changelog

这是一个同样来自贝尔实验室的和UNIX有着渊源的操作系统, 其简洁的设计和实现易于我们学习和理解

Tue Aug 25 22:13:36 1992  David J. MacKenzie  ([e-mail])

	* 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  ([e-mail])

	* 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  ([e-mail])

	* 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  ([e-mail])

	* util.c (makedirs): Only make the directories that don't exist.
	From [e-mail] (Chip Salzenberg).

Wed Jul  8 01:20:56 1992  David J. MacKenzie  ([e-mail])

	* patch.c (main): Open ofp after checking for ed script.
	Close ofp and rejfp before trying plan B.
	From [e-mail] (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  ([e-mail])

	* 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 ([e-mail]).

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

Mon Jul  6 13:01:52 1992  David J. MacKenzie  ([e-mail])

	* 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  ([e-mail])

	* 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 [e-mail] (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  ([e-mail])

	* util.c (fetchname): Accept whitespace between `Index:' and filename.
	Also plug a small memory leak for diffs against /dev/null.
	From [e-mail] (Paul Eggert).

	* common.h: Don't define TRUE and FALSE if already defined.
	From [e-mail] (Poul-Henning Kamp).

Wed Apr 29 10:19:33 1992  David J. MacKenzie  ([e-mail])

	* 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  ([e-mail])

	* 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 [e-mail].

	* 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 [e-mail] (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
	[e-mail] (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 [e-mail] (Kevin Braunsdorf).

1990-05-01  Wayne Davison  <[e-mail]>
	* 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