src/usr.bin/diff/diff.1, branch releng/13.5

diff: Fix usage message and documentation.

2024-08-01T16:43:02Z

The `--ignore-all-space` option was incorrectly documented as `--ignore-all-blanks` in some (but not all) places. MFC after: 3 days PR: 280434 Sponsored by: Klara, Inc. Reviewed by: 0mp, markj Differential Revision: https://reviews.freebsd.org/D46160 (cherry picked from commit ab830de9f58c1b257e42b4fbdd46b3ca6a837ee6)

Remove $FreeBSD$: one-line nroff pattern

2023-08-23T17:43:32Z

Remove /^\.\\"\s*\$FreeBSD\$$\n/ Similar commit in main: (cherry picked from commit b2c76c41be32)

diff(1): Add EXAMPLES section

2020-06-19T06:48:16Z

Add examples for -r, -u, -N, -x, -q and -I Approved by: 0mp@ Differential Revision: https://reviews.freebsd.org/D25345

Document long version of -b option

2020-06-01T09:15:15Z

PR: 234195 Submitted by: Fehmi Noyan Isi Reported by: Andras Farkas MFC after: 3 days

diff: fix segfault with --tabsize and no/malformed argument

2020-02-13T20:23:55Z

--tabsize was previously listed as optional_argument, but didn't account for the optionality of it in the argument handling. This is irrelevant -- the manpage doesn't indicate that the argument is optional, and indeed there's no clear interpretation of omitting the argument because there's no other side effect of --tabsize. The "malformed" argument part of the header on this message is simply referring to usage like this: % diff --tabsize 4 A B With an optional_argument, the argument must be attached to the parameter directly (e.g. --tabsize=4), so the argument is effectively NULL with the above invocation as if no argument had been passed. PR: 243974 Submitted by: fehmi noyan isi (diff.c portion) MFC after: 3 days

diff.1: Fix style & document -y as extension to POSIX

2020-02-12T20:06:41Z

- Long options must be stylized with the Fl macro as well. Reviewed by: bapt Approved by: bcr (mentor) Differential Revision: https://reviews.freebsd.org/D23642

Fix most of the style warnings

2020-02-07T12:26:38Z

diff: implement -y (--side-by-side) along with -W and --suppress-common-lines

2020-02-07T10:17:13Z

PR: 219933 Submitted by: fehmi noyan isi MFC after: 3 weeks

diff(1): Implement -B/--ignore-blank-lines

2018-08-19T03:57:20Z

As noted by cem in r338035, coccinelle invokes diff(1) with the -B flag. This was not previously implemented here, so one was forced to create a link for GNU diff to /usr/local/bin/diff Implement the -B flag and add some primitive tests for it. It is implemented in the same fashion that -I is implemented; each chunk's lines are scanned, and if a non-blank line is encountered then the chunk will be output. Otherwise, it's skipped. MFC after: 2 weeks

Cross reference pr(1) which diff might call with -l option

2017-04-20T19:14:52Z