Editing Patch (Unix) (section)

==History==
The original patch program was written by [[Larry Wall]] (who went on to create the [[Perl]] [[programming language]]) and posted to <code>mod.sources</code><ref>{{cite newsgroup
 |url=https://groups.google.com/g/mod.sources/c/xSQM63e39YY/m/apNNJSkJi0gJ
 |newsgroup=mod.sources
 |title=patch version 1.3
 |first=Larry
 |last=Wall
 |author-link=Larry_Wall
 |date=May 8, 1985
 |access-date=2024-07-14
 |url-status=live
 |archive-url=https://web.archive.org/web/20230404223018/https://groups.google.com/g/mod.sources/c/xSQM63e39YY/m/apNNJSkJi0gJ
 |archive-date=2023-04-04
}}</ref> (which later became <code>comp.sources.unix</code>) in May 1985.

patch was added to XPG4, which later became [[POSIX]].<ref>{{man|cu|patch|SUS}}</ref> Wall's code remains the basis of "patch" programs provided in [[OpenBSD]],<ref>http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/patch/ {{Webarchive|url=https://web.archive.org/web/20170607120135/http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.bin/patch/ |date=2017-06-07 }} OpenBSD patch source</ref> [[FreeBSD]],<ref>{{man|1|FreeBSD}}</ref> and schilytools.<ref>{{cite web | url=https://codeberg.org/schilytools/schilytools/src/branch/master/patch/patch.c | title=Schilytools }}</ref>{{dubious|wall-vs-gnu|date=August 2024}} The [[Open Software Foundation]], which merged into [[The Open Group]], is said to have maintained a derived version.{{dubious|wall-vs-gnu|date=August 2024}}

The [[GNU project]]/[[Free Software Foundation|FSF]] maintains its patch, forked from the Larry Wall version. The repository is different from that of GNU diffutils, but the documentation is managed together.<ref>{{cite web | url=https://git.savannah.gnu.org/cgit/patch.git/tree/src/patch.c | title=Patch.c\SRC - patch.git - GNU patch }}</ref>