[Bug 95936] egrep(1) misparses multiline parenthetical grouping

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=95936

Kyle Evans <bsdports at kyle-evans.net> changed:

           What    |Removed                     |Added
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                 CC|                            |bsdports at kyle-evans.net

--- Comment #1 from Kyle Evans <bsdports at kyle-evans.net> ---
Hi (delayed response),

This is actually intended behavior. It's not so much that it doesn't correctly
see it, it's that newlines are pattern delimiters, so this is actually broken
into two different patterns: '(', and 'hi)'. To verify, check:

$ printf "hi\nthere" | egrep -o "hi
er"
hi
er
# Correct

This is probably dual purpose:

1. Maintains consistency with file-read patterns (-f)
2. grep is inherently line-oriented, thus making it nonsensical to actually
match on newlines.

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