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* diff: Fix usage message and documentation.Dag-Erling Smørgrav2024-08-011-3/+3
| | | | | | | | | | | | | 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 patternWarner Losh2023-08-231-1/+0
| | | | | | | Remove /^\.\\"\s*\$FreeBSD\$$\n/ Similar commit in main: (cherry picked from commit b2c76c41be32)
* diff(1): Add EXAMPLES sectionFernando Apesteguía2020-06-191-3/+45
| | | | | | | | | | Add examples for -r, -u, -N, -x, -q and -I Approved by: 0mp@ Differential Revision: https://reviews.freebsd.org/D25345 Notes: svn path=/head/; revision=362367
* Document long version of -b optionBaptiste Daroussin2020-06-011-2/+2
| | | | | | | | | | PR: 234195 Submitted by: Fehmi Noyan Isi <fnoyanisi@yahoo.com> Reported by: Andras Farkas <deepbluemistake@gmail.com> MFC after: 3 days Notes: svn path=/head/; revision=361690
* diff: fix segfault with --tabsize and no/malformed argumentKyle Evans2020-02-131-7/+7
| | | | | | | | | | | | | | | | | | | | | | | | --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 <fnoyanisi yahoo com> (diff.c portion) MFC after: 3 days Notes: svn path=/head/; revision=357875
* diff.1: Fix style & document -y as extension to POSIXMateusz Piotrowski2020-02-121-13/+13
| | | | | | | | | | | - 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 Notes: svn path=/head/; revision=357841
* Fix most of the style warningsBaptiste Daroussin2020-02-071-12/+11
| | | | Notes: svn path=/head/; revision=357652
* diff: implement -y (--side-by-side) along with -W and --suppress-common-linesBaptiste Daroussin2020-02-071-3/+38
| | | | | | | | | PR: 219933 Submitted by: fehmi noyan isi <fnoyanisi@yahoo.com> MFC after: 3 weeks Notes: svn path=/head/; revision=357648
* diff(1): Implement -B/--ignore-blank-linesKyle Evans2018-08-191-6/+8
| | | | | | | | | | | | | | | | 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 Notes: svn path=/head/; revision=338039
* Cross reference pr(1) which diff might call with -l optionBaptiste Daroussin2017-04-201-0/+1
| | | | Notes: svn path=/head/; revision=317207
* Document all long optionsBaptiste Daroussin2017-04-201-25/+37
| | | | Notes: svn path=/head/; revision=317205
* Implement a basic --changed-group-formatBaptiste Daroussin2017-04-201-1/+16
| | | | | | | | | | | | | etcupdate(8) requires that option, while GNU diff supports many more variation of that options, their behaviour beside the simple verion implemented here are quite inconsistent as such I do not plan to implement those. The only special keyword supported by this implementation are: %< and %> %= is not implemented as the documentation of GNU diff says: common lines, but it actually when tested print the changes from the first file Notes: svn path=/head/; revision=317194
* add a stub --speed-large-files for compatibility with GNU diffBaptiste Daroussin2017-04-081-1/+6
| | | | | | | | There is no intention to implement it, but lots of scripts/tools using diff(1) passes GNU diff option Notes: svn path=/head/; revision=316639
* diff(1): document remaining long optionsEnji Cooper2017-03-231-15/+85
| | | | | | | | | | While here, try and tie together some of the short options with their long option equivalents, where possible. Sponsored by: Dell EMC Isilon Notes: svn path=/head/; revision=315779
* diff(1): fix SYNOPSIS section noting non-existent option, --no-ignore-caseEnji Cooper2017-03-221-6/+6
| | | | | | | | | | `--no-ignore-case` should be `--no-ignore-file-name-case` per code for compatibility with [g]diff(1). Sponsored by: Dell EMC Isilon Notes: svn path=/head/; revision=315726
* diff(1): add --strip-trailing-cr to last example in the SYNOPSISEnji Cooper2017-03-191-1/+2
| | | | | | | | | | | This syncs the last example in the SYNOPSIS with the other examples. Reviewed by: bapt Sponsored by: Dell EMC Isilon Differential Revision: D10017 Notes: svn path=/head/; revision=315590
* diff(1): sort long options under -D example in SYNOPSYSEnji Cooper2017-03-151-2/+2
| | | | | | | Sponsored by: Dell EMC Isilon Notes: svn path=/head/; revision=315319
* Fix wrong date in diff(1)Baptiste Daroussin2017-03-121-1/+1
| | | | | | | Reported by: rgrimes Notes: svn path=/head/; revision=315101
* Import diff from OpenBSD and remove GNU diffBaptiste Daroussin2017-03-111-0/+506
Some of the modifications from the previous summer of code has been integrated Modification for compatibility with GNU diff output has been added Main difference with OpenBSD: Implement multiple GNU diff options: * --ignore-file-name-case * --no-ignore-file-name-case * --normal * --tabsize * --strip-trailing-cr Make diff -p compatible with GNU diff Implement diff -l Make diff -r compatible with GNU diff Capsicumize diffing 2 regular files Add a simple test suite Approved by: AsiaBSDcon devsummit Obtained from: OpenBSD, GSoC Relnotes: yes Notes: svn path=/head/; revision=315051
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