Re: What's cooking in git.git (May 2012, #06; Wed, 23)

> Am 5/24/2012 7:36, schrieb René Scharfe:
>> Am 24.05.2012 00:24, schrieb Junio C Hamano:
>>> * rs/maint-grep-F (2012-05-21) 4 commits
>>>    (merged to 'next' on 2012-05-23 at b24143c)
>>>   + grep: stop leaking line strings with -f
>>>   + grep: support newline separated pattern list
>>>   + grep: factor out do_append_grep_pat()
>>>   + grep: factor out create_grep_pat()
>>>
>>> "git grep -F", unlike the case where it reads from a file, did not treat
>>> individual lines in the given pattern argument as separate patterns as it
>>> should.
>> 
>> This is not specific to -F; grep(1) accepts newline-separated pattern
>> lists with -E etc. as well, as does git grep with the patches above.
>
> Shouldn't we worry that this change breaks existing users?
>
> Consider a script that generates a pattern that sometimes contains NL.
> Yes, it would not match anywhere, but what if that is a deliberate choice
> of the script writer? With this change, the script would now observe
> spurious matches where earlier there were no matches.