https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=251775
Yuri Pankov <yur...@freebsd.org> changed:
What |Removed |Added
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CC| |yur...@freebsd.org
--- Comment #1 from Yuri Pankov <yur...@freebsd.org> ---
It's not grep itself, it's our regex implementation.
POSIX says it's UB:
*+?{
The asterisk, plus-sign, question-mark, and left-brace shall be special
except when used in a bracket expression. Any of the following uses produce
undefined results:
- If a left-brace is not part of a valid interval expression
re_format(7) is free interpretation of the standard.
FWIW, the best way is to fix your regular expressions.
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