2011-03-17  Jim Meyering  <meyering@redhat.com>

	don't version-control ChangeLog; instead, generate it from git log
	* Makefile.am (gen-ChangeLog): New rule.
	* .gitignore: List ChangeLog.

2011-02-20  Jim Meyering  <meyering@redhat.com>

	maint: remove unnecessary tests before free
	There is no longer any need to avoid "free(NULL)" (since SunOS 4),
	so replace each "if (P) free (P);" with "free (P);".
	* src/inp.c (get_input_file): Remove unnecessary test-before-free.
	* src/patch.c (get_some_switches): Likewise.
	* src/pch.c (intuit_diff_type, pch_swap): Likewise.

2011-02-17  Jim Meyering  <meyering@redhat.com>
	and Andreas Gruenbacher <agruen@linbit.com>

	don't warn twice about the same invalid file name
	* src/pch.c (name_is_valid): Don't warn about the same name twice.
	* tests/bad-filenames (emit_patch): Exercise the new code.

2011-02-16  Andreas Gruenbacher <agruen@linbit.com>

	* src/pch.c (name_is_valid): New function.
	(intuit_diff_type, best_name): Use name_is_valid() here.
	(strip_leading_slashes): Remove name validation tests from here.
	* tests/bad-filenames: Add more tests for covering more of the
	file name guessing corner cases in intuit_diff_type(), update the
	existing tests.
	* NEWS: Update.

2011-02-15  Andreas Gruenbacher <agruen@linbit.com>

	* src/patch.c (main): Fix use of initialized outst and add an
	additional assert.  Reported by Jim Meyering.

2011-02-03  Ozan Çağlayan <ozan@pardus.org.tr>

	Create directory test case
	* tests/create-delete: New test case creating a file in a new
	sub-directory (bug fixed on 2010-12-04).

2011-02-03  Andreas Gruenbacher <agruen@linbit.com>

	Also check if the input file is seekable if a filename is given (-i)
	* src/pch.c (open_patch_file): Also check if the input file is
	seekable if a filename is given (-i).
	* tests/pipe: New file.  Test this.
	* tests/Makefile.am (TESTS): Add it.

2011-02-03  Jim Meyering  <meyering@redhat.com>

	doc: mention the fix for CVE-2010-4651
	* NEWS: Mention the fix.

2011-02-01  Jim Meyering  <meyering@redhat.com>
	and Andreas Gruenbacher <agruen@linbit.com>

	Do not let a malicious patch create files above current directory
	This addresses CVE-2010-4651, reported by Jakub Wilk.
	https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2010-4651
	* src/util.c (strip_leading_slashes): Reject absolute file names and
	file names containing a component of "..".
	* tests/bad-filenames: New file.  Test for this.
	* tests/Makefile.am (TESTS): Add it.

2010-12-04  Andreas Gruenbacher <agruen@linbit.com>

	* src/util.c (make_tempfile): Create missing directories when
	necessary.

2010-10-29  Andreas Gruenbacher  <agruen@suse.de>

	* src/util.c: USE_XATTR is defined to 0 or 1, so we need to use #if
	instead of #ifdef.

2010-10-27  Andreas Gruenbacher  <agruen@suse.de>

	* src/util.c (set_file_attributes): Always expect the mode argument to
	be set when FA_MODE is specified.
	(create_backup_copy): Update accordingly.

	* src/patch.c (main): Set all file attributes of the temporary output
	file before renaming it over the final output file (possibly replacing
	the input file).  Pass the input file name to set_file_attributes().
	* src/util.c (set_file_attributes): When enabled (USE_XATTR), also
	copy extended attributes including attributes which define
	permissions.
	(copy_attr_error, copy_attr_quote, copy_attr_free, copy_attr_check,
	copy_attr): Helper functions for copying extended attributes.
	* m4/xattr.m4 (gl_FUNC_XATTR): Import from coreutils.
	* src/Makefile.am (patch_LDADD): Add $(LIB_XATTR) here.
	* bootstrap.conf: Use the gnulib verror module.

2010-10-26  Andreas Gruenbacher  <agruen@suse.de>

	* configure.ac: Remove obsolete checks for mktemp.

2010-10-20  Andreas Gruenbacher  <agruen@suse.de>

	* src/patch.c (print_header_line): Remove obsolete comment.

2010-10-14  Andreas Gruenbacher  <agruen@suse.de>

	* src/pch.c (there_is_another_patch): Set p_strip_trailing_cr
	to false if no_strip_trailing_cr is set independent of the verbosity.
	This broke the --binary option in combination with --silent.

2010-10-05  Andreas Gruenbacher  <agruen@suse.de>

	* src/util.c: Add a maybe_quoted parameter to fetchname.
	* src/pch.c: Only recognize quited filename in the "diff --git"
	format, at least for now.
	* tests/quoted-filenames: Update accordingly.
	* NEWS: Update accordingly.

2010-09-17  Andreas Gruenbacher  <agruen@suse.de>

	* src/inp.c (scan_input): Remove double quotearg().

	* src/patch.c (main): Generate the "patching file" message here.  When
	the input and output file name is not he same, include both names in
	the message.
	* src/inp.c (scan_input): Previously the "patching file" message was
	generated here.
	* tests/unmodified-files, tests/copy-rename: Update.

	* NEWS: Document that "diff --git" criss-cross renames are broken
	still.
	* tests/criss-cross: Test case currently expected to fail.

	* tests/criss-cross: Add copy-after-modify test case.

2010-09-16  Andreas Gruenbacher  <agruen@suse.de>

	* src/patch.c (open_outfile): New function.
	(init_output): Split into open_outfile() and the rest.

	* src/pch.c (do_ed_script): Add inname, outname, and
	outname_needs_removal arguments.  This isolates TMPOUTNAME and
	TMPOUTNAME_needs_removal to patch.c.
	* src/patch.c (main): Update do_ed_script() call.

	* bootstrap.conf: Use the gnulib tempname module.
	* src/util.c (make_tempfile): New function.

	* src/inp.c (plan_b): Compute TMPINNAME with make_tempfile() if needed
	instead of precomputing it in src/patch.c (main).

	* src/pch.c (open_patch_file): Compute TMPPATNAME with make_tempfile()
	if needed instead of precomputing it in src/patch.c (main).

	* src/patch.c (abort_hunk_unified): Replace unnecessary local variable.

	* src/patch.c (main): Compute TMPREJNAME with make_tempfile() only if
	needed.
	(abort_hunk, init_reject): Pass through the output file name, and base
	TMPREJNAME on it.

	* src/patch.c (main): Compute TMPOUTNAME with make_tempfile().
	(make_temp): Remove obsolete function.

2010-07-27  Tim Waugh  <twaugh@redhat.com>

	* src/patch.c: Stops "patch --get 1" from segfaulting.

2010-05-11  Andreas Gruenbacher  <agruen@suse.de>

	* src/patch.c: The read-only file check was not done for ed scripts;
	fix this.

2010-05-06  Andreas Gruenbacher  <agruen@suse.de>

	* tests/corrupt-reject-files, tests/crlf-handling: On Solaris, cat's
	-e option is only effective if -v is specified as well.

	* tests/test-lib.sh: Ignore error messages when cleaning up after a
	test has finished.

2010-05-05  Andreas Gruenbacher  <agruen@suse.de>

	* tests/test-lib.sh: Only use GNU diff when available.
	* tests/dash-o-append: Fix the expected result.

	* tests/create-delete: Do not use 'diff' here.
	* tests/merge: Require GNU diff.

	* bootstrap.conf: Use the gnulib unistd module.

	* bootstrap.conf: Use the gnulib mkdir module.
	* m4/mkdir.m4: Delete.

2010-05-04  Eric Blake  <eblake@redhat.com>

	* src/pch.c (includes): Add <io.h> for setmode.
	(intuit_diff_type): Avoid 8-bit problems.
	* src/util.c (parse_name): Likewise.
	* src/util.h (skip_spaces): Likewise.

2010-05-04  Andreas Gruenbacher  <agruen@suse.de>

	* tests/read-only-files: Remove the superuser test, and instead try
	out if a read-only file can be written to.

	* tests/test-lib.sh: Create temporary directories in builddir; this
	removes the need to do it safely: some systems do not have mktemp -d.

	* configure.ac, tests/Makefile: Remove $(TEST_SHELL) and use $(SHELL)
	instead.

	* src/version.c: Put the Free Software Foundation copyright first.
	* tests/read-only-files: Skip when run as superuser: even files
	without write permissions would be writable.

	* src/util.c (create_backup): Document patch's backup file logic.
	(create_backup, create_backup_copy): Add a flag to remember the backup
	file; use when a patch deletes a file.
	(move_file, copy_file): Better error messages.
	* tests/Makefile.am (TESTS): Remove remember-backup-files-2.
	* tests/remember-backup-files: Add tests from remember-backup-files-2.
	* tests/symlinks: Add a symlink backup file test.

	* tests/test-lib.sh: Flag tests with missing pre-requirements as
	SKIPped instead of PASSed.  Do not use GNU diff extensions, but
	still require a diff that understands "-u".
	* tests: Do not unnecessarily require GNU diff in a lot of tests.
	Make the sed utility optional.

	* src/pch.c (intuit_diff_type): Remove left-over debugging code.

	* src/pch.c (maybe_reverse): Allow to create and delete empty files.
	(sha1_says_nonexistent): New function for recognizing the sha1
	checksums of nonexistent and empty files.
	(skip_hex_digits): New helper function for skipping [0-9a-z].
	(intuit_diff_type): Parse the sha1 checksums in index lines.
	* tests/Makefile.am (XFAIL_TESTS): Remove empty-files.

2010-05-03  Andreas Gruenbacher  <agruen@suse.de>

	* src/pch.c (intuit_diff_type): Fix a bug where the reversed-patch
	check would wrongly pick the last name instead of the best name.
	* src/create-delete: Add test cases for that.

2010-05-02  Andreas Gruenbacher  <agruen@suse.de>

	* src/pch.c (fetchmode): Document that the "diff --git" format does
	not store file permissions of symlinks.
	* src/util.c (set_file_attributes): Since we don't have symlink file
	permissions, don't try to set them even on systems where we could.

	* tests/symlinks: Improve the backup file tests.

2010-05-02  Andreas Gruenbacher  <agruen@suse.de>

	* src/Makefile.am (patch_LDADD): Add $(LIB_CLOCK_GETTIME) here, after
	libpatch.a, so that clock_gettime is properly resolved on systems on
	which the library order matters.

	* NEWS: Update.
	* gnulib: Update to latest.
	* bootstrap: Update from gnulib.

	* src/patch.c (main): Refuse to patch read-only files, or at least warn
	when patching such files with --force or --batch.
	* patch.man: Document the changed behavior.
	* tests/read-only-files: Split read-only file test case off from
	tests/remember-backup-files.
	* tests/Makefile.am: Add new test case.

2010-04-29  Andreas Gruenbacher  <agruen@suse.de>

	* src/patch.c (main): Support git diffs which copy or rename files.
	* tests/copy-rename: New test case.
	* tests/Makefile.am (TESTS): Add test case.

	* src/patch.c (main): Convert outname into a char const *.
	* src/util.ch (create_backup, move_file, removedirs): Take char const *
	filenames.
	* src/util.c (makedirs): Take a char const * filename.
	(makedirs, removedirs): Take char const * filenames.  Create and
	modify a copy of the filename.

	* src/pch.c (p_copy, p_rename): New variables.
	(pch_copy, pch_rename): New functions.
	(intuit_diff_type): Parse the "copy from", "copy to", "rename from",
	and "rename to" headers.
	* src/util.c (fetchname): Return the fetched name per reference (after
	freeing the previous name if any).  Also free the previous timestamp
	string if any.

	* src/patch.c (main): When a git diff includes a file mode change,
	change to the new mode.
	* src/util.c (set_file_attributes): Add a mode parameter.
	* tests/file-modes: New test case.
	* tests/Makefile.am (TESTS): Add test case.

	* src/patch.c (main): Support git symlink diffs.
	* tests/symlinks: Add git symlink diff test cases.

	* src/pch.c (intuit_diff_type, there_is_another_patch): Pass up the
	file type.
	* src/patch.c (main): Check for consistent file types.

	* src/pch.c (intuit_diff_type): Only check for reversed patches when
	the input file type matches the patch file type.

	* src/util.c (move_file): Remove test which is always true.

2010-04-28  Andreas Gruenbacher  <agruen@suse.de>

	* src/pch.c (p_mode): New variable.
	(fetchmode, pch_mode): New functions.
	(intuit_diff_type): Recognize git diffs which contain no hunks.
	Parse and store the file modes in the "index", "old mode",
	"new mode", "deleted file mode", and "new file mode" headers.

	* src/util.c (copy_file): Require the mode parameter to include the
	file type.  Use that to decide whether to copy a regular file or a
	symlink.
	(create_backup): Refuse to back up files which are neither a regular
	file nor a symlink.
	(move_file): Add support for turning a temporary output file into a
	symlink.
	* src/patch.c (move_file, copy_file): Pass down the file type.
	* src/pch.h (prefix_components): Do not follow symlinks.

	* src/inp.c (get_input_file): Add a mode parameter specifying the
	input file type (which can be either S_IFREG or S_IFLNK).  The file
	type must match this mode parameter; for symbolic links, the --get
	option is not supported.
	(scan_input): Abort when plan_a() cannot handle a symbolic link.
	Say when patching a symbolic link instead of a regular file.
	(plan_a): Add support for reading symbolic links.
	* src/patch.c: For now, always tell get_input_file() to read regular
	files.
	* bootstrap.conf: Use the gnulib readlink module.

	* src/util.h (enum file_attributes): New type.
	(set_file_attributes): New function.
	* src/util.c (set_file_attributes): Move the code for setting file
	attributes here from create_backup_copy() and make it usable from
	patch.c as well.  Make it symlink safe.  In addition, also preserve
	the file owner when permitted.
	(create_backup_copy): Use set_file_attributes().
	* src/patch.c (main): Use set_file_attributes().
	* bootstrap.conf: Use the gnulib lchmod module.

2010-04-27  Andreas Gruenbacher  <agruen@suse.de>

	* bootstrap: Update from gnulib.

	* tests/Makefile.am (TESTS_ENVIRONMENT): Portability fix.

	* src/bestmatch.h (bestmatch): Fix an off-by-one error causing an
	out-of-bounds array access.

	* configure.ac (gl_CHECK_TYPE_STRUCT_UTIMBUF), m4/utimbuf.m4: Remove;
	utimbuf is no longer used.

	* src/util.h: Include <backupfile.h> here and not in each C file
	individually; this avoids a warning in merge.c with some compilers.

	* src/common.h: Do not redefine __attribute__ when it is already
	defined.

	* configure.ac: Do not use grep -q.

2010-04-27  Daniel Richard G. <skunk@iskunk.org>

	* src/common.h (enum diff): Remove the trailing comma.
	* src/patch.c (main): Do not use non-constant expressions in an array
	initializer.

	* src/bestmatch.h: Do not use variable-length arrays.

2010-04-26  Andreas Gruenbacher  <agruen@suse.de>

	* src/inp.c (get_input_file), src/pch.c (there_is_another_patch,
	intuit_diff_type): Use lstat instead of stat.  This causes patch to
	refuse patching symlinks (get_input_file() will refuse to read them).
	* src/util.c (create_backup): Refuse to create backups of symlinks.
	* tests/symlinks: New test case.
	* tests/Makefile.am (TESTS): Add test case.
	* bootstrap.conf: Use the gnulib lstat module.

	* src/pch.c (intuit_diff_type): Only check for reversed patches when
	the input file is patchable in the first place.

	* src/pch.c (get_input_file): If an input file is not a regular file,
	only skip the patch instead of aborting.
	* src/patch.c (main): If get_input_file() fails, skip the patch.

2010-04-25  Andreas Gruenbacher  <agruen@suse.de>

	* bootstrap.conf: Use the gnulib fcntl-h and sys_stat modules.
	* src/common.h: Remove the declarations provided by gnulib sys_stat.
	Always include fcntl.h (and depend on gnulib fcntl-h).
	* src/util.h: Remove duplicate include of <timespec.h>.
	* configure.ac: Remove obsolete checks for fcntl.h and utime.h.

	* src/common.h, src/patch.c, src/util.c, src/util.h: Do not declare
	variables as "volatile" unnecessarily.

2010-04-24  Andreas Gruenbacher  <agruen@suse.de>

	* src/inp.c, src/patch.c, src/pch.c, src/util.c: Stop declaring
	local variables as "register" all over the place: a decent compiler
	will do a good enough job of place variables into registers where it
	makes sense.

2010-04-23  Andreas Gruenbacher  <agruen@suse.de>

	* patch.man: Describe the fixed behavior of --set-time and --set-utc
	for timestamps that include time zones.
	* NEWS: Update.

2010-04-22  Andreas Gruenbacher  <agruen@suse.de>

	* src/common.h (enum diff): New enumeration GIT_BINARY_DIFF.
	* src/pch.c (intuit_diff_type): Recognize git binary patches.
	* src/patch.c (main): Complain when fed git binary patches.
	* tests/git-binary-diff: New test case.
	* tests/Makefile.am (TESTS): Add test case.

	* src/pch.c (intuit_diff_type): Parse filenames in "diff --git" lines.
	* src/util.c (parse_name): New helper function for parsing unquoted or
	quoted filenames.
	* src/util.h (parse_name): Declare.
	(skip_spaces): New helper function for skipping spaces in a string.

	* src/pch.c (intuit_diff_type): Make sure we don't leak file names
	even when fed weird input.

	* src/util.c (parse_c_string): New function.
	(fetchname): Add support for quoted filenames.
	* tests/quoted-filenames: New test case.
	* tests/Makefile.am (TESTS): Add test case.

	* src/util.c (fetchname): Untangle the name and timestamp parsing.

	* src/util.c (strip_leading_slashes): Make this a separate function.
	(fetchname): Use strip_leading_slashes() here.

2010-04-21  Andreas Gruenbacher  <agruen@suse.de>

	* src/patch.c (main): Support nanosecond timestamps.  Replaqce utime()
	with utimens().
	* src/util.c (create_backup_copy): Preserve nanosecond timestamps.
	Replace utime() with utimens().
	* src/util.h: Remove the utime() related declarations, and include
	the utimens() and nanosecond related headers instead.
	* bootstrap.conf: Add the stat-time and utimens modules.

	* src/Makefile.am (patch_SOURCES): Remove maketime.c, maketime.h,
	partime.c, and partime.h.
	(patch_LDFLAGS): Add LIB_CLOCK_GETTIME for clock_gettime().
	* src/util.c: Replace maketime.h and partime.h with getdate.h.
	(fetchname): Replace str2time() with get_date().  Sanitize the test
	for epoch timestamps.
	* src/patch.c (main): When --set-utc is given, set the TZ environment
	variable to UTC so that get_date() will default to UTC timestamps.
	* tests/preserve-mode-and-timestamp: Switching to get_date() revealed
	that str2time() was ignoring timezones.  In order to test --set-utc
	now that get_date() fixes this, we must use timestamps that do not
	include timestamps here.
	* bootstrap.conf: Add the clock-time, getdate, gettime, and setenv
	modules.

2010-04-20  Andreas Gruenbacher  <agruen@suse.de>

	* src/pch.h (pch_timestamp): Return timestamp as struct timespec
	instead of time_t.
	* src/pch.c: Use struct timespec instead of time_t.  A tv_sec value
	of -1 indicates "no timestamp".
	* src/util.h (fetchname): Return timestamp as struct timespec
	instead of time_t.
	* src/util.c (fetchname): str2time() does not give us nanoseconds; set
	them to zero for now.
	* src/patch.c (main): Only use the seconds in timestamps for now.
	* bootstrap.conf: Add the time module for getting struct timespec
	declared on old hosts.

	* src/util.c (quote_system_arg): Add a replacement for
	quote_system_arg() which uses quotearg's shell quoting style.
	* src/Makefile.am (patch_SOURCES): Remove quotesys.c and quotesys.h.
	* src/quotesys.c, src/quotesys.h: Delete.

	* src/util.c (fetchname): Cosmetic fix.

2010-04-19  Ludovic Courtès <ludo@gnu.org>

	* src/Makefile.am (patch_SOURCES): Remove the obsolete diffseq.h to
	fix "make dist".

2010-04-18  Andreas Gruenbacher  <agruen@suse.de>

	* Globally rename type LINENUM to lin (as in diffutils).

	* src/patch.c (Argv): Change type to char ** so that we can pass Argv
	to getopt_long without warning.
	* src/maketime.c (maketime): Fix year overflow check.

	* diffseq: Use the gnulib version instead of a private copy.

	* gnulib: Update to latest.

2010-04-15  Andreas Gruenbacher  <agruen@suse.de>

	* tests/merge: Use the sed commands i, a, and c in their standard form
	instead of relying on a GNU extension, and pass sed a script (-f)
	instead of a list of commands via -e.
	Some versions of sed don't support expressions like /^\(\|foo\)$/.
	* tests/corrupt-reject-files: Use the more widely available -e switch
	instead of -A.
	* tests/crlf-handling: Likewise.
	* tests/preserve-mode-and-timestamp: Use touch -t instead of touch -d.
	Some non-GNU versions of date can't show a file's timestamp.

	* Makefile.am: Add rules for generating .version and for including
	.tarball-version in dist tarballs.

2010-04-12  Andreas Gruenbacher  <agruen@suse.de>

	* src/util.c: Fix the use of HAVE_UTIME_H.
	* src/pch.c (EDITOR_PROGRAM): Rename from ed_PROGRAM.
	* configure.ac (EDITOR_PROGRAM): Rename from ed_PROGRAM.

	* configure.ac: Add automake and gnulib macros, replace several
	obsolete macros.
	* Makefile.am, lib/Makefile.am, src/Makefile.am, tests/Makefile.am:
	Add for automake.
	* autogen.sh, INSTALL, Makefile.in, mkinstalldirs, update-version.sh:
	Obsolete; remove.
	* README-hacking: Import from diffutils, replace cvs with git.
	* build-aux: Move gnulib auxiliary files here from the top-level
	directory.
	* gnulib: Add gnulib git submodule.
	* bootstrap, bootstrap.conf: Import from gnulib and adjust.
	* gl/lib: Remove gnulib files from the repository; they are now
	imported into lib/ from gnulib as needed.
	* tests/test-lib.sh: Use $abs_top_builddir exported from
	tests/Makefile.am here instead of $PWD.
	* m4/utimbuf.m4: This macro has been removed from gnulib. Add it here
	for now; this will be replaced by gnulib's utimens module soon.

	* tests/test-lib.sh: Some versions of mktemp require a filename
	template; use one.  Provide a seq replacement on platforms which don't
	have seq.

	* configure.ac: Minimum versions required: automake-1.11.1,
	autoconf-2.65.

2010-02-21  Andreas Gruenbacher  <agruen@suse.de>

	* src/merge.c: When a hunk has fewer suffix than prefix context lines,
	try matching to the end of the file instead of doing a "greedy match":
	this allows to detect already-applied inserts at the end of the file.
	* tests/merge: Add test cases for this.

2010-02-17  Andreas Gruenbacher  <agruen@suse.de>

	* patch.man: Clarify the description of the -N option.

2010-01-15  Andreas Gruenbacher  <agruen@suse.de>

	* src/bestmatch.h, src/diffseq.h, src/inp.c, src/maketime.c,
	src/merge.c, src/partime.c, src/pch.c, src/util.c: No longer use
	"continue" as the only instruction in a loop body: at least one
	compiler chokes on this in combination with variable-length arrays
	as in src/bestmatch.h.

	* gl/lib/strndup.c: HAVE_DECL_STRNLEN is either 0 or 1 so we need
	to test for it with #if, not #ifdef.
	* gl/lib/xstrndup.c: Likewise for HAVE_DECL_STRNDUP.

2010-01-11  Andreas Gruenbacher  <agruen@suse.de>

	*  src/util.c (fetchname): Do not allow timestamps in Index lines.

2010-01-04  Andreas Gruenbacher  <agruen@suse.de>

	* src/util.c (create_backup_copy): Try to preserve the owning group
	in backup files.

2010-01-03  Matthew Burgess <matthew@linuxfromscratch.org>

	* tests/crlf-handling:  Skip another ed-dependent test.

2010-01-02  Andreas Gruenbacher  <agruen@suse.de>

	* src/bestmatch.h, src/common.h, src/diffseq.h, src/inp.c, src/inp.h,
	src/maketime.c, src/maketime.h, src/merge.c, src/partime.c,
	src/partime.h, src/patch.c, src/pch.c, src/pch.h, src/quotesys.c,
	src/util.c, src/util.h, src/version.c: Add year 2010 to copyright
	notice.  Replace the GPLv2 license template with the GPLv3 license
	template.

	* src/patch.c (main): Compare the input file's group ID with the
	effective group ID to determine if a chown() is necessary, not the
	effective user ID.

2010-01-01  Andreas Gruenbacher  <agruen@suse.de>

	* Makefile.in (LIBSRCS, LIBM4FILES): Add the missing files strnlen.c,
	strnlen.m4, and safe-read.m4.

2009-12-30  Andreas Gruenbacher  <agruen@suse.de>

	* patch.man: Clarify the description of the -F / --fuzz option.

	* NEWS: Version 2.6.1 released.

	* src/pch.c: coding style fix (syntactic).

2009-12-29  Andreas Gruenbacher  <agruen@suse.de>

	* src/patch.c (longopts, get_some_switches): Add an optional argument
	to the --merge option to choose the output formats for conflicts.
	* patch.man: Document the new optional argument of --merge.
	* src/merge.c (merge_hunk): Implement diff3-style conflicts.
	* src/common.h (conflict_style): This global variable determines the
	output format for conflicts.
	* tests/merge: Add test cases for the diff3 output format.

	* patch.man: Try to improve the documentation of patch's CRLF handling
	behavior.

2009-12-28  Andreas Gruenbacher  <agruen@suse.de>

	* tests/create-delete: Clean up a syntactic glitch.

	* src/pch.c: When the input files to diff have CRLF line endings, the
	'<' and '>' lines of normal-style diffs will have CRLF endings even
	when the patch itself has not been CRLF mangled.  Do not assume a
	mangled patch in this case.
	* tests/crlf-handling: Update test case to cover this case.

	* configure.ac (gl_FUNC_STRNDUP, gl_FUNC_STRNLEN): Add here.
	* gl/m4/strndup.m4 (gl_HEADER_STRING_H_DEFAULTS): Don't use gnulib's
	strings.h replacement for now, it is too complicated to add right now.
	* gl/lib/xstrndup.c: Instead of using gl_HEADER_STRING_H_DEFAULTS,
	declare strndup here on systems which don't have it.
	* gl/lib/strndup.c: Instead of using gl_HEADER_STRING_H_DEFAULTS,
	declare strnlen here on systems which don't have it.
	* gl/lib/strnlen.c: Import from gnulib.

	* Makefile.in (getopt.h, GETOPT_H): Generate getopt.h in the top-level
	directory if needed.
	(stdbool.h, STDBOOL_H): Likewise -- this should fix stdbool.h
	generation on platforms which don't provide this header.
	(argmatch.$(OBJEXT)): Add missing $(STDBOOL_H) dependency.

	* install-sh: Make executable.

2009-12-22  Andreas Gruenbacher  <agruen@suse.de>

	* src/version.c (copyright_string): Add year 2009.

	* src/pch.c (intuit_diff_type): Add some clarifying comments.

	* src/pch.c (intuit_diff_type): Fix regression introduced after patch
	2.5.9: when none of the filenames in the old, new, and index headers
	exists, patch chose the wrong filename (bug 28367).
	(maybe_reverse): Return if the patch looks reversed, not if this
	function toggled the reverse flag.
	* tests/filename-choice: New test case.
	* Makefile.in (TESTS): Add test case.

2009-11-24  Bert Wesarg <bert.wesarg@googlemail.com>

	* configure.ac: It looks like the . command does not pass the
	arguments to the update-version.sh script [on some platforms].  Invoke
	with sh instead.

2009-11-21  Peter Breitenlohner <peb@mppmu.mpg.de>

	* Makefile.in: Make the test suite work for a VPATH build.

2009-11-14  Andreas Gruenbacher  <agruen@suse.de>

	* update-version.sh: Platform compatibility fixes.

2009-11-12  Andreas Gruenbacher  <agruen@suse.de>

	* NEWS: Version 2.6 released.

2009-10-27  Andreas Gruenbacher  <agruen@suse.de>

	* patch.man: Fix typo (reported by Vytautas Šaltenis).

	* src/merge.c: Clarify the message when (part of) a hunk cannot be
	merged.
	* tests/merge: Adapt the test case.

2009-09-04  Andreas Gruenbacher  <agruen@suse.de>

	* Makefile.in (LIBSRCS, LIBHDRS, LIBM4FILES): Add the gnulib which
	were imported on 2009-06-05 here as well.

	* src/partime.c (main): Try to preserve the owning group of patched
	files.

2009-07-19  Andreas Gruenbacher  <agruen@suse.de>

	* gl/lib/full-write.c, gl/lib/safe-write.c, gl/lib/full-write.h,
	gl/lib/safe-write.h, gl/m4/safe-write.m4, gl/m4/ssize_t.m4:
	Import full_write() and its prerequesites from gnulib.
	* Makefile.in (LIBSRCS, LIBHDRS, LIBM4FILES): Add new files.
	Add new dependencies.
	* configure.ac (gl_SAFE_WRITE): Needef for full_write().
	* src/util.c: Include full-write.h.
	(copy_to_fd): use full_write() instead of write().

	* src/partime.c: The -m option hasn't been officially allocated yet.
	Use only the long form for now (--merge).

2009-06-15  Andreas Gruenbacher  <agruen@suse.de>

	* src/util.c (move_file): Don't fail when removing nonexistent
	files: this condition is already checked in maybe_reverse().

2009-06-05  Andreas Gruenbacher  <agruen@suse.de>

	* gl/lib/getopt_int.h, gl/lib/strndup.c, gl/m4/strndup.m4: Add
	some missing gnulib files.
	* Makefile.in (GETOPT_H): Include subdirectory (gl/lib/) when
	using the gnulib version.

	* src/patch.c: When sending output to stdout, use dup2 to redirect
	messages to stderr; simply assigning stderr to stdout doesn't work on
	some platforms.
	* gl/lib/dup2.c, gl/m4/dup2.m4: Import from gnulib.

	* gl/lib/rename.c, gl/m4/rename.m4: Import from gnulib for platforms
	like Mingw.

2009-05-12  Andreas Gruenbacher  <agruen@suse.de>

	* src/merge.c (locate_merge): Make sure to return a line number
	bigger than last_frozen_line.

	* src/patch.c (explicit_inname): New variable.
	(get_some_switches): Set to true when the filename to patch has been
	specified on the command line.
	(reinitialize_almost_everything): Do not reset the input filename
	between patches when it has been specified on the command line.
	* tests/inname: New test case.
	* Makefile.in: Add test case.

2009-04-11  Vincent Legoll <vincent.legoll@gmail.com>

	* src/patch.c (main): Always set patch_get to 0 unless PATCH_GET is
	set.
	* patch.man: Update accordingly.

2009-04-11  Andreas Gruenbacher  <agruen@suse.de>

	* update-version.sh, configure.ac, Makefile.in: Portability
	improvements.

2009-04-08  Andreas Gruenbacher  <agruen@suse.de>

	* src/patch.c (create_output_file): Add support for sending output
	to standard output.
	(main): Allow -o -.  Remove redundant check.
	* patch.man: Document the new use of -o.

	* src/pch.c (there_is_another_patch): Allow special characters in
	filenames read interactively.

	* src/util.c (fetchname): Don't forget to NUL terminate ptimestr.

2009-04-07  Andreas Gruenbacher  <agruen@suse.de>

	* src/util.c (file_id_hasher): Adapt to Gnulib type change.
	* Makefile.in: Fix out-of-tree builds.
	(dist): Optionally also create bzip2 and xz tarballs.
	* NEWS: Update.

	* patch.man: Replace "systems like DOS" with "Windows". Spelling.

	Preserve timestamps in reject files.
	* src/pch.c (p_timestr): New variable.
	(intuit_diff_type): Set p_timestr here through fetchname().
	(pch_timestr): New function.
	* src/pch.h (pch_timestr): Declare.
	* src/util.c (fetchname): Return the timestamp as string when asked to.
	* src/util.h (fetchname): Update declaration.
	* tests/preserve-c-function-names, tests/reject-format: Update.

2009-04-06  Andreas Gruenbacher  <agruen@suse.de>

	Fix the "patch would create" fix from 2009-03-28.
	* src/pch.c (maybe_reverse): New function.
	(intuit_diff_type): Move the check back here from
	there_is_another_patch(), but compute it using maybe_reverse().  If
	an input file name has been specified, do this check here as well.
	* src/patch.c (main): Only set outname if we are not skipping the
	patch.
	* src/inp.c (get_input_file): We may get here without a file to read
	as well now; don't abort in this case.
	* tests/create-delete: Add test cases covering the previously-broken
	code paths.

	* Makefile.in (MISC): Add config.guess and config.sub.

	* src/partime.c (parse_pattern_letter): Fix for timestamps with
	seconds > 59.5 from Christian Franke.

2009-04-05  Andreas Gruenbacher  <agruen@suse.de>

	* util.c (create_backup): We also need to create base directories
	with a --prefix without slashes and a filename with slashes. A
	--suffix cannot contain slashes, though.
	* merge.c (merge_hunk): Add missing outstate->zero_output = false.

	Move all source and header files into src/.
	* Makefile.in, tests/test-lib.sh, configure.ac: Update accordingly.
	Move all Gnulib files below gl/, and all other source and header
	files into src/.
	* Makefile.in, tests/test-lib.sh, configure.ac, autogen.sh: Update
	accordingly.
	* m4/st_mtim.m4: Remove (obsolete since 2009-03-28).

	Update to the latest version of Gnulib.
	* config.guess, config.sub, gl/lib/getopt.hin, gl/lib/mbrtowc.c,
	gl/lib/stripslash.c, gl/lib/verify.h, gl/lib/xstrndup.c,
	gl/lib/xstrndup.h, gl/m4/argmatch.m4, gl/m4/double-slash-root.m4,
	gl/m4/gettext.m4, gl/m4/inline.m4, gl/m4/minmax.m4,
	gl/m4/xstrndup.m4: New files.
	* gl/lib/argmatch.c, gl/lib/argmatch.h, gl/lib/backupfile.c,
	gl/lib/backupfile.h, gl/lib/basename.c, gl/lib/dirname.c,
	gl/lib/dirname.h, gl/lib/error.c, gl/lib/error.h, gl/lib/exitfail.c,
	gl/lib/exitfail.h, gl/lib/getopt.c, gl/lib/getopt1.c, gl/lib/gettext.h,
	gl/lib/hash.c, gl/lib/hash.h, gl/lib/malloc.c, gl/lib/memchr.c,
	gl/lib/quote.c, gl/lib/quote.h, gl/lib/quotearg.c, gl/lib/quotearg.h,
	gl/lib/realloc.c, gl/lib/strcasecmp.c, gl/lib/strncasecmp.c,
	gl/lib/unlocked-io.h, gl/lib/xalloc.h, gl/lib/xmalloc.c: Modified.
	* gl/m4/backupfile.m4, gl/m4/d-ino.m4, gl/m4/dirname.m4, gl/m4/dos.m4,
	gl/m4/error.m4, gl/m4/exitfail.m4, gl/m4/extensions.m4,
	gl/m4/getopt.m4, gl/m4/hash.m4, gl/m4/malloc.m4, gl/m4/mbrtowc.m4,
	gl/m4/mbstate_t.m4, gl/m4/memchr.m4, gl/m4/onceonly.m4, gl/m4/quote.m4,
	gl/m4/quotearg.m4, gl/m4/realloc.m4, gl/m4/stdbool.m4,
	gl/m4/unlocked-io.m4, gl/m4/utimbuf.m4, gl/m4/xalloc.m4: Likewise.
	* install-sh, mkinstalldirs: Likewise.
	* gl/lib/stdbool.hin: Renamed from gl/lib/stdbool_.h.
	* gl/lib/getopt.h: Removed (should be generated).
	* gl/lib/addext.c: Removed from Gnulib.

	Replace memory_fatal() with xalloc_die().  The FILESYSTEM_PREFIX_LEN()
	macro has been renamed to FILE_SYSTEM_PREFIX_LEN().
	* src/patch.c (main): Remove xalloc_fail_func (replaced by
	xalloc_die()).  Work around the missing addext() with
	find_backup_file_name() plus hacks.
	* src/util.c (create_backup, version_controller): The new versions of
	base_name() and dir_name() return malloc'ed buffers.  Adapt.
	* src/util.h: Replace memory_fatal() with xalloc_die().
	* src/pch.c: Don't leak memory with strlen (base_name (...)).

	* src/util.c (create_file): Add to_dir_known_to_exist argument and
	try to create parent directories when set and the create failed with
	ENOENT.
	(copy_file, create_backup_copy): Pass the new to_dir_known_to_exist
	argument through.
	(create_backup): Don't assume the target directory exists when making
	a backup copy.
	* src/util.h (create_file, copy_file): Change the declarations.
	* src/patch.c, src/pch.c, src/inp.c: In the calls to create_file() and
	copy_file(), assume the parent directory exists.
	* tests/unmodified-files: Test the create_backup() fix.

	* src/util.c (create_backup): The new dir_name() and base_name()
	functions are really counter productive.  Remove them and the bugs
	that keepeing them here as introduced.
	* tests/backup-prefix-suffix: Add more regression tests.

	* src/patch.c (locate_hunk): Revert to the original asymmetric hunk
	behavior (but only anchor hunks starting at line 0 to the start of the
	file): there is not enough reason to change the historic behavior.
	* src/merge.c (locate_merge): Add similar asymmetric hunk check here.
	* tests/asymmetric-hunks: Update accordingly.
	* patch.man: Document the asymmetric hunk behavior.
	* NEWS: Update.

	Copyright notice updates.
	* README, AUTHORS: Updates.

	* patch.man: Document that merging can be slow.
	* tests/test-lib.sh: Also unset QUOTING_STYLE.

2009-04-04  Andreas Gruenbacher  <agruen@suse.de>

	* pch.c (another_hunk): Add (back) the line number ranges to the
	debug output.
	* merge.c (merge_hunk): Likewise.
	(locate_merge): Add a note about the algorithm's requirements.
	* util.c (create_backup): Split from move_file.  New LEAVE_ORIGINAL
	argument for copying instead of renaming.  Don't fail when rename
	fails with errno == EXDEV; copy and unlink in that case instead.
	(copy_file): Add debug message.
	* util.h: Move including <utime.h> etc. here from patch.c.
	(create_backup): Declare.
	* patch.c (main): Create backup files even for files which did not
	actually change; some users of patch rely on the presence of backup
	files when patch says "patching file".
	* tests/unmodified-files: Test the patch.c change.  (The EXDEV fix in
	create_mackup() was tested manually.)
	* util.c (copy_to_fd, ask): The read() return type is ssize_t.

2009-04-03  Andreas Gruenbacher  <agruen@suse.de>

	* patch.man: Document the -m or --merge option.  Some minor other
	changes.
	* NEWS: Document the asymmetric hunk behavior and the -m or --merge
	option.
	* merge.c (locate_merge): Include the number of changes in the debug
	message.
	(print_linerange): New function.
	(merge_result): No longer print line offsets: without exact matches,
	line numbers are less meaningful.  Output the entire messages here.
	(merge_hunk): Be silent when merging exact matches unless in
	--verbose mode.
	* tests/merge: Add another interesting test case.

	* tests/test-lib.sh: Add have_ed function for checking if ed is
	available.
	* tests/crlf-handling, tests/need-filename: Check for ed and skip the
	ed related tests if we don't have it.
	* tests/merge: Use sed instead of ed: sed is more readily available.

	* patch.c (locate_hunk): If a hunk starts at a line > 1, it obviously
	is not from the start of the file.
	* tests/asymmetric-hunks: Add tests for all possible cases.

2009-04-02  Andreas Gruenbacher  <agruen@suse.de>

	* patch.c (locate_hunk): Revert the assymmetric hunk fix from
	2009-03-29.  Instead, allow such hunks to apply only when no
	more context remains.

	* patch.c (main): Restructure to get rid of some code duplication.
	(copy_till, similar): Export these functions.
	* common.h (struct outstate, in_offset, out_offset,
	last_frozen_line): Move here from patch.c.
	(apply_hunk, copy_till, similar): Declare here.

	Simple merge support:
	* configure.ac (ENABLE_MERGE): New --disable-merge option.
	* patch.c (merge): New variable.
	(main): New -m and --merge options.  When in merge mode, don't try
	to reverse patches, and don't try to apply with fuzz.
	* common.h (merge_hunk): Declare function.
	* merge.c: New file containing all the merge code.
	* tests/merge: New test case.
	* Makefile.in (SRCS): Add merge.c.
	(OBJS): Add merge.$(OBJEXT) when merge support is enabled.
	(TESTS): Add test case.
	(COMPILE): Define ENABLE_MERGE when merge support is enabled.

	Locate hunks to merge more intelligently:
	* bestmatch.h: Shortest Edit Sequence algorithm.
	* merge.c (locate_merge, count_fuzz_lines): New functions.
	(merge_hunk): Replace simple guessing with locate_merge().
	* Makefile.in (HDRS): Add bestmatch.h.
	* tests/merge: Only minor improvements up to now.

	* diffseq.h: New file (Gnulib compareseq algorithm).
	* minmax.h: New file (Gnulib MIN and MAX macros).
	* Makefile.in (HDRS): Add diffseq.h and minmax.h.

	* COPYING: Update to GPL version 3 because of diffseq.h.

	* diffseq.h: When an EQUAL_IDX macro is defined, use that instead
	of EQUAL.  This macro takes vector indexes instead of elements as
	arguments.

	Better merge support:
	* patch.c, common.h (apply_hunk): Make static again.
	* merge.c (compute_changes): New function for computing the
	difference between lines in a hunk and lines in the input file.
	(merge_result): We may have more than one result per hunk now.
	(merge_hunk): Merge the hunk with the compute_changes() result.
	* tests/merge: Better results now.

	* merge.c: Add license header.

	* merge.c (locate_merge): The number of changes allowed permits a
	higher maximum merge position (max_where).
	* tests/merge: Add a test for this case.

	* merge.c (merge_hunk): Add two missing checks that were leading into
	failed assertions.
	* tests/merge: Add test cases for each of these checks.

	* Makefile.in (install, uninstall): DESTDIR specifies a prefix to
	the root directory to install into.
	(installdirs): Merge with install.

2009-04-01  Andreas Gruenbacher  <agruen@suse.de>

	* tests/test-lib.sh: When $GDB is set, run patch in gdbserver
	for debugging.
	* pch.c (another_hunk): Make the debug output easier to read.

2009-03-31  Andreas Gruenbacher  <agruen@suse.de>

	* patch.c: Split last_offset into in_offset and out_offset and
	count line numbers properly.
	* tests/line-numbers: Without the fixes, this test case goes
	horribly wrong.
	* Makefile.in (TESTS): Add test case.

2009-03-30  Jim Meyering  <meyering@redhat.com>

	tests: accommodate ls' "alternate access control method" indicator
	ls can output an additional byte after a file's permissions string,
	e.g., rather than "rwxr--r-- ..." it can output "rwxr--r--+ ..."
	or "rwxr--r--. ..." to indicate the presence of an ACL.
	* tests/create-delete: Adjust sed filter to accommodate that.
	* tests/preserve-mode-and-timestamp: Likewise.

2009-03-30  Andreas Gruenbacher  <agruen@suse.de>

	* tests/test-lib.sh: Unset environment variables that influence
	the behavior of patch.
	* util.c (move_file): Add debug message when files have been seen
	already.  Fix leftover "empty uneadable" debug message.

	* patch.c (main): Print newline earlier.
	* util.c (copy_file): Add debug message.

2009-03-29  Andreas Gruenbacher  <agruen@suse.de>

	* patch.c (locate_hunk): Hunks that have fewer or more lines of
	context at the beginning than at the end can match anywhere; the
	assumption that this can only occur at the beginning or end of the
	file is wrong. Remove those checks.
	* tests/asymmetric-hunks: New test case.
	* Makefile.in (TESTS): Add test case.

	* util.c (move_file): Create backup files of nonexistent files with
	the default mode instead of mode 0: files with mode 0 cause too many
	problems with applications which do not expect unreadable files.
	* tests/create-delete: Test for this.

	* Makefile.in (BROKEN_TESTS): Test cases which fail.

2009-03-28  Andreas Gruenbacher  <agruen@suse.de>

	* pch.c (intuit_diff_type): Rename need_filename argument to
	need_header.  Omit superfluous "missing header" warnings.

	When remembering files including timestamps, we need to update the
	timestamps after appending to a file.  This causes problems on some
	systems where the timestamps returned by fstat() after appending are
	not up to date, yes.  We only remember timestamps as a compatibility
	hack with non-POSIX systems that do not have unique inode numbers;
	drop this hack instead.
	* timespec.h, m4/timespec.m4: Remove.
	* util.c: Remove timespec.h and all uses of struct timespec.
	(append_to_file): Remove REMEMBER argument; no need to update known
	files anymore.
	* util.h (append_to_file): Update definition.
	* Makefile.in: Remove timespec.h and m4/timespec.m4.

	* common.h (origsuff): New variable.
	* patch.c (main): Remember when -z was used.
	* util.c (contains_slash): New function.
	(move_file): Enforce simple backup mode and compute the backup file
	name here if -B, -Y, or -z is used.  Fix the case where -B or -Y is
	combined with -z.
	* patch.man: Document this change.
	* tests/backup-prefix-suffix: New test case.
	* Makefile.in (TESTS): Add test case.

	* tests/munged-context-format: New test case.
	* Makefile.in (TESTS): Add test case.

	* util.c (vsay): New function for use in say(), etc.
	(ok_to_reverse): Use vsay() here instead of fprintf() to ensure
	flushing.

	* pch.c (there_is_another_patch): Move the "patch would create" test
	here from intuit_diff_type() after asking for the filename to patch.
	* inp.c (get_input_file): No need to report when the file is missing;
	this is done in there_is_another_patch() already.
	* patch.c (main): No need to report when a patch attempts to create
	an exiting file, either.

2009-03-25  Andreas Gruenbacher  <agruen@suse.de>

	* patch.c (main): Avoid replacing files when nothing has changed.
	* tests/unmodified-files: New test case.
	* Makefile.in (TESTS): Add test case.

	* patch.c (main): New apply_empty_patch variable. When applying an
	empty patch to a file and -o is given, copy the input file to the
	output file.

2009-03-24  Andreas Gruenbacher  <agruen@suse.de>

	* patch.c (abort_hunk_unified, abort_hunk_context): Preserve
	Index lines in reject files as well.
	* tests/reject-format: Test this change.

	* configure.ac (TEST_SHELL): New substitution.
	* Makefile.in (TEST_SHELL): New variable.
	(HAVE__BOOL): New variable.
	(hash.$(OBJEXT)): Add $(STDBOOL_H) dependency.
	* tests/test-lib.sh: Use expr for arithmetic operations. Check for
	working "echo -n" and BASH_LINENO.  Replace printf with echo.
	* tests/preserve-mode-and-timestamp: Ignore leading "+" in ls output.
	* tests: Remove !shebang line from tests and make them non-executable.
	Replace printf with echo.

2009-03-23  Andreas Gruenbacher  <agruen@suse.de>

	* patch.c (intuit_diff_type): When looking for an ed or normal
	patch, don't look for filename headers.  (Those formats don't
	have any.)
	* pch.c (there_is_another_patch): Don't suggest to use -p with
	normal format diffs for the same reason.

2009-03-22  Andreas Gruenbacher  <agruen@suse.de>

	* NEWS: Update for alpha release.

	* patch.c (main): Always initialize the known files table.
	Move new reject files into place; append to known ones.
	* util.c (file_already_seen): Export.
	(move_file): Remember all files, not only backup files.
	(append_to_file): When asked to remember a file, remember
	the state *after* appending. (The timestamps will change!)
	* tests/remember-reject-files: New test case.
	* Makefile.in (TESTS): Add test case.

	* common.h (no_strip_trailing_cr): New variable.
	* patch.c: Use no_strip_trailing_cr.  Option --binary no longer
	a no-op on POSIX systems.
	* patch.man: Document change of --binary.
	* pch.c (there_is_another_patch): Check no_strip_trailing_cr.
	* tests/crlf-handling: Add --binary tests here.

	* patch.c (apply_hunk): Use fputs() in simple fprintf()
	situations.

	* patch.c (main): Require filename in patch if none specified on
	the command line and posixly_correct is false.
	* pch.c (intuit_diff_type): While we still don't have a filename,
	don't look for hunks.
	(there_is_another_patch): Pass need_filename through.
	* tests/need-filename: New test case.
	* Makefile.in (TESTS): Add test case.

	* pch.c (intuit_diff_type): Check for garbage after what looks
	like a normal format command.
	* tests/normal-garbage: New test case.
	* Makefile.in (TESTS): Add test case.

	* Makefile.in (bindir): Define as @bindir@.
	(DISTFILES_CLEAN): Move DISTFILES here which must not be remade by
	the dist target.
	(MISC): Add missing tests/test-lib.sh and update-version.sh.
	(check, $(TESTS)): Make each test depend on all so that they can be
	run individually.
	(maintainer-clean): Also remove patch-*.tar.gz and patch-*.tar.gz.sig.
	(dist): Add PV directory level.  Add reminder to self how to upload.
	* configure.ac: Silence "missing datarootdir" warning.

	* tests/crlf-handling: Add test for "diff -p" context with a CRLF
	ine ending.

2009-03-21  Andreas Gruenbacher  <agruen@suse.de>

	* patch.c (main): With -r, instead of moving the global reject
	file into place, copy the first reject into the file, and
	append all the rest.  Discard rejects with -r -.
	* patch.man: Document the latter.
	* util.c (copy_to_fd): New function.
	(copy_file): Use that.
	(append_to_file): New function.
	* util.h (append_to_file): Add function declaration.
	* tests/global-reject-files: New test case.
	* Makefile.in (TESTS): Add test case.

	* patch.man: Minor fix.

	* pch.c (another_hunk, pch_swap): Always add the '^' hunk end
	marker: apply_hunk() and abort_hunk_unified() rely on it.
	(pch_char): Explain when this returns '\n'.
	* util.c: Remove unused include <version.h>.

2009-03-20  Andreas Gruenbacher  <agruen@suse.de>

	* patch.c: New option --reject-format=FORMAT.
	(abort_hunk_context): Rename from abort_hunk().
	(abort_hunk_unified, abort_hunk, mangled_patch,
	print_unidiff_range): New functions.
	* patch.man: Document this.
	* pch.c, pch.h (pch_normalize): New function.
	* tests/reject-format: New test case.
	* Makefile.in (TESTS): Add test case.
	* tests/preserve-c-function-names: Update.

	* pch.c (p_name): New variable.
	(intuit_diff_type): Save the old, new, and index filenames.
	(pch_char): Return either of the saved filenames.
	* pch.h: Move enum nametype here from pch.c.  Declare pch_name().
	* patch.c (abort_hunk, abort_hunk_unified, abort_hunk_context):
	New HEADER and REVERSE arguments.
	(print_header_line): New function.
	(abort_hunk_unified, abort_hunk_context): Use it.
	* tests/corrupt-reject-files, tests/preserve-c-function-names,
	tests/reject-format: Update.

	* patch.c (main): No longer set reject file modes to the modes of the
	files they are assiciated with: the previous behavior is inconsistent
	with global reject files (-r), which are not associated with any
	particular file.
	* tests/preserve-mode-and-timestamp: New test case.
	* Makefile.in (TESTS): Add test case.

	* Makefile.in (DISTFILES): Add the files from DISTFILES_M4,
	DISTFILES_PC, DISTFILES_PC_DJGPP.
	(DISTFILES_M4, DISTFILES_PC, DISTFILES_PC_DJGPP): Remove.
	(distclean): Also remove config.hin~ and autom4te.cache/.
	(maintainer-clean): Also remove aclocal.m4, config.hin, configure.
	(dist): Make work for DISTFILES in subdirectories.  Normalize and
	sort DISTFILES.

	* Makefile.in (MISC): Add VERSION.
	(FORCE): New target.
	(VERSION): Recompute automatically from repository.
	(configure): Depend on VERSION.  Regenerate with --force: autoconf
	does not recognize the dependency between VERSION and ocnfigure.
	(config.hin): Regenerate with --force.
	(maintainer-clean): Also remove VERSION.
	* configure.ac: Compute PACKAGE_VERSION from repository.
	* update-version.sh: New file.

	* README-alpha: New file.
	* Makefile.in (dist): Add README-alpha when appropriate.

	* Makefile.in (M4FILES): Rename from ACINCLUDE_INPUTS.
	(aclocal.m4): Recompute with aclocal.

	* tests/test-lib.sh: Add library for simple test scripts.
	* tests/crlf-handling, tests/remember-backup-files: New test cases.
	* Makefile.in (TESTS): New variable.  Add test cases.
	(check): Replace the dummy test target with running all TESTS.

	* pch.c, pch.h (pch_c_function): New function.
	* pch.c (p_c_function): New variable.
	(another_hunk): Preserve the "diff -p" output.
	* patch.c (abort_hunk): Use pch_c_function().
	* tests/preserve-c-function-names: New test case.
	* Makefile.in (TESTS): Add test case.

	* util.c (savebuf): Return NULL if size == 0.
	* pch.c (another_hunk): Check size for size != 0 before checking
	savebuf()'s return value.
	* tests/no-newline-triggers-assert: New test case.
	* Makefile.in (TESTS): Add test case.

	* tests/corrupt-reject-files: new test case for Jim Meyering's
	2007-08-26 fix.
	* Makefile.in (TESTS): Add test case.

2009-03-19  Andreas Gruenbacher  <agruen@suse.de>

	Imported from Paul Eggert's working directory:
	* exitfail.c, exitfail, m4/exitfail.m4: Import from gnulib.
	* hash.c, hash.h, m4/hash.m4: Likewise.
	* m4/extensions.m4: Likewise.
	* timespec.h, m4/timespec.m4: Likewise.
	* m4/st_mtim.m4: New file.
	* configure.ac: Update.
	* common.h: Include <limits.h> unconditionally.  Include <stdint.h>
	if we have it.
	* inp.c (plan_b, ifetch): Remove unnecessary casts.
	* maketime.c, partime.c: Include <limits.h>, <stdlib.h>, <time.h>
	unconditionally.  Convert from K&R to ANSI C.
	* maketime.h, partime.h: Convert from K&R to ANSI C.
	* pch.c (p_indent, pget_line, intuit_diff_type): Use size_t for
	indents.
	* util.c: Assume we have vfprintf().
	(NUM_SIGS): Cast to int in.
	(fatal_exit_handler): Replace obsolescent AC_RETSIGTYPE.
	* Various files: Update copyright notices.

2007-08-26  Jim Meyering  <jim@meyering.net>

	* pch.c (another_hunk): Avoid an off-by-one error that would
	result in NUL bytes in .rej files.

2004-07-21  Paul Eggert  <eggert@twinsun.com>

	* Makefile.in (SRCS): Move hash.c here from LIBSRCS.
	(exitfail.$(OBJEXT), patch.$(OBJEXT), xmalloc.$(OBJEXT)):
	Depend on exitfail.h.
	(hash.$(OBJEXT), util.$(OBJEXT)): Depend on hash.h.
	* util.c: Whitespace cleanup in file_id.

2004-07-19  Stepan Kasal  <kasal@ucw.cz>

	* pch.c (get_ed_command_letter): Allow commands without address.

2003-11-10  Manu B  <manubee@users.sourceforge.net>

	Trivial change to port to mingw, which declares mkdir in unistd.h.
	* m4/mkdir.m4 (PATCH_FUNC_MKDIR_TAKES_ONE_ARG): Include unistd.h.
	* common.h (mkdir): Define after including unistd.h.

2003-09-11  Paul Eggert  <eggert@twinsun.com>

	* pch.c (do_ed_script): Adjust to copy_file signature change.

	* Makefile.in (STDBOOL_H): New macro.  All uses of @STDBOOL_H@ changed.
	(SRCS): Add exitfail.c.
	(OBJS): Add exitfail.$(OBJEXT).
	(HDRS): Add exitfail.h.
	(stdbool.h): Use $@, as gnulib now suggests.
	(ACINCLUDE_INPUTS): Add exitfail.m4, extensions.m4.
	* common.h: Include <string.h>, <stdlib.h> unconditionally.
	* configure.ac (gl_USE_SYSTEM_EXTENSIONS): Use this instead
	of AC_GNU_SOURCE.
	(gl_EXITFAIL): Add.
	* patch.c: Include exitfail.h.
	(main): Set exit_failure, not xalloc_exit_failure.

	* inp.c (get_input_file): Clear cs if dry run.

	* util.c (fetchname): Handle missing timestamps better.

	* Makefile.in (LIBSRCS): Add hash.c.
	(OBJS): Add hash.$(OBJEXT).
	(HDRS): Add hash.h.
	(MISC): Add timespec.h.
	(ACINCLUDE_INPUTS): Add hash.m4, st_mtim.m4, timespec.m4
	(util.$(OBJEXT): Depend on timespec.h.
	* configure.ac (gl_HASH, gl_TIMESPEC): Add.
	* patch.c (spew_output): New output arg, to contain status of output
	file.
	(main): Use it to get status of output file, and pass this to
	move_file as needed.  Initialize hash table.
	* util.c (file_id): New type.
	(file_id_hasher, file_id_comparator, init_backup_hash_table,
	insert_file, file_already_seen): New functions.
	(file_id_table): New var.
	(move_file): New arg FROMST; all uses changed.
	Do not backup a file that's already been patched.
	Keep track of files that have been patched.
	(copy_file): New arg TOST; all uses changed.
	* util.h (copy_file, move_file): Adjust decls as per above.
	(init_backup_hash_table): New decl.


2003-07-05  Paul Eggert  <eggert@twinsun.com>

	* Makefile.in (check): Add a trivial check that "patch --help" works.
	From a suggestion by Ed Avis.

2003-07-02  Paul Eggert  <eggert@twinsun.com>

	* pch.c (intuit_diff_type): If a unified-diff header line contains
	trailing CR, strip CR from each body line.  This corrects a bug
	introduced in the 2003-05-18 patch.  Bug reported by Andreas
	Gruenbacher.

	* mkdir.c, rmdir.c, m4/rmdir.m4: Remove; we no longer
	need to worry about ancient hosts that lack these functions.

	* addext.c, backupfile.c, backupfile.h, dirname.h, m4/backupfile.m4,
	m4/onceonly.m4, m4/quote.m4, malloc.c, quote,c, quote.h, realloc.c,
	strcasecmp.c, xalloc.h, xmalloc.c: Sync with gnulib.
	* stdbool_.h: Renamed from stdbool.h.in; all uses changed.
	This renaming is imported from gnulib.
	* m4/strcase.m4: New file, imported from gnulib.

	* Makefile.in (LIBSRCS): Remove mkdir.c and rmdir.c.
	(stdbool.h): Put output into temporary file and then rename it;
	this change is imported from gnulib.
	(mostlyclean): Clean stdbool.h-t too.
	(ACINCLUDE_INPUTS): Remove rmdir.m4.  Add strcase.m4.
	* configure.ac (gl_FUNC_RMDIR): Remove.
	(jm_PREREQ_ADDEXT): Remove; now down by gl_BACKUPFILE.
	(gl_STRCASE, gl_XALLOC): Add.
	(AC_REPLACE_FUNCS): Remove mkdir, strcasecmp.

2003-05-20  Paul Eggert  <eggert@twinsun.com>

	* NEWS, configure.ac (AC_INIT): Version 2.5.9 released.

	* Makefile.in (HDRS): Add gettext.h.

	Use bool, not int, for booleans.

	* pch.c (pch_says_nonexistent): Returns int, not bool.

	* configure.ac: Add AM_STDBOOL_H.

	* Makefile.in (MISC): Add stdbool.h.in.
	(stdbool.h): New rule.
	(ACINCLUDE_INPUTS): Add stdbool.m4.
	(mostlyclean): Remove stdbool.h.
	(COMMON): New macro; use it instead of common.h for dependencies.

	* common.h: Include <stdbool.h>.
	Remove TRUE, FALSE, bool.  All uses changed to standard names.

	* common.h (reverse, set_time, set_utc):
	Use bool, not int, for booleans.
	* pch.c (p_strip_trailing_cr, p_pass_comments_through,
	prefix_components, pget_line, re_patch,
	there_is_another_patch, intuit_diff_type, scan_linenum,
	another_hunk, pget_line, pch_timestamp): Likewise.
	* inp.h (ifetch): Likewise.
	* util.c (move_file, version_controller, version_get, ok_to_reverse,
	set_signals): Likewise.
	* inp.c (report_revision, get_input_file, plan_a, plan_b, ifetch):
	Likewise.
	* util.h (ok_to_reverse, version_controller, version_get,
	move_file, set_signals): Likewise.
	* pch.h (another_hunk, pch_says_nonexistent, pch_timestamp):
	Likewise.
	* patch.c (struct outstate, numeric_string, make_backups,
	backup_if_mismatch, remove_empty_files,
	reverse_flag_specified, main, reinitialize_almost_everything,
	get_some_switches, apply_hunk, init_output, copy_till):
	Likewise.

2003-05-18  Paul Eggert  <eggert@twinsun.com>

	* pch.c (p_pass_comments_through): New var.
	(pget_line): Accept new arg for pass_comments_through.
	All callers changed.
	(there_is_another_patch): Do not suggest -p for ed diffs.
	(intuit_diff_type): Check ed command for correct syntax.
	Do not set p_strip_trailing_cr merely because a -p line contains a CR.
	(get_ed_command_letter): New function.
	(do_ed_script): Use it.  Do not treat '#' data lines as comments in ed
	scripts.

	* util.c (move_file):
	Don't assume that when 'rename(A,B)' succeeds then A no
	longer exists.  This is not true of POSIX 1003.1-2001 rename when A
	and B are links to the same file.
	(fetchname): Fix test for file names with internal spaces.

	* version.c: Don't include patchlevel.h.
	(version): Use PACKAGE_NAME and PACKAGE_VERSION instead of obsolete
	PROGRAM_NAME and PATCH_VERSION.
	(copyright_string): Bump to 2003.

	* common.h (FILESYSTEM_PREFIX_LEN, ISSLASH):
	Remove; now done by 'configure'.
	(PROGRAM_NAME): Remove; now done by 'configure' as PACKAGE_NAME.

	* patch.c: Do not include <exitfail.h>.
	(main): Set xalloc_exit_failure, not exit_failure.
	Add "&& !skip_rest_of_patch" when deciding to continue ed scripts.
	(option_help): Use PACKAGE_BUGREPORT rather than hardcoding.

	* configure.ac (AC_PREREQ): Bump to 2.57.
	(AC_GNU_SOURCE): Add, early on.
	(gl_BACKUPFILE, gl_DIRNAME, gl_ERROR, gl_FUNC_MEMCHR, gl_FUNC_RMDIR,
	gl_GETOPT, gl_PREREQ_XMALLOC, gl_QUOTE, gl_QUOTEARG): Add.
	(jm_PREREQ_ADDEXT): Add, with definition.
	(jm_PREREQ_DIRNAME, jm_PREREQ_ERROR, jm_PREREQ_MEMCHR,
	jm_PREREQ_QUOTEARG): Remove.
	(AC_REPLACE_FUNCS): Remove memchr, rename, rmdir).
	(jm_FUNC_GLIBC_UNLOCKED_IO, jm_AC_DOS): Add.
	(jm_CHECK_TYPE_STRUCT_DIRENT_D_INO): Do not call directly.
	(AC_OUTPUT): Use new style, with AC_CONFIG_FILES.

	Update to current CVS gnulib.

	* exitfail.c, exitfail.h, patchlevel.h, rename.c, m4/c-bs-a.m4,
	m4/jm-glibc-io.m4, m4/prereq.m4: Remove.
	* m4/backupfile.m4, m4/dirname.m4, m4/dos.m4, m4/getopt.m4,
	m4/memchr.m4, m4/onceonly.m4, m4/quote.m4, m4/quotearg.m4,
	m4/rmdir.m4, m4/unlocked-io.m4, m4/xalloc.m4: New files.
	* Makefile.in (LIBSRCS): Move error.c here from SRCS.
	Remove rename.c.
	(OBJS): Remove error.$(OBJEXT).
	(HDRS): Remove exitfail.h, patchlevel.h.
	(ACINCLUDE_INPUTS): Remove c-bs-a.m4, jm-glibc-io.m4, prereq.m4.
	Add backupfile.m4, dirname.m4, dos.m4, getopt.m4, memchr.m4,
	onceonly.m4, quote.m4, quotearg.m4, rmdir.m4, unlocked-io.m4,
	xalloc.m4.
	(patchlevel.h): Remove.  All uses removed.
	(argmatch.$(OBJEXT), error.$(OBJEXT), quotesys.$(OBJEXT)),
	xmalloc.$(OBJEXT)): Depend on gettext.h.
	(dirname.$(OBJEXT), quote.$(OBJEXT), strncasecmp.$(OBJEXT)): New rules.
	(patch.$(OBJEXT), xmalloc.$(OBJEXT)): Remove exitfail.h.
	(rename.$(OBJEXT)): Remove.
	(version.$(OBJEXT)): Remove util.h.
	(xmalloc.$(OBJEXT)): Add error.h.

2002-11-23  Paul Eggert  <eggert@twinsun.com>

	* patch.c (main): Don't check for zero-sized file after 'ed'
	when skipping patch.  From Michael Fedrowitz.

2002-06-03  Paul Eggert  <eggert@twinsun.com>

	* configure.ac (AC_OUTPUT): Use new form, with AC_CONFIG_FILES,
	instead of obsolescent form.  Patch from Art Haas.

	* pch.c (intuit_diff_type): Do not warn about trailing white space
	after Prereq: word.  Bug reported by Mike Castle.

2002-06-02  Paul Eggert  <eggert@twinsun.com>

	* NEWS, configure.ac (AC_INIT): Version 2.5.8 released.

	* README: POSIX.2 -> POSIX.
	* inp.c (report_revision): Don't modify 'revision', since
	it gets freed later.  Bug reported by Mike Castle.

2002-05-30  Paul Eggert  <eggert@twinsun.com>

	* NEWS, configure.ac (AC_INIT): Version 2.5.7 released.

	* Makefile.in (MISC): Remove README-alpha.
	(patchlevel.h): Depend on configure, not configure.ac.

	* INSTALL: Upgrade to Autoconf 2.53 version.

2002-05-28  Paul Eggert  <eggert@twinsun.com>

	* patch.c (end_defined, apply_hunk): Output #endif without
	the comment, as POSIX 1003.1-2001 requires.

	* pch.c (there_is_another_patch): Flush stderr after perror.

	* NEWS, configure.ac (AC_INIT): Version 2.5.6 released.

	* strcasecmp.c, strncasecmp.c: New files, taken from fileutils.
	* config.guess, config.sub: Remove.
	* Makefile.in (LIBSRCS): Add strcasecmp.c, strncasecmp.c.
	(MISC): Remove config.guess, config.sub.

	The code already assumes C89 or better, so remove K&R stuff.
	* common.h (volatile): Remove.
	(GENERIC_OBJECT): Remove; all uses changed to 'void'.
	(PARAMS): Remove; all uses changed to prototypes.
	* configure.ac (AC_PROG_CC_STDC): Add.
	* util.c (vararg_start): Remove.  All uses changed to va_start.
	Always include <stdarg.h>.

	* configure.ac (AC_CANONICAL_HOST): Remove.
	(AC_REPLACE_FUNCS): Add strncasecmp.
	(AC_CHECK_DECLS): Add mktemp.

	* patch.c (main): Remove useless prototype decl.
	(mktemp): Don't declare if HAVE_DECL_MKTEMP || defined mktemp.
	(make_temp): Now accepts char, not int.

2002-05-26  Paul Eggert  <eggert@twinsun.com>

	* patch.c (not_defined): Prepend newline.  All uses changed.
	(apply_hunk): Fix bug: -D was outputting #ifdef when it should
	have been outputting #ifndef.  Bug report and partial fix by
	Jason Short.

	* pch.c (intuit_diff_type): When reading an ed diff, don't use
	indent and trailing-CR-ness of "." line; instead, use that of the
	command.  Bug reported by Anthony Towns; partial fix by Michael
	Fedrowitz.
	(intuit_diff_type): If the index line exists, don't report a
	missing header.  Fix by Chip Salzenberg.

2002-05-26  Alessandro Rubini  <rubini@gnu.org>

	* patch.c (locate_hunk): Fixed updating of last_offset.

2002-05-25  Paul Eggert  <eggert@twinsun.com>

	* NEWS, README: Diffutils doc is up to date now.
	Bug reporting address is now <bug-patch@gnu.org>.
	* README: Describe '--disable-largefile'.

	* NEWS-alpha, dirname.c, dirname.h, exitfail.c, exitfail.h,
	quote.c, quote.h, unlocked-io.h: New files, taken from diffutils
	and fileutils.

	* argmatch.c: [STDC_HEADERS]: Include stdlib.h, for 'exit'.

	* addext.c, argmatch.c, argmatch.h, backupfile.c, basename.c:
	Update from diffutils and fileutils.

	* ansi2knr.1, ansi2knr.c: Remove.

	* common.h: HAVE_SETMODE && O_BINARY -> HAVE_SETMODE_DOS.
	* patch.c (usage): Likewise.
	* pch.c (open_patch_file): Likewise.

	* configure.ac: Renamed from configure.in.  Add copyright notice.
	(AC_PREREQ): Bump to 2.53.
	(AC_INIT): Use 2.5x style.
	(AC_CONFIG_SRCDIR): Add.
	(PACKAGE, VERSION): Remove.
	(AC_C_PROTOTYPES): Use this instead of AM_C_PROTOTYPES.
	(jm_CHECK_TYPE_STRUCT_UTIMBUF): Use this instead of jm_STRUCT_UTIMBUF.
	(jm_PREREQ_ADDEXT, jm_PREREQ_DIRNAME, jm_PREREQ_ERROR,
	jm_PREREQ_MEMCHR, jm_PREREQ_QUOTEARG): Add.
	(AC_CHECK_DECLS): Add free, getenv, malloc.
	(AC_CHECK_FUNCS): Remove setmode.
	(AC_FUNC_SETMODE_DOS): Add.
	(jm_CHECK_TYPE_STRUCT_DIRENT_D_INO): Use this instead of
	jm_STRUCT_DIRENT_D_INO.

	* Makefile.in (OBJEXT): New var.
	(PACKAGE_NAME): Renamed from PACKAGE.  All uses changed.
	(PACKAGE_VERSION): Renamed from VERSION.  All uses changed.
	(U): Remove.  All uses of "$U.o" changed to ".$(OBJEXT)".
	(LIBSRCS): REmove getopt.c getopt1.c.  Add mkdir.c, rmdir.c.
	(SRCS): Add dirname.c, exitfail.c, getopt.c, getopt1.c, quote.c.
	Remove mkdir.c.
	(OBJS): Keep in sync with SRCS.
	(HDRS): Remove basename.h.
	Add dirname.h, exitfail.h, quote.h, unlocked-io.h.
	(MISC, configure, config.hin, patchlevel.h):
	configure.ac renamed from configure.in.
	(MISC): Add README-alpha. Remove ansi2knr.1, ansi2knr.c.
	(.c.$(OBJEXT)): Renamed from .c.o.
	(ACINCLUDE_INPUTS): Add c-bs-a.m4, error.m4, jm-glibc-io.m4,
	mbstate_t.m4, mkdir.m4, mbrtowc.m4, prereq.m4, setmode.m4.
	Remove ccstdc.m4, inttypes_h.m4, largefile.m4, protos.m4.
	(mostlyclean): Don't clean ansi2knr.
	(ansi2knr.o, ansi2knr): Remove.
	Redo dependencies.

	* patch.c: Include <exitfail.h>.
	(main): Initialize exit_failure.

	* patch.man: Update copyright notice.

	* pch.c, util.c: Include <dirname.h>, not <basename.h>.

	* version.c (copyright_string): Update copyright notice.

2002-02-17  Paul Eggert  <eggert@twinsun.com>

	* partime.c (parse_pattern_letter): Don't overrun buffer if it
	contains only alphanumerics.  Bug reported by Winni
	<Winni470@gmx.net>.

2001-07-28  Paul Eggert  <eggert@sic.twinsun.com>

	* util.c (fetchname), NEWS:
	Allow file names with internal spaces, so long as they
	don't contain tabs.

	* pch.c (intuit_diff_type): Do not allow Prereq with multiple words.

	* configure.in (AC_PREREQ): Bump to 2.50.
	(AC_CHECK_FUNCS): Remove fseeko.
	(AC_FUNC_FSEEKO): Add.
	* Makefile.in (ACINCLUDE_INPUTS):
	Remove largefile.m4; no longer needed with Autoconf 2.50.

2001-02-07  "Tony E. Bennett" <tbennett@nvidia.com>

	* util.c (PERFORCE_CO): New var.
	(version_controller): Support Perforce.
	* patch.man: Document this.

2000-06-30  Paul Eggert  <eggert@sic.twinsun.com>

	* patch.man: Ignore comment lines.

	* NEWS, pch.c: Ignore lines beginning with "#".

1999-10-24  Paul Eggert  <eggert@twinsun.com>

	* pch.c (another_hunk): Report a fatal error if a regular
	context hunk's pattern has a different number of unchanged
	lines than the replacement.

1999-10-18  Paul Eggert  <eggert@twinsun.com>

	* patch.c (main): If we skipped an ed patch, exit with nonzero status.

1999-10-17  Paul Eggert  <eggert@twinsun.com>

	* patch.c (main): Apply do_ed_script even if dry_run, because
	we need to make progress on the patch file.
	* pch.c (do_ed_script): If skip_rest_of_patch is nonzero,
	gobble up the patch without any other side effect.

1999-10-12  Paul Eggert  <eggert@twinsun.com>

	* NEWS, README: New bug reporting address.
	* NEWS: Report change in 2.5.4 that we forgot to document.
	* README: Document `configure --disable-largefile'.

	* basename.c, COPYING, getopt.c, getopt.h, getopt1.c, m4/largefile.m4:
	Update to latest version.
	* Makefile.in (basename$U.o): Depend on basename.h.
	(config.hin): Depend on $(srcdir)/aclocal.m4.

	* ansi2knr.c, maketime.c, mkinstalldirs, partime.c: Fix $Id.

	FreeBSD has an unrelated setmode function; work around this.
	* common.h (binary_transput): Don't declare unless O_BINARY.
	* patch.c (option_help, get_some_switches):
	Don't use setmode unless O_BINARY.
	* pch.c (open_patch_file): Don't invoke setmode unless O_BINARY.

	Fix incompatiblities with error.c.
	* common.h (program_name): Now XTERN char *, for compatibility
	with error.c.  All uses changed.
	(PROGRAM_NAME): New macro.
	(PARAMS): Use ANSI C version only if defined PROTOTYPES
	|| (defined __STDC__ && __STDC__), for compatibilty with error.c.
	* util.c (vararg_start): Likewise.
	* patch.c (program_name): Remove.
	(main): Initialize program_name.
	* version.c (version): Print PROGRAM_NAME, not program_name.

	Accommodate mingw32 port, which has one-argument mkdir (yuck!)
	and no geteuid.
	* m4/mkdir.m4: New file.
	* Makefile.in (ACINCLUDE_INPUTS): Add $(M4DIR)/mkdir.m4.
	* configure.in (AC_CHECK_FUNCS): Add geteuid, getuid.
	(PATCH_FUNC_MKDIR_TAKES_ONE_ARG): Add.
	* common.h (mkdir): Define if mkdir takes one arg.
	(geteuid): New macro, if not already defined.

1999-10-11  Christopher R. Gabriel  <cgabriel@tin.it>

	* patch.c (option_help): Updated bug report address
	* configure.in (VERSION): Version 2.5.5 released.

1999-09-01  Paul Eggert  <eggert@twinsun.com>

	* patch.c (main): Default simple_backup_suffix to ".orig".

1999-10-08  Paul Eggert  <eggert@twinsun.com>

	* patch.man: Make it clear that `patch -o F' should not be
	used if F is one of the files to be patched.

1999-08-30  Paul Eggert  <eggert@twinsun.com>

	Version 2.5.4 fixes a few minor bugs, converts C sources to
	ANSI prototypes, and modernizes auxiliary sources and autoconf
	scripts.

	* configure.in (VERSION): Version 2.5.4 released.
	(AC_CANONICAL_HOST): Add.
	(AC_SYS_LARGEFILE): Add, replacing inline code.
	(AC_EXEEXT): Add.
	(jm_AC_HEADER_INTTYPES_H): Add, replacing inline code.
	(AC_TYPE_PID_T): Add.
	(jm_STRUCT_UTIMBUF): Add, replacing inline code.
	(HAVE_MEMCHR): Remove obsolescent test; nobody uses NetBSD 1.0 now.
	(getopt_long): Append $U to object file basenames.
	(AC_CHECK_FUNCS): Add fseeko, setmode.  Remove mkdir.
	(AC_REPLACE_FUNCS): Add mkdir, rmdir.
	(jm_STRUCT_DIRENT_D_INO): Add, replacing inline code.

	* Makefile.in (EXEEXT): New macro.
	(mandir): New macro.
	(man1dir): Define in terms of mandir.
	(SRCS): Add mkdir.c, rmdir.c.
	(OBJS): Change .o to $U.o for addext, argmatch, backupfile, basename,
	error, inp, patch ,,pch, quotearg, util, version, xmalloc.
	(HDRS): Add basename.h, patchlevel.h.
	(MISC): Add ansi2knr.1, config.guess, config.sub.
	(MISC, config.hin): Remove acconfig.h; no longer needed.
	(DISTFILES_M4): New macro.
	(all): patch -> patch$(EXEEXT).
	(patch$(EXEEXT)): Renamed from patch.  All uses changed.
	(uninstall): Remove manual page.
	(configure): Depend on aclocal.m4.
	(M4DIR, ACINCLUDE_INPUTS): New macros.
	($(srcdir)/aclocal.m4): New rule.
	(patchlevel.h): Depend on configure.in, not Makefile,
	since we now distribute it.
	(distclean): Don't remove patchlevel.h.
	(dist): Distribute $(DISTFILES_M4).
	(addext_.c argmatch_.c backupfile_.c basename_.c error_.c
	getopt_.c getopt1_.c inp_.c malloc_.c mkdir_.c patch_.c pch_.c
	rename_.c util_.c version_.c xmalloc_.c): Depend on ansi2knr.
	Update dependencies to match sources.

	* common.h (_LARGEFILE_SOURCE): Remove; now autoconfigured.
	(file_offset): Depend on HAVE_FSEEKO, not _LFS_LARGEFILE.

	* patch.c (version_control_context): New variable.
	Convert to ANSI prototypes.
	Adjust to new argmatch calling convention.
	Similarly for get_version.
	Complain about creating an existing file only if
	pch_says_nonexistent returns 2 (not merely nonzero).
	Similarly for time mismatch check.
	(get_some_switches): Adjust to new get_version calling convention.
	Similarly for argmatch.

	* pch.c (<basename.h>): Include.
	(intuit_diff_type): Improve quality of test for empty file.
	(another_hunk): Don't assume off_t is no longer than long.

	* util.h (backup_type): New decl.
	* util.c (<basename.h>): Include.
	(move_file): Adjust to new find_backup_file_name convention.
	(doprogram, mkdir, rmdir): Remove; now in separate files.
	(fetchame): Match "/dev/null", not NULL_DEVICE.
	Ignore names that don't have enough slashes to strip off.

	* version.c: Update copyright notice.

1998-03-20  Paul Eggert  <eggert@twinsun.com>

	* configure.in (VERSION): Bump to 2.5.3.
	* quotearg.h (quotearg_quoting_options):
	Remove; it ran afoul of the Borland C compiler.
	Its address is now represented by the null pointer.
	* quotearg.c (default_quoting_options):
	Renamed from quotearg_quoting_options,
	and now static instead of extern.
	(clone_quoting_options, get_quoting_style, set_quoting_style,
	set_char_quoting, quotearg_buffer):
	Use default_quoting_options when passed a null pointer.
	* patch.c (main, get_some_switches):
	Pass a null pointer instead of address of quotearg_quoting_options.

1998-03-17  Paul Eggert  <eggert@twinsun.com>

	* patch.c (option_help): Update bug reporting address to gnu.org.
	* patch.man: Fix copyright and bug reporting address.

1998-03-16  Paul Eggert  <eggert@twinsun.com>

	* configure.in (VERSION): Bump to 2.5.2.
	(AC_CHECK_FUNCS): Add strerror.
	(jm_FUNC_MALLOC, jm_FUNC_REALLOC): Add.
	(AM_C_PROTOTYPES): Add.

	* NEWS, patch.c (longopts, get_some_switches), patch.man:
	Add --quoting-style, --posix options.

	* Makefile.in (LIBSRCS): Add malloc.c, realloc.c.
	(SRCS): Add error.c, quotesys.c, xmalloc.c.
	(OBJS): Likewise.
	(HDRS): Add error.h, quotesys.h, xalloc.h.
	(MISC): Add AUTHORS, aclocal.m4, ansi2knr.c.
	(clean): Use mostlyclean rule.
	(argmatch.o, inp.o, patch.o, pch.o): Now also depends on quotearg.h.
	(inp.o, patch.o, util.o): Now also depends on xalloc.h.
	(error.o, quotearg.o, quotesys.o, xmalloc.o,
	ansi2knr.o, ansi2knr, quotearg_.c, .c_.c): New rules.
	(U): New macro.
	(OBJS, quotearg$U.o): Rename quotearg.o to quotearg$U.o.
	(mostlyclean): Remove ansi2knr, *_.c.
	(.SUFFIXES): Add _.c.

	* acconfig.h (PROTOTYPES): New undef.

	* acconfig.h, configure.in (HAVE_INTTYPES_H, malloc, realloc):
	New macros.

	* aclocal.m4, error.c, error.h, malloc.c,
	quotearg.h, quotearg.c, realloc.c, xalloc.h, xmalloc.c: New files.

	* argmatch.c: Include <sys/types.h> before <argmatch.h>.
	Include <quotearg.h>.

	* argmatch.c (invalid_arg),
	inp.c (scan_input, report_revision, too_many_lines, get_input_file,
	plan_a),
	patch.c (main, get_some_switches, numeric_string),
	pch.c (open_patch_file, intuit_diff_type, do_ed_script):
	util.c (move_file, create_file, copy_file, version_get, removedirs):
	Quote output operands properly.

	* common.h: Include <inttypes.h> if available.
	(CHAR_BIT, TYPE_SIGNED, TYPE_MINIMUM, TYPE_MAXIMUM,
	CHAR_MAX, INT_MAX, LONG_MIN, SIZE_MAX, O_EXCL): New macros.
	(TMPINNAME_needs_removal, TMPOUTNAME_needs_removal,
	TMPPATNAME_needs_removal): New variables.
	(xmalloc): Remove decl; now in xalloc.h.

	* inp.c: Include <quotearg.h>, <xalloc.h>.

	* inp.c (get_input_file),
	pch.c (intuit_diff_type),
	util.c (version_controller):
	Don't do diff operation if diffbuf is null; used by ClearCase support.

	* inp.c (plan_b),
	patch.c (init_reject),
	pch.c (open_patch_file, do_ed_script):
	Create temporary file with O_EXCL to avoid races.

	* patch.c: Include <quotearg.h>, <xalloc.h>.
	(create_output_file, init_output): New open_flags arg.
	All callers changed.
	(init_reject): No longer takes filename arg.  All callers changed.
	(remove_if_needed): New function.
	(cleanup): Use it to remove temporary files only if needed.
	(TMPREJNAME_needs_removal): New var.
	(main): Set xalloc_fail_func to memory_fatal; needed for xalloc.
	Initialize quoting style from QUOTING_STYLE.
	(longopts, get_some_switches): Offset longarg options by CHAR_MAX,
	not 128; this is needed for EBCDIC ports.

	* patch.c (main, locate_hunk, abort_hunk, spew_output),
	pch.c (there_is_another_patch, intuit_diff_type, malformed,
	another_hunk):
	The LINENUM type now might be longer than long,
	so print and read line numbers more carefully.

	* patch.c (main),
	pch.c (there_is_another_patch):
	util.c (fetchname):
	strippath now defaults to -1, so that we can distinguish unset
	value from largest possible.

	* patch.man: Clarify how file name is chosen from candidates.

	* pch.c: Include <quotearg.h>.
	(p_strip_trailing_cr): New variable.
	(scan_linenum): New function.
	(pget_line, re_patch, there_is_another_patch, intuit_diff_type,
	get_line): Strip trailing CRs from context diffs that need this.
	(best_name): Use SIZE_MAX instead of (size_t) -1 for max size_t.

	* quotesys.c, quotearg.h: Renamed from quotearg.c and quotearg.h.
	All uses changed.
	* quotesys.h (__QUOTESYS_P): Renamed from __QUOTEARG_P.

	* util.c: Include <quotearg.h>, <xalloc.h>.
	(raise): Don't define if already defined.
	(move_file): New arg from_needs_removal.  All callers changed.
	(copy_file): New arg to_flags.  All callers changed.
	(CLEARTOOL_CO): New constant.
	(version_controller): Add ClearCase support.
	(format_linenum): New function.
	(fetchname): Allow any POSIX.1 time zone spec, which means
	any local time offset in the range -25:00 < offset < +26:00.
	Ignore the name if it doesn't have enough slashes to strip off.
	(xmalloc): Remove; now in xmalloc.c.

	* util.h (LINENUM_LENGTH_BOUND): New macro.
	(format_linenum): New decl.

	* version.c (copyright_string): Update years of copyrights.

1997-09-03  Paul Eggert  <eggert@twinsun.com>

	* configure.in (VERSION): Bump to 2.5.1.
	* inp.c (re_input): Don't free buffers twice when input is garbled.
	* patch.c (main): If skipping patch and Plan A fails, don't
	bother trying Plan B.

1997-08-31  Paul Eggert  <eggert@twinsun.com>

	* configure.in (VERSION): Version 2.5 released.

1997-07-21  Paul Eggert  <eggert@twinsun.com>

	* configure.in (VERSION): Bump to 2.4.4.
	* pch.c (there_is_another_patch), NEWS: Report an error if the patch
	input contains garbage but no patches.

	* pch.c (open_patch_file):
	Check for patch file too long (i.e., its size
	doesn't fit in a `long', and LFS isn't available).

	* inp.c (plan_a):
	Cast malloc return value, in case malloc returns char *.

1997-07-16  Paul Eggert  <eggert@twinsun.com>

	* configure.in (VERSION): Bump to 2.4.3.

	* NEWS, patch.man, pch.c (intuit_diff_type, get_line, pget_line):
	Now demangles RFC 934 encapsulation.
	* pch.c (p_rfc934_nesting): New var.

	* pch.c (intuit_diff_type): Don't bother to check file names carefully
	if we're going to return NO_DIFF.

	* inp.c (plan_a): Count the number of lines before allocating
	pointer-to-line buffer; this reduces memory requirements
	considerably (roughly by a factor of 5 on 32-bit hosts).
	Decrease `size' only when read unexpectedly reports EOF.
	(i_buffer): New var.
	(too_many_lines): New fn.
	(re_input): Free i_buffer if using plan A.
	Free buffers unconditionally; they can't be zero.

	* inp.c (plan_a, plan_b): Check for overflow of line counter.

	* pch.c (malformed), util.h (memory_fatal, read_fatal, write_fatal):
	Declare as noreturn.

1997-07-10  Paul Eggert  <eggert@twinsun.com>

	* configure.in (VERSION): Bump to 2.4.2.

	* util.c (ok_to_reverse), NEWS: The default answer is now `n';
	this is better for Emacs.

	* Makefile.in (dist): Use cp -p, not ln;
	some hosts do the wrong thing with ln if the source is a symbolic link.

	* patch.man: Fix typo: -y -> -Y.

1997-07-05  Paul Eggert  <eggert@twinsun.com>

	* configure.in (VERSION): Bump to 2.4.1.

	* patch.c: (main, get_some_switches), NEWS, patch.man:
	Version control is now independent of whether backups are made.
	* patch.c (option_help): Put version control options together.
	(get_some_switches): With CVS 1.9 hack, treat -b foo like -b -z foo,
	not just -z foo.  This change is needed due to recent change in -z.
	* backupfile.c (find_backup_file_name):
	backup_type == none causes undefined behavior;
	this undoes the previous change to this file.

	* patch.c (locate_hunk): Fix bug when locating context diff hunks
	near end of file with nonzero fuzz.

	* util.c (move_file): Don't assume that ENOENT is reported when both
	ENOENT and EXDEV apply; this isn't true with DJGPP, and
	POSIX doesn't require it.

	* pch.c (there_is_another_patch):
	Suggest -p when we can't intuit a file.

1997-06-19  Paul Eggert  <eggert@twinsun.com>

	* configure.in (VERSION): Version 2.4 released.
	* NEWS: Patch is now verbose when patches do not match exactly.

1997-06-17  Paul Eggert  <eggert@twinsun.com>

	* pc/djgpp/configure.sed (config.h): Remove redundant $(srcdir).

	* configure.in (VERSION): Bump to 2.3.9.
	* patch.c (main): By default, warn about hunks that succeed
	with nonzero offset.
	* patch.man: Add LC_ALL=C advice for making patches.
	* pc/djgpp/configure.sed (config.h): Fix paths to dependent files.

1997-06-17  Paul Eggert  <eggert@twinsun.com>

	* configure.in (VERSION): Bump to 2.3.8.

	* pch.c (open_patch_file): Test stdin for fseekability.
	(intuit_diff_type): Missing context diff headers are now warnings,
	not errors; some people use patches with them (e.g. when retrying
	rejects).

	* patch.c (struct outstate):
	New type, collecting together some output state vars.
	(apply_hunk, copy_till, spew_output, init_output): Use it.
	Keep track of whether some output has been generated.
	(backup_if_mismatch): New var.
	(ofp): Remove, in favor of local struct outstate vars.
	(main): Use struct outstate.  Initialize backup_if_mismatch to
	be the inverse of posixly_correct.  Keep track of whether mismatches
	occur, and use this to implement backup_if_mismatch.
	Report files that are not empty after patching, but should be.
	(longopts, option_help, get_some_switches): New options
	--backup-if-mismatch, --no-backup-if-mismatch.
	(get_some_switches): -B, -Y, -z no longer set backup_type.
	* backupfile.c (find_backup_file_name):
	Treat backup_type == none like simple.

	* Makefile.in (CONFIG_HDRS):
	Remove var; no longer needed by djgpp port.
	(DISTFILES_PC_DJGPP): Rename pc/djgpp/config.sed to
	pc/djgpp/configure.sed; remove pc/djgpp/config.h in favor of
	new file that edits it, called pc/djgpp/config.sed.
	* pc/djgpp/configure.bat: Rename config.sed to configure.sed.
	* pc/djgpp/configure.sed (CONFIG_HDRS): Remove.
	(config.h): Add rule to build this from config.hin and
	pc/djgpp/config.sed.
	* pc/djgpp/config.sed:
	Convert from .h file to .sed script that generates .h file.

	* NEWS: Describe --backup-if-mismatch, --no-backup-if-mismatch.
	* patch.man:
	Describe new options --backup-if-mismatch, --no-backup-if-mismatch
	and their ramifications.  Use unreadable backup to represent
	nonexistent file.

1997-06-12  Paul Eggert  <eggert@twinsun.com>

	* configure.in (VERSION): Bump to 2.3.7.
	(AC_CHECK_FUNCS): Add `raise'.

	* Makefile.in (inp.o): No longer depends on quotearg.h.

	* common.h (outfile): New decl (was private var named `output').
	(invc): New decl.
	(GENERIC_OBJECT): Renamed from VOID.
	(NULL_DEVICE, TTY_DEVICE): New macros.

	* patch.c (output): Remove; renamed to `outfile' and moved to common.h.
	(main): `failed' is count, not boolean.
	Say "Skipping patch." when deciding to skip patch.
	(get_some_switches): Set invc when setting inname.

	* inp.c: Do not include <quotearg.h>.
	(SCCSPREFIX, GET, GET_LOCKED, SCCSDIFF1, SCCSDIFF2, SCCSDIFF3,
	RCSSUFFIX, CHECKOUT, CHECKOUT_LOCKED, RCSDIFF1, RCSDIFF2):
	Move to util.c.
	(get_input_file): Invoke new functions version_controller and
	version_get to simplify this code.
	(plan_b): "/dev/tty" -> NULL_DEVICE

	* pch.h (pch_timestamp): New decl.
	* pch.c (p_timestamp): New var; takes over from global timestamp array.
	(pch_timestamp): New function to export p_timestamp.
	(there_is_another_patch): Use blander wording when you can't intuit
	the file name.
	Say "Skipping patch." when deciding to skip patch.
	(intuit_diff_type): Look for version-controlled but nonexistent files
	when intuiting file names; set invc accordingly.
	Ignore Index: line if either old or new line is present, and if
	POSIXLY_CORRECT is not set.
	(do_ed_script): Flush stdout before invoking popen, since it may
	send output to stdout.

	* util.h (version_controller, version_get): New decls.
	* util.c: Include <quotearg.h> earlier.
	(raise): New macro, if ! HAVE_RAISE.
	(move_file): Create empty unreadable file when backing up a nonexistent
	file.
	(DEV_NULL): New constant.
	(SCCSPREFIX, GET. GET_LOCKED, SCCSDIFF1, SCCSDIFF2,
	RCSSUFFIX, CHECKOUT, CHECKOUT_LOCKED, RCSDIFF1): Moved here from inp.c.
	(version_controller, version_get): New functions.
	(ask): Look only at /dev/tty for answers; and when standard output is
	not a terminal and ! posixly_correct, don't even look there.
	Remove unnecessary fflushes of stdout.
	(ok_to_reverse): Say "Skipping patch." when deciding to skip patch..
	(sigs): SIGPIPE might not be defined.
	(exit_with_signal): Use `raise' instead of `kill'.
	(systemic): fflush stdout before invoking subsidiary command.

	* patch.man: Document recent changes.
	Add "COMPATIBILITY ISSUES" section.

	* NEWS: New COMPATIBILITY ISSUES for man page.
	Changed verbosity when fuzz is found.
	File name intuition is changed, again.
	Backups are made unreadable when the file did not exist.

	* pc/djgpp/config.h (HAVE_STRUCT_UTIMBUF): Define.
	(HAVE_RAISE): New macro.
	(HAVE_UTIME_H): Define.
	(TZ_is_unset): Do not define; it's not a serious problem with `patch'
	to have TZ be unset in DOS.

1997-06-08  Paul Eggert  <eggert@twinsun.com>

	* configure.in (VERSION): Bump to 2.3.6.
	(AC_CHECK_HEADERS): Add utime.h.
	* acconfig.h, configure.in, pc/djgpp/config.h (HAVE_STRUCT_UTIMBUF):
	New macro.
	* pc/djgpp/config.h (HAVE_UTIME_H, TZ_is_unset): New macros.

	* NEWS, patch.man: Describe new -Z, -T options, new numeric
	option for -G, retired -G, and more verbose default behavior
	with fuzz.

	* pch.c (intuit_diff_type): Record times reported for files in headers.
	Remove head_says_nonexistent[x], since it's now equivalent to
	!timestamp[x].
	* util.h (fetchname): Change argument head_says_nonexistent to
	timestamp.
	* util.c: #include <partime.h> for TM_LOCAL_ZONE.
	Don't include <time.h> since common.h now includes it.
	(ok_to_reverse): noreverse and batch cases now output regardless of
	verbosity.
	(fetchname): Change argument head_says_nonexistent to pstamp, and
	store header timestamp into *pstamp.
	If -T or -Z option is given, match timestamps more precisely.
	(ask): Remove unnecessary close of ttyfd.
	When there is no terminal at all, output a newline to make the
	output look nicer.  After reporting EOF, flush stdout;
	when an input error, report the error type.

	* inp.c (get_input_file):
	Ask user whether to get file if patch_get is negative.

	* Makefile.in (clean): Don't clean */*.o; clean core* and *core.

1997-06-04  Paul Eggert  <eggert@twinsun.com>

	* configure.in (VERSION): Bump to 2.3.5.

	* util.c (ok_to_reverse):
	Be less chatty if verbosity is SILENT and we don't
	have to ask the user.  If force is nonzero, apply the patch anyway.

	* pch.c (there_is_another_patch):
	Before skipping rest of patch, skip to
	the patch start, so that another_hunk can skip it properly.
	(intuit_diff_type): Slight wording change for missing headers, to
	regularize with other diagnostics.  Fix off-by-one error when setting
	p_input_line when scanning the first hunk to check for deleted files.

1997-06-03  Paul Eggert  <eggert@twinsun.com>

	* configure.in (VERSION): Bump to 2.3.4.

	* NEWS: Now matches more generously against nonexistent or empty files.

	* pch.c (there_is_another_patch): Move warning about not being
	able to intuit file names here from skip_to.
	(intuit_diff_type): Fatal error if we find a headless unified
	or context diff.

	* util.c (ask): Null-terminate buffer properly even if it grew.
	(fetchname): No need to test for null first argument.

1997-06-02  Paul Eggert  <eggert@twinsun.com>

	* configure.in (VERSION): Bump to 2.3.3.
	* pch.c (p_says_nonexistent, pch_says_nonexistent): Is now 1 for empty,
	2 for nonexistent.
	(intuit_diff_type): Set p_says_nonexistent according to new meaning.
	Treat empty files like nonexistent files when reversing.
	(skip_to): Output better diagnostic when we can't intuit a file name.
	* patch.c (main):
	Count bytes, not lines, when testing whether a file is empty,
	since it may contain only non-newline chars.
	pch_says_nonexistent now returns 2 for nonexistent files.

1997-06-01  Paul Eggert  <eggert@twinsun.com>

	* configure.in (VERSION): Bump to 2.3.2.
	* pch.c (open_patch_file):
	Fix bug when computing size of patch read from a pipe.

1997-05-30  Paul Eggert  <eggert@twinsun.com>

	* configure.in (VERSION): Bump to 2.3.1.

	* Makefile.in (transform, patch_name): New vars,
	for proper implementation of AC_ARG_PROGRAM.
	(install, uninstall): Use them.
	(install-strip): New rule.
	* pc/djgpp/config.sed (program_transform_name): Set to empty.

1997-05-30  Paul Eggert  <eggert@twinsun.com>

	* configure.in (VERSION), NEWS: Version 2.3 released.
	* patch.man: Fix two font typos.
	* util.c (doprogram): Fix misspelled decl.

1997-05-26  Paul Eggert  <eggert@twinsun.com>

	* configure.in (VERSION): Bump to 2.2.93.

	* pch.c (open_patch_file):
	Fatal error if binary_transput and stdin is a tty.

	* pc/djgpp/config.sed (chdirsaf.c):
	Use sed instead of cp, since cp might not be installed.
	* pc/djgpp/configure.bat:
	Prepend %srcdir% to pathname of config.sed, for crosscompiles.

1997-05-25  Paul Eggert  <eggert@twinsun.com>

	* configure.in (VERSION): Bump to 2.2.92.
	(D_INO_IN_DIRENT): New macro.
	* pc/djgpp/config.h, acconfig.h (D_INO_IN_DIRENT): New macro.
	* backupfile.c (REAL_DIR_ENTRY):
	Depend on D_INO_IN_DIRENT, not _POSIX_VERSION.

	* addext.c (addext): Adjust slen when adjusting s for DOS 8.3 limit.
	Do not use xxx.h -> xxxh~ hack.

	* util.c: (move_file): Avoid makedirs test when possible even
	if FILESYSTEM_PREFIX_LEN (p) is nonzero.  Don't play
	case-changing tricks to come up with backup file name; it's
	not portable to case-insensitive file systems.
	* common.h (ISLOWER): Remove.

	* inp.c (scan_input): Don't use Plan A if (debug & 16).

	* patch.c (shortopts): Add -g, -G.
	(longopts): --help now maps to 132, not 'h', to avoid confusion.
	(get_some_switches): Likewise.
	Don't invoke setmode on input if --binary; wait until needed.
	Don't ever invoke setmode on stdout.
	* pch.c (open_patch_file): Setmode stdin to binary if binary_transput.

	* patch.man: Fix documentation of backup file name to match behavior.
	Add advice for ordering of patches of derived files.
	Add /dev/tty to list of files used.
	* README: Adjust instructions for building on DOS.
	* pc/djgpp/README: Remove tentative wording.
	* NEWS: The DOS port is now tested.
	Backup file names are no longer computed by switching case.

	* pc/chdirsaf.c (ERANGE): Include <errno.h> to define it.
	(restore_wd): chdir unconditionally.
	(chdir_safer): Invoke atexit successfully at most once.
	* pc/djgpp/config.sed: Use chdirsaf.o, not pc/chdirsaf.o.
	Replace CONFIG_HDRS, don't append.
	Use $(srcdir) in CONFIG_STATUS.
	Don't apply $(SHELL) to $(CONFIG_STATUS).
	Append rules for chdirsaf.o, chdirsaf.c; clean chdirsaf.c at the end.
	* pc/djgpp/configure.bat: Append CR to each line; DOS needs this.
	Don't use | as sed s delimiter; DOS can't handle it.

1997-05-21  Paul Eggert  <eggert@twinsun.com>

	* configure.in (VERSION): Bump to 2.2.91.

	* pch.c (another_hunk):
	Fix bug with computing size of prefix and suffix context
	with ordinary context diffs.  Report malformed patch if a unified diff
	has nothing but context.

	* inp.c (get_input_file):
	Use patch_get, not backup_type, to decide whether to
	get from RCS or SCCS.  Use the word `get' in diagnostics.
	* patch.c (main): Initialize patch_get from PATCH_GET.
	Omit DEFAULT_VERSION_CONTROL hook; it just leads to nonstandarization.
	(longopts, option_help, get_some_switches): Add support for -g, -G.
	(option_help): Add bug report address.
	* common.h (patch_get): New decl.
	* patch.man: Add -g and -G options; use `get' instead of `check out'.
	Add PATCH_GET.  Recommend -Naur instead of -raNU2 for diff.
	* NEWS: Describe -g, -G, PATCH_GET.

	* version.c (copyright_string): Use only most recent copyright year,
	as per GNU standards.

	* Makefile.in (DISTFILES_PC): Remove pc/quotearg.c.
	* pc/djgpp/config.sed: Remove unnecessary hooks for quotearg and SHELL.

1997-05-18  Paul Eggert  <eggert@twinsun.com>

	* configure.in (VERSION): Increase to 2.2.9.
	(AC_TYPE_MODE_T): Add.

	* pch.h (another_hunk): New parameter REV.
	* pch.c (hunkmax): Now of type LINENUM.
	(malformed): Add decl.
	(there_is_another_patch): Skip inname-detection if skip_rest_of_patch.
	(intuit_diff_type): To determine whether file appears to have been
	deleted, look at replacement, not pattern.
	If there is a mismatch between existence of file and whether the
	patch claims to change whether the file exists, ask whether to
	reverse the patch.
	(another_hunk): New parameter REV specifying whether to reverse the
	hunk.  All callers changed.
	(do_ed_script): Add assertion to ensure input file exists.

	* util.h (create_file): New function.
	(copy_file): Now takes mode, not struct stat.
	(makedirs): No longer exported.
	(move_file): Now takes mode, not struct stat.
	* util.c (makedirs): No longer exported.
	(move_file): Accept mode of destination, not struct stat.
	All callers changed.
	Quote file names in diagnostics.
	Create parent dir of destination if necessary.
	Don't use ENOTDIR.
	Don't unlink source; it will be unlinked later.
	Unlink destination if FROM is zero.
	(create_file): New function.
	(copy_file): Accept mode of destination, not struct stat.
	All callers changed.
	Use create_file to create file.
	(ok_to_reverse): Moved here from patch.c.  Now accepts format and args;
	all callers changed.
	(mkdir): 2nd arg is now mode_t, for better compatibility.
	(replace_slashes): Ignore slashes at the end of the filename.

	* common.h (noreverse): New decl.
	(ok_to_reverse): Remove decl.

	* patch.c (noreverse): Now extern.
	(main): New environment var PATCH_VERSION_CONTROL overrides VERSION_CONTROL.
	Don't assert(hunk) if we're skipping the patch; we may not have any hunks.
	When removing a file, back it up if backups are desired.
	Don't chmod output file if input file did not exist.
	chmod rej file to input file's mode minus executable bits.
	(locate_hunk): Go back to old way of a single fuzz parameter, but
	handle it more precisely: context diffs with partial contexts
	can only match file ends, since the partial context can occur
	only at the start or end of file.
	All callers changed.
	(create_output_file): Use create_file to create files.
	(ok_to_reverse): Move to util.c.

	* inp.c (scan_input, get_input_file): Quote file names in diagnostics.
	(get_input_file): Set inerrno if it's not already set.
	Don't create file; it's now the caller's responsibility.
	(plan_b): Use /dev/null if input size is zero, since it might not exist.
	Use create_file to create temporary file.

	* NEWS: Add PATCH_VERSION_CONTROL; DOS port is untested.

	* pc/djgpp/config.h: Add comment for mode_t.

	* pc/djgpp/README: Note that it's not tested.

	* patch.man: PATCH_VERSION_CONTROL overrides VERSION_CONTROL.

1997-05-15  Paul Eggert  <eggert@twinsun.com>

	* configure.in: Add AC_PREREQ(2.12).
	(VERSION): Bump to 2.2.8.
	(ed_PROGRAM): Rename from ED_PROGRAM.

	* pch.c (prefix_components): Support DOS file names better.
	Fix typo that caused fn to almost always yield 0.

	* util.c (<time.h>, <maketime.h>): Include.
	(move_file, copy_file): Add support for DOS filenames.
	Preserve mode of input files when creating temp files.
	Add binary file support.
	(doprogram, rmdir): New functions.
	(mkdir): Use doprogram.
	(replace_slashes): Add support for DOS filenames.
	(removedirs): New function.
	(init_time)): New function.
	(initial_time): New var.
	(fetchname): Add support for deleted files, DOS filenames.

	* basename.c (FILESYSTEM_PREFIX_LEN, ISSLASH):
	New macros, for DOS port.
	(base_name): Use them.

	* addext.c (HAVE_DOS_FILE_NAMES): New macro.
	<limits.h>: Include if HAVE_LIMITS_H.
	(addext): Handle hosts with DOS file name limits.

	* common.h (LONG_MIN): New macro.
	(FILESYSTEM_PREFIX_LEN, ISSLASH): New macros, for DOS port.
	(ok_to_create_file): Remove.
	(reverse): Now int.
	(ok_to_reverse): New function decl.
	(O_WRONLY, _O_BINARY, O_BINARY, O_CREAT, O_TRUNC): New macros.
	(binary_transput): New var decl.

	* Makefile.in (ed_PROGRAM): Renamed from ED_PROGRAM.
	(CONFIG_HDRS, CONFIG_STATUS): New vars.
	(SRCS): Add maketime.c, partime.c.
	(OBJS): Likewise.
	(HDRS): Add maketime.h, partime.h.
	(DISTFILES_PC, DISTFILES_PC_DJGPP): New vars.
	(Makefile, config.status): Use CONFIG_STATUS, not config.status.
	(clean): Remove */*.o.
	(dist): Add pc and pc/djgpp subdirectories.
	($(OBJS)): Depend on $(CONFIG_HDRS) instead of config.h.
	(maketime.o, partime.o): New rules.
	(util.o): Depend on maketime.h.

	* patch.c (main):
	Call init_time.  Add DEFAULT_VERSION_CONTROL hook for people who
	prefer the old ways.  Build temp file names before we might invoke cleanup.
	Add support for deleted files and clean up the patch-swapping code a bit.
	Delete empty ancestors of deleted files.
	When creating temporaries, use file modes of original files.
	(longopts, get_some_switches): New option --binary.
	(get_some_switches): Report non-errno errors with `fatal', not `pfatal'.
	(create_output_file): New function, which preserves modes of original files
	and supports binary transput.
	(init_output, init_reject): Use it.
	(ok_to_reverse): New function.
	(TMPDIR): New macro.
	(make_temp): Use $TMPDIR, $TMP, $TEMP, or TMPDIR, whichever comes first.

	* pch.c (p_says_nonexistent): New var.
	(open_patch_file): Add binary transput support.
	Apply stat to file names retrieved from user.
	Reject them if they don't exist.
	(intuit_diff_type): Add support for deleting files.
	Don't treat trivial directories any differently.
	Avoid stating the same file twice in common case of context diffs.
	(prefix_components): Don't treat trivial directories any differently.
	Add support for DOS filenames.
	(pch_says_nonexistent): New function.
	(do_ed_script): Preserve mode of input files when creating temp files.
	Add support for binary transput.

	* pch.h (pch_says_nonexistent): New decl.

	* util.h (replace_slashes): No longer exported.
	(fetchname): Add support for deleted files.
	(copy_file, move_file): Add support for preserving file modes.
	(init_time, removedirs): New functions.

	* argmatch.c: Converge with fileutils.

	* backupfile.c: Converge with fileutils.
	(find_backup_file_name): Treat .~N~ suffix just like any other suffix
	when handling file names that are too long.

	* inp.c:
	In messages, put quotes around file names and spaces around "--".
	(get_input_file): Allow files to be deleted.  Do the expense of
	makedirs only if we can't create the file.
	(plan_a, plan_b): Add support for binary transput.

	* pc/chdirsaf.c, pc/djgpp/README, pc/djgpp/config.h, pc/djgpp/config.sed, pc/djgpp/configure.bat, pc/quotearg.c:
	New file.

	* NEWS:
	New methods for removing files; adjust file name intuition again.
	Add description of MS-DOS and MS-Windows ports.

	* patch.man:
	Simplify file name intuition slightly (no distinction for trivial dirs).
	Add --binary.  Describe how files and directories are deleted.
	Suggest diff -a.  Include caveats about what context diffs cannot represent.

1997-05-06  Paul Eggert  <eggert@twinsun.com>

	* configure.in (VERSION): Now 2.2.7.
	(CPPFLAGS, LDFLAGS, LIBS): If the user has not set any of these vars,
	prefer support for large files if available.

	* common.h (_LARGEFILE_SOURCE): Define.
	(file_offset): New typedef.
	(file_seek, file_tell): New macros.

	* patch.c (main):
	Remove empty files by default unless POSIXLY_CORRECT is set.

	* util.c, util.h (Fseek):
	Use file_offset instead of long, for portability to large-file hosts.

	* pch.c: (p_base, p_start, next_intuit_at, skip_to, open_patch_file,
	intuit_diff_type, another_hunk, incomplete_line, do_ed_script):
	Use file_offset instead of long, for portability to large-file hosts.
	(prefix_components): Renamed from path_name_components; count only
	nontrivial prefix components, and take a 2nd EXISTING arg.
	(existing_prefix_components): Remove; subsumed by prefix_components.
	(intuit_diff_type): When creating files, try for the creation of the
	fewest directories.

	* configure.in (VERSION): Now 2.2.6.

	* pch.c (existing_prefix_components): New function.
	(intuit_diff_type): When creating a file, use a name whose existing
	directory prefix contains the most nontrivial path name components.
	(best_name): Don't check for null 2nd arg.

	* util.h (replace_slashes): New decl.

	* util.c (replace_slashes): Now external.
	(fetchname): Don't assume chars are nonnegative.

	* patch.man:
	When creating a file, use a name whose existing directory prefix
	contains the most nontrivial path name components.
	Add advice for creating patches and applying them.

1997-05-06  Paul Eggert  <eggert@twinsun.com>

	* configure.in (VERSION): Now 2.2.6.

	* pch.c (existing_prefix_components): New function.
	(intuit_diff_type): When creating a file, use a name whose existing
	directory prefix contains the most nontrivial path name components.
	(best_name): Don't check for null 2nd arg.

	* util.h (replace_slashes): New decl.
	* util.c (replace_slashes): Now external.
	(fetchname): Don't assume chars are nonnegative.

	* patch.man:  Describe above change to pch.c.
	Add advice for creating patches and applying them.

1997-05-05  Paul Eggert  <eggert@twinsun.com>

	* configure.in (VERSION): Update to 2.2.5.

	* quotearg.h, quotearg.c: New files.
	* Makefile.in (SRCS, OBJS, HDRS): Mention new files.
	(inp.o, util.o): Now depends on quotearg.h.
	(quotearg.o): New makefile rule.

	* common.h (posixly_correct): New var.
	* patch.c (main): Initialize it.
	If ! posixly_correct, default backup type is now `existing'.
	SIMPLE_BACKUP_SUFFIX no longer affects backup type.
	(backup): Remove var.

	* util.h: (countdirs): Remove.
	(systemic): New decl.
	* util.c (move_file): Try making the parent directory of TO
	if backup prefix or suffix contain a slash.
	(ask): Remove arbitrary limit on size of result.
	(systemic): New function.
	(mkdir): Work even if arg contains shell metacharacters.
	(replace_slashes): Return 0 if none were replaced.
	Don't replace slash after . or .. since it's redundant.
	(countdirs): Remove.
	(makedirs): Ignore mkdir failures.

	* NEWS, patch.man: More POSIXLY_CORRECT adjustments.
	Describe new rules for how file names are intuited.

1997-04-17  Paul Eggert  <eggert@twinsun.com>

	* configure.in (VERSION): Version 2.2 released.

	* Makefile.in (config.hin):
	Remove before building; we always want the timestamp updated.

	* inp.c (get_input_file):
	Look for RCS files only if backup_type == numbered_existing.

	* NEWS, patch.man:
	Remove mention of never-implemented -V rcs and -V sccs options.
	* patch.man: `pathname' -> `file name'
	Correct the description of how file names are found in diff headers.
	Clarify the distinction between ordinary and unified context diffs.

1997-04-13  Paul Eggert  <eggert@twinsun.com>

	* configure.in (VERSION): Update to 2.1.7.

	* patch.c (numeric_optarg): New function.
	(get_some_switches): Use it.

	* pch.c (intuit_diff_type): When creating a file, prefer a name whose
	existing dir prefix is the longest.

	* util.h (countdirs): New function.
	* util.c (replace_slashes, countdirs): New functions.
	(makedirs): Use replace_slashes, to be more like countdirs.

	* patch.man: Explain -pN vs -p N.  Recommend --new-file.
	Explain possible incompatibility with strip count.

1997-04-10  Paul Eggert  <eggert@twinsun.com>

	* configure.in (VERSION): Bump to 2.1.6.
	(AC_CHECK_HEADERS): Remove stdlib.h (i.e. remove HAVE_STDLIB_H).

	* Makefile.in: (HDRS, patchlevel.h, TAGS, distclean, maintainer-clean):
	Don't distribute patchlevel.h; let the user do it.
	This works around some obscure (possibly nonexistent?) `make' bugs.

	* common.h (program_name): extern, not XTERN.
	(<stdlib.h>): Include if STDC_HEADERS, not if HAVE_STDLIB_H.
	(atol, getenv, malloc, realloc): Don't worry whether they're #defined.

	* patch.c (get_some_switches):
	Add special hack for backwards compatibility with CVS 1.9.
	(-B, -Y, -z): Now set backup_type = simple.

	* NEWS: Fix misspellings; minor reformatting.
	* README: Report POSIX.2 compliance.

1997-04-06  Paul Eggert  <eggert@twinsun.com>

	Move all old RCS $Log entries into ChangeLog.
	#include all files with < >, not " ".

	* addext.c, argmatch.c, argmatch.h, memchr.c, install-sh:
	New files.
	* EXTERN.h, INTERN.h: Removed.
	* config.hin: Renamed from config.h.in.

	* acconfig.h (NODIR): Remove.
	(HAVE_MEMCHR): Add.

	* configure.in (AC_ARG_PROGRAM, AC_PROG_MAKE_SET, HAVE_MEMCHR): Add.
	(AC_CHECK_HEADERS): Replaces obsolescent AC_HAVE_HEADERS.
	Add stdlib.h, string.h, unistd.h, varargs.h.
	Delete obsolete call to AC_UNISTD_H.
	(AC_CONFIG_HEADER): Rename config.h.in to config.hin.
	(AC_C_CONST): Replaces obsolescent AC_CONST.
	(AC_CHECK_FUNC): Check for getopt_long; define LIBOBJS and substitute
	for it accordingly.
	(AC_CHECK_FUNCS): Replaces obsolescent AC_HAVE_FUNCS.
	Add _doprintf, isascii, mktemp, sigaction, sigprocmask, sigsetmask.
	Remove strerror.
	(AC_FUNC_CLOSEDIR_VOID, AC_FUNC_VPRINTF): Add.
	(AC_HEADER_DIRENT): Replaces obsolescent AC_DIR_HEADER.
	(AC_HEADER_STDC): Replaces obsolescent AC_STDC_HEADERS.
	(AC_SYS_LONG_FILE_NAMES): Replaces obsolescent AC_LONG_FILE_NAMES.
	(AC_TYPE_OFF_T): Replaces obsolescent AC_OFF_T.
	(AC_TYPE_SIGNAL): Replaces obsolescent AC_RETSIGTYPE.
	(AC_TYPE_SIZE_T): Replaces obsolescent AC_SIZE_T.
	(AC_XENIX_DIR): Remove.
	(ED_PROGRAM): New var.
	(NODIR): Remove.
	(PACKAGE, VERSION): New vars; substitute them with AC_SUBST.

	* Makefile.in: Conform to current GNU build standards.
	Redo dependencies.  Use library getopt_long if available.
	Use `&&' instead of `;' inside shell commands where applicable;
	GNU make requires this.
	Use double-colon rules for actions that do not build files.
	(@SET_MAKE@): Added.
	(CFLAGS, LDFLAGS, prefix, exec_prefix): Base on @ versions of symbols.
	(COMPILE, CPPFLAGS, DEFS, ED_PROGRAM, LIBOBJS, LIBSRCS, PACKAGE,
	VERSION): New symbols.
	(SRCS, OBJS, HDRS, MISC): Add new files.
	(man1dir): Renamed from mandir.
	(man1ext): Renamed from manext.
	(patch): Put -o first.
	(install): Use $(transform) to allow program to be renamed by configure.
	(patchlevel.h): Build from $(VERSION).
	(dist): Get version number from $(VERSION) and package name from
	$(PACKAGE).
	(TAGS): Scan $(HDRS).
	(maintainer-clean): Renamed from realclean.  Remove patchlevel.h.

	* backupfile.h (simple_backup_suffix): Now const *.
	(find_backup_file_name, base_name, get_version): Args are now const *.
	(base_name): New decl.
	* backupfile.c (<config.h>): Include only if HAVE_CONFIG_H.
	(<argmatch.h>): Include.
	(<string.h>): Include if HAVE_STRING_H, not if STDC_HEADERS.
	(<strings.h>): Include if !HAVE_STRING_H.
	(<unistd.h>): Do not include.
	(<dirent.h>): Redo include as per current autoconf standards.
	(<limits.h>): Include if HAVE_LIMITS_H. Define CHAR_BIT if not defined.
	(NLENGTH): Now returns size_t.
	(CLOSEDIR, INT_STRLEN_BOUND): New macros.
	(ISDIGIT): Use faster method.
	(find_backup_file_name): No longer depends on NODIR.
	Remove redundant code.
	(make_version_name): Remove; do it more portably.
	(max_backup_version): Args are now const *.
	(version_number): Simplify digit checking.
	(basename, concat, dirname): Remove.
	(argmatch, invalid_arg): Move to argmatch.c.  Simplify test for
	ambiguous args.  When reporting an error, use program_name not "patch".
	(addext): Move to addext.c.  Treat all negative values from pathconf
	like -1.  Always use long extension if it fits, even if the filesystem
	does not support long file names.
	(backup_types): Now const.

	* common.h, inp.h (XTERN): Renamed from EXT to avoid collision
	with errno.h reserved name space.

	* common.h (DEBUGGING): Now an integer; default is 1.
	(enum diff): New type.
	(diff_type): Use it instead of small integers.
	(CONTEXT_DIFF, NORMAL_DIFF, ED_DIFF, NEW_CONTEXT_DIFF, UNI_DIFF):
	Now enumerated values instead of macros.
	(NO_DIFF): New enumerated value (used instead of 0).
	(volatile): Default to the empty string if __STDC__ is not defined.
	(<signal.h>): Do not include.
	(Chmod, Close, Fclose, Fflush, Fputc, Signal, Sprintf, Strcat,
	Strcpy, Unlink, Write): Remove these macros; casts to void are
	not needed for GNU coding standards.
	(INITHUNKMAX): Move to pch.c.
	(malloc, realloc, INT_MIN, MAXLINELEN, strNE, strnNE,
	Reg1, Reg2, Reg3, Reg4, Reg5, Reg6, Reg7, Reg8, Reg9, Reg10, Reg11,
	Reg12, Reg13, Reg14, Reg15, Reg16): Remove these macros.
	(S_IXOTH, S_IWOTH, S_IROTH, S_IXGRP, S_IWGRP,
	S_IRGRP, S_IXUSR, S_IWUSR, S_IRUSR, O_RDONLY, O_RDWR):
	Define these macros, if not defined.
	(CTYPE_DOMAIN, ISLOWER, ISSPACE, ISDIGIT, PARAMS): New macros.
	(instat): Renamed from filestat; used for input file now.
	(bufsize, using_plan_a, debug, strippath): Not statically initialized.
	(debug): #define to 0 if not DEBUGGING, so that users of `debug'
	no longer need to be surrounded by `#if DEBUGGING'.
	(out_of_mem, filec, filearg, outname, toutkeep, trejkeep): Remove.
	(inname, inerrno, dry_run, origbase): New variables.
	(origprae): Now const*.
	(TMPOUTNAME, TMPINNAME, TMPPATNAME): Now const*volatile.
	(verbosity): New variable; subsumes `verbose'.
	(DEFAULT_VERBOSITY, SILENT, VERBOSE): Values in a new enum.
	(verbose): Removed.
	(VOID): Use `#ifdef __STDC__' instead of`#if __STDC__',
	for consistency elsewhere.
	(__attribute__): New macro (empty if not a recent GCC).
	(fatal_exit): Renamed from my_exit.
	(errno): Don't define if STDC_HEADERS.
	(<string.h>): Include if either STDC_HEADERS or HAVE_STRING_H.
	(memcmp, memcpy): Define if !STDC_HEADERS && !HAVE_STRING_H
	&& !HAVE_MEMCHR.
	(<stdlib.h>): Include if HAVE_STDLIB_H, not if STDC_HEADERS.
	(atol, getenv, malloc, realloc, lseek): Declare only if not defined
	as a macro.
	(popen, strcpy, strcat, mktemp): Do not declare.
	(lseek): Declare to yield off_t, not long.
	(<fcntl.h>): Include only if HAVE_FCNTL_H.

	* inp.h (get_input_file): New decl.
	* inp.c (SCCSPREFIX, GET, GET_LOCKED, SCCSDIFF, RCSSUFFIX, CHECKOUT,
	CHECKOUT_LOCKED, RCSDIFF): Moved here from common.h.
	(i_ptr): Now char const **.
	(i_size): Remove.
	(TIBUFSIZE_MINIMUM): Define only if not already defined.
	(plan_a, plan_b): Arg is now const *.
	(report_revision): Declare before use.  It's now the caller's
	responsibility to test whether revision is 0.
	(scan_input, report_revision, get_input_file):
	Be less chatty unless --verbose.
	(get_input_file): New function, split off from plan_a.
	Reuse file status gotten by pch if possible.  Allow for dry run.
	Use POSIX bits for creat, not number.  Check for creation and
	close failure, and use fstat not stat.  Use memcpy not strncpy.
	(plan_a): Rewrite for speed.
	Caller now assigns result to using_plan_a.
	Don't bother reading empty files; during dry runs they might not exist.
	Use ISSPACE, not isspace.
	(plan_b): Allow for dry runs.  Use ISSPACE, and handle sign extension
	correctly on arg.  Use POSIX symbol for open arg.

	* patch.c (backup, output, patchname, program_name): New vars.
	(last_frozen_line): Moved here from inp.h.
	(TMPREJNAME): Moved here from common.h.
	(optind_last): Removed.
	(do_defines, if_defined, not_defined, else_defined, end_defined):
	Now char const.  Prepend with \n (except for not_defined) to
	allow for files ending in non-newline.
	(Argv): Now char*const*.
	(main, get_some_switches): Exit status 0 means success,
	1 means hunks were rejected, 2 means trouble.
	(main, locate_hunk, patch_match): Keep track of patch prefix context
	separately from suffix context; this fixes several bugs.
	(main): Initialize bufsize, strippath.
	Be less chatty unless --verbose.
	No more NODIR; always have version control available.
	Require environment variables to be nonempty to have effect.
	Add support for --dry-run, --output, --verbose.
	Invoke get_input_file first, before deciding among do_ed_script,
	plan_a, or plan_b.
	Clear ofp after closing it, to keep discipline that ofp is either
	0 or open, to avoid file descriptor leaks.  Conversely, rejfp doesn't
	need this trick since static analysis is enough to show when it
	needs to be closed.
	Don't allow file-creation patches to be applied to existing files.
	Misordered hunks are now not fatal errors; just go on to the next file.
	It's a fatal error to fall back on plan B when --output is given,
	since the moving hand has writ.
	Add support for binary files.
	Check for I/O errors.
	chmod output file ourselves, rather than letting move_file do it;
	this saves global state.
	Use better grammar when outputting hunks messages, e.g. avoid
	`1 hunks'.
	(main, reinitialize_almost_everything):
	Remove support for multiple file arguments.
	Move get_some_switches call from reinitialize_almost_everything
	to main.
	(reinitialize_almost_everything): No need to reinitialize things
	that are no longer global variables, e.g. outname.
	(shortopts): Remove leading "-"; it's no longer important to
	return options and arguments in order.  '-b' no longer takes operand.
	-p's operand is no longer optional.  Add -i, -Y, -z.  Remove -S.
	(longopts): --suffix is now pared with -z, not -b.  --backup now
	means -b.  Add --input, --basename-prefix, --dry-run, --verbose.
	Remove --skip.  --strip's operand is now required.
	(option_help): New variable.  Use style of current coding standards.
	Change to match current option set.
	(usage): Use it.
	(get_some_switches): Get all switches, since `+' is defunct.
	New options -i, -Y, -z, --verbose, --dry-run.
	Option -S removed.
	-b now means backup (backup_type == simple), not simple_backup_suffix.
	-B now implies backup, and requires nonempty operand.
	-D no longer requires first char of argument to be an identifier.
	`-o -' is now disallowed (formerly output to regular file named "-").
	-p operand is now required.
	-v no longer needs to cleanup (no temp files can exist at that point).
	-V now implies backup.
	Set inname, patchname from file name arguments, if any;
	do not set filearg.  It's now an error if extra operands are given.
	(abort_junk): Check for write errors in reject file.
	(apply_hunk, copy_till): Return error flag, so that failure to apply
	out-of-order hunk is no longer fatal.
	(apply_hunk): New arg after_newline,
	for patching files not ending in newline.
	Cache ofp for speed.  Check for write errors.
	(OUTSIDE, IN_IFNDEF, IN_IFDEF, IN_ELSE): Now part of an enumerated type
	instead of being #defined to small integers.
	Change while-do to do-while when copying !-part for R_do_defines,
	since condition is always true the first time through the loop.
	(init_output, init_reject): Arg is now const *.
	(copy_till, spew_output): Do not insert ``missing'' newlines;
	propagate them via new after_newline argument.
	(spew_output): Nothing to copy if last_frozen_line == input lines.
	Do not close (ofp) if it's null.
	(dump_line): Remove.
	(similar): Ignore presence or absence of trailing newlines.
	Check for only ' ' or '\t', not isspace (as per POSIX.2).
	(make_temp): Use tmpnam if mktemp is not available.
	(cleanup): New function.
	(fatal_exit): Use it.  Renamed from my_exit.
	Take signal to exit with, not exit status (which is now always 2).

	* pch.h, pch.c (pch_prefix_context, pch_suffix_context):
	New fns replacing pch_context.
	(another_hunk): Now yields int, not bool; -1 means out of memory.
	Now takes difftype as argument.
	(pch_write_line): Now returns boolean indicating whether we're after
	a newline just after the write, for supporting non-text files.
	* pch.c (isdigit): Remove; use ISDIGIT instead.
	(INITHUNKMAX): Moved here from common.h.
	(p_context): Removed.  We need to keep track of the pre- and post-
	context separately, in:
	(p_prefix_context, p_suffix_context): New variables.
	(bestguess): Remove.
	(open_patch_file): Arg is now char const *.
	Copy file a buffer at a time, not a char at a time, for speed.
	(grow_hunkmax): Now returns success indicator.
	(there_is_another_patch, skip_to, another_hunk, do_ed_script):
	Be less chatty unless --verbose.
	(there_is_another_patch):
	Avoid infinite loop if user input keeps yielding EOF.
	(intuit_diff_type): New returns enum diff, not int.
	Strip paths as they're being fetched.
	Set ok_to_create_file correctly even if patch is reversed.
	Set up file names correctly with unidiff output.
	Use algorithm specified by POSIX 1003.2b/D11 to deduce
	name of file to patch, with the exception of patches
	that can create files.
	(skip_to): Be verbose if !inname, since we're about to ask the
	user for a file name and the context will help the user choose.
	(another_hunk): Keep context as LINENUM, not int.
	If the replacement is missing, calculate its context correctly.
	Don't assume input ends in newline.
	Keep track of patch prefix context separately from suffix context;
	this fixes several bugs.
	Don't assume blank lines got chopped if the replacement is missing.
	Report poorly-formed hunks instead of aborting.
	Do not use strcpy on overlapping strings; it's not portable.
	Work even if lines are incomplete.
	Fix bugs associated with context-less context hunks,
	particularly when patching in reverse.
	(pget_line): Now takes just 1 arg; instead of second arg,
	just examine using_plan_a global.  Return -1 if we ran out
	of memory.
	(do_ed_script): Now takes output FILE * argument.
	Take name of editor from ED_PROGRAM instead of hardwiring /bin/ed.
	Don't bother unlinking TMPOUTNAME.
	Check for popen failure.
	Flush pipe to check for output errors.
	If ofp is nonzero, copy result to it, instead of trying to
	move the result.

	* util.h, util.c (say1, say2, say3, say4, fatal1, fatal2, fatal3,
	fatal4, pfatal1, pfatal2, pfatal3, pfatal4, ask1, ask2, ask3, ask4):
	Remove; replaced with following.
	(ask, say, fatal, pfatal): New stdarg functions.
	(fetchname): Remove last, `assume_exists' parameter.
	(savebuf, savestr, move_file, copy_file): Args are now const *.
	(exit_with_signal): New function, for proper process status if
	a signal is received as per POSIX.2.
	(basename): Rename to `base_name' and move to backupfile.
	* util.c (<signal.h>): Include here, not in common.h.
	(vararg_start): New macro.
	(va_dcl, va_start, va_arg, va_end): Define if neither <stdarg.h>
	nor <varargs.h> are available.
	(SIGCHLD): Define to SIGCLD if SIGCLD is defined and
	SIGCHLD isn't.
	(private_strerror): Remove.
	(move_file): Remove option of moving to stdout.
	Add support for -Y, -z.
	Don't assume chars in file name are nonnegative.
	Use copy_file if rename fails due to EXDEV;
	report failure if rename fails for any other reason.
	(copy_file, makedirs): Use POSIX symbols for permissions.
	(copy_file): Open source before destination.
	(remove_prefix): New function.
	(vfprintf): New function, if !HAVE_VPRINTF.
	(afatal, apfatal, zfatal, zpfatal, errnum): Remove.
	(fatal, pfatal, say): New functions that use stdarg.
	All callers changed.
	(zask): Renamed from `ask'.  Now uses stdarg.  Output to stdout,
	and read from /dev/tty, or if that cannot be opened, from
	stderr, stdout, stdin, whichever is first a tty.
	Print "EOF" when an EOF is read.  Do not echo input.
	(sigs): New array.
	(sigset_t, sigemptyset, sigmask, sigaddset, sigismember, SIG_BLOCK,
	SIG_UNBLOCK, SIG_SETMASK, sigprocmask, sigblock, sigsetmask):
	Define substitutes if not available.
	(initial_signal_mask, signals_to_block): New vars.
	(fatal_exit_handler): New function, if !HAVE_SIGACTION.
	(set_signals, ignore_signals): Use sigaction and sigprocmask style
	signal-handling if possible; it doesn't lose signals.
	(set_signals): Default SIGCHLD to work around SysV fork+wait bug.
	(mkdir): First arg is now const *.
	(makedirs): Handle multiple adjacent slashes correctly.
	(fetchname): Do not worry about whether the file exists
	(that is now the caller's responsibility).
	Treat a sequence of one or more slashes like one slash.
	Do not unstrip leading directories if they all exist and if
	no -p option was given; POSIX doesn't allow this.
	(memcmp): Remove (now a macro in common.h).

	* version.c (copyright_string, free_software_msgid, authorship_msgid):
	New constants.
	(version): Use them.  Use program_name instead of hardwiring it.

	* patch.man: Generate date from RCS Id.
	Rewrite to match the above changes.

Fri Jul 30 02:02:51 1993  Paul Eggert  (eggert@twinsun.com)

	* configure.in (AC_HAVE_FUNCS): Add mkdir.

	* common.h (Chmod, Fputc, Write, VOID): New macros.
	(malloc, realloc): Yield `VOID *', not `char *'.

	* util.h (makedirs): Omit `striplast' argument.  Remove `aask'.

	* inp.c (plan_a): Remove fixed internal buffer.  Remove lint.

	* util.c (set_signals, ignore_signals): Trap SIGTERM, too.
	(makedirs): Removed fixed internal buffer.  Omit `striplast' argument.
	(mkdir): New function, if !HAVE_MKDIR.
	(fetchname): Remove fixed internal buffer.
	Remove lint from various functions.

	* patch.c, pch.c: Remove lint.

Thu Jul 29 20:52:07 1993  David J. MacKenzie  (djm@wookumz.gnu.ai.mit.edu)

	* Makefile.in (config.status): Run config.status --recheck, not
	configure, to get the right args passed.

Thu Jul 29 07:46:16 1993  Paul Eggert  (eggert@twinsun.com)

	* The following changes remove all remaining fixed limits on memory,
	and fix bugs in patch's handling of null bytes and files that do not
	end in newline.  `Patch' now works on binary files.

	* backupfile.c (find_backup_file_name): Don't dump core if malloc fails.

	* EXTERN.h, INTERN.h (EXITING): New macro.
	* backupfile.[ch], patch.c, pch.c: Add PARAMS to function declarations.

	* common.h (bool): Change to int, so ANSI C prototype promotion works.
	(CANVARARG): Remove varargs hack; it wasn't portable.
	(filearg): Now a pointer, not an array, so that it can be reallocated.
	(GET*, SCCSDIFF, CHECKOUT*, RCSDIFF): Quote operands to commands.
	(my_exit): Declare here.
	(BUFFERSIZE, Ctl, filemode, Fseek, Fstat, Lseek, MAXFILEC, MAXHUNKSIZE,
	Mktemp, myuid, Null, Nullch, Nullfp, Nulline, Pclose, VOIDUSED): Remove.
	All invokers changed.
	(Argc, Argv, *define[sd], last_offset, maxfuzz, noreverse, ofp,
	optind_last, rejfp, rejname): No longer externally visible; all
	definers changed.
	(INT_MAX, INT_MIN, STD*_FILENO, SEEK_SET): Define if the underlying
	system doesn't.  Include <limits.h> for this.

	* configure.in: Add limits.h, memcmp.  Delete getline.

	* inp.c (tibufsize): New variable; buffers grow as needed.
	(TIBUFSIZE_MINIMUM): New macro.
	(report_revision): New function.
	(plan_a): Do not search patch as a big string, since that fails
	if it contains null bytes.
	Prepend `./' to filenames starting with `-', for RCS and SCCS.
	If file does not match default RCS/SCCS version, go ahead and patch
	it anyway; warn about the problem but do not report a fatal error.
	(plan_b): Do not use a fixed buffer to read lines; read byte by byte
	instead, so that the lines can be arbitrarily long.  Do not search
	lines as strings, since they may contain null bytes.
	(plan_a, plan_b): Report I/O errors.

	* inp.c, inp.h (rev_in_string): Remove.
	(ifetch): Yield size of line too, since strlen no longer applies.
	(plan_a, plan_b): No longer exported.

	* patch.c (abort_hunk, apply_hunk, patch_match, similar):
	Lines may contain NUL and need not end in newline.
	(copy_till, dump_line): Insert newline if appending after partial line.
	All invokers changed.
	(main, get_some_switches, apply_hunk): Allocate *_define[ds], filearg,
	rejname dynamically.
	(make_temp): New function.
	(main): Use it.
	(main, spew_output, dump_line) Check for I/O errors.

	* pch.c (open_patch_file): Don't copy stdin to a temporary file if
	it's a regular file, since we can seek on it directly.
	(open_patch_file, skip_to, another_hunk): The patch file may contain
	NULs.
	(another_hunk): The patch file may contain lines starting with '\',
	which means the preceding line lacked a trailing newline.
	(pgetline): Rename to pget_line.
	(get_line, incomplete_line, pch_write_line): New functions.
	(pch_line_len): Return size_t, not short; lines may be very long.
	(do_ed_script): Check for I/O errors.  Allow scripts to contain
	'i' and 's' commands, too.

	* pch.h (pfp, grow_hunkmax, intuit_diff_type, next_intuit_at, skip_to,
	pfetch, pgetline): No longer exported.
	(pch_write_line): New declaration.
	(getline): Removed.

	* util.c (move_file, fetchname): Use private stat buffer, so that
	filestat isn't lost.  Check for I/O errors.
	(savestr): Use savebuf.
	(zask): Use STD*_FILENO instead of 0, 1, 2.
	(fetchname): strip_leading defaults to INT_MAX instead of 957 (!).
	(memcmp): Define if !HAVE_MEMCMP.

	* util.c, util.h (say*, fatal*, pfatal*, ask*): Delete; these
	pseudo-varargs functions weren't ANSI C.  Replace by macros
	that invoke [fs]printf directly, and invoke new functions
	[az]{say,fatal,pfatal,ask} before and after.
	(savebuf, read_fatal, write_fatal, memory_fatal, Fseek): New functions.
	(fatal*): Output trailing newline after message.  All invokers changed.

	* version.c (version): Don't exit.

	* Makefile.in (SRCS): Remove getline.c.

Thu Jul 22 15:24:24 1993  David J. MacKenzie  (djm@goldman.gnu.ai.mit.edu)

	* EXTERN.h, INTERN.h (PARAMS): Define.
	* backupfile.h, common.h, inp.h, pch.h, util.h: Use.
	* backupfile.c: Include EXTERN.h.

Wed Jul 21 13:14:05 1993  David J. MacKenzie  (djm@goldman.gnu.ai.mit.edu)

	* getline.c: New file.
	* configure.in: Check for getline (GNU libc has it).
	* pch.c: Use it instead of fgets.
	(pgetline): Renamed from pgets.  Change callers.
	* pch.h: Change decl.

	* pch.c (pgets): Tab adjusts by 8 - (indent % 8), not % 7.
	Be consistent with similar code in pch.c::intuit_diff_type.

	* common.h (MEM): Typedef removed.
	inp.c, pch.c, util.c: Use size_t instead of MEM.
	inp.c, pch.c: Use off_t.
	configure.in: Add AC_SIZE_T and AC_OFF_T.

	* common.h: Make buf a pointer and add a bufsize variable.
	* util.c, pch.c, inp.c: Replace sizeof buf with bufsize.
	* patch.c: malloc buf to bufsize bytes.

Tue Jul 20 20:40:03 1993  Paul Eggert  (eggert@twinsun.com)

	* common.h (BUFFERSIZE): Grow it to 8k too, just in case.
	(buf): Turn `buf' back into an array; making it a pointer broke
	things seriously.
	* patch.c (main): Likewise.

Tue Jul 20 20:02:40 1993  David J. MacKenzie  (djm@goldman.gnu.ai.mit.edu)

	* Move Reg[1-16] and CANVARARG decls from config.h.in to common.h.
	* acconfig.h: New file.
	* Makefile (HDRS): Add it.

Tue Jul 20 16:35:27 1993  Paul Eggert  (eggert@twinsun.com)

	* Makefile.in: Remove alloca.[co]; getopt no longer needs it.
	* configure.in (AC_ALLOCA): Remove.

	* util.c (set_signals, ignore_signals): Do nothing if SIGHUP
	and SIGINT aren't defined.

Tue Jul 20 17:59:56 1993  David J. MacKenzie  (djm@goldman.gnu.ai.mit.edu)

	* patch.c (main): Call xmalloc, not malloc.  xmalloc buf.
	* common.h: Declare xmalloc.  Make buf a pointer, not an array.

	* util.c (xmalloc): Call fatal1, not fatal.

	* common.h [MAXLINELEN]: Bump from 1k to 8k.

Thu Jul  8 19:56:16 1993  David J. MacKenzie  (djm@goldman.gnu.ai.mit.edu)

	* Makefile.in (installdirs): New target.
	(install): Use it.
	(Makefile, config.status, configure): New targets.

Wed Jul  7 13:25:40 1993  David J. MacKenzie  (djm@goldman.gnu.ai.mit.edu)

	* patch.c (get_some_switches, longopts): Recognize --help
	option, and call usage.
	(usage): New function.

Fri Jun 25 07:49:45 1993  Paul Eggert  (eggert@twinsun.com)

	* backupfile.c (find_backup_file_name): Don't use .orig if
	numbered_existing with no existing numbered backup.
	(addext):  Don't use ext if !HAVE_LONG_FILE_NAMES,
	even if it would fit.  This matches patch's historical behavior.
	(simple_backup_suffix): Default to ".orig".
	* patch.c (main): Just use that default.

Tue Jun 15 22:32:14 1993  Paul Eggert  (eggert@twinsun.com)

	* config.h.in (HAVE_ALLOCA_H): This #undef was missing.
	* Makefile.in (info, check, installcheck): New rules.

Sun Jun 13 14:31:29 1993  Paul Eggert  (eggert@twinsun.com)

	* config.h.in (index, rindex): Remove unused macro
	definitions; they get in the way when porting to AIX.
	* config.h.in, configure.in (HAVE_STRING_H): Remove unused defn.

Thu Jun 10 21:13:47 1993  Paul Eggert  (eggert@twinsun.com)

	* patchlevel.h: PATCH_VERSION 2.1.
	(The name `patch-2.0.12g12' is too long for traditional Unix.)

	* patchlevel.h (PATCH_VERSION): Renamed from PATCHLEVEL.
	Now contains the entire patch version number.
	* version.c (version): Use it.

Wed Jun  9 21:43:23 1993  Paul Eggert  (eggert@twinsun.com)

	* common.h: Remove declarations of index and rindex.
	* backupfile.c: Likewise.
	(addext, basename, dirname): Avoid rindex.

Tue Jun  8 15:24:14 1993  Paul Eggert  (eggert@twinsun.com)

	* inp.c (plan_a): Check that RCS and working files are not the
	same.  This check is needed on hosts that do not report file
	name length limits and have short limits.

Sat Jun  5 22:56:07 1993  Paul Eggert  (eggert@twinsun.com)

	* Makefile.in (.c.o): Put $(CFLAGS) after other options.
	(dist): Switch from .z to .gz.

Wed Jun  2 10:37:15 1993  Paul Eggert  (eggert@twinsun.com)

	* backupfile.c (find_backup_file_name): Initialize copy of
	file name properly.

Mon May 31 21:55:21 1993  Paul Eggert  (eggert@twinsun.com)

	* patchlevel.h: Patch level 12g11.

	* pch.c (p_Char): Renamed from p_char, which is a system type
	in Tex XD88's <sys/types.h>.

	* backupfile.c: Include "config.h" first, so that `const' is
	treated consistently in system headers.

Mon May 31 16:06:23 1993  Paul Eggert  (eggert@twinsun.com)

	* patchlevel.h: Patch level 12g10.

	* configure.in: Add AC_CONST.
	* config.h.in: Add `const'.
	* Makefile.in (.c.o): Add -DHAVE_CONFIG_H.
	(getopt.o getopt1.o): Depend on config.h.

	* util.c (xmalloc): New function; alloca.c needs this.

Mon May 31 00:49:40 1993  Paul Eggert  (eggert@twinsun.com)

	* patchlevel.h: PATCHLEVEL 12g9.

	* backupfile.c, backupfile.h (addext): New function.
	It uses pathconf(), if available, to determine maximum file
	name length.
	* patch.c (main): Use it for reject file name.
	* common.h (ORIGEXT): Moved to patch.c.
	* config.h.in (HAVE_PATHCONF): New macro.
	* configure.in: Define it.

	* Makefile.in (dist): Use gzip, not compress.

Sat May 29 09:42:18 1993  Paul Eggert  (eggert@twinsun.com)

	* patch.c (main): Use pathconf to decide reject file name.
	* common.h (REJEXT): Remove.

	* inp.c (plan_a): Don't lock the checked-out file if `patch -o'
	redirected the output elsewhere.
	* common.h (CHECKOUT_LOCKED, GET_LOCKED): New macros.  GET and
	CHECKOUT now just checkout unlocked copies.

Fri May 28 08:44:50 1993  Paul Eggert  (eggert@twinsun.com)

	* backupfile.c (basename): Define even if NODIR isn't defined.
	* patch.c (main): Ask just once to apply a reversed patch.

Tue Nov 24 08:09:04 1992  David J. MacKenzie  (djm@goldman.gnu.ai.mit.edu)

	* config.h.in, common.h: Use HAVE_FCNTL_H and HAVE_STRING_H
	instead of USG.

	* backupfile.c: Use SYSDIR and NDIR instead of USG.
	Define direct as dirent, not vice-versa.

Wed Sep 16 17:11:48 1992  David J. MacKenzie  (djm@nutrimat.gnu.ai.mit.edu)

	* patch.c (get_some_switches): optc should be int, not char.

Tue Sep 15 00:36:46 1992  David J. MacKenzie  (djm@nutrimat.gnu.ai.mit.edu)

	* patchlevel.h: PATCHLEVEL 12g8.

Mon Sep 14 22:01:23 1992  David J. MacKenzie  (djm@nutrimat.gnu.ai.mit.edu)

	* Makefile.in: Add uninstall target.

	* util.c (fatal, pfatal): Add some asterisks to make fatal
	messages stand out more.

Tue Aug 25 22:13:36 1992  David J. MacKenzie  (djm@nutrimat.gnu.ai.mit.edu)

	* patch.c (main, get_some_switches), common.h, inp.c (plan_a,
	plan_b), pch.c (there_is_another_patch): Add -t --batch
	option, similar to -f --force.

Mon Jul 27 11:27:07 1992  David J. MacKenzie  (djm@nutrimat.gnu.ai.mit.edu)

	* common.h: Define SCCSDIFF and RCSDIFF.
	* inp.c (plan_a): Use them to make sure it's safe to check out
	the default RCS or SCCS version.
	From Paul Eggert.

Mon Jul 20 14:10:32 1992  David J. MacKenzie  (djm@nutrimat.gnu.ai.mit.edu)

	* util.h: Declare basename.
	* inp.c (plan_a), util.c (fetchname): Use it to isolate the
	leading path when testing for RCS and SCCS files.

Fri Jul 10 16:03:23 1992  David J. MacKenzie  (djm@nutrimat.gnu.ai.mit.edu)

	* util.c (makedirs): Only make the directories that don't exist.
	From chip@tct.com (Chip Salzenberg).

Wed Jul  8 01:20:56 1992  David J. MacKenzie  (djm@nutrimat.gnu.ai.mit.edu)

	* patch.c (main): Open ofp after checking for ed script.
	Close ofp and rejfp before trying plan B.
	From epang@sfu.ca (Eugene Pang).

	* util.c (fatal, pfatal): Print "patch: " before message.
	* pch.c, inp.c, patch.c, util.c: Remove "patch: " from the
	callers that had it.

	* common.h (myuid): New variable.
	* patch.c (main): Initialize it.
	* inp.c (myuid): Function removed.
	(plan_a): Use the variable, not the function.

	* patch.c: Add back -E --remove-empty-files option.

Tue Jul  7 23:19:28 1992  David J. MacKenzie  (djm@nutrimat.gnu.ai.mit.edu)

	* inp.c (myuid): New function.
	(plan_a): Call it.  Optimize stat calls.  Be smarter about
	detecting checked out RCS and SCCS files.
	From Paul Eggert (eggert@twinsun.com).

	* inp.c, util.c, patch.c: Don't bother checking for stat() > 0.

Mon Jul  6 13:01:52 1992  David J. MacKenzie  (djm@nutrimat.gnu.ai.mit.edu)

	* util.c (move_file): Use rename instead of link and copying.

	* util.c (pfatal): New function.
	* util.h: Declare it and pfatal[1-4] macros.
	* various files: Use it instead of fatal where appropriate.

	* common.h, patch.c: Replace Arg[cv]_last with optind_last.

	* patch.c (main, get_some_switches): Use getopt_long.  Update
	usage message.
	(nextarg): Function removed.

	* Rename FLEXFILENAMES to HAVE_LONG_FILE_NAMES,
	VOIDSIG to RETSIGTYPE.

	* backupfile.c, common.h: Use STDC header files if available.
	backupfile.h: Declare get_version.

	* COPYING, COPYING.LIB, INSTALL, Makefile.in, alloca.c,
	config.h.in, configure, configure.in, getopt.[ch], getopt1.c,
	rename.c: New files.
	* Configure, MANIFEST, Makefile.SH, config.H, config.h.SH,
	malloc.c: Files removed.

	* version.c (version): Don't print the RCS stuff, since we're
	not updating it regularly.

	* patchlevel.h: PATCHLEVEL 12u7.

	* Makefile.SH (dist): New target.
	Makedist: File removed.

	* inp.c (plan_a): Check whether the user can write to the
	file, not whether anyone can write to the file.

Sat Jul  4 00:06:58 1992  David J. MacKenzie  (djm@nutrimat.gnu.ai.mit.edu)

	* inp.c (plan_a): Try to check out read-only files from RCS or SCCS.

	* util.c (move_file): If backing up by linking fails, try copying.
	From cek@sdc.boeing.com (Conrad Kimball).

	* patch.c (get_some_switches): Eliminate -E option; always
	remove empty output files.

	* util.c (fetchname): Only undo slash removal for relative
	paths if -p was not given.

	* Makefile.sh: Add mostlyclean target.

Fri Jul  3 23:48:14 1992  David J. MacKenzie  (djm@nutrimat.gnu.ai.mit.edu)

	* util.c (fetchname): Accept whitespace between `Index:' and filename.
	Also plug a small memory leak for diffs against /dev/null.
	From eggert@twinsun.com (Paul Eggert).

	* common.h: Don't define TRUE and FALSE if already defined.
	From phk@data.fls.dk (Poul-Henning Kamp).

Wed Apr 29 10:19:33 1992  David J. MacKenzie  (djm@churchy.gnu.ai.mit.edu)

	* backupfile.c (get_version): Exit if given a bad backup type.

Fri Mar 27 09:57:14 1992  Karl Berry  (karl at hayley)

	* common.h (S_ISDIR, S_ISREG): define these.
	* inp.c (plan_a): use S_ISREG, not S_IFREG.
	* util.c (fetchname): use S_ISDIR, not S_IFDIR.

Mon Mar 16 14:10:42 1992  David J. MacKenzie  (djm@wookumz.gnu.ai.mit.edu)

	* patchlevel.h: PATCHLEVEL 12u6.

Sat Mar 14 13:13:29 1992  David J. MacKenzie  (djm at frob.eng.umd.edu)

	* Configure, config.h.SH: Check for directory header and unistd.h.

	* patch.c (main): If -E was given and output file is empty after
	patching, remove it.
	(get_some_switches): Recognize -E option.

	* patch.c (copy_till): Make garbled output an error, not a warning
	that doesn't change the exit status.

	* common.h: Protect against system declarations of malloc and realloc.

	* Makedist: Add backupfile.[ch].

	* Configure: Look for C library where NeXT and SVR4 put it.
	Look in /usr/ucb after /bin and /usr/bin for utilities,
	and look in /usr/ccs/bin, to make SVR4 happier.
	Recognize m68k predefine.

	* util.c (fetchname): Test of stat return value was backward.
	From csss@scheme.cs.ubc.ca.

	* version.c (version): Exit with status 0, not 1.

	* Makefile.SH: Add backupfile.[cho].
	* patch.c (main): Initialize backup file generation.
	(get_some_switches): Add -V option.
	* common.h, util,c, patch.c: Replace origext with simple_backup_suffix.
	* util.c (move_file): Use find_backup_file_name.

Tue Dec  3 11:27:16 1991  David J. MacKenzie  (djm at wookumz.gnu.ai.mit.edu)

	* patchlevel.h: PATCHLEVEL 12u5.

	* Makefile.SH: Change clean, distclean, and realclean targets a
	little so they agree with the GNU coding standards.
	Add Makefile to addedbyconf, so distclean removes it.

	* Configure: Recognize Domain/OS C library in /lib/libc.
	From mmuegel@mot.com (Michael S. Muegel).

	* pch.c: Fixes from Wayne Davison:
	Patch now accepts no-context context diffs that are
	specified with an assumed one line hunk (e.g.  "*** 10 ****").
	Fixed a bug in both context and unified diff processing that would
	put a zero-context hunk in the wrong place (one line too soon).
	Fixed a minor problem with p_max in unified diffs where it would
	set p_max to hunkmax unnecessarily (the only adverse effect was to
	not supply empty lines at eof by assuming they were truncated).

Tue Jul  2 03:25:51 1991  David J. MacKenzie  (djm at geech.gnu.ai.mit.edu)

	* Configure: Check for signal declaration in
	/usr/include/sys/signal.h as well as /usr/include/signal.h.

	* Configure, common.h, config.h.SH: Comment out the sprintf
	declaration and tests to determine its return value type.  It
	conflicts with ANSI C systems' prototypes in stdio.h and the
	return value of sprintf is never used anyway -- it's always cast
	to void.

Thu Jun 27 13:05:32 1991  David J. MacKenzie  (djm at churchy.gnu.ai.mit.edu)

	* patchlevel.h: PATCHLEVEL 12u4.

Thu Feb 21 15:18:14 1991  David J. MacKenzie  (djm at geech.ai.mit.edu)

	* pch.c (another_hunk): Fix off by 1 error.  From
	iverson@xstor.com (Tim Iverson).

Sun Jan 20 20:18:58 1991  David J. MacKenzie  (djm at geech.ai.mit.edu)

	* Makefile.SH (all): Don't make a dummy `all' file.

	* patchlevel.h: PATCHLEVEL 12u3.

	* patch.c (nextarg): New function.
	(get_some_switches): Use it, to prevent dereferencing a null
	pointer if an option that takes an arg is not given one (is last
	on the command line).  From Paul Eggert.

	* pch.c (another_hunk): Fix from Wayne Davison to recognize
	single-line hunks in unified diffs (with a single line number
	instead of a range).

	* inp.c (rev_in_string): Don't use `s' before defining it.  From
	Wayne Davison.

Mon Jan  7 06:25:11 1991  David J. MacKenzie  (djm at geech.ai.mit.edu)

	* patchlevel.h: PATCHLEVEL 12u2.

	* pch.c (intuit_diff_type): Recognize `+++' in diff headers, for
	unified diff format.  From unidiff patch 1.

Mon Dec  3 00:14:25 1990  David J. MacKenzie  (djm at albert.ai.mit.edu)

	* patch.c (get_some_switches): Make the usage message more
	informative.

Sun Dec  2 23:20:18 1990  David J. MacKenzie  (djm at albert.ai.mit.edu)

	* Configure: When checking for C preprocessor, look for 'abc.*xyz'
	instead of 'abc.xyz', so ANSI C preprocessors work.

	* Apply fix for -D from ksb@mentor.cc.purdue.edu (Kevin Braunsdorf).

1990-05-01  Wayne Davison  <davison@dri.com>
	* patch.c, pch.c: unidiff support added

Wed Mar  7 23:47:25 1990  Jim Kingdon  (kingdon at pogo.ai.mit.edu)

	* pch.c: Call malformed instead of goto malformed
	(just allows easier debugging).

Tue Jan 23 21:27:00 1990  Jim Kingdon  (kingdon at pogo.ai.mit.edu)

	* common.h (TMP*NAME): Make these char *, not char [].
	patch.c (main): Use TMPDIR (if present) to set TMP*NAME.
	common.h: Declare getenv.

Sun Dec 17 17:29:48 1989  Jim Kingdon  (kingdon at hobbes.ai.mit.edu)

	* patch.c (reverse_flag_specified): New variable.
	(get_some_switches, reinitialize_almost_everything): Use it.

1988-06-22  Larry Wall  <sdcrdcf!lwall>
	patch12:
	* common.h: sprintf was declared wrong
	* patch.c: rindex() wasn't declared
	* patch.man: now avoids Bell System Logo

1988-06-03  Larry Wall  <sdcrdcf!lwall>
	patch10:
	* common.h: support for shorter extensions.
	* inp.c: made a little smarter about sccs files
	* patch.c: exit code improved.
	better support for non-flexfilenames.
	* patch.man: -B switch was contributed.
	* pch.c: Can now find patches in shar scripts.
	Hunks that swapped and then swapped back could core dump.

1987-06-04  Larry Wall  <sdcrdcf!lwall>
	* pch.c: pch_swap didn't swap p_bfake and p_efake.

1987-02-16  Larry Wall  <sdcrdcf!lwall>
	* patch.c: Short replacement caused spurious "Out of sync" message.

1987-01-30  Larry Wall  <sdcrdcf!lwall>
	* patch.c: Improved diagnostic on sync error.
	Moved do_ed_script() to pch.c.
	* pch.c: Improved responses to mangled patches.
	* pch.h: Added do_ed_script().

1987-01-05  Larry Wall  <sdcrdcf!lwall>
	* pch.c: New-style context diffs caused double call to free().

1986-11-21  Larry Wall  <sdcrdcf!lwall>
	* patch.c: Fuzz factor caused offset of installed lines.

1986-11-14  Larry Wall  <sdcrdcf!lwall>
	* pch.c: Fixed problem where a long pattern wouldn't grow the hunk.
	Also restored p_input_line when backtracking so error messages are
	right.

1986-11-03  Larry Wall  <sdcrdcf!lwall>
	* pch.c: New-style delete triggers spurious assertion error.

1986-10-29  Larry Wall  <sdcrdcf!lwall>
	* patch.c: Backwards search could terminate prematurely.
	* pch.c: Could falsely report new-style context diff.

1986-09-17  Larry Wall  <sdcrdcf!lwall>
	* common.h, inp.c, inp.h, patch.c, patch.man, pch.c, pch.h,
	util.h, version.c, version.h:  Baseline for netwide release.

1986-08-01  Larry Wall  <sdcrdcf!lwall>
	* patch.c: Fixes for machines that can't vararg.
	Added fuzz factor.  Generalized -p.  General cleanup.
	Changed some %d's to %ld's.  Linted.
	* patch.man: Documented -v, -p, -F.
	Added notes to patch senders.

1985-08-15  van%ucbmonet@berkeley
	Changes for 4.3bsd diff -c.

1985-03-26  Larry Wall  <sdcrdcf!lwall>
	* patch.c: Frozen.
	* patch.man: Frozen.

1985-03-12  Larry Wall  <sdcrdcf!lwall>
	* patch.c: Now checks for normalness of file to patch.
	Check i_ptr and i_womp to make sure they aren't null before freeing.
	Also allow ed output to be suppressed.
	Changed pfp->_file to fileno(pfp).
	Added -p option from jromine@uci-750a.
	Added -D (#ifdef) option from joe@fluke.
	* patch.man: Documented -p, -D.

1984-12-06  Larry Wall  <sdcrdcf!lwall>
	* patch.c: Made smarter about SCCS subdirectories.

1984-12-05  Larry Wall  <sdcrdcf!lwall>
	* patch.c: Added -l switch to do loose string comparison.
	* patch.man: Added -l switch, and noted bistability bug.

1984-12-04  Larry Wall  <sdcrdcf!lwall>
	Branch for sdcrdcf changes.
	* patch.c: Failed hunk count not reset on multiple patch file.
	* patch.man: Baseline version.

1984-11-29  Larry Wall  <sdcrdcf!lwall>
	* patch.c: Linted.  Identifiers uniquified.  Fixed i_ptr malloc() bug.
	Fixed multiple calls to mktemp().  Will now work on machines that can
	only read 32767 chars.  Added -R option for diffs with new and old
	swapped.  Various cosmetic changes.

1984-11-09  Larry Wall  <sdcrdcf!lwall>
	* patch.c: Initial revision


Copyright 1989-2025 Free Software Foundation, Inc.
Copyright 1984-1988 Larry Wall.

This file is part of GNU Patch.

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.