+			return NULL;
+	}
+
+	if (pathsearch_executable ("gpreconv"))
+		groff_preconv = "gpreconv";
+	else if (pathsearch_executable ("preconv"))
+		groff_preconv = "preconv";
+	else
+		groff_preconv = "";
+
+	if (*groff_preconv)
+		return groff_preconv;
+	else
+		return NULL;
+}
+
+/* Return the assumed encoding of the source man page, based on the
+ * directory in which it was found. The caller should attempt to recode from
+ * this to whatever encoding is expected by groff.
+ *
+ * The caller should free the returned string when it is finished with it.
+ */
+char * _GL_ATTRIBUTE_MALLOC get_page_encoding (const char *lang)
+{
+	const struct directory_entry *entry;
+	const char *dot;
+
+	if (!lang || !*lang) {
+		/* Guess based on the locale. */
+		lang = setlocale (LC_MESSAGES, NULL);
+		if (!lang)
+			return xstrdup (fallback_source_encoding);
+	}
+
+	dot = strchr (lang, '.');
+	if (dot) {
+		/* The FHS has the worst specification of what's supposed to
+		 * go after the dot here that I've ever seen. To quote from
+		 * version 2.1:
+		 *
+		 * "It is recommended that this be a numeric representation
+		 * if possible (ISO standards, especially), not include
+		 * additional punctuation symbols, and that any letters be
+		 * in lowercase."
+		 *
+		 * Any sane standard would use directory names like
+		 * de_DE.ISO-8859-1; the examples in the FHS recommend
+		 * de_DE.88591 instead. Considering that there is no other
+		 * conceivable use for encodings in directory names other
+		 * than to pass them to iconv or similar, this is quite
+		 * startlingly useless.
+		 *
+		 * While we now support this thanks to
+		 * get_canonical_charset_name, the FHS specification is
+		 * obviously wrong and I plan to petition to have it
+		 * changed. I recommend ignoring this part of the FHS.
+		 */
+		char *dir_encoding =
+			xstrndup (dot + 1, strcspn (dot + 1, ",@"));
+		char *canonical_dir_encoding =
+			xstrdup (get_canonical_charset_name (dir_encoding));
+		free (dir_encoding);
+		return canonical_dir_encoding;
+	}
+
+	for (entry = directory_table; entry->lang_dir; ++entry)
+		if (STRNEQ (entry->lang_dir, lang, strlen (entry->lang_dir)))
+			return xstrdup (entry->source_encoding);
+
+	return xstrdup (fallback_source_encoding);
+}
+
+/* Return the canonical encoding for source man pages in the specified
+ * language. This ignores any encoding specification in the language
+ * directory name. The source encoding should be used as a basis for
+ * determining the correct roff device to use: that is, the caller should
+ * behave as if it is recoding from the page encoding to the source encoding
+ * first, although in practice it should recode directly from the page
+ * encoding to the roff encoding.
+ *
+ * You should normally only call this function if the page encoding is
+ * UTF-8, in which case older versions of groff that lack preconv need to
+ * have the page recoded to some legacy encoding). If the page is in a
+ * legacy encoding, then attempting to recode from that to some other legacy
+ * encoding will probably do more harm than good.
+ *
+ * Here are a few concrete examples of why these distinctions are important:
+ *
+ *   /usr/share/man/en_GB.UTF-8, locale C
+ *     page encoding = UTF-8
+ *     source encoding = ISO-8859-1
+ *     roff encoding = ISO-8859-1
+ *     output encoding = UTF-8
+ *     UTF-8 -> iconv -> ISO-8859-1 -> groff -Tascii -> ANSI_X3.4-1968
+ *
+ *   /usr/share/man/pl_PL.UTF-8, locale pl_PL.UTF-8
+ *     page encoding = UTF-8
+ *     source encoding = ISO-8859-2
+ *     roff encoding = ISO-8859-2
+ *     output encoding = ISO-8859-2
+ *     UTF-8 -> iconv -> ISO-8859-2 -> groff -Tascii8
+ *                    -> ISO-8859-2 -> iconv -> UTF-8
+ *
+ *   /usr/share/man/ja_JP.EUC-JP, locale ja_JP.UTF-8
+ *     page encoding = EUC-JP
+ *     source encoding = EUC-JP
+ *     roff encoding = UTF-8
+ *     output encoding = UTF-8
+ *     EUC-JP -> iconv -> UTF-8 -> groff -Tutf8 -> UTF-8
+ *
+ *   /usr/share/man/en_GB.ISO-8859-15, locale en_GB.UTF-8
+ *     page encoding = ISO-8859-15
+ *     source encoding = ISO-8859-15
+ *     roff encoding = ISO-8859-15
+ *     output encoding = ISO-8859-15
+ *     ISO-8859-15 -> groff -Tascii8 -> ISO-8859-15 -> iconv -> UTF-8
+ */
+const char *get_source_encoding (const char *lang)
+{
+	const struct directory_entry *entry;
+
+	if (!lang || !*lang) {
+		/* Guess based on the locale. */
+		lang = setlocale (LC_MESSAGES, NULL);
+		if (!lang)
+			return fallback_source_encoding;
+	}
+
+	for (entry = directory_table; entry->lang_dir; ++entry)
+		if (STRNEQ (entry->lang_dir, lang, strlen (entry->lang_dir)))
+			return entry->source_encoding;
+
+	return fallback_source_encoding;
+}
+
+const char *get_canonical_charset_name (const char *charset)
+{
+	const struct charset_alias_entry *entry;
+	char *charset_upper = xstrdup (charset);
+	char *p;
+
+	for (p = charset_upper; *p; ++p)
+		*p = CTYPE (toupper, *p);
+
+	for (entry = charset_alias_table; entry->alias; ++entry)
+		if (STREQ (entry->alias, charset_upper)) {
+			free (charset_upper);
+			return entry->canonical_name;
+		}
+
+	free (charset_upper);
+	return charset;
+}
+
+/* Return the current locale's character set. */
+const char *get_locale_charset (void)
+{
+	const char *charset;
+	char *saved_locale;
+
+	/* We need to modify LC_CTYPE temporarily in order to look at the
+	 * codeset, so save it first.
+	 */
+	saved_locale = setlocale (LC_CTYPE, NULL);
+	if (saved_locale)
+		saved_locale = xstrdup (saved_locale);
+
+	setlocale (LC_CTYPE, "");
+
+	charset = locale_charset ();
+
+	/* Restore LC_CTYPE to its value on entry to this function. */
+	setlocale (LC_CTYPE, saved_locale);
+	free (saved_locale);
+
+	if (charset && *charset)
+		return get_canonical_charset_name (charset);
+	else
+		return NULL;
+}
+
+/* Find a locale with this character set. This is a non-portable operation,
+ * but required to make col(1) work correctly with -E. If no locale can be
+ * found, or if none needs to be set, return NULL.
+ *
+ * The caller should free the returned string when it is finished with it.
+ */
+char *find_charset_locale (const char *charset)
+{
+	const char *canonical_charset = get_canonical_charset_name (charset);
+	char *saved_locale;
+	const char supported_path[] = "/usr/share/i18n/SUPPORTED";
+	FILE *supported = NULL;
+	char *line = NULL;
+	size_t n = 0;
+	char *locale = NULL;
+
+	if (STREQ (charset, get_locale_charset ()))
+		return NULL;
+
+	saved_locale = setlocale (LC_CTYPE, NULL);
+	if (saved_locale)
+		saved_locale = xstrdup (saved_locale);
+
+	supported = fopen (supported_path, "r");
+	while (supported && getline (&line, &n, supported) >= 0) {
+		const char *space = strchr (line, ' ');
+		if (space) {
+			char *encoding = xstrdup (space + 1);
+			char *newline = strchr (encoding, '\n');
+			if (newline)
+				*newline = 0;
+			if (STREQ (canonical_charset,
+				   get_canonical_charset_name (encoding))) {
+				locale = xstrndup (line, space - line);
+				/* Is this locale actually installed? */
+				if (setlocale (LC_CTYPE, locale)) {
+					free (encoding);
+					goto out;
+				} else {
+					free (locale);
+					locale = NULL;
+				}
+			}
+			free (encoding);
+		}
+		free (line);
+		line = NULL;
+	}
+
+	if (strlen (canonical_charset) >= 5 &&
+	    STRNEQ (canonical_charset, "UTF-8", 5)) {
+		locale = xstrdup ("C.UTF-8");
+		if (setlocale (LC_CTYPE, locale))
+			goto out;
+		free (locale);
+		locale = xstrdup ("en_US.UTF-8");
+		if (setlocale (LC_CTYPE, locale))
+			goto out;
+		free (locale);
+		locale = NULL;
+	}
+
+out:
+	free (line);
+	setlocale (LC_CTYPE, saved_locale);
+	free (saved_locale);
+	if (supported)
+		fclose (supported);
+	return locale;
+}
+
+/* Can we take this input encoding and produce this output encoding, perhaps
+ * with the help of some iconv pipes? */
+static bool compatible_encodings (const char *input, const char *output)
+{
+	if (STREQ (input, output))
+		return true;
+
+	/* If the input is ASCII, recoding should be easy. Try it. */
+	if (STREQ (input, "ANSI_X3.4-1968"))
+		return true;
+
+	/* If the input is UTF-8, it's either a simple recoding of whatever
+	 * we want or else it probably won't work at all no matter what we
+	 * do. We might as well try it for now.
+	 */
+	if (STREQ (input, "UTF-8"))
+		return true;
+
+	/* If the output is ASCII, this is probably because the caller
+	 * explicitly asked for it, so we have little choice but to try.
+	 */
+	if (STREQ (output, "ANSI_X3.4-1968"))
+		return true;
+
+#ifdef MULTIBYTE_GROFF
+	/* Special case for some CJK UTF-8 locales, which take UTF-8 input
+	 * recoded from EUC-JP (etc.) and produce UTF-8 output. This is
+	 * rather filthy.
+	 */
+	if ((STREQ (input, "BIG5") || STREQ (input, "BIG5HKSCS") ||
+	     STREQ (input, "EUC-JP") ||
+	     STREQ (input, "EUC-CN") || STREQ (input, "GBK") ||
+	     STREQ (input, "EUC-KR") ||
+	     STREQ (input, "EUC-TW")) &&
+	    STREQ (output, "UTF-8"))
+		return true;
+#endif /* MULTIBYTE_GROFF */
+
+	return false;
+}
+
+/* Return the default groff device for the given character set. This may be
+ * overridden by the user. The page's source encoding is needed to ensure
+ * that the device is compatible: consider ru_RU.UTF-8, which needs ascii8
+ * and a trailing iconv pipe to recode to UTF-8.
+ *
+ * All this encoding compatibility stuff feels like a slightly nasty hack,
+ * but I haven't yet come up with a cleaner way to do it.
+ */
+const char *get_default_device (const char *charset_from_locale,
+				const char *source_encoding)
+{
+	const struct charset_entry *entry;
+
+	if (get_groff_preconv ()) {
+		/* ASCII is a special case, and the only way we can get
+		 * things like bullet marks to come out right is by using
+		 * the ascii device. People using such a basic locale
+		 * probably don't want anything fancy anyway.
+		 */
+		if (charset_from_locale &&
+		    STREQ (charset_from_locale, "ANSI_X3.4-1968"))
+			return "ascii";
+		else
+			return "utf8";
+	}
+
+	if (!charset_from_locale)
+		return fallback_default_device;
+
+	for (entry = charset_table; entry->charset_from_locale; ++entry) {
+		if (STREQ (entry->charset_from_locale, charset_from_locale)) {
+			const char *roff_encoding =
+				get_roff_encoding (entry->default_device,
+						   source_encoding);
+			if (compatible_encodings (source_encoding,
+						  roff_encoding))
+				return entry->default_device;
+		}
+	}
+
+	return fallback_default_device;
+}
+
+/* Is this a known *roff device name? */
+bool _GL_ATTRIBUTE_PURE is_roff_device (const char *device)
+{
+	const struct device_entry *entry;
+
+	for (entry = device_table; entry->roff_device; ++entry) {
+		if (STREQ (entry->roff_device, device))
+			return true;
+	}
+
+	return false;
+}
+
+/* Find the input encoding expected by groff, and set the LESSCHARSET
+ * environment variable appropriately.
+ */
+const char *get_roff_encoding (const char *device, const char *source_encoding)
+{
+	const struct device_entry *entry;
+	bool found = false;
+	const char *roff_encoding = NULL;
+
+	if (device) {
+		for (entry = device_table; entry->roff_device; ++entry) {
+			if (STREQ (entry->roff_device, device)) {
+				found = true;
+				roff_encoding = entry->roff_encoding;
+				break;
+			}
+		}
+	}
+
+	if (!found)
+		roff_encoding = fallback_roff_encoding;
+
+#ifdef MULTIBYTE_GROFF
+	/* An ugly special case is needed here. The utf8 device normally
+	 * takes ISO-8859-1 input. However, with the multibyte patch, when
+	 * recoding from CJK character sets it takes UTF-8 input instead.
+	 * This is evil, but there's not much that can be done about it
+	 * apart from waiting for groff 2.0.
+	 */
+	if (device && STREQ (device, "utf8") && !get_groff_preconv () &&
+	    STREQ (get_locale_charset (), "UTF-8")) {
+		const char *ctype = setlocale (LC_CTYPE, NULL);
+		if (STRNEQ (ctype, "ja_JP", 5) ||
+		    STRNEQ (ctype, "ko_KR", 5) ||
+		    STRNEQ (ctype, "zh_CN", 5) ||
+		    STRNEQ (ctype, "zh_HK", 5) ||
+		    STRNEQ (ctype, "zh_SG", 5) ||
+		    STRNEQ (ctype, "zh_TW", 5))
+			roff_encoding = "UTF-8";
+	}
+#endif /* MULTIBYTE_GROFF */
+
+	return roff_encoding ? roff_encoding : source_encoding;
+}
+
+/* Find the output encoding that this device will produce, or NULL if it
+ * will simply pass through the input encoding.
+ */
+const char * _GL_ATTRIBUTE_PURE get_output_encoding (const char *device)
+{
+	const struct device_entry *entry;
+
+	for (entry = device_table; entry->roff_device; ++entry)
+		if (STREQ (entry->roff_device, device))
+			return entry->output_encoding;
+
+	return NULL;
+}
+
+/* Return the value of LESSCHARSET appropriate for this locale. */
+const char * _GL_ATTRIBUTE_PURE get_less_charset (
+	const char *charset_from_locale)
+{
+	const struct less_charset_entry *entry;
+
+	if (charset_from_locale) {
+		for (entry = less_charset_table; entry->charset_from_locale;
+		     ++entry)
+			if (STREQ (entry->charset_from_locale,
+				   charset_from_locale))
+				return entry->less_charset;
+	}
+
+	return fallback_less_charset;
+}
+
+/* Return the value of JLESSCHARSET appropriate for this locale. May return
+ * NULL.
+ */
+const char * _GL_ATTRIBUTE_PURE get_jless_charset (
+	const char *charset_from_locale)
+{
+	const struct less_charset_entry *entry;
+
+	if (charset_from_locale) {
+		for (entry = less_charset_table; entry->charset_from_locale;
+		     ++entry)
+			if (STREQ (entry->charset_from_locale,
+				   charset_from_locale))
+				return entry->jless_charset;
+	}
+
+	return NULL;
+}
+
+/* Convert Emacs-style coding tags to ones that libiconv understands. */
+static char *convert_encoding (char *encoding)
+{
+	size_t encoding_len = strlen (encoding);
+	const struct conversion_entry *entry;
+
+#define STRIP(s, l) do { \
+	if (encoding_len > (l) && \
+	    !strcasecmp (encoding + encoding_len - (l), (s))) \
+		encoding[encoding_len - (l)] = '\0'; \
+} while (0)
+
+	STRIP ("-dos", 4);
+	STRIP ("-mac", 4);
+	STRIP ("-unix", 5);
+
+#undef STRIP
+
+	for (entry = conversion_table; entry->from; ++entry)
+		if (!strcasecmp (entry->from, encoding)) {
+			free (encoding);
+			return xstrdup (entry->to);
+		}
+
+	return encoding;
+}
+
+/* Inspect the first line of data in a pipeline for preprocessor encoding
+ * declarations.
+ *
+ * If to_encoding and modified_line are both non-NULL, and if the encoding
+ * declaration in the input does not match to_encoding, then return an
+ * encoding declaration line modified to refer to the given to_encoding in
+ * *modified_line.  The caller should free *modified_line.
+ */
+char *check_preprocessor_encoding (pipeline *p, const char *to_encoding,
+				   char **modified_line)
+{
+	char *pp_encoding = NULL;
+	const char *line = pipeline_peekline (p);
+	const char *directive = NULL, *directive_end, *pp_search;
+	size_t pp_encoding_len = 0;
+
+	/* Some people use .\" incorrectly. We allow it for encoding
+	 * declarations but not for preprocessor declarations.
+	 */
+	if (line &&
+	    (STRNEQ (line, PP_COOKIE, 4) || STRNEQ (line, ".\\\" ", 4))) {
+		const char *newline = strchr (line, '\n');
+
+		directive = line + 4;
+		directive_end = newline ? newline : strchr (directive, '\0');
+		pp_search = memmem (directive, directive_end - directive,
+				    "-*-", 3);
+	}
+
+	if (directive && pp_search) {
+		pp_search += 3;
+		while (pp_search && pp_search < directive_end && *pp_search) {
+			while (*pp_search == ' ')
+				++pp_search;
+			if (STRNEQ (pp_search, "coding:", 7)) {
+				const char *pp_encoding_allow;
+				pp_search += 7;
+				while (*pp_search == ' ')
+					++pp_search;
+				pp_encoding_allow = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
+						    "abcdefghijklmnopqrstuvwxyz"
+						    "0123456789-_/:.()";
+				pp_encoding_len = strspn (pp_search,
+							  pp_encoding_allow);
+				pp_encoding = xstrndup (pp_search,
+							pp_encoding_len);
+				pp_encoding = convert_encoding (pp_encoding);
+				debug ("preprocessor encoding: %s\n",
+				       pp_encoding);
+				break;
+			} else {
+				pp_search = memchr (pp_search, ';',
+						    directive_end - pp_search);
+				if (pp_search)
+					++pp_search;
+			}
+		}
+	}
+
+	if (to_encoding && modified_line &&
+	    pp_encoding && strcasecmp (pp_encoding, to_encoding)) {
+		assert (directive_end);
+		assert (pp_search);
+		*modified_line = xasprintf
+			("%.*s%s%.*s\n",
+			 (int) (pp_search - line), line,
+			 to_encoding,
+			 (int) (directive_end - (pp_search + pp_encoding_len)),
+			 pp_search + pp_encoding_len);
+	}
+
+	return pp_encoding;
+}
diff --git a/lib/encodings.h b/lib/encodings.h
new file mode 100644
index 0000000..8534648
--- /dev/null
+++ b/lib/encodings.h
@@ -0,0 +1,40 @@
+/*
+ * encodings.h: Interface to locale and encoding handling for man
+ *
+ * Copyright (C) 2003, 2004, 2006, 2007, 2008 Colin Watson.
+ *
+ * This file is part of man-db.
+ *
+ * man-db 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * man-db 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 man-db; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include <stdbool.h>
+
+const char *get_groff_preconv (void);
+char *get_page_encoding (const char *lang);
+const char *get_source_encoding (const char *lang);
+const char *get_canonical_charset_name (const char *charset);
+const char *get_locale_charset (void);
+char *find_charset_locale (const char *charset);
+const char *get_default_device (const char *locale_charset,
+				const char *source_encoding);
+bool is_roff_device (const char *device);
+const char *get_roff_encoding (const char *device,
+			       const char *source_encoding);
+const char *get_output_encoding (const char *device);
+const char *get_less_charset (const char *locale_charset);
+const char *get_jless_charset (const char *locale_charset);
+char *check_preprocessor_encoding (struct pipeline *p, const char *to_code,
+				   char **modified_line);
diff --git a/lib/glcontainers.c b/lib/glcontainers.c
new file mode 100644
index 0000000..cbd635c
--- /dev/null
+++ b/lib/glcontainers.c
@@ -0,0 +1,77 @@
+/*
+ * glcontainers.c: common Gnulib container helpers
+ *
+ * Copyright (C) 2019 Colin Watson.
+ *
+ * This file is part of man-db.
+ *
+ * man-db 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * man-db 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 man-db; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#ifdef HAVE_CONFIG_H
+#  include "config.h"
+#endif /* HAVE_CONFIG_H */
+
+#include <stdbool.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "gl_xlist.h"
+#include "gl_xmap.h"
+#include "gl_xset.h"
+#include "hash-pjw-bare.h"
+
+#include "manconfig.h"
+
+#include "glcontainers.h"
+
+bool _GL_ATTRIBUTE_PURE string_equals (const void *s1, const void *s2)
+{
+	return STREQ ((const char *) s1, (const char *) s2);
+}
+
+size_t _GL_ATTRIBUTE_PURE string_hash (const void *s)
+{
+	return hash_pjw_bare (s, strlen ((const char *) s));
+}
+
+void plain_free (const void *s)
+{
+	/* gl_list declares the argument as const, but there doesn't seem to
+	 * be a good reason for this.
+	 */
+	free ((void *) s);
+}
+
+gl_list_t new_string_list (gl_list_implementation_t implementation,
+			   bool allow_duplicates)
+{
+	return gl_list_create_empty (implementation, string_equals,
+				     string_hash, plain_free,
+				     allow_duplicates);
+}
+
+gl_map_t new_string_map (gl_map_implementation_t implementation,
+			 gl_mapvalue_dispose_fn vdispose_fn)
+{
+	return gl_map_create_empty (implementation, string_equals, string_hash,
+				    plain_free, vdispose_fn);
+}
+
+gl_set_t new_string_set (gl_set_implementation_t implementation)
+{
+	return gl_set_create_empty (implementation, string_equals, string_hash,
+				    plain_free);
+}
diff --git a/lib/glcontainers.h b/lib/glcontainers.h
new file mode 100644
index 0000000..a60bf2e
--- /dev/null
+++ b/lib/glcontainers.h
@@ -0,0 +1,74 @@
+/*
+ * glcontainers.h: interface to common Gnulib container helpers
+ *
+ * Copyright (C) 2019 Colin Watson.
+ *
+ * This file is part of man-db.
+ *
+ * man-db 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * man-db 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 man-db; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#ifndef MAN_GLCONTAINERS_H
+#define MAN_GLCONTAINERS_H
+
+#include <stdbool.h>
+#include <stdlib.h>
+
+#include "gl_list.h"
+#include "gl_map.h"
+#include "gl_set.h"
+
+/* These types are compatible with those required by Gnulib container
+ * initialisation.
+ */
+
+bool string_equals (const void *s1, const void *s2);
+size_t string_hash (const void *s);
+void plain_free (const void *s);
+
+/* Convenience functions. */
+
+gl_list_t new_string_list (gl_list_implementation_t implementation,
+			   bool allow_duplicates);
+gl_map_t new_string_map (gl_map_implementation_t implementation,
+			 gl_mapvalue_dispose_fn vdispose_fn);
+gl_set_t new_string_set (gl_set_implementation_t implementation);
+
+/* Iterator macros. */
+
+#define GL_LIST_FOREACH_START(list, item) \
+	do { \
+		gl_list_iterator_t list##_iter = gl_list_iterator (list); \
+		gl_list_node_t list##_node; \
+		while (gl_list_iterator_next (&list##_iter, \
+					      (const void **) &item, \
+					      &list##_node))
+
+#define GL_LIST_FOREACH_END(list) \
+		gl_list_iterator_free (&list##_iter); \
+	} while (0)
+
+#define GL_MAP_FOREACH_START(map, key, value) \
+	do { \
+		gl_map_iterator_t map##_iter = gl_map_iterator (map); \
+		while (gl_map_iterator_next (&map##_iter, \
+					     (const void **) &key, \
+					     (const void **) &value))
+
+#define GL_MAP_FOREACH_END(map) \
+		gl_map_iterator_free (&map##_iter); \
+	} while (0)
+
+#endif /* MAN_GLCONTAINERS_H */
diff --git a/lib/linelength.c b/lib/linelength.c
new file mode 100644
index 0000000..875000d
--- /dev/null
+++ b/lib/linelength.c
@@ -0,0 +1,110 @@
+/*
+ * linelength.c: find the terminal line length
+ * Preferences: 1. MANWIDTH, 2. COLUMNS, 3. ioctl, 4. 80
+ *
+ * Originally adapted from Andries Brouwer's man implementation, also
+ * released under the GPL: authors believed to include Martin Schulze and
+ * Jon Tombs, dated 1995/09/02.
+ *
+ * Changes for man-db copyright (C) 2001, 2003, 2007 Colin Watson.
+ *
+ * This file is part of man-db.
+ *
+ * man-db 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * man-db 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 man-db; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#  include "config.h"
+#endif /* HAVE_CONFIG_H */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <termios.h>
+#include <sys/ioctl.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+
+#include "linelength.h"
+
+#ifndef _PATH_TTY
+# define _PATH_TTY "/dev/tty"
+#endif /* _PATH_TTY */
+
+static int line_length = -1;
+
+int get_line_length (void)
+{
+	const char *columns;
+	int width;
+#ifdef TIOCGWINSZ
+	int dev_tty, tty_fd = -1;
+#endif
+
+	if (line_length != -1)
+		return line_length;
+
+	line_length = 80;
+
+	columns = getenv ("MANWIDTH");
+	if (columns != NULL) {
+		width = atoi (columns);
+		if (width > 0)
+			return line_length = width;
+	}
+
+	columns = getenv ("COLUMNS");
+	if (columns != NULL) {
+		width = atoi (columns);
+		if (width > 0)
+			return line_length = width;
+	}
+
+#ifdef TIOCGWINSZ
+	/* Original TIOCGWINSZ approach was from Jon Tombs.
+	 * We don't require both stdin and stdout to be a tty, and line
+	 * length is primarily a property of output. However, if it happens
+	 * that stdin is connected to a terminal but stdout isn't, then that
+	 * may well be because the user is trying something like
+	 * 'MAN_KEEP_STDERR=1 man foo >/dev/null' to see just the error
+	 * messages, so use the window size from stdin as a fallback.
+	 * In some cases we may have neither (e.g. if man is running inside
+	 * lesspipe); /dev/tty should be a reliable way to get to the
+	 * current tty if it exists.
+	 */
+	dev_tty = open (_PATH_TTY, O_RDONLY);
+	if (dev_tty >= 0)
+		tty_fd = dev_tty;
+	else if (isatty (STDOUT_FILENO))
+		tty_fd = STDOUT_FILENO;
+	else if (isatty (STDIN_FILENO))
+		tty_fd = STDIN_FILENO;
+	if (tty_fd >= 0) {
+		int ret;
+		struct winsize wsz;
+
+		ret = ioctl (tty_fd, TIOCGWINSZ, &wsz);
+		if (dev_tty >= 0)
+			close (dev_tty);
+		if (ret)
+			perror ("TIOCGWINSZ failed");
+		else if (wsz.ws_col)
+			return line_length = wsz.ws_col;
+	}
+#endif
+
+	return line_length = 80;
+}
diff --git a/lib/linelength.h b/lib/linelength.h
new file mode 100644
index 0000000..49d958f
--- /dev/null
+++ b/lib/linelength.h
@@ -0,0 +1,23 @@
+/*
+ * linelength.h: interface to find the terminal line length
+ *
+ * Copyright (C) 2007 Colin Watson.
+ *
+ * This file is part of man-db.
+ *
+ * man-db 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * man-db 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 man-db; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA.
+ */
+
+int get_line_length (void);
diff --git a/lib/orderfiles.c b/lib/orderfiles.c
new file mode 100644
index 0000000..bc12c88
--- /dev/null
+++ b/lib/orderfiles.c
@@ -0,0 +1,177 @@
+/*
+ * orderfiles.c: order file accesses to optimise disk load
+ *
+ * Copyright (C) 2014 Colin Watson.
+ *
+ * Inspired by and loosely based on dpkg/src/filesdb.c, which is:
+ *   Copyright (C) 1995 Ian Jackson <ian@chiark.greenend.org.uk>
+ *   Copyright (C) 2000,2001 Wichert Akkerman <wakkerma@debian.org>
+ *   Copyright (C) 2008-2014 Guillem Jover <guillem@debian.org>
+ *
+ * This file is part of man-db.
+ *
+ * man-db 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * man-db 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 man-db; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#ifdef HAVE_CONFIG_H
+#  include "config.h"
+#endif /* HAVE_CONFIG_H */
+
+#ifdef HAVE_LINUX_FIEMAP_H
+#  include <linux/fiemap.h>
+#  include <linux/fs.h>
+#  include <sys/ioctl.h>
+#  include <sys/vfs.h>
+#endif /* HAVE_LINUX_FIEMAP_H */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "gl_hash_map.h"
+#include "gl_rbtree_list.h"
+#include "gl_xlist.h"
+#include "gl_xmap.h"
+
+#include "manconfig.h"
+
+#include "glcontainers.h"
+#include "orderfiles.h"
+
+#if defined(HAVE_LINUX_FIEMAP_H)
+gl_map_t physical_offsets = NULL;
+
+static int compare_physical_offsets (const void *a, const void *b)
+{
+	const char *left = (const char *) a;
+	const char *right = (const char *) b;
+	const uint64_t *left_offset_p = gl_map_get (physical_offsets, left);
+	const uint64_t *right_offset_p = gl_map_get (physical_offsets, right);
+	uint64_t left_offset = left_offset_p ? *left_offset_p : UINT64_MAX;
+	uint64_t right_offset = right_offset_p ? *right_offset_p : UINT64_MAX;
+
+	if (left_offset < right_offset)
+		return -1;
+	else if (left_offset > right_offset)
+		return 1;
+	else
+		return 0;
+}
+
+void order_files (const char *dir, gl_list_t *basenamesp)
+{
+	gl_list_t basenames = *basenamesp, sorted_basenames;
+	int dir_fd_open_flags;
+	int dir_fd;
+	struct statfs fs;
+	const char *name;
+
+	dir_fd_open_flags = O_SEARCH | O_DIRECTORY;
+#ifdef O_PATH
+	dir_fd_open_flags |= O_PATH;
+#endif
+	dir_fd = open (dir, dir_fd_open_flags);
+	if (dir_fd < 0)
+		return;
+
+	if (fstatfs (dir_fd, &fs) < 0) {
+		close (dir_fd);
+		return;
+	}
+
+	/* Sort files by the physical locations of their first blocks, in an
+	 * attempt to minimise disk drive head movements.  This assumes that
+	 * files are small enough that they are likely to be in one block or
+	 * a small number of contiguous blocks, which seems a reasonable
+	 * assumption for manual pages.
+	 */
+	physical_offsets = gl_map_create_empty (GL_HASH_MAP, string_equals,
+						string_hash, NULL, plain_free);
+	sorted_basenames = new_string_list (GL_RBTREE_LIST, false);
+	GL_LIST_FOREACH_START (basenames, name) {
+		struct {
+			struct fiemap fiemap;
+			struct fiemap_extent extent;
+		} fm;
+		int fd;
+
+		fd = openat (dir_fd, name, O_RDONLY);
+		if (fd < 0)
+			continue;
+
+		memset (&fm, 0, sizeof (fm));
+		fm.fiemap.fm_start = 0;
+		fm.fiemap.fm_length = fs.f_bsize;
+		fm.fiemap.fm_flags = 0;
+		fm.fiemap.fm_extent_count = 1;
+
+		if (ioctl (fd, FS_IOC_FIEMAP, (unsigned long) &fm) == 0) {
+			uint64_t *offset = XMALLOC (uint64_t);
+			*offset = fm.extent.fe_physical;
+			/* Borrow the key from basenames; since
+			 * physical_offsets has a shorter lifetime, we don't
+			 * need to duplicate it.
+			 */
+			gl_map_put (physical_offsets, name, offset);
+		}
+
+		close (fd);
+		gl_sortedlist_add (sorted_basenames, compare_physical_offsets,
+				   xstrdup (name));
+	} GL_LIST_FOREACH_END (basenames);
+	gl_map_free (physical_offsets);
+	physical_offsets = NULL;
+	close (dir_fd);
+	gl_list_free (basenames);
+	*basenamesp = sorted_basenames;
+}
+#elif defined(HAVE_POSIX_FADVISE)
+void order_files (const char *dir, gl_list_t *basenamesp)
+{
+	gl_list_t basenames = *basenamesp;
+	int dir_fd_open_flags;
+	int dir_fd;
+	const char *name;
+
+	dir_fd_open_flags = O_SEARCH | O_DIRECTORY;
+#ifdef O_PATH
+	dir_fd_open_flags |= O_PATH;
+#endif
+	dir_fd = open (dir, dir_fd_open_flags);
+	if (dir_fd < 0)
+		return;
+
+	/* While we can't actually order the files, we can at least ask the
+	 * kernel to preload them.
+	 */
+	GL_LIST_FOREACH_START (basenames, name) {
+		int fd = openat (dir_fd, name, O_RDONLY | O_NONBLOCK);
+		if (fd >= 0) {
+			posix_fadvise (fd, 0, 0, POSIX_FADV_WILLNEED);
+			close (fd);
+		}
+	} GL_LIST_FOREACH_END (basenames);
+
+	close (dir_fd);
+}
+#else
+void order_files (const char *dir _GL_UNUSED, gl_list_t *basenamesp _GL_UNUSED)
+{
+}
+#endif
diff --git a/lib/orderfiles.h b/lib/orderfiles.h
new file mode 100644
index 0000000..dae41cc
--- /dev/null
+++ b/lib/orderfiles.h
@@ -0,0 +1,25 @@
+/*
+ * orderfiles.h: interface to ordering file accesses to optimise disk load
+ *
+ * Copyright (C) 2014 Colin Watson.
+ *
+ * This file is part of man-db.
+ *
+ * man-db 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * man-db 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 man-db; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include "gl_list.h"
+
+void order_files (const char *dir, gl_list_t *basenamesp);
diff --git a/lib/pathsearch.c b/lib/pathsearch.c
new file mode 100644
index 0000000..c733c3a
--- /dev/null
+++ b/lib/pathsearch.c
@@ -0,0 +1,131 @@
+/*
+ * pathsearch.c: $PATH-searching functions.
+ *
+ * Copyright (C) 2004, 2007, 2008, 2009, 2011 Colin Watson.
+ *
+ * This file is part of man-db.
+ *
+ * man-db 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * man-db 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 man-db; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#  include "config.h"
+#endif /* HAVE_CONFIG_H */
+
+#include <stdbool.h>
+#include <string.h>
+#include <stdlib.h>
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+#include "xgetcwd.h"
+#include "xvasprintf.h"
+
+#include "manconfig.h"
+#include "pathsearch.h"
+
+static bool pathsearch (const char *name, const mode_t bits)
+{
+	char *cwd = NULL;
+	char *path = getenv ("PATH");
+	char *pathtok;
+	const char *element;
+	struct stat st;
+	bool ret = false;
+
+	if (!path)
+		/* Eh? Oh well. */
+		return false;
+
+	if (strchr (name, '/')) {
+		/* Qualified name; look directly. */
+		if (stat (name, &st) == -1)
+			return false;
+		if (S_ISREG (st.st_mode) && (st.st_mode & bits))
+			return true;
+		return false;
+	}
+
+	pathtok = path = xstrdup (path);
+
+	/* Unqualified name; iterate over $PATH looking for it. */
+	for (element = strsep (&pathtok, ":"); element;
+	     element = strsep (&pathtok, ":")) {
+		char *filename;
+
+		if (!*element) {
+			if (!cwd)
+				cwd = xgetcwd ();
+			element = cwd;
+		}
+
+		filename = xasprintf ("%s/%s", element, name);
+		if (stat (filename, &st) == -1) {
+			free (filename);
+			continue;
+		}
+
+		free (filename);
+
+		if (S_ISREG (st.st_mode) && (st.st_mode & bits)) {
+			ret = true;
+			break;
+		}
+	}
+
+	free (path);
+	free (cwd);
+	return ret;
+}
+
+bool pathsearch_executable (const char *name)
+{
+	return pathsearch (name, 0111);
+}
+
+bool directory_on_path (const char *dir)
+{
+	char *cwd = NULL;
+	char *path = getenv ("PATH");
+	char *pathtok;
+	const char *element;
+	bool ret = false;
+
+	if (!path)
+		/* Eh? Oh well. */
+		return false;
+
+	pathtok = path = xstrdup (path);
+
+	for (element = strsep (&pathtok, ":"); element;
+	     element = strsep (&pathtok, ":")) {
+		if (!*element) {
+			if (!cwd)
+				cwd = xgetcwd ();
+			element = cwd;
+		}
+
+		if (STREQ (element, dir)) {
+			ret = true;
+			break;
+		}
+	}
+
+	free (path);
+	free (cwd);
+	return ret;
+}
diff --git a/lib/pathsearch.h b/lib/pathsearch.h
new file mode 100644
index 0000000..d9b024d
--- /dev/null
+++ b/lib/pathsearch.h
@@ -0,0 +1,36 @@
+/*
+ * pathsearch.h: interface to $PATH-searching functions
+ *
+ * Copyright (C) 2004 Colin Watson.
+ *
+ * This file is part of man-db.
+ *
+ * man-db 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * man-db 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 man-db; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA.
+ */
+
+#ifndef PATHSEARCH_H
+#define PATHSEARCH_H
+
+#include <stdbool.h>
+
+/* Return true if NAME is found as an executable regular file on the $PATH,
+ * otherwise false.
+ */
+bool pathsearch_executable (const char *name);
+
+/* Return true if DIR matches an entry on the $PATH, otherwise false. */
+bool directory_on_path (const char *dir);
+
+#endif /* PATHSEARCH_H */
diff --git a/lib/sandbox.c b/lib/sandbox.c
new file mode 100644
index 0000000..d934a0f
--- /dev/null
+++ b/lib/sandbox.c
@@ -0,0 +1,649 @@
+/*
+ * sandbox.c: Process sandboxing
+ *  
+ * Copyright (C) 2017 Colin Watson.
+ *
+ * This file is part of man-db.
+ *
+ * man-db 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * man-db 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 man-db; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Some of the syscall lists in this file come from systemd, whose
+ * copyright/licensing statement is as follows.  Per LGPLv2.1 s. 3, I have
+ * altered the original references to LGPLv2.1 to refer to GPLv2 instead.
+ *
+ * Copyright 2014 Lennart Poettering
+ *
+ * systemd 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * systemd 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 systemd; If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifdef HAVE_CONFIG_H
+#  include "config.h"
+#endif /* HAVE_CONFIG_H */
+
+#include <stdbool.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+#ifdef HAVE_LIBSECCOMP
+#  include <sys/ioctl.h>
+#  include <sys/ipc.h>
+#  include <sys/mman.h>
+#  include <sys/prctl.h>
+#  include <sys/shm.h>
+#  include <sys/socket.h>
+#  include <termios.h>
+#  include <seccomp.h>
+#endif /* HAVE_LIBSECCOMP */
+
+#include "manconfig.h"
+
+#include "error.h"
+
+#include "sandbox.h"
+
+struct man_sandbox {
+#ifdef HAVE_LIBSECCOMP
+	scmp_filter_ctx ctx;
+	scmp_filter_ctx permissive_ctx;
+#else /* !HAVE_LIBSECCOMP */
+	char dummy;
+#endif /* HAVE_LIBSECCOMP */
+};
+
+#ifdef HAVE_LIBSECCOMP
+static int seccomp_filter_unavailable = 0;
+
+static void gripe_seccomp_filter_unavailable (void)
+{
+	debug ("seccomp filtering requires a kernel configured with "
+	       "CONFIG_SECCOMP_FILTER\n");
+}
+
+static bool search_ld_preload (const char *needle)
+{
+	const char *ld_preload_env;
+	static char *ld_preload_file = NULL;
+
+	ld_preload_env = getenv ("LD_PRELOAD");
+	if (ld_preload_env && strstr (ld_preload_env, needle) != NULL)
+		return true;
+
+	if (!ld_preload_file) {
+		int fd;
+		struct stat st;
+		char *mapped = NULL;
+
+		fd = open ("/etc/ld.so.preload", O_RDONLY);
+		if (fd >= 0 && fstat (fd, &st) >= 0 && st.st_size)
+			mapped = mmap (NULL, st.st_size, PROT_READ,
+				       MAP_PRIVATE | MAP_FILE, fd, 0);
+		if (mapped) {
+			ld_preload_file = xstrndup (mapped, st.st_size);
+			munmap (mapped, st.st_size);
+		} else
+			ld_preload_file = xstrdup ("");
+		if (fd >= 0)
+			close (fd);
+	}
+	/* This isn't very accurate: /etc/ld.so.preload may contain
+	 * comments.  On the other hand, glibc says "it should only be used
+	 * for emergencies and testing".  File a bug if this is a problem
+	 * for you.
+	 */
+	if (strstr (ld_preload_file, needle) != NULL)
+		return true;
+
+	return false;
+}
+
+/* Can we load a seccomp filter into this process?
+ *
+ * This guard allows us to call sandbox_load in code paths that may
+ * conditionally do so again.
+ */
+static bool can_load_seccomp (void)
+{
+	const char *man_disable_seccomp;
+	int seccomp_status;
+
+	if (seccomp_filter_unavailable) {
+		gripe_seccomp_filter_unavailable ();
+		return false;
+	}
+
+	man_disable_seccomp = getenv ("MAN_DISABLE_SECCOMP");
+	if (man_disable_seccomp && *man_disable_seccomp) {
+		debug ("seccomp filter disabled by user request\n");
+		return false;
+	}
+
+	/* Valgrind causes the child process to make some system calls we
+	 * don't want to allow in general, so disable seccomp when running
+	 * on Valgrind.
+	 *
+	 * The correct approach seems to be to either require valgrind.h at
+	 * build-time or copy valgrind.h into this project and then use the
+	 * RUNNING_ON_VALGRIND macro, but I'd really rather not add a
+	 * build-dependency for this or take a copy of a >6000-line header
+	 * file.  Since the goal of this is only to disable the seccomp
+	 * filter under Valgrind, this will do for now.
+	 */
+	if (search_ld_preload ("/vgpreload")) {
+		debug ("seccomp filter disabled while running under "
+		       "Valgrind\n");
+		return false;
+	}
+
+	seccomp_status = prctl (PR_GET_SECCOMP);
+
+	if (seccomp_status == 0)
+		return true;
+
+	if (seccomp_status == -1) {
+		if (errno == EINVAL)
+			debug ("running kernel does not support seccomp\n");
+		else
+			debug ("unknown error getting seccomp status: %s\n",
+			       strerror (errno));
+	} else if (seccomp_status == 2)
+		debug ("seccomp already enabled\n");
+	else
+		debug ("unknown return value from PR_GET_SECCOMP: %d\n",
+		       seccomp_status);
+	return false;
+}
+#endif /* HAVE_LIBSECCOMP */
+
+#ifdef HAVE_LIBSECCOMP
+
+#define SC_ALLOW(name) \
+	do { \
+		int nr = seccomp_syscall_resolve_name (name); \
+		if (nr == __NR_SCMP_ERROR) \
+			break; \
+		if (seccomp_rule_add (ctx, SCMP_ACT_ALLOW, nr, 0) < 0) \
+			error (FATAL, errno, "can't add seccomp rule"); \
+	} while (0)
+
+#define SC_ALLOW_ARG_1(name, cmp1) \
+	do { \
+		int nr = seccomp_syscall_resolve_name (name); \
+		if (nr == __NR_SCMP_ERROR) \
+			break; \
+		if (seccomp_rule_add (ctx, SCMP_ACT_ALLOW, nr, 1, cmp1) < 0) \
+			error (FATAL, errno, "can't add seccomp rule"); \
+	} while (0)
+
+#define SC_ALLOW_ARG_2(name, cmp1, cmp2) \
+	do { \
+		int nr = seccomp_syscall_resolve_name (name); \
+		if (nr == __NR_SCMP_ERROR) \
+			break; \
+		if (seccomp_rule_add (ctx, SCMP_ACT_ALLOW, nr, \
+				      2, cmp1, cmp2) < 0) \
+			error (FATAL, errno, "can't add seccomp rule"); \
+	} while (0)
+
+/* Create a seccomp filter.
+ *
+ * If permissive is true, then the returned filter will allow limited file
+ * creation (although not making executable files).  This obviously
+ * constitutes less effective confinement, but it's necessary for some
+ * subprocesses (such as groff) that need the ability to write to temporary
+ * files.  Confining these further requires additional tools that can do
+ * path-based filtering or similar, such as AppArmor.
+ */
+static scmp_filter_ctx make_seccomp_filter (int permissive)
+{
+	scmp_filter_ctx ctx;
+	mode_t mode_mask = S_ISUID | S_ISGID | S_IXUSR | S_IXGRP | S_IXOTH;
+	int create_mask = O_CREAT
+#ifdef O_TMPFILE
+		| O_TMPFILE
+#endif /* O_TMPFILE */
+		;
+
+	debug ("initialising seccomp filter (permissive: %d)\n", permissive);
+	ctx = seccomp_init (SCMP_ACT_ERRNO (ENOSYS));
+	if (!ctx)
+		error (FATAL, errno, "can't initialise seccomp filter");
+
+	/* Allow sibling architectures for x86, since people sometimes mix
+	 * and match architectures there for performance reasons.
+	 */
+	switch (seccomp_arch_native ()) {
+		case SCMP_ARCH_X86:
+			seccomp_arch_add (ctx, SCMP_ARCH_X86_64);
+			seccomp_arch_add (ctx, SCMP_ARCH_X32);
+			break;
+		case SCMP_ARCH_X86_64:
+			seccomp_arch_add (ctx, SCMP_ARCH_X86);
+			seccomp_arch_add (ctx, SCMP_ARCH_X32);
+			break;
+		case SCMP_ARCH_X32:
+			seccomp_arch_add (ctx, SCMP_ARCH_X86);
+			seccomp_arch_add (ctx, SCMP_ARCH_X86_64);
+			break;
+	}
+
+	/* This sandbox is intended to allow operations that might
+	 * reasonably be needed in simple data-transforming pipes: it should
+	 * allow the process to do most reasonable things to itself, to read
+	 * and write data from and to already-open file descriptors, to open
+	 * files in read-only mode, and to fork new processes with the same
+	 * restrictions.  (If permissive is true, then it should also allow
+	 * limited file creation; see the header comment above.)
+	 *
+	 * Since I currently know of no library with suitable syscall lists,
+	 * the syscall lists here are taken from
+	 * systemd:src/shared/seccomp-util.c, last updated from commit
+	 * bca5a0eaccc849a669b4279e4bfcc6507083a07b (2019-08-01).
+	 */
+
+	/* systemd: SystemCallFilter=@default */
+	SC_ALLOW ("clock_getres");
+	SC_ALLOW ("clock_gettime");
+	SC_ALLOW ("clock_gettime64");
+	SC_ALLOW ("clock_nanosleep");
+	SC_ALLOW ("execve");
+	SC_ALLOW ("exit");
+	SC_ALLOW ("exit_group");
+	SC_ALLOW ("futex");
+	SC_ALLOW ("get_robust_list");
+	SC_ALLOW ("get_thread_area");
+	SC_ALLOW ("getegid");
+	SC_ALLOW ("getegid32");
+	SC_ALLOW ("geteuid");
+	SC_ALLOW ("geteuid32");
+	SC_ALLOW ("getgid");
+	SC_ALLOW ("getgid32");
+	SC_ALLOW ("getgroups");
+	SC_ALLOW ("getgroups32");
+	SC_ALLOW ("getpgid");
+	SC_ALLOW ("getpgrp");
+	SC_ALLOW ("getpid");
+	SC_ALLOW ("getppid");
+	SC_ALLOW ("getresgid");
+	SC_ALLOW ("getresgid32");
+	SC_ALLOW ("getresuid");
+	SC_ALLOW ("getresuid32");
+	SC_ALLOW ("getrlimit");
+	SC_ALLOW ("getsid");
+	SC_ALLOW ("gettid");
+	SC_ALLOW ("gettimeofday");
+	SC_ALLOW ("getuid");
+	SC_ALLOW ("getuid32");
+	SC_ALLOW ("membarrier");
+	SC_ALLOW ("nanosleep");
+	SC_ALLOW ("pause");
+	SC_ALLOW ("prlimit64");
+	SC_ALLOW ("restart_syscall");
+	SC_ALLOW ("rseq");
+	SC_ALLOW ("rt_sigreturn");
+	SC_ALLOW ("sched_yield");
+	SC_ALLOW ("set_robust_list");
+	SC_ALLOW ("set_thread_area");
+	SC_ALLOW ("set_tid_address");
+	SC_ALLOW ("set_tls");
+	SC_ALLOW ("sigreturn");
+	SC_ALLOW ("time");
+	SC_ALLOW ("ugetrlimit");
+
+	/* systemd: SystemCallFilter=@basic-io */
+	SC_ALLOW ("_llseek");
+	SC_ALLOW ("close");
+	SC_ALLOW ("dup");
+	SC_ALLOW ("dup2");
+	SC_ALLOW ("dup3");
+	SC_ALLOW ("lseek");
+	SC_ALLOW ("pread64");
+	SC_ALLOW ("preadv");
+	SC_ALLOW ("preadv2");
+	SC_ALLOW ("pwrite64");
+	SC_ALLOW ("pwritev");
+	SC_ALLOW ("pwritev2");
+	SC_ALLOW ("read");
+	SC_ALLOW ("readv");
+	SC_ALLOW ("write");
+	SC_ALLOW ("writev");
+
+	/* systemd: SystemCallFilter=@file-system (subset) */
+	SC_ALLOW ("access");
+	SC_ALLOW ("chdir");
+	if (permissive) {
+		SC_ALLOW_ARG_1 ("chmod",
+				SCMP_A1 (SCMP_CMP_MASKED_EQ, mode_mask, 0));
+		SC_ALLOW_ARG_1 ("creat",
+				SCMP_A1 (SCMP_CMP_MASKED_EQ, mode_mask, 0));
+	}
+	SC_ALLOW ("faccessat");
+	SC_ALLOW ("fallocate");
+	SC_ALLOW ("fchdir");
+	if (permissive) {
+		SC_ALLOW_ARG_1 ("fchmod",
+				SCMP_A1 (SCMP_CMP_MASKED_EQ, mode_mask, 0));
+		SC_ALLOW_ARG_1 ("fchmodat",
+				SCMP_A2 (SCMP_CMP_MASKED_EQ, mode_mask, 0));
+	}
+	SC_ALLOW ("fcntl");
+	SC_ALLOW ("fcntl64");
+	SC_ALLOW ("fstat");
+	SC_ALLOW ("fstat64");
+	SC_ALLOW ("fstatat64");
+	SC_ALLOW ("fstatfs");
+	SC_ALLOW ("fstatfs64");
+	SC_ALLOW ("ftruncate");
+	SC_ALLOW ("ftruncate64");
+	if (permissive) SC_ALLOW ("futimesat");
+	SC_ALLOW ("getcwd");
+	SC_ALLOW ("getdents");
+	SC_ALLOW ("getdents64");
+	if (permissive) SC_ALLOW ("link");
+	if (permissive) SC_ALLOW ("linkat");
+	SC_ALLOW ("lstat");
+	SC_ALLOW ("lstat64");
+	if (permissive) SC_ALLOW ("mkdir");
+	if (permissive) SC_ALLOW ("mkdirat");
+	SC_ALLOW ("mmap");
+	SC_ALLOW ("mmap2");
+	SC_ALLOW ("munmap");
+	SC_ALLOW ("newfstatat");
+	SC_ALLOW ("oldfstat");
+	SC_ALLOW ("oldlstat");
+	SC_ALLOW ("oldstat");
+	if (permissive) {
+		SC_ALLOW_ARG_2 ("open",
+				SCMP_A1 (SCMP_CMP_MASKED_EQ, O_CREAT, O_CREAT),
+				SCMP_A2 (SCMP_CMP_MASKED_EQ, mode_mask, 0));
+		SC_ALLOW_ARG_2 ("openat",
+				SCMP_A2 (SCMP_CMP_MASKED_EQ, O_CREAT, O_CREAT),
+				SCMP_A3 (SCMP_CMP_MASKED_EQ, mode_mask, 0));
+#ifdef O_TMPFILE
+		SC_ALLOW_ARG_2 ("open",
+				SCMP_A1 (SCMP_CMP_MASKED_EQ,
+					 O_TMPFILE, O_TMPFILE),
+				SCMP_A2 (SCMP_CMP_MASKED_EQ, mode_mask, 0));
+		SC_ALLOW_ARG_2 ("openat",
+				SCMP_A2 (SCMP_CMP_MASKED_EQ,
+					 O_TMPFILE, O_TMPFILE),
+				SCMP_A3 (SCMP_CMP_MASKED_EQ, mode_mask, 0));
+#endif /* O_TMPFILE */
+		SC_ALLOW_ARG_1 ("open",
+				SCMP_A1 (SCMP_CMP_MASKED_EQ, create_mask, 0));
+		SC_ALLOW_ARG_1 ("openat",
+				SCMP_A2 (SCMP_CMP_MASKED_EQ, create_mask, 0));
+	} else {
+		SC_ALLOW_ARG_1 ("open",
+				SCMP_A1 (SCMP_CMP_MASKED_EQ, O_ACCMODE,
+					 O_RDONLY));
+		SC_ALLOW_ARG_1 ("openat",
+				SCMP_A2 (SCMP_CMP_MASKED_EQ, O_ACCMODE,
+					 O_RDONLY));
+	}
+	SC_ALLOW ("readlink");
+	SC_ALLOW ("readlinkat");
+	if (permissive) SC_ALLOW ("rename");
+	if (permissive) SC_ALLOW ("renameat");
+	if (permissive) SC_ALLOW ("renameat2");
+	if (permissive) SC_ALLOW ("rmdir");
+	SC_ALLOW ("stat");
+	SC_ALLOW ("stat64");
+	SC_ALLOW ("statfs");
+	SC_ALLOW ("statfs64");
+	SC_ALLOW ("statx");
+	if (permissive) SC_ALLOW ("symlink");
+	if (permissive) SC_ALLOW ("symlinkat");
+	if (permissive) SC_ALLOW ("truncate");
+	if (permissive) SC_ALLOW ("truncateat");
+	if (permissive) SC_ALLOW ("unlink");
+	if (permissive) SC_ALLOW ("unlinkat");
+	if (permissive) SC_ALLOW ("utime");
+	if (permissive) SC_ALLOW ("utimensat");
+	if (permissive) SC_ALLOW ("utimes");
+
+	/* systemd: SystemCallFilter=@io-event */
+	SC_ALLOW ("_newselect");
+	SC_ALLOW ("epoll_create");
+	SC_ALLOW ("epoll_create1");
+	SC_ALLOW ("epoll_ctl");
+	SC_ALLOW ("epoll_ctl_old");
+	SC_ALLOW ("epoll_pwait");
+	SC_ALLOW ("epoll_wait");
+	SC_ALLOW ("epoll_wait_old");
+	SC_ALLOW ("eventfd");
+	SC_ALLOW ("eventfd2");
+	SC_ALLOW ("poll");
+	SC_ALLOW ("ppoll");
+	SC_ALLOW ("pselect6");
+	SC_ALLOW ("select");
+
+	/* systemd: SystemCallFilter=@ipc (subset) */
+	SC_ALLOW ("pipe");
+	SC_ALLOW ("pipe2");
+
+	/* systemd: SystemCallFilter=@process (subset) */
+	SC_ALLOW ("arch_prctl");
+	SC_ALLOW ("capget");
+	SC_ALLOW ("clone");
+	SC_ALLOW ("execveat");
+	SC_ALLOW ("fork");
+	SC_ALLOW ("getrusage");
+	SC_ALLOW ("prctl");
+	SC_ALLOW ("vfork");
+	SC_ALLOW ("wait4");
+	SC_ALLOW ("waitid");
+	SC_ALLOW ("waitpid");
+
+	/* systemd: SystemCallFilter=@signal */
+	SC_ALLOW ("rt_sigaction");
+	SC_ALLOW ("rt_sigpending");
+	SC_ALLOW ("rt_sigprocmask");
+	SC_ALLOW ("rt_sigsuspend");
+	SC_ALLOW ("rt_sigtimedwait");
+	SC_ALLOW ("sigaction");
+	SC_ALLOW ("sigaltstack");
+	SC_ALLOW ("signal");
+	SC_ALLOW ("signalfd");
+	SC_ALLOW ("signalfd4");
+	SC_ALLOW ("sigpending");
+	SC_ALLOW ("sigprocmask");
+	SC_ALLOW ("sigsuspend");
+
+	/* systemd: SystemCallFilter=@sync */
+	SC_ALLOW ("fdatasync");
+	SC_ALLOW ("fsync");
+	SC_ALLOW ("msync");
+	SC_ALLOW ("sync");
+	SC_ALLOW ("sync_file_range");
+	SC_ALLOW ("syncfs");
+
+	/* systemd: SystemCallFilter=@system-service (subset) */
+	SC_ALLOW ("brk");
+	SC_ALLOW ("fadvise64");
+	SC_ALLOW ("fadvise64_64");
+	SC_ALLOW ("getrandom");
+	if (permissive)
+		SC_ALLOW ("ioctl");
+	else {
+		SC_ALLOW_ARG_1 ("ioctl", SCMP_A1 (SCMP_CMP_EQ, TCGETS));
+		SC_ALLOW_ARG_1 ("ioctl", SCMP_A1 (SCMP_CMP_EQ, TIOCGWINSZ));
+	}
+	SC_ALLOW ("madvise");
+	SC_ALLOW ("mprotect");
+	SC_ALLOW ("mremap");
+	SC_ALLOW ("sched_getaffinity");
+	SC_ALLOW ("sysinfo");
+	SC_ALLOW ("uname");
+
+	/* Extra syscalls not in any of systemd's sets. */
+	SC_ALLOW ("arm_fadvise64_64");
+	SC_ALLOW ("arm_sync_file_range");
+	SC_ALLOW ("sync_file_range2");
+
+	/* Allow killing processes and threads.  This is unfortunate but
+	 * unavoidable: groff uses kill to explicitly pass on SIGPIPE to its
+	 * child processes, and we can't do any more sophisticated filtering
+	 * in seccomp.
+	 */
+	SC_ALLOW ("kill");
+	SC_ALLOW ("tgkill");
+
+	/* Allow some relatively harmless System V shared memory operations.
+	 * These seem to be popular among the sort of program that wants to
+	 * install itself in /etc/ld.so.preload or similar (e.g. antivirus
+	 * programs and VPNs).
+	 */
+	SC_ALLOW_ARG_1 ("shmat", SCMP_A2 (SCMP_CMP_EQ, SHM_RDONLY));
+	SC_ALLOW_ARG_1 ("shmctl", SCMP_A1 (SCMP_CMP_EQ, IPC_STAT));
+	SC_ALLOW ("shmdt");
+	SC_ALLOW ("shmget");
+
+	/* Some antivirus programs use an LD_PRELOAD wrapper that wants to
+	 * talk to a private daemon using a Unix-domain socket.  We really
+	 * don't want to allow these syscalls in general, but if such a
+	 * thing is in use we probably have no choice.
+	 *
+	 * snoopy is an execve monitoring tool that may log messages to
+	 * /dev/log.
+	 */
+	if (search_ld_preload ("libesets_pac.so") ||
+	    search_ld_preload ("libscep_pac.so") ||
+	    search_ld_preload ("libsnoopy.so")) {
+		SC_ALLOW ("connect");
+		SC_ALLOW ("recvmsg");
+		SC_ALLOW ("sendmsg");
+		SC_ALLOW ("sendto");
+		SC_ALLOW ("setsockopt");
+		SC_ALLOW_ARG_1 ("socket", SCMP_A0 (SCMP_CMP_EQ, AF_UNIX));
+	}
+	/* ESET sends messages to a System V message queue. */
+	if (search_ld_preload ("libesets_pac.so") ||
+	    search_ld_preload ("libscep_pac.so")) {
+		SC_ALLOW_ARG_1 ("msgget", SCMP_A1 (SCMP_CMP_EQ, 0));
+		SC_ALLOW ("msgsnd");
+	}
+
+	return ctx;
+}
+
+#undef SC_ALLOW_ARG_2
+#undef SC_ALLOW_ARG_1
+#undef SC_ALLOW
+
+#endif /* HAVE_LIBSECCOMP */
+
+/* Create a sandbox for processing untrusted data.
+ *
+ * This only sets up data structures; the caller must call sandbox_load to
+ * actually enter the sandbox.
+ */
+man_sandbox *sandbox_init (void)
+{
+	man_sandbox *sandbox = XZALLOC (man_sandbox);
+
+#ifdef HAVE_LIBSECCOMP
+	sandbox->ctx = make_seccomp_filter (0);
+	sandbox->permissive_ctx = make_seccomp_filter (1);
+#else /* !HAVE_LIBSECCOMP */
+	sandbox->dummy = 0;
+#endif /* HAVE_LIBSECCOMP */
+
+	return sandbox;
+}
+
+#ifdef HAVE_LIBSECCOMP
+static void _sandbox_load (man_sandbox *sandbox, int permissive) {
+	if (can_load_seccomp ()) {
+		scmp_filter_ctx ctx;
+
+		debug ("loading seccomp filter (permissive: %d)\n",
+		       permissive);
+		if (permissive)
+			ctx = sandbox->permissive_ctx;
+		else
+			ctx = sandbox->ctx;
+		if (seccomp_load (ctx) < 0) {
+			if (errno == EINVAL || errno == EFAULT) {
+				/* The kernel doesn't give us particularly
+				 * fine-grained errors.  EINVAL could in
+				 * theory be an invalid BPF program, but
+				 * it's much more likely that the running
+				 * kernel doesn't support seccomp filtering.
+				 * EFAULT normally means a programming
+				 * error, but it could also be returned here
+				 * by some versions of qemu-user
+				 * (https://bugs.launchpad.net/bugs/1726394).
+				 */
+				gripe_seccomp_filter_unavailable ();
+				/* Don't try this again. */
+				seccomp_filter_unavailable = 1;
+			} else
+				error (FATAL, errno,
+				       "can't load seccomp filter");
+		}
+	}
+}
+#else /* !HAVE_LIBSECCOMP */
+static void _sandbox_load (man_sandbox *sandbox _GL_UNUSED,
+			   int permissive _GL_UNUSED)
+{
+}
+#endif /* HAVE_LIBSECCOMP */
+
+/* Enter a sandbox for processing untrusted data. */
+void sandbox_load (void *data)
+{
+	man_sandbox *sandbox = data;
+
+	_sandbox_load (sandbox, 0);
+}
+
+/* Enter a sandbox for processing untrusted data, allowing limited file
+ * creation.
+ */
+void sandbox_load_permissive (void *data)
+{
+	man_sandbox *sandbox = data;
+
+	_sandbox_load (sandbox, 1);
+}
+
+/* Free a sandbox for processing untrusted data. */
+void sandbox_free (void *data) {
+	man_sandbox *sandbox = data;
+
+#ifdef HAVE_LIBSECCOMP
+	seccomp_release (sandbox->ctx);
+	seccomp_release (sandbox->permissive_ctx);
+#endif /* HAVE_LIBSECCOMP */
+
+	free (sandbox);
+}
diff --git a/lib/sandbox.h b/lib/sandbox.h
new file mode 100644
index 0000000..a838e0e
--- /dev/null
+++ b/lib/sandbox.h
@@ -0,0 +1,38 @@
+/*
+ * sandbox.h: Interface to process sandboxing
+ *  
+ * Copyright (C) 2017 Colin Watson.
+ *
+ * This file is part of man-db.
+ *
+ * man-db 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * man-db 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 man-db; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#ifndef MAN_SANDBOX_H
+#define MAN_SANDBOX_H
+
+struct man_sandbox;
+typedef struct man_sandbox man_sandbox;
+
+extern man_sandbox *sandbox_init (void);
+
+/* These functions take a man_sandbox * argument, but have more generic
+ * types suitable for use with pipecmd_pre_exec.
+ */
+extern void sandbox_load (void *data);
+extern void sandbox_load_permissive (void *data);
+extern void sandbox_free (void *data);
+
+#endif /* MAN_SANDBOX_H */
diff --git a/lib/security.c b/lib/security.c
new file mode 100644
index 0000000..55f2d85
--- /dev/null
+++ b/lib/security.c
@@ -0,0 +1,178 @@
+/*
+ * security.c: Routines to aid secure uid operations 
+ *  
+ * Copyright (C) 1994, 1995 Graeme W. Wilford. (Wilf.)
+ * Copyright (C) 2001, 2003, 2004, 2007, 2010, 2011 Colin Watson.
+ *
+ * This file is part of man-db.
+ *
+ * man-db 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * man-db 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 man-db; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Mon Aug  8 20:35:30 BST 1994  Wilf. (G.Wilford@ee.surrey.ac.uk) 
+ */
+
+#ifdef HAVE_CONFIG_H
+#  include "config.h"
+#endif /* HAVE_CONFIG_H */
+
+#include <stdbool.h>
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <assert.h>
+#include <errno.h>
+#include <sys/types.h>
+
+#include "gettext.h"
+#define _(String) gettext (String)
+
+#include "manconfig.h"
+
+#include "error.h"
+#include "cleanup.h"
+#include "pipeline.h"
+
+#include "security.h"
+
+#ifdef MAN_OWNER
+
+   /*
+    * This is the name of the user that the preformatted man pages belong to.
+    * If you are running man as a setuid program, you should make sure
+    * that all of the cat pages and the directories that
+    * they live in are writeable by this user.
+    */
+
+#  include <pwd.h>
+#  include <unistd.h>
+
+#  include "idpriv.h"
+
+uid_t ruid;				/* initial real user id */
+uid_t euid;				/* initial effective user id */
+uid_t uid;				/* current euid */
+gid_t rgid;				/* initial real group id */
+gid_t egid;				/* initial effective group id */
+gid_t gid;				/* current egid */
+
+static struct passwd *man_owner;
+
+/* Keep a count of how many times we've dropped privileges, and only regain
+ * them if regain_effective_privs() is called an equal number of times.
+ */
+static int priv_drop_count = 0;
+
+static void gripe_set_euid (void)
+{
+	error (FATAL, errno, _("can't set effective uid"));
+}
+
+#endif /* MAN_OWNER */
+
+void init_security (void)
+{
+#ifdef MAN_OWNER
+	ruid = getuid ();
+	uid = euid = geteuid ();
+	debug ("ruid=%d, euid=%d\n", (int) ruid, (int) euid);
+	rgid = getgid ();
+	gid = egid = getegid ();
+	debug ("rgid=%d, egid=%d\n", (int) rgid, (int) egid);
+	priv_drop_count = 0;
+	drop_effective_privs ();
+#endif /* MAN_OWNER */
+}
+
+bool _GL_ATTRIBUTE_PURE running_setuid (void)
+{
+#ifdef MAN_OWNER
+	return ruid != euid;
+#else /* !MAN_OWNER */
+	return false;
+#endif
+}
+
+#ifdef MAN_OWNER
+/* Return a pointer to the password entry structure for MAN_OWNER. This
+ * structure will be statically stored.
+ */
+struct passwd *get_man_owner (void)
+{
+	if (man_owner)
+		return man_owner;
+
+	man_owner = getpwnam (MAN_OWNER);
+	if (!man_owner)
+		error (FAIL, 0, _("the setuid man user \"%s\" does not exist"),
+		       MAN_OWNER);
+	assert (man_owner);
+	return man_owner;
+}
+#endif /* MAN_OWNER */
+
+/* 
+ * function to gain user privs by either (a) dropping effective privs 
+ * completely (saved ids) or (b) reversing euid w/ uid.
+ * Ignore if superuser.
+ */
+void drop_effective_privs (void)
+{
+#ifdef MAN_OWNER
+	if (uid != ruid) {
+		debug ("drop_effective_privs()\n");
+		if (idpriv_temp_drop ())
+			gripe_set_euid ();
+		uid = ruid;
+		gid = rgid;
+	}
+
+	priv_drop_count++;
+	debug ("++priv_drop_count = %d\n", priv_drop_count);
+#endif /* MAN_OWNER */
+}
+
+/* 
+ * function to (re)gain setuid privs by (a) setting euid from suid or (b)
+ * (re)reversing uid w/ euid. Ignore if superuser.
+ */
+void regain_effective_privs (void)
+{
+#ifdef MAN_OWNER
+	if (priv_drop_count) {
+		priv_drop_count--;
+		debug ("--priv_drop_count = %d\n", priv_drop_count);
+		if (priv_drop_count)
+			return;
+	}
+
+	if (uid != euid) {
+		debug ("regain_effective_privs()\n");
+		if (idpriv_temp_restore ())
+			gripe_set_euid ();
+
+		uid = euid;
+		gid = egid;
+	}
+#endif /* MAN_OWNER */
+}
+
+/* Pipeline command pre-exec hook to permanently drop privileges. */
+void drop_privs (void *data _GL_UNUSED)
+{
+#ifdef MAN_OWNER
+	if (idpriv_drop ())
+		gripe_set_euid ();
+#endif /* MAN_OWNER */
+}
diff --git a/lib/security.h b/lib/security.h
new file mode 100644
index 0000000..fdfadc4
--- /dev/null
+++ b/lib/security.h
@@ -0,0 +1,36 @@
+/*
+ * security.h: Interface to secure uid operations
+ *
+ * Copyright (C) 1990, 1991 John W. Eaton.
+ * Copyright (C) 1994, 1995 Graeme W. Wilford. (Wilf.)
+ * Copyright (C) 2001, 2002, 2004, 2008, 2010, 2011 Colin Watson.
+ *
+ * This file is part of man-db.
+ *
+ * man-db 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * man-db 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 man-db; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include <stdbool.h>
+#include <pwd.h>
+
+/* security.c */
+extern void drop_effective_privs (void);
+extern void regain_effective_privs (void);
+extern void drop_privs (void *data);
+extern void init_security (void);
+extern bool running_setuid (void);
+#ifdef MAN_OWNER
+extern struct passwd *get_man_owner (void);
+#endif /* MAN_OWNER */
diff --git a/lib/tempfile.c b/lib/tempfile.c
new file mode 100644
index 0000000..91ee0fb
--- /dev/null
+++ b/lib/tempfile.c
@@ -0,0 +1,79 @@
+/* tempfile.c: handle temporary directory creation (formerly also temporary
+ * files but this is no longer used).
+ *
+ * Copyright (C) 2001, 2003, 2007, 2009, 2011 Colin Watson.
+ *
+ * This file is part of man-db.
+ *
+ * man-db 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * man-db 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 man-db; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#ifdef HAVE_CONFIG_H
+#  include "config.h"
+#endif /* HAVE_CONFIG_H */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+#include "xvasprintf.h"
+
+#include "manconfig.h"
+
+static const char *path_search (void)
+{
+	const char *dir = NULL;
+
+	if (getuid () == geteuid () && getgid () == getegid ()) {
+		dir = getenv ("TMPDIR");
+		if (!dir || !CAN_ACCESS (dir, W_OK))
+			dir = NULL;
+		if (!dir) {
+			dir = getenv ("TMP");
+			if (!dir || !CAN_ACCESS (dir, W_OK))
+				dir = NULL;
+		}
+	}
+#ifdef P_tmpdir
+	if (!dir) {
+		dir = P_tmpdir;
+		if (!dir || !CAN_ACCESS (dir, W_OK))
+			dir = NULL;
+	}
+#endif
+	if (!dir) {
+		dir = "/tmp";
+		if (!CAN_ACCESS (dir, W_OK))
+			dir = NULL;
+	}
+
+	return dir;
+}
+
+/* Get a sane temporary directory, looking in $TMPDIR, P_tmpdir, and finally
+ * /tmp.
+ */
+char *create_tempdir (const char *template)
+{
+	const char *dir = path_search ();
+	char *created_dirname;
+
+	if (!dir)
+		return NULL;
+	created_dirname = xasprintf ("%s/%sXXXXXX", dir, template);
+	if (!mkdtemp (created_dirname))
+		return NULL;
+	return created_dirname;
+}
diff --git a/lib/util.c b/lib/util.c
new file mode 100644
index 0000000..580cafd
--- /dev/null
+++ b/lib/util.c
@@ -0,0 +1,267 @@
+/*
+ * util.c
+ *
+ * Copyright (C) 1990, 1991 John W. Eaton.
+ * Copyright (C) 1994, 1995 Graeme W. Wilford. (Wilf.)
+ * Copyright (C) 2001, 2002, 2004, 2007, 2008, 2010 Colin Watson.
+ *
+ * This file is part of man-db.
+ *
+ * man-db 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * man-db 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 man-db; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * John W. Eaton
+ * jwe@che.utexas.edu
+ * Department of Chemical Engineering
+ * The University of Texas at Austin
+ * Austin, Texas  78712
+ *
+ * Wed May  4 15:44:47 BST 1994 Wilf. (G.Wilford@ee.surrey.ac.uk): slight
+ * changes to all routines, mainly cosmetic.
+ */
+
+#ifdef HAVE_CONFIG_H
+#  include "config.h"
+#endif /* HAVE_CONFIG_H */
+
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <dirent.h>
+#include <unistd.h>
+#include <locale.h>
+
+#include "stat-time.h"
+#include "timespec.h"
+#include "xvasprintf.h"
+
+#include "gettext.h"
+
+#include "manconfig.h"
+
+#include "error.h"
+#include "pipeline.h"
+
+/*
+ * Does file a have a different timestamp to file b?
+ *
+ * case:
+ *
+ *   a is man_page, b is cat_page
+ *
+ *   a and b have different times  returns  1/3  (ret & 1) == 1
+ *   a and b have same times       returns  0/2  (!(ret & 1)) == 1
+ *   a is zero in length           returns  + 2 (for Wilf. and his stray cats)
+ *   b is zero in length           returns  + 4
+ *   stat on a fails               returns   -1
+ *   stat on b fails               returns   -2
+ *   stat on a and b fails         returns   -3
+ */
+int is_changed (const char *fa, const char *fb)
+{
+	struct stat fa_sb;
+	struct stat fb_sb;
+	int fa_stat;
+	int fb_stat;
+	int status = 0;
+
+	debug ("is_changed: a=%s, b=%s", fa, fb);
+
+	fa_stat = stat (fa, &fa_sb);
+	if (fa_stat != 0)
+		status = 1;
+
+	fb_stat = stat (fb, &fb_sb);
+	if (fb_stat != 0)
+		status |= 2;
+
+	if (status != 0) {
+		debug (" (%d)\n", -status);
+		return -status;
+	}
+
+	if (fa_sb.st_size == 0)
+		status |= 2;
+
+	if (fb_sb.st_size == 0)
+		status |= 4;
+
+	status |= (timespec_cmp (get_stat_mtime (&fa_sb),
+				 get_stat_mtime (&fb_sb)) != 0);
+
+	debug (" (%d)\n", status);
+	return status;
+}
+
+/*
+ * Is path a directory?
+ */
+int is_directory (const char *path)
+{
+	struct stat sb;
+	int status;
+
+	status = stat (path, &sb);
+
+	if (status != 0)
+		return status;
+
+	return ((sb.st_mode & S_IFDIR) != 0);
+}
+
+/* Escape dangerous metacharacters before dumping into a shell command. */
+char *escape_shell (const char *unesc)
+{
+	char *esc, *escp;
+	const char *unescp;
+
+	if (!unesc)
+		return NULL;
+
+	escp = esc = xmalloc (strlen (unesc) * 2 + 1);
+	for (unescp = unesc; *unescp; unescp++)
+		if ((*unescp >= '0' && *unescp <= '9') ||
+		    (*unescp >= 'A' && *unescp <= 'Z') ||
+		    (*unescp >= 'a' && *unescp <= 'z') ||
+		    strchr (",-./:@_", *unescp))
+			*escp++ = *unescp;
+		else {
+			*escp++ = '\\';
+			*escp++ = *unescp;
+		}
+	*escp = 0;
+	return esc;
+}
+
+/* Remove a directory and all files in it.  Only recurse beyond that if
+ * RECURSE is set.
+ */
+int remove_directory (const char *directory, int recurse)
+{
+	DIR *handle = opendir (directory);
+	struct dirent *entry;
+
+	if (!handle)
+		return -1;
+	while ((entry = readdir (handle)) != NULL) {
+		struct stat st;
+		char *path;
+
+		if (STREQ (entry->d_name, ".") || STREQ (entry->d_name, ".."))
+			continue;
+		path = xasprintf ("%s/%s", directory, entry->d_name);
+		if (stat (path, &st) == -1) {
+			free (path);
+			closedir (handle);
+			return -1;
+		}
+		if (recurse && S_ISDIR (st.st_mode)) {
+			if (remove_directory (path, recurse) == -1) {
+				free (path);
+				closedir (handle);
+				return -1;
+			}
+		} else if (S_ISREG (st.st_mode)) {
+			if (unlink (path) == -1) {
+				free (path);
+				closedir (handle);
+				return -1;
+			}
+		}
+		free (path);
+	}
+	closedir (handle);
+
+	if (rmdir (directory) == -1)
+		return -1;
+	return 0;
+}
+
+/* Returns an allocated copy of s, with leading and trailing spaces
+ * removed.
+ */
+char * _GL_ATTRIBUTE_MALLOC trim_spaces (const char *s)
+{
+	int length;
+	while (*s == ' ')
+		++s;
+	length = strlen (s);
+	while (length && s[length - 1] == ' ')
+		--length;
+	return xstrndup (s, length);
+}
+
+char *lang_dir (const char *filename)
+{
+	char *ld;	/* the lang dir: point to static data */
+	const char *fm;	/* the first "/man/" dir */
+	const char *sm;	/* the second "/man?/" dir */
+
+	ld = xstrdup ("");
+	if (!filename) 
+		return ld;
+
+	/* Check whether filename is in a man page hierarchy. */
+	if (STRNEQ (filename, "man/", 4))
+		fm = filename;
+	else {
+		fm = strstr (filename, "/man/");
+		if (fm)
+			++fm;
+	}
+	if (!fm)
+		return ld;
+	sm = strstr (fm + 2, "/man");
+	if (!sm)
+		return ld;
+	if (sm[5] != '/')
+		return ld;
+	if (!strchr ("123456789lno", sm[4]))
+		return ld;
+
+	/* If there's no lang dir element, it's an English man page. */
+	if (sm == fm + 3) {
+		free (ld);
+		return xstrdup ("C");
+	}
+
+	/* found a lang dir */
+	fm += 4;
+	sm = strchr (fm, '/');
+	if (!sm)
+		return ld;
+	free (ld);
+	ld = xstrndup (fm, sm - fm);
+	debug ("found lang dir element %s\n", ld);
+	return ld;
+}
+
+void init_locale (void)
+{
+	char *locale = setlocale (LC_ALL, "");
+	if (!locale &&
+	    !getenv ("MAN_NO_LOCALE_WARNING") &&
+	    !getenv ("DPKG_RUNNING_VERSION"))
+		/* Obviously can't translate this. */
+		error (0, 0, "can't set the locale; make sure $LC_* and $LANG "
+			     "are correct");
+	setenv ("MAN_NO_LOCALE_WARNING", "1", 1);
+#ifdef ENABLE_NLS
+	bindtextdomain (PACKAGE, LOCALEDIR);
+	bindtextdomain (PACKAGE "-gnulib", LOCALEDIR);
+	textdomain (PACKAGE);
+#endif /* ENABLE_NLS */
+}
diff --git a/lib/wordfnmatch.c b/lib/wordfnmatch.c
new file mode 100644
index 0000000..613035b
--- /dev/null
+++ b/lib/wordfnmatch.c
@@ -0,0 +1,65 @@
+/*
+ * wordfnmatch.c: fnmatch on word boundaries
+ *
+ * Copyright (C) 2001, 2003, 2008 Colin Watson.
+ *
+ * This file is part of man-db.
+ *
+ * man-db 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * man-db 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 man-db; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#ifdef HAVE_CONFIG_H
+#  include "config.h"
+#endif /* HAVE_CONFIG_H */
+
+#include <stdbool.h>
+#include <stdlib.h>
+#include <ctype.h>
+
+#include "fnmatch.h"
+
+#include "manconfig.h"
+
+#include "wordfnmatch.h"
+
+/* TODO: How on earth do we allow multiple-word matches without
+ * reimplementing fnmatch()?
+ */
+bool word_fnmatch (const char *pattern, const char *string)
+{
+	char *dupstring = xstrdup (string);
+	const char *begin = dupstring;
+	char *p;
+
+	for (p = dupstring; *p; p++) {
+		if (CTYPE (isalpha, *p) || *p == '_')
+			continue;
+
+		/* Check for multiple non-word characters in a row. */
+		if (p <= begin + 1)
+			begin++;
+		else {
+			*p = '\0';
+			if (fnmatch (pattern, begin, FNM_CASEFOLD) == 0) {
+				free (dupstring);
+				return true;
+			}
+			begin = p + 1;
+		}
+	}
+
+	free (dupstring);
+	return false;
+}
diff --git a/lib/wordfnmatch.h b/lib/wordfnmatch.h
new file mode 100644
index 0000000..82e7cf7
--- /dev/null
+++ b/lib/wordfnmatch.h
@@ -0,0 +1,25 @@
+/*
+ * wordfnmatch.h: interface to fnmatch on word boundaries
+ *
+ * Copyright (C) 2001, 2003, 2008 Colin Watson.
+ *
+ * This file is part of man-db.
+ *
+ * man-db 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * man-db 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 man-db; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include <stdbool.h>
+
+bool word_fnmatch (const char *lowpattern, const char *string);
diff --git a/lib/xregcomp.c b/lib/xregcomp.c
new file mode 100644
index 0000000..cd6ed9d
--- /dev/null
+++ b/lib/xregcomp.c
@@ -0,0 +1,49 @@
+/*
+ * xregcomp.c: regcomp with error checking
+ *
+ * Copyright (C) 2008 Colin Watson.
+ *
+ * This file is part of man-db.
+ *
+ * man-db 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * man-db 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 man-db; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#ifdef HAVE_CONFIG_H
+#  include "config.h"
+#endif /* HAVE_CONFIG_H */
+
+#include "regex.h"
+
+#include "gettext.h"
+#include <locale.h>
+#define _(String) gettext (String)
+
+#include "manconfig.h"
+
+#include "error.h"
+#include "xregcomp.h"
+
+void xregcomp (regex_t *preg, const char *regex, int cflags)
+{
+	int err = regcomp (preg, regex, cflags);
+	if (err) {
+		size_t errstrsize;
+		char *errstr;
+		errstrsize = regerror (err, preg, NULL, 0);
+		errstr = xmalloc (errstrsize);
+		regerror (err, preg, errstr, errstrsize);
+		error (FATAL, 0, _("fatal: regex `%s': %s"), regex, errstr);
+	}
+}
diff --git a/lib/xregcomp.h b/lib/xregcomp.h
new file mode 100644
index 0000000..ca34b44
--- /dev/null
+++ b/lib/xregcomp.h
@@ -0,0 +1,25 @@
+/*
+ * xregcomp.h: interface to regcomp with error checking
+ *
+ * Copyright (C) 2008 Colin Watson.
+ *
+ * This file is part of man-db.
+ *
+ * man-db 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * man-db 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 man-db; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#include "regex.h"
+
+void xregcomp (regex_t *preg, const char *regex, int cflags);