From: Junio C Hamano <gitster@pobox.com>
Date: Wed, 29 Feb 2012 03:52:23 GMT
Subject: Re: filtering out mode-change-only changes
Message-ID: <7vipiqwb2g.fsf@alter.siamese.dyndns.org>
In-Reply-To: <7vmx82wbmr.fsf@alter.siamese.dyndns.org>

Junio C Hamano <gitster@pobox.com> writes:

> "Neal Kreitzinger" <neal@rsss.com> writes:
>
>> What is the best way to filter out the "mode change only" entries from a 
>> "name-status diff result" listing of changed files?
>> ...
> I do not know about random scripts people write, but there is nothing
> built-in.

Having said that, if we _were_ to do this built-in, an obvious logical
place to do so is to define a new DIFF_OPT_IGNORE_EXECUTABLE_BIT, teach
"--ignore-executable-bit" command line option to diff_opt_parse(), and
then teach diff_resolve_rename_copy() to consider this bit when the code
originally set DIFF_STATUS_MODIFIED.  Instead, the updated code that is
working under --ignore-executable-bit option would drop such a filepair
from diff_queued_diff.

I do not know if such a change is worth doing, though.  It depends on the
real reason why do you have so many "mode change only" changes that would
make rebasing or cherry-picking too troublesome.