home *** CD-ROM | disk | FTP | other *** search
- 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- They may be withdrawn in future releases.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.
- * 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 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 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 2, or (at your option)
- any later version.
-
- This program is distributed in the hope that they will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; see the file COPYING. If not, write to
- the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA.
-