John Prokos created ticket #3

-f flag not working as discribed

Wataru Ashihara modified a comment on ticket #2

Your grep seems to use ENHANCED FEATURES descibed in re_format(7), whereas proctools use extended regular expressions defined in POSIX. Using ENHANCED FEATURES is easy (simply replace REG_EXTENDED with REG_ENHANCED in regcomp()) but may have a portability issue.

Wataru Ashihara posted a comment on ticket #1

I uploaded fixed code to github. wfaulk, j-devenish, Could you apply my patch? This bug still causes problems in 2018. Of course, I'll transfer the ownership of the repository on github to you if you want.

Wataru Ashihara posted a comment on ticket #2

Your grep seems to use ENHANCED FEATURES descibed in re_format(7), whereas proctools use extended regular expressions defined in POSIX. Using ENHANCED FEATURES is easy (simply replace REG_EXTENDED with REG_ENHANCED in regcomp()) but may lost portability.

Wataru Ashihara posted a comment on discussion Help

I can't access the patch from vanjalolz, however, patchs from Homebrew should work, at least on High Sierra. I uploaded patched sources to github.

proctools released /OldFiles/pgrep.c

proctools released /OldFiles/pre-proctools-0.1.tar.gz

Jan Hendrik Mangold posted a comment on ticket #1

It's 2014 and I just discovered the same behaviour. I am on Apple Mavericks and have...