Kyle Evans f823c6dc73 grep: fix null pattern and empty pattern file behavior ... The null pattern semantics were terrible because I tried to match gnugrep, but I got it wrong. Let's unwind that: - The null pattern should match every line if neither -w nor -x. - The null pattern should match empty lines if -x. - The null pattern should not match any lines if -w. The first two will stop processing (shortcut) even if additional patterns are specified. In any other case, we will continue processing other patterns. If no other patterns are specified beside a null pattern, then we match if neither -w nor -x or set and do not match if either of those are specified. The justification for -w is that it should match on a whole word, but the null pattern deos not have a whole word to match on. Empty pattern files should never match anything, and more importantly, -v should cause everything to be written. PR: 253209 MFC-after: 4 days		2021-02-04 20:59:42 -06:00
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tests	grep: tests: stop testing for a nonexistent version of grep	2020-12-25 15:16:33 -06:00
file.c	Fix -Wpointer-sign warnings in usr.bin/grep	2020-09-21 09:03:37 +00:00
grep.1	grep(1): Add more EXAMPLES	2020-11-19 18:58:15 +00:00
grep.c	grep: fix null pattern and empty pattern file behavior	2021-02-04 20:59:42 -06:00
grep.h	grep: replace the internal queue with a ring buffer	2020-12-09 05:27:45 +00:00
Makefile	grep: fix LINKS in Makefile	2021-01-18 11:22:48 +01:00
Makefile.depend	Update Makefile.depend files	2019-12-11 17:37:53 +00:00
Makefile.depend.options
queue.c	grep: replace the internal queue with a ring buffer	2020-12-09 05:27:45 +00:00
util.c	grep: fix null pattern and empty pattern file behavior	2021-02-04 20:59:42 -06:00
zgrep.1	Fix some regressions with the zgrep(1) wrapper.	2020-07-20 23:57:53 +00:00
zgrep.sh	bzgrep: make flag --no-filename work	2020-11-20 09:56:46 +00:00