Re: [PATCH] Add two grep config options

[Junio C Hamano <gitster@pobox.com>]

Joe Ratterman <jratt0@gmail.com> writes:

> grep.extended-regexp: Enabling this boolean option has the same effect
> as adding "-E" to all "git grep " instantiations.  This can be
> disabled by specifying "--no-extended-regexp" on a particular call.
>
> grep.line-numbers: Enabling this boolean option has the same effect as
> adding "-n" to all "git grep " instantiations.
>
> Signed-off-by: Joe Ratterman <jratt0@gmail.com>

Thanks.

Things to consider:

 - Apply this patch on top of "master",run "git shortlog v1.7.4..HEAD",
   store the output somewhere, and imagine reading that 2 months from now.
   Does a single line in the output about this patch sufficiently tell you
   what it was about?

 - Configuration variables are spelled without hyphens between words (you
   can see "gui.commitmsgwidth" in the context of the patch you sent and
   notice that it is not "gui.commit-msg-width").

 - This will break scripts people have written, knowing that they can rely
   on "grep" they wrote without giving "-E" from their command line will
   use BRE, and force them to update the script with --no-extended-regexp
   for no good reason.  Worse yet, there isn't even --no-line-numbers
   supported to defeat grep.linenumbers configuration to protect such
   scripts.

   I understand that some people would feel that the convenience would
   outweigh the risk of script breakage in this particular case, and I am
   sympathetic to the cause, but I still have to point it out.  Is there
   anything we can do to mitigate the risk somehow?