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GNU diffutils NEWS -*- outline -*- * Noteworthy changes in release 3.3 (2013-03-24) [stable] ** New features --new-file (-N) and --unidirectional-new-file now allow comparisons to "-". A standard input that's closed acts like a nonexistent file. A file name containing spaces, double quotes, backslashes or control characters is now encoded in a diff header as a double-quoted C string literal. The escape sequences \\, \", \a, \b, \f, \n, \r, \t, \v and \ooo (a three-digit octal number between 0 and 255) are used. ** Packaging diffutils is now designed to build with Cygwin or MinGW rather than DJGPP. The ms subdirectory has been removed. * Noteworthy changes in release 3.2 (2011-09-02) [stable] ** Changes in behavior --ignore-file-name-case now applies at the top level too. For example, "diff dir inIt" might compare "dir/Init" to "inIt". ** New features diff and sdiff have a new option --ignore-trailing-space (-Z). ** Packaging The texinfo documentation no longer specifies "front-cover" or "back-cover" texts, so that it may now be included in Debian's "main" section. * Noteworthy changes in release 3.1 (2011-08-10) [stable] ** Bug fixes diff no longer reports spurious differences merely because two entries in the same directory have names that compare equal in the current locale, or compare equal because --ignore-file-name-case was given. * Noteworthy changes in release 3.0 (2010-05-03) [stable] ** Bug fixes diff once again prints the required "\ No newline at end of file" line when at least one input lacks a newline-at-EOF and the final hunk plus context-length aligns exactly with the end of the newline-lacking file. [bug introduced between 2.8.7 and 2.9] ** Changes in behavior In context-style diffs, diff prints a portion of a preceding "function" line for each hunk, with --show-function-line=RE (-F) or --show-c-function (-p). Now, it trims leading blanks from such lines before extracting a prefix. This is useful especially when a function line is so far indented that the name itself would be truncated or not included in the limited-width substring that diff appends. diff once again reports a difference with the diagnostic "Binary files A and B differ" when at least one of the files appears to be binary. From 2.8.4 through diffutils-2.9, it printed "Files A and B differ". * Noteworthy changes in release 2.9 (2010-02-11) [stable] ** New features New diff option --suppress-blank-empty. Bring back support for 'diff -NUM', where NUM is a number, even when conforming to POSIX 1003.1-2001. This change reverts to the behavior of GNU diff 2.7 and earlier. This is a change only when conforming to POSIX 1003.1-2001; there is no effect when conforming to older POSIX versions. This change is in response to decisions taken in the January 2005 Austin Group standardization meeting. For more details, please see "Utility Syntax Guidelines" in the Minutes of the January 2005 Meeting <http://www.opengroup.org/austin/docs/austin_239.html>. sdiff now understands '1' and '2' as synonyms for 'l' and 'r'. ** Changes in behavior sdiff and diff3 now invoke diff, not $(bindir)/diff ** Administrivia New discussion and bug-reporting address: bug-diffutils@gnu.org updated gnulib support * Noteworthy changes in release 2.8.7 (2004-04-13) [stable] Version 2.8.7 contains no user-visible changes. User-visible changes in version 2.8.6: * New diff3 option --strip-trailing-cr. * With -N and -P, inaccessible empty regular files (the kind of files that 'patch' creates to indicate nonexistent backups) are now treated as nonexistent when they are in the 'backup' file position. * If multiple SKIP values are given to cmp, e.g., 'cmp -i 10 -i 20', cmp now uses the maximal value instead of the last one. * diff now omits the ".000000000" on hosts that do not support fractional time stamps. Version 2.8.5 was not publicly released. User-visible changes in version 2.8.4: * Diff now simply prints "Files A and B differ" instead of "Binary files A and B differ". The message is output if either A or B appears to be a binary file, and the old wording was misleading because it implied that both files are binary, which is not necessarily the case. User-visible changes in version 2.8.3: * New locale: en_US. User-visible changes in version 2.8.2: * New diff and sdiff option: --tabsize=COLUMNS * If --ignore-space-change or --ignore-all-space is also specified, --ignore-blank-lines now considers lines to be empty if they contain only white space. * More platforms now handle multibyte characters correctly when excluding files by name (diff -x and -X). * New locales: hu, pt_BR. User-visible changes in version 2.8.1: * Documentation fixes. User-visible changes in version 2.8: * cmp and diff now conform to POSIX 1003.1-2001 (IEEE Std 1003.1-2001) if the underlying system conforms to POSIX and if the _POSIX2_VERSION environment variable is set to 200112. Conformance removes support for 'diff -NUM', where NUM is a number. Use -C NUM or -U NUM instead. * cmp now supports trailing operands SKIP1 and SKIP2, like BSD cmp. * cmp -i or --ignore-initial now accepts SKIP1:SKIP2 option value. * New cmp option: -n or --bytes. * cmp's old -c or --print-chars option has been renamed; use -b or --print-bytes instead. * cmp now outputs "byte" rather than "char" outside the POSIX locale. * cmp -l's index column width now adjusts to fit larger (or smaller) files. * cmp -l -s and cmp -s -l are not allowed. Use cmp -s or cmp -l instead. * diff uses ISO 8601 style time stamps for output times (e.g. "2001-11-23 16:44:36.875702460 -0800") unless in the C or POSIX locale and the -c style is specified. * diff's -I and -F options use the regexp syntax of grep, not of Emacs. * diff now accepts multiple context arguments, and uses their maximum value. * New diff and sdiff options: -E --ignore-tab-expansion --strip-trailing-cr * New diff options: --from-file=FILE, --to-file=FILE --ignore-file-name-case --no-ignore-file-name-case * New diff3 and sdiff option: --diff-program=PROGRAM * The following diff options are still accepted, but are no longer documented. They may be withdrawn in future releases. -h (omit; it has no effect) -H (use --speed-large-files instead) -L (use --label instead) -P (use --unidirectional-new-file instead) --inhibit-hunk-merge (omit; it has no effect) * Recursive diffs now sort file names according to the LC_COLLATE locale category if possible, instead of using native byte comparison. * Recursive diffs now detect and report directory loops. * Diff printf specs can now use the "0" and "'" flags. * The new sdiff interactive command 'ed' precedes each version with a header. * On 64-bit hosts, files larger than 2 GB can be compared. * Some internationalization support has been added, but multibyte locales are still not completely supported yet. * Some diagnostics have been reworded slightly for consistency. Also, 'diff -D FOO' now outputs '/* ! FOO */' instead of '/* not FOO */'. * The 'patch' part of the manual now describes 'patch' version 2.5.4. * Man pages are now distributed and installed. * There is support for DJGPP; see the 'ms' subdirectory and the files m4/dos.m4 and */setmode.*. User-visible changes in version 2.7: * New diff option: --binary (useful only on non-POSIX hosts) * diff -b and -w now ignore line incompleteness; -B no longer does this. * cmp -c now uses locale to decide which output characters to quote. * Help and version messages are reorganized. User-visible changes in version 2.6: * New cmp, diff, diff3, sdiff option: --help * A new heuristic for diff greatly reduces the time needed to compare large input files that contain many differences. * Partly as a result, GNU diff's output is not exactly the same as before. Usually it is a bit smaller, but sometimes it is a bit larger. User-visible changes in version 2.5: * New cmp option: -v --version User-visible changes in version 2.4: * New cmp option: --ignore-initial=BYTES * New diff3 option: -T --initial-tab * New diff option: --line-format=FORMAT * New diff group format specifications: <PRINTF_SPEC>[eflmnEFLMN] A printf spec followed by one of the following letters causes the integer corresponding to that letter to be printed according to the printf specification. E.g. '%5df' prints the number of the first line in the group in the old file using the "%5d" format. e: line number just before the group in old file; equals f - 1 f: first line number in group in the old file l: last line number in group in the old file m: line number just after the group in old file; equals l + 1 n: number of lines in group in the old file; equals l - f + 1 E, F, L, M, N: likewise, for lines in the new file %(A=B?T:E) If A equals B then T else E. A and B are each either a decimal constant or a single letter interpreted as above. T and E are arbitrary format strings. This format spec is equivalent to T if A's value equals B's; otherwise it is equivalent to E. For example, '%(N=0?no:%dN) line%(N=1?:s)' is equivalent to 'no lines' if N (the number of lines in the group in the new file) is 0, to '1 line' if N is 1, and to '%dN lines' otherwise. %c'C' where C is a single character, stands for the character C. C may not be a backslash or an apostrophe. E.g. %c':' stands for a colon. %c'\O' where O is a string of 1, 2, or 3 octal digits, stands for the character with octal code O. E.g. %c'\0' stands for a null character. * New diff line format specifications: <PRINTF_SPEC>n The line number, printed with <PRINTF_SPEC>. E.g. '%5dn' prints the line number with a "%5d" format. %c'C' %c'\O' The character C, or with octal code O, as above. * Supported <PRINTF_SPEC>s have the same meaning as with printf, but must match the extended regular expression %-*[0-9]*(\.[0-9]*)?[doxX]. * The format spec %0 introduced in version 2.1 has been removed, since it is incompatible with printf specs like %02d. To represent a null char, use %c'\0' instead. * cmp and diff now conform to POSIX 1003.2-1992 (ISO/IEC 9945-2:1993) if the underlying system conforms to POSIX: - Some messages' wordings are changed in minor ways. - "White space" is now whatever C's 'isspace' says it is. - When comparing directories, if 'diff' finds a file that is not a regular file or a directory, it reports the file's type instead of diffing it. (As usual, it follows symbolic links first.) - When signaled, sdiff exits with the signal's status, not with status 2. * Now portable to hosts where int, long, pointer, etc. are not all the same size. * 'cmp - -' now works like 'diff - -'. User-visible changes in version 2.3: * New diff option: --horizon-lines=lines User-visible changes in version 2.1: * New diff options: --{old,new,unchanged}-line-format='format' --{old,new,unchanged,changed}-group-format='format' -U * New diff3 option: -A --show-all * diff3 -m now defaults to -A, not -E. * diff3 now takes up to three -L or --label options, not just two. If just two options are given, they refer to the first two input files, not the first and third input files. * sdiff and diff -y handle incomplete lines. User-visible changes in version 2.0: * Add sdiff and cmp programs. * Add Texinfo documentation. * Add configure script. * Improve diff performance. * New diff options: -x --exclude -X --exclude-from -P --unidirectional-new-file -W --width -y --side-by-side --left-column --sdiff-merge-assist --suppress-common-lines * diff options renamed: --label renamed from --file-label --forward-ed renamed from --reversed-ed --paginate renamed from --print --entire-new-file renamed from --entire-new-files --new-file renamed from --new-files --all-text removed * New diff3 options: -v --version * Add long-named equivalents for other diff3 options. * diff options -F (--show-function-line) and -I (--ignore-matching-lines) can now be given more than once. Copyright (C) 1993-1994, 1998, 2001-2002, 2004, 2006, 2009-2013 Free Software Foundation, Inc. This file is part of GNU Diffutils. 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/>.
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