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ChangeLog
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2016-08-20 Jim Meyering <meyering@fb.com>
version 3.5
* NEWS: Record release date.
2016-08-16 Jim Meyering <meyering@fb.com>
build: arrange to build with -fno-common, when possible
* configure.ac (WERROR_CFLAGS): Add -fno-common, when possible.
This would have prevented the duplicate definition of
presume_output_tty that was fixed in v3.4-10-gc2dc91f.
2016-08-16 Hanno Böck <hanno@hboeck.de>
diff: avoid duplicate definition of presume_output_tty
* src/util.c (presume_output_tty): Remove this definition.
The other is in diff.h. Reported in https://bugs.gnu.org/24248
2016-08-14 Jim Meyering <meyering@fb.com>
gnulib: update to latest
tests: diff3: work around missing seq on some systems
* tests/diff3 (seq): Provide a seq replacement function,
since at least AIX, SunOS 5.10, OpenBSD-5.8 lack it.
Reported by Assaf Gordon in https://bugs.gnu.org/24227#8
2016-08-13 Jim Meyering <meyering@fb.com>
diff3: fix leaks, for real
* src/diff3.c (struct diff_block)[lint]: Add member, n2.
(free_diff_block, next_to_n2): New functions.
* tests/diff3: Add more test coverage.
maint: require that commit messages be of a certain form
* bootstrap.conf (bootstrap_epilogue): Merge from coreutils, so that
a local commit hook will now help enforce consistent commit messages.
* Makefile.am (check-git-hook-script-sync): New rule, largely copied
from coreutils.
* scripts/git-hooks/commit-msg: New file, from coreutils, but
with adapted list of program names.
* scripts/git-hooks/applypatch-msg: New file, from git.
* scripts/git-hooks/pre-applypatch: Likewise.
* scripts/git-hooks/pre-commit: Likewise.
2016-08-13 Bastian Beischer <bastian.beischer@rwth-aachen.de>
diff3: fix heap use-after-free; add minimal diff3 test coverage
Commit v3.3-42-g3b74a90, "FIXME: src/diff3: plug a leak" added an
invalid use of free, leading to use-after-free in nearly any invocation
of diff3. Revert that commit.
* NEWS (Bug fixes): Mention it.
* tests/diff3: New file, to add minimal test coverage.
* tests/Makefile.am (TESTS): Add it.
Reported by Bastian Beischer in http://bugs.gnu.org/24210
2016-08-13 Jim Meyering <meyering@fb.com>
build: ignore texinfo build artifacts
* .gitignore: Ignore texinfo artifacts in doc/.
maint: diff3: remove an unreachable statement
* src/diff3.c (main): Remove unreachable "return" after exit from main.
2016-08-08 Jim Meyering <meyering@fb.com>
diff: disable colorization for TERM=dumb
* src/diff.c (main): With --color or --color=auto, when TERM is
"dumb", disable colorization. Suggested by Daniel Colascione.
* NEWS (Bug fixes): Mention it.
* tests/colors: Add a test that would fail without this change,
yet passes with it.
maint: post-release administrivia
* NEWS: Add header line for next release.
* .prev-version: Record previous version.
* cfg.mk (old_NEWS_hash): Auto-update.
version 3.4
* NEWS: Record release date.
2016-08-06 Jim Meyering <meyering@fb.com>
gnulib: update to latest
tests: tweak built_programs definition
* tests/Makefile.am (built_programs): Adjust to work around what
may be a problem due to interaction between Solaris 10's /bin/sh
and an old version of GNU make. Reported by Dagobert Michelsen
in https https://bugs.gnu.org/24137.
2016-08-02 Jim Meyering <meyering@fb.com>
gnulib: update to latest
tests: skip a /proc/self-dependent test on the Hurd
* tests/brief-vs-stat-zero-kernel-lies: The Hurd's /proc/self
is not useful, so detect that and skip the test that requires it.
Reported by Assaf Gordon in https://debbugs.gnu.org/24121#29
2016-08-01 Jim Meyering <meyering@fb.com>
tests/colors: fix portability problem with touch --date
* tests/colors (epoch): Don't use GNU touch's --date=$epoch option.
Use the portable -t 197001010000.00.
Reported by Assaf Gordon in https://debbugs.gnu.org/24121#8
build: Solaris 9: avoid link failure due to isblank use
* bootstrap.conf (gnulib_modules): Add isblank, to avoid a link
error on Solaris 9 Sparc. Reported by Dagobert Michelsen.
test: improve test infrastructure
* tests/envvar-check: New file, copied from grep, with the addition
of the EDITOR and GREP_OPTIONS envvar names.
* tests/Makefile.am (EXTRA_DIST): Add it.
(TESTS_ENVIRONMENT): Revamp, to be more like that of grep.
2016-07-31 Jim Meyering <meyering@fb.com>
maint: remove gl/lib/reg*.c.diff; no longer needed
* gl/lib/regcomp.c.diff: Remove file, now that gnulib's
regcomp.c compiles regex.c with -Wno-unused-parameter.
* gl/lib/regex_internal.c.diff: This file induced a change to ensure
that the "Idx" type was unsigned and to remove a few "VAR < 0"
comparisons. These days, it is probably fine to stay in sync with
gnulib/glibc's copies
of these files, so remove these patches, too.
* gl/lib/regexec.c.diff: Likewise.
Prompted by a report by Assaf Gordon and a suggestion from Paul Eggert.
tests: colors: fix a portability problem and work around a shell bug
* tests/colors (e): Fix a portability bug: use printf '\033'
rather than '\e' to generate the required byte sequence, since
for some shells (at least dash 0.5.8), the latter doesn't work.
Work around a shell bug whereby "local tab=$(printf '\t')"
would result in an empty value for "$tab": hoist each "tab"
definition up/out of its function to global scope.
Reported by Assaf Gordon in http://debbugs.gnu.org/24116#8
2016-07-23 Jim Meyering <meyering@fb.com>
gnulib: update to latest; and tests/init.sh
* gnulib: Update to latest.
* init.sh: Update from gnulib.
2016-05-30 Jim Meyering <meyering@fb.com>
maint: arrange for "make distcheck" to work with unreleased automake
* dist-check.mk (my-distcheck): Remove all .deps directories
before performing the recursive comparison.
2016-05-24 Glenn Morris <rgm@gnu.org>
doc: fix a reference to emacs' emerge node
* doc/diffutils.texi (Interactive Merging): Correct a reference to
emacs' emerge node: s/emerge/Emerge/.
This addresses http://debbugs.gnu.org/23613
2016-04-30 Jim Meyering <meyering@fb.com>
maint: arrange for better URLs in generated announcement message
* cfg.mk (url_dir_list): Define. I had been correcting the generated
URLs by hand, just before the announcement. This is better.
2016-03-15 Jim Meyering <meyering@fb.com>
maint: don't ignore gitlog-to-changelog failure
* Makefile.am (gen-ChangeLog): Don't ignore failure of
gitlog-to-changelog. This syncs to coreutils' copy of this rule.
2016-03-06 Giuseppe Scrivano <gscrivano@gnu.org>
diff: --color: fix an infinite recursion bug
* src/diff.h (presume_output_tty): New extern variable.
* src/diff.c (PRESUME_OUTPUT_TTY_OPTION): New enum.
(group_format_option): Add '-presume-output-tty'.
(main): Handle PRESUME_OUTPUT_TTY_OPTION.
* src/util.c: New variable `presume_output_tty'.
(check_color_output): Handle presume_output_tty.
(set_color_context): Call process_signals only when color_context is
not RESET_CONTEXT.
* tests/colors: Check that diff doesn't crash when interrupted
in the middle of a color sequence.
Reported by Gisle Vanem in http://debbugs.gnu.org/22067
2016-01-31 Jim Meyering <meyering@fb.com>
maint: update prereq version of gettext
* configure.ac: Increase designated gettext version to 0.19.2
* bootstrap.conf (buildreq): Likewise.
Remove now-unnecessary code to remove gettext-provided files.
gnulib: update to latest
2016-01-01 Jim Meyering <meyering@fb.com>
FIXME: src/diff3: plug a leak
2016-01-01 Jim Meyering <meyering@fb.com>
maint: update copyright year, bootstrap, init.sh
Run "make update-copyright" and then...
* gnulib: Update to latest.
* tests/init.sh: Update from gnulib.
* bootstrap: Likewise.
2015-12-06 Jim Meyering <meyering@fb.com>
diff --brief no longer mistakenly reports diff. with 0-sized /proc/ files
Normally, it is safe to assume two regular files are different when
their st_size values are different. However, that assumption may
be invalid if either value is zero, as happens with files on Linux
/proc and /sys file systems. Since skipping this optimization will
usually cost very little (one read syscall, to read zero bytes),
it is fine to accommodate those unusual files.
* src/analyze.c (diff_2_files): Do not assume regular files differ
just because their st_size values differ when one or more is 0.
* src/diff.c (compare_files): Likewise.
* tests/brief-vs-proc-stat-zero: New test.
* tests/Makefile.am: Add it.
* NEWS (Bug fixes): Describe it.
Reported by Stephan Müller in http://debbugs.gnu.org/21942
tests: arrange to print any skipped-test explanation to tty, too
I noticed that when a test was skipped, the reason was not printed.
This fixes it. In coreutils, this variable is set in init.cfg,
but there is no point in putting the definition so far from the
code that chooses the file descriptor number in tests/Makefile.am.
* tests/Makefile.am (TESTS_ENVIRONMENT) [stderr_fileno_]: Define
here (to 9), right next to the companion "9>&2".
2015-11-29 Jim Meyering <meyering@fb.com>
build: add gperf to the list of required programs
* bootstrap.conf (buildreq): Add gperf to the list.
Reported by Stephan Müller in http://debbugs.gnu.org/21945
2015-11-29 Giuseppe Scrivano <gscrivano@gnu.org>
tests: Add tests for --color and --palette
* tests/colors: New file.
* tests/Makefile.am (TESTS): Add colors.
doc: mention --color and --palette in NEWS
diff: add --palette
* bootstrap (gnulib_modules): Add 'argmatch'.
* doc/diffutils.texi: Add documentation for --palette
* src/diff.h (set_color_palette): New prototype.
* src/diff.c (set_color_palette): New function.
(color_palette): New variable.
* src/utils.c: Include "argmatch.h".
(struct bin_str): New struct.
(struct color_ext_type): New struct.
(color_indicator): New array.
(indicator_name): New array.
(indicator_no): New enum.
(parse_state): New enum.
(put_indicator): New function.
(get_funky_string): New function. Copied from coreutils ls.
(parse_diff_color): New function. Copied from coreutils ls
"parse_ls_color" function.
(set_color_context): Use put_indicator instead of directly
outputting the sequence.
* po/POTFILES.in: Add 'lib/argmatch.c'
diff: add support for --color
* doc/diffutils.texi (diff Options): Add documentation for --color.
Copied from coreutils ls --color.
* src/context.c (pr_unidiff_hunk): Set the color context.
(print_context_header): Likewise.
(pr_context_hunk): Likewise.
* src/diff.h (enum colors_style): New enum to record when to use colors.
(colors_style): New variable to memorize the argument value.
(set_color_context): Add function definition.
* src/diff.c: : Define COLOR_OPTION.
(specify_colors_style): New function.
(longopts): Add --color.
(main): Handle --color argument.
(option_help_msgid): Add usage string for --color.
* src/normal.c (print_normal_hunk): Set the color context.
* src/side.c (print_1sdiff_line): Likewise.
* src/util.c (print_1_line_nl): New function.
(print_1_line): Make it a wrapper of 'print_1_line_nl'.
(colors_enabled): New boolean variable.
(begin_output): Call check_color_output once the output file is
configured.
(output_1_line): Periodically call `process_signals'.
(caught_signals): New sigset_t.
(colors_enabled): New boolean variable.
(interrupt_signal): New sig_atomic_t.
(stop_signal_count): New sig_atomic_t.
(check_color_output): New function.
(install_signal_handlers): Likewise. Copied from coreutils ls.
(process_signals): Likewise. Copied from coreutils ls.
(set_color_context): New function.
(sighandler): Likewise. Copied from coreutils ls.
(stophandler): Likewise. Copied from coreutils ls.
2015-09-24 Andreas Grünbacher <agruen@gnu.org>
diff: Improve help text of option --label
* src/diff.c (option_help_msgid): Improve help text of option --label.
2015-09-01 Jim Meyering <meyering@fb.com>
build: correct man-page generation rule
The PATH was set incorrectly, so that the diff used by
help2man was the one from $PATH, rather than the just-built
one.
* man/Makefile.am (bin_dir): New variable, to...
(dist_man1_MANS): ...prepend ../src to PATH, not just "..".
Also, add a test to ensure that each $(bin_dir)/$$base is
executable, so this doesn't happen again.
In http://debbugs.gnu.org/21023, Rodrigo Valiña
Gutiérrez reported that diff.1 from the diffutils-3.3 tarball
contained no description of the then-new --no-dereference option.
2015-07-10 Jim Meyering <meyering@fb.com>
doc: --no-dereference: improve wording/description
* doc/diffutils.texi (Comparing Directories): Correct grammar.
(diff Options) [--no-dereference]: Say a little more.
2015-01-01 Jim Meyering <meyering@fb.com>
maint: update copyright year ranges to include 2015; update gnulib
2014-12-12 KO Myung-Hun <komh@chollian.net>
diff: skip test if seek is not possible on OS/2 kLIBC
This fixes the problem that 'diff - file' and 'cat file | diff - file'
fail due to a seek failure with a message 'diff.exe: -: Invalid seek',
because seek does not work on stdin and a pipe on OS/2 kLIBC.
* src/io.c (sip): Set skip_test to true if seek is not possible on
OS/2 kLIBC.
2014-12-09 Jim Meyering <meyering@fb.com>
gnulib: update to latest
2014-12-09 KO Myung-Hun <komh78@gmail.com>
build: double-quote use of $PATH
* man/Makefile.am (dist_man1_MANS): On OS/2, PATH_SEPARATOR is ';',
but unquoted, that is interpreted as the shell's statement
terminator. Quote it.
2014-10-27 Paul Eggert <eggert@cs.ucla.edu>
diff: fix integer overflow problem with --tabsize
Reported by Tobias Stoeckmann in: http://bugs.gnu.org/18857
* src/diff.c (main): Don't overflow if INTMAX_MAX / 2 < tabsize.
* tests/bignum: New file, to test for this bug.
* tests/Makefile.am (TESTS): Add it.
2014-09-03 Paul Eggert <eggert@cs.ucla.edu>
doc: mention diff -B fix in NEWS
diff: fix bug with diff -B and incomplete lines
Reported by Navin Kabra via Eric Blake in:
http://bugs.gnu.org/18402
* src/util.c (analyze_hunk): Don't mishandle incomplete
lines at end of file.
* tests/no-newline-at-eof: Test for the bug.
diff: fix performance bug with prefix computation
* src/io.c (find_identical_ends): Fix performance bug:
the test for when the prefix was needed messed up by
the 2002-02-28 integer-overflow fixes, causing performance to be
worse than it needed to be.
2014-08-23 Jim Meyering <meyering@fb.com>
gnulib: update to latest, as well as bootstrap
maint: update copyright year range in texinfo documentation
* doc/diffutils.texi: Update copyright.
2014-04-15 Jim Meyering <meyering@fb.com>
maint: update bug-reporting address
* README: Change bug-gnu-utils@... to bug-diffutils@gnu.org.
* doc/diffutils.texi: Likewise.
Reported by Jamie Landeg Jones.
2014-03-26 Paul Eggert <eggert@penguin.cs.ucla.edu>
diff: fix two "..." typos in --help output
* src/diff.c (option_help_msgid): Remove two "..." typos (Bug#17102).
2014-03-25 Paul Eggert <eggert@cs.ucla.edu>
doc: improve documentation about reading and stdin
See Bug#17075.
* doc/diffutils.texi (Comparison): Say that files need not be read.
(Invoking diff): Remove confusing remark about 'diff - -'.
It's not that useful, and it's not portable anyway.
2014-02-24 Paul Eggert <eggert@cs.ucla.edu>
diff, sdiff: minor integer overflow fixes
* src/context.c (find_hunk):
Simplify, now that 2 * context + 1 cannot overflow.
* src/diff.c (main):
* src/sdiff.c (interact):
Don't rely on undefined behavior on signed integer overflow.
* src/diff.c (main): Don't let contexts exceed CONTEXT_MAX.
* src/system.h (CONTEXT_MAX): New macro.
diff: fix bug with -I and overlapping hunks
Problem reported by Vincent Lefevre in <http://bugs.gnu.org/16864>.
* src/context.c (find_hunk): Threshold is CONTEXT only if
the second change is ignorable.
* tests/ignore-matching-lines: New test.
* tests/Makefile.am (TESTS): Add it.
2014-02-23 Paul Eggert <eggert@cs.ucla.edu>
diff: remove TOO_EXPENSIVE heuristic
Problem reported by Vincent Lefevre in <http://bugs.gnu.org/16848>.
The simplest solution is to remove the TOO_EXPENSIVE heuristic
that I added to GNU diff in 1993. Although appropriate for
circa-1993 hardware, these days the heuristic seems to be more
trouble than it's worth.
* NEWS: Document this.
* doc/diffutils.texi (Overview): Modernize citations.
Remove mention of TOO_EXPENSIVE heuristic.
* src/analyze.c (diff_2_files): Adjust to TOO_EXPENSIVE-related
API changes in gnulib's diffseq module.
build: update gnulib submodule to latest
2014-01-31 Paul Eggert <eggert@cs.ucla.edu>
diff: exit with status 1, not 2, when binary files differ
Problem reported by Vincent Lefevre in <http://bugs.gnu.org/16608>.
* NEWS:
* doc/diffutils.texi (Binary, Invoking diff): Document this.
* src/analyze.c (briefly_report): Return void, not int.
All uses changed. Do not futz with exit status. Simplify.
* tests/binary: Adjust to match new behavior.
2013-09-26 Paul Eggert <eggert@cs.ucla.edu>
build: omit -Wsuggest-attribute=pure for lib
* configure.ac (WARN_CFLAGS): Omit -Wsuggest-attribute=pure
when compiling the lib subdirectory. Reported for Fedora 19
by Eric Blake in <http://bugs.gnu.org/15463>.
2013-08-22 Paul Eggert <eggert@cs.ucla.edu>
cmp, diff, sdiff: tune by using rawmemchr
On my platform (AMD Phenom II X4 910e, Fedora 17 x86-64), this sped up
'cmp -n 8GiB /dev/full /dev/zero' by a factor of 3.8, and
'cmp -sn 8GiB /dev/full /dev/zero' by a factor of 1.8.
* bootstrap.conf (gnulib_modules): Add rawmemchr.
* src/cmp.c (cmp): Optimize the common case where buffers are the same,
by using count_newlines rather than block_compare_and_count.
(block_compare_and_count): Remove.
(count_newlines): New function.
* src/cmp.c (count_newlines):
* src/io.c (prepare_text):
* src/sdiff.c (lf_copy, lf_skip, lf_snarf):
Use rawmemchr instead of memchr, for speed.
2013-08-12 Paul Eggert <eggert@cs.ucla.edu>
cmp: tune 'cmp a b' for GCC x86
Performance problem reported by David Balažic in:
http://lists.gnu.org/archive/html/bug-diffutils/2013-08/msg00013.html
* src/system.h (word): Make it size_t, not uintmax_t.
This sped up plain cmp 90% on my tests (GCC 4.8.1, x86).
2013-07-06 Paul Eggert <eggert@cs.ucla.edu>
build: update gnulib submodule to latest
2013-05-06 Stefano Lattarini <stefano.lattarini@gmail.com>
build: enable 'subdir-objects' automake option
The future major Automake version (2.0, ETA at least one year from now)
might enable that option unconditionally, so better get prepared in due
time.
* configure.ac (AM_INIT_AUTOMAKE): Adjust.
(AM_PROG_CC_C_O): New, required by Automake up to 1.13.x when the
'subdir-objects' is in use.
2013-04-28 Paul Eggert <eggert@cs.ucla.edu>
build: update gnulib submodule to latest
2013-04-03 Paul Eggert <eggert@cs.ucla.edu>
diff: fix bug with Asian file names
Problem reported by Errembault Philippe in:
http://lists.gnu.org/archive/html/bug-diffutils/2013-03/msg00012.html
* NEWS: Document this.
* src/dir.c (compare_names): Fall back on file_name_cmp if
compare_collated returns 0, unless ignoring file name case.
(diff_dirs): Don't bother with the O(N**2) stuff unless ignoring
file name case.
* tests/Makefile.am (TESTS): Add strcoll-0-names.
* tests/strcoll-0-names: New file.
diff: remove unnecessary decl
* src/dir.c (compare_names_for_qsort): Remove declaration.
Not needed now that we assume C89.
diff: tune compare_names_for_qsort
* src/dir.c (compare_collated): New function.
(compare_names): Use it.
(compare_names_for_qsort): Use it. This is a bit more efficient
as it can avoid a double invocation of file_name_cmp when
file_name_cmp returns zero.
2013-03-30 Jim Meyering <meyering@fb.com>
doc: mention new option, --no-dereference in 3.3's NEWS
* NEWS (New feeatures): Update 3.3's news to mention --no-dereference.
Reported by Denis Excoffier.
* Makefile.am (old_NEWS_hash): Update, since this modifies old, and
normally-immutable NEWS.
2013-03-26 Paul Eggert <eggert@cs.ucla.edu>
tests: port to Solaris 10 /bin/sh
* tests/Makefile.am (TESTS_ENVIRONMENT):
Use "FOO=val; export FOO" rather than "export FOO=val",
as the latter form doesn't work with Solaris /bin/sh.
Problem found when trying to run "make check" on Solaris 10.
2013-03-24 Jim Meyering <meyering@fb.com>
maint: post-release administrivia
* NEWS: Add header line for next release.
* .prev-version: Record previous version.
* cfg.mk (old_NEWS_hash): Auto-update.
version 3.3
* NEWS: Record release date.
2013-03-23 Paul Eggert <eggert@cs.ucla.edu>
doc: fix menu typo
* doc/diffutils.texi (Comparing Three Files): Fix out-of-order menu.
Bug caught by Texinfo 5.0.
maint: update build procedure to recent gettext etc.
* bootstrap.conf (gnulib_modules): Add vararrays.
(needed_gnulib_files, unnecessary_gettext_files): New vars.
(bootstrap_post_import_hook): New function, to implement these vars.
(excluded_files): Remove; 'bootstrap' no longer supports this.
Its function is now performed by unnecessary_gettext_files.
(buildreq): Update automake to 1.12.2, to avoid CVE-2012-3386.
* configure.ac (AM_GNU_GETTEXT_VERSION): Bump from 0.17 to 0.18.2,
to lessen the probability that we'll have outlandishly old files
during a build.
* m4/vararrays.m4: Remove from repository, as we now use the
gnulib version.
2013-03-21 Jim Meyering <jim@meyering.net>
build: update gnulib to latest and adapt; update bootstrap, too
Blindly updating to the latest from gnulib, bootstrap would
fail due to failure of our local patches to apply. Hence,
these first two updates.
* gl/lib/regex_internal.c.diff: Update offsets, so this patch
applies to the latest from gnulib.
* gl/lib/regex_internal.h.diff: Remove file. No longer needed.
* bootstrap: Update from gnulib.
2013-01-06 Paul Eggert <eggert@cs.ucla.edu>
tests: port to hosts lacking fmt, make -C
* tests/Makefile.am (built_programs): Don't assume fmt works.
Don't rely on 'make -C', either.
maint: update .gitignore for recent gnulib
* .gitignore: Add tests/*.trs and several *.h and *.sed files in lib,
2013-01-04 Jim Meyering <jim@meyering.net>
build: update gnulib submodule to latest
maint: update all copyright year number ranges
Run "make update-copyright".
2012-10-23 Eric Blake <eblake@redhat.com>
build: default to --enable-gcc-warnings in a git tree
Anyone building from cloned sources can be assumed to have a new
enough environment, such that enabling gcc warnings by default will
be useful. Tarballs still default to no warnings, and the default
can still be overridden with --disable-gcc-warnings.
* configure.ac (gl_gcc_warnings): Set default based on environment.
2012-10-03 Paul Eggert <eggert@cs.ucla.edu>
* doc/diffutils.texi (cmp Options): Document -l format better.
2012-09-10 Jim Meyering <meyering@redhat.com>
maint: use xasprintf in place of xmalloc+sprintf
* bootstrap.conf (gnulib_modules): Add gnulib's xvasprintf module.
* src/util.c: Include "xvasprintf.h".
(begin_output): Use xasprintf in place of xmalloc+sprintf.
2012-09-10 Andreas Gruenbacher <agruen@gnu.org>
diff: encode file names with special characters
* src/util.c (c_escape_char): New function.
(c_escape): New function.
(begin_output): Escape file names when needed.
* src/context.c (print_context_header): New names parameter.
(print_context_label): New name parameter.
* src/diff.h (print_context_header): Change prototype.
* tests/filename-quoting: New file.
* NEWS: Document this change.
2012-08-30 Paul Eggert <eggert@cs.ucla.edu>
diff: silence GCC warning instead of slowing down
* src/dir.c (find_dir_file_pathname): Use 'IF_LINT (volatile)' to
silence the gcc warning, rather than using 'volatile', as the
warning appears to be bogus.
2012-08-28 Jim Meyering <meyering@redhat.com>
diff: avoid possible longjmp-triggered misbehavior
* src/dir.c (find_dir_file_pathname): gcc 4.8.0 20120825 reported
that a local variable's value might be clobbered. Declare "match"
to be volatile.
build: update gnulib, bootstrap and init.sh to latest
maint: avoid new syntax-check failure due to @xref use
* doc/diffutils.texi: Change several "; @xref{..." to ". @xref{...",
since @xref should start a sentence.
2012-05-15 Paul Eggert <eggert@cs.ucla.edu>
maint: remove ms subdirectory
diffutils is now designed to build with Cygwin or MinGW.
The old DJGPP stuff probably doesn't work anyway.
* Makefile.am (SUBDIRS): Remove ms.
* NEWS: Document this.
* configure.ac (AC_CONFIG_FILES): Remove ms/Makefile.
* ms/Makefile.am, ms/README, ms/config.bat, ms/config.sed:
* ms/config.site: Remove.
2012-05-14 Paul Eggert <eggert@cs.ucla.edu>
maint: update bootstrap from gnulib
* bootstrap: Update from gnulib.
main: port subcommands to mingw
Problem reported by Eli Zaretskii in
<http://lists.gnu.org/archive/html/bug-gnu-utils/2012-05/msg00013.html>.
Approach suggested by Bruno Haible as option (4) in
<http://lists.gnu.org/archive/html/bug-gnu-utils/2012-05/msg00036.html>.
* bootstrap.conf (gnulib_modules): Add system-quote.
* src/diff3.c, src/sdiff.c, src/util.c:
Include <system-quote.h>, not <sh-quote.h>.
* src/diff3.c (read_diff):
* src/sdiff.c (main, edit):
* src/util.c (begin_output):
Use system_quote_argv, for portability to Mingw.
* src/sdiff.c (NUM_SIGS, handler_index_of_SIGINT): Now enum
values, not macros; this is cleaner and avoids a GCC warning if
!HAVE_WORKING_VFORK.
* src/util.c (begin_output) [! HAVE_WORKING_FORK]: Do not use -f,
for consistency with the HAVE_WORKING_FORK code.
maint: update bootstrap from gnulib
* bootstrap: Update from gnulib.
maint: m4/gnulib-cache.m4 is not under version control
This is like what coreutils does, and suppresses 'git status' chatter.
* .gitignore: Add /m4/gnulib-cache.m4.
Use binary mode when testing for binary files.
This reverts the 2006-01-05 change and modernizes to the current API.
Idea suggested by Eli Zaretskii in:
http://lists.gnu.org/archive/html/bug-gnu-utils/2012-05/msg00066.html
* src/cmp.c (main):
* src/diff.c (main, compare_files):
Use set_binary_mode rather than SET_BINARY.
* src/diff.c (compare_files): Omit unnecessary use of O_BINARY.
* src/io.c (sip): Sample unknown files in binary mode, to see
whether they are binary.
(read_files): Read binary files in binary mode.
build: update gnulib submodule to latest
2012-05-13 Stefano Lattarini <stefano.lattarini@gmail.com>
build: omit obsolete AM_PROG_CC_STDC macro
The Automake-provided macro 'AM_PROG_CC_STDC' has been superseded by
the Autoconf-provided one 'AC_PROG_CC' since October 2002, and will
be removed in the next major automake version.
* configure.ac (AM_PROG_CC_STDC): Drop it.
2012-05-05 Jim Meyering <meyering@redhat.com>
diff: fix a typo that was always disabling the same_special_file macro
* src/system.h (same_special_file): Correct cpp guard expression:
s/HAVE_ST_RDEV/HAVE_STRUCT_STAT_ST_RDEV/. Reported by Eli Zaretskii.
2012-04-17 Jim Meyering <meyering@redhat.com>
maint: update bootstrap from gnulib
* bootstrap: Update from gnulib.
2012-03-07 Eric Blake <eblake@redhat.com>
usage: improve wording of --ignore-matching-lines
* src/diff.c (option_help_msgid): Tweak wording.
2012-03-04 Paul Eggert <eggert@cs.ucla.edu>
doc: explain -I RE better in --help output
* src/diff.c, src/sdiff.c (option_help_msgid): For -I RE,
change "whose lines all match" to "all whose lines match" to avoid
unintended interpretation. Reported by Danijel Tasov in
<http://bugs.debian.org/648411>.
2012-02-12 Paul Eggert <eggert@cs.ucla.edu>
sdiff: remove dependency on sigprocmask
* bootstrap.conf (gnulib_modules): Remove sigprocmask.
* src/sdiff.c (temporary_file): No need to invoke sigprocmask
here, since the signal handler merely sets a flag.
2012-02-04 Paul Eggert <eggert@cs.ucla.edu>
diff: -N, --unidirectional-new-file now compare to "-" too
* NEWS: Document this.
* doc/diffutils.texi (Comparing Directories): Likewise.
Also, document that these options work at the top level.
* src/diff.c (compare_files): Treat EBADF like ENOENT, to handle
the case where "-" is closed. Allow the other file to be
STDIN_FILENO, in case it's "-".
* tests/Makefile.am (TESTS): Add new-file.
* tests/new-file: New file.
2012-01-25 Paul Eggert <eggert@cs.ucla.edu>
maint: quote 'like this' or "like this", not `like this'
This is in response to a recent change in the GNU coding standards,
which now suggest quoting 'like this' or "like this", instead of
`like this' or ``like this''.
* HACKING, NEWS, README, README-hacking, TODO, doc/diagmeet.note:
* doc/diffutils.texi, ms/config.bat, ms/config.site:
* src/analyze.c, src/cmp.c, src/context.c, src/diff.c:
* src/diff.h, src/diff3.c, src/dir.c, src/ifdef.c, src/io.c:
* src/sdiff.c, src/side.c, src/system.h, src/util.c:
* tests/help-version:
Quote 'like this' or "like this" in commentary.
* cfg.mk (old_NEWS_hash): Adjust to reflect new NEWS quoting.
* man/help2man: Update to 1.40.4 version, with quoting fixed as above.
* po/en.po: Remove translation involving `, as it's no longer needed.
* src/cmp.c (try_help, specify_ignore_initial, usage, main):
* src/diff.c (main, try_help, option_help_msgid, specify_value)
(compare_files):
* src/diff3.c (main, try_help, option_help_msgid, usage)
(read_diff):
* src/dir.c (compare_names):
* src/sdiff.c (try_help, usage, check_child_status, main):
* src/util.c (finish_output):
* tests/help-version:
Quote 'like this' in output.
build: update gnulib submodule to latest
2012-01-12 Jim Meyering <meyering@redhat.com>
build: accommodate newer bootstrap from gnulib
* bootstrap.conf (gnulib_tool_option_extras): Add both --symlink
and --makefile-name=gnulib.mk. Also remove now-obsolete $bt/ prefix.
* bootstrap: Update from gnulib.
* tests/init.sh: Update from gnulib.
* lib/Makefile.am: Initialize numerous variables, so that
generated code in gnulib.mk may use += to append to them.
maint: avoid new syntax-check failure
* src/diff.c (compare_files): Use STREQ, not strcmp.
2012-01-08 Bruno Haible <bruno@clisp.org>
New option --no-dereference.
* src/diff.h (no_dereference_symlinks): New variable.
* src/diff.c: Include xreadlink.h.
(longopts): Add --no-dereference option.
(main): Accept --no-dereference option.
(option_help_msgid): Mention the --no-dereference option.
(compare_files): If no_dereference_symlinks is true, use lstat()
instead of stat(). Compare symbolic links by comparing their values.
* bootstrap.conf (gnulib_modules): Add lstat, stat, xreadlink.
* doc/diffutils.texi (Comparing Directories, diff Options): Mention the
--no-dereference option.
* tests/no-dereference: New file.
* tests/Makefile.am (TESTS): Add it.
2012-01-01 Jim Meyering <meyering@redhat.com>
maint: update all copyright year number ranges
Run "make update-copyright".
2011-12-14 Jim Meyering <meyering@redhat.com>
build: update to latest gnulib and adapt
* tests/binary: Reverse arguments to compare to avoid failure of
new syntax-check rule.
* configure.ac: Use -Wno-format-nonliteral.
Mark functions as pure of const, per recommendations enabled by
new gcc -W options. Use _GL_ATTRIBUTE_PURE and _GL_ATTRIBUTE_CONST.
* lib/cmpbuf.h (buffer_lcm, block_compare):
Apply pure and/or const attributes.
* src/cmp.c (block_compare): Likewise.
* src/context.c (find_hunk): Likewise.
* src/diff.h (lines_differ): Likewise.
* src/diff3.c (skipwhite): Likewise.
* src/dir.c (dir_loop): Likewise.
* src/util.c (find_change, find_reverse_change): Likewise.
(translate_line_number): Likewise.
build: stop distributing gzip'd releases; xz is enough
* configure.ac (AM_INIT_AUTOMAKE): Add no-dist-gzip.
2011-11-29 Jim Meyering <meyering@redhat.com>
tests: use "compare exp out", not "compare out exp"
Likewise, when an empty file is expected, use "compare /dev/null out",
not "compare out /dev/null". I.e., specify the expected/desired contents
via the first file name. Prompted by a suggestion from Bruno Haible
in http://thread.gmane.org/gmane.comp.gnu.grep.bugs/4020/focus=29154
Run these commands:
git grep -l -E 'compare [^ ]+ exp' \
|xargs perl -pi -e 's/\b(compare) (\S+) (exp\S*)/$1 $3 $2/'
git grep -l -E 'compare [^ ]+ /dev/null' \
|xargs perl -pi -e 's,\b(compare) (\S+) (/dev/null),$1 $3 $2,'
But manually convert this one:
-compare out exp-$(echo $opt|tr ' ' _)
+compare exp-$(echo $opt|tr ' ' _) out
and avoid an inappropriate change to cfg.mk.
2011-10-12 Stefano Lattarini <stefano.lattarini@gmail.com>
tests: use more portable fd redirection in TESTS_ENVIRONMENT
* tests/Makefile.am (TESTS_ENVIRONMENT): Redirection with `exec 9>&2'
is not portable to various Korn shells, and to (at least) HP-UX 11
/bin/sh. Use a more portable idiom.
See http://thread.gmane.org/gmane.comp.gnu.coreutils.bugs/22488 for
lots of discussion.
2011-10-11 Stefano Lattarini <stefano.lattarini@gmail.com>
tests: make test runner a script, not a shell function
All the test scripts in the diffutils testsuite are shell scripts,
so the current definition of TESTS_ENVIRONMENT, which adaptively
run tests using either perl or the shell depending on their kind,
is an overkill.
Moreover, this change is required in order for the testsuite to
continue to work with the new testsuite harness that is planned
to be introduced in Automake 1.12 (which, as of the writing date,
is still under development and in late alpha state).
See also related discussion on bug-coreutils:
<http://debbugs.gnu.org/cgi/bugreport.cgi?bug=8887>
* tests/Makefile.am (TESTS_ENVIRONMENT): Remove definition of the
`shell_or_perl_' shell function, which is not required anymore.
(LOG_COMPILER): New, define to `$(SHELL)'.
* tests/binary: Make executable.
* tests/colliding-file-names: Likewise.
* tests/excess-slash: Likewise.
* tests/no-newline-at-eof: Likewise.
2011-10-04 Claudio Bley <claudio.bley@gmail.com>
portability: use SET_BINARY rather than xfreopen (NULL, ...
* src/diff.c: Include binary-io.h, not xfreopen.h.
(main): Use SET_BINARY (...) rather than xfreopen (NULL, X, ...),
because the latter doesn't work on MinGW and crashes using MSVC.
* src/cmp.c (main): Likewise.
2011-10-04 Jim Meyering <meyering@redhat.com>
build: update gnulib submodule to latest
2011-09-02 Jim Meyering <meyering@redhat.com>
post-release administrivia
* NEWS: Add header line for next release.
* .prev-version: Record previous version.
* cfg.mk (old_NEWS_hash): Auto-update.
version 3.2
* NEWS: Record release date.
build: update bootstrap and tests/init.sh from gnulib
* bootstrap: Update from gnulib.
* tests/init.sh: Likewise.
build: update gnulib submodule to latest
2011-09-01 Jim Meyering <meyering@redhat.com>
doc: diffutils' texi-derived doc may now be in debian's "main" section
* NEWS (Packaging): Mention the "no front/back-cover" change.
2011-08-14 Jim Meyering <meyering@redhat.com>
maint: avoid new "make sytnax-check" failure.
* src/diff.h (find_dir_file_pathname): Mark declaration with "extern"
keyword, in order to placate the tight-scope syntax check.
2011-08-14 Paul Eggert <eggert@cs.ucla.edu>
* src/io.c (find_and_hash_each_line): Refactor for brevity.
2011-08-14 Roland McGrath <roland@hack.frob.com>
diff, sdiff: new option --ignore-trailing-space (-Z)
Derived from Roland McGrath's patch (dated June 2004!) in:
http://lists.gnu.org/archive/html/bug-gnu-utils/2004-07/msg00000.html
* NEWS:
* doc/diffutils.texi (White Space, Blank Lines)
(sdiff Option Summary, diff Options, sdiff Options): Document -Z.
* src/diff.h (IGNORE_TRAILING_SPACE)
(IGNORE_TAB_EXPANSION_AND_TRAILING_SPACE): New constants, for -Z.
* src/diff.c (shortopts, longopts, main, option_help_msgid):
* src/sdiff.c (longopts, option_help_msgid, main):
* src/io.c (find_and_hash_each_line):
* src/util.c (lines_differ, analyze_hunk): Support -Z.
2011-08-13 Paul Eggert <eggert@cs.ucla.edu>
* bootstrap.conf (gnulib_modules): Remove timegm.
This fixes a problem noted by Andreas Schwab in:
http://lists.gnu.org/archive/html/bug-diffutils/2011-08/msg00035.html
2011-08-13 Tim Waugh <twaugh@redhat.com>
diff: --ignore-file-name-case now applies at top level too
Derived from Tim Waugh's patch in:
http://lists.gnu.org/archive/html/bug-diffutils/2011-08/msg00034.html
* NEWS, doc/diffutils.texi (diff Options): Document this.
* src/diff.c (compare_files): Implement this, by using
find_dir_file_pathname.
* src/diff.h (find_dir_file_pathname): New decl.
* src/dir.c: Include filenamecat.h.
(find_dir_file_pathname): New function.
2011-08-13 Paul Eggert <eggert@cs.ucla.edu>
* .gitignore: Add lib/unistr, lib/unused-parameter.h.
2011-08-10 Jim Meyering <meyering@redhat.com>
post-release administrivia
* NEWS: Add header line for next release.
* .prev-version: Record previous version.
* cfg.mk (old_NEWS_hash): Auto-update.
version 3.1
* NEWS: Record release date.
build: use largefile module and update to latest gnulib
* configure.ac: Remove AC_SYS_LARGEFILE, subsumed by ...
* bootstrap.conf (gnulib_modules): ...this. Use largefile module.
* gnulib: Update to latest.
2011-08-08 Santiago Vila <sanvila@unex.es>
doc: insert comma in --help line for --ignore-space-change (-b)
* src/diff.c (option_help_msgid): Insert omitted comma between
"-b" and "--ignore-space-change". (tiny change)
2011-08-04 Jim Meyering <meyering@redhat.com>
doc: relax restriction on front-cover and back-cover texts
* doc/diffutils.texi (copying): Relax restriction on front-cover
and back-cover texts (just as m4 did here:
http://git.savannah.gnu.org/cgit/m4.git/commit?id=ee1e92ec).
Reported by Santiago Vila. Fix suggested by Eric Blake.
2011-08-03 Jim Meyering <meyering@redhat.com>