Re: git with custom diff for commits

[Matthieu Moy <Matthieu.Moy@imag.fr>]

Johannes Schindelin <Johannes.Schindelin@gmx.de> writes:

> Hi,
>
> On Mon, 17 Dec 2007, Gerald Gutierrez wrote:
>
>> I do a nightly mysqldump of a database and check it into a git 
>> repository. mysqldump generates a timestamp as part of that output which 
>> is causing git to think that the file changes every night when it really 
>> doesn't. The timestamp is simply in an SQL comment.
>> 
>> So what I'd like to do is teach git to ignore that particular SQL 
>> timestamp comment. I've tried to set up an external diff script that 
>> runs diff -I "<<sql timestamp comment>>" that effectively ignores the 
>> timestamp. While this works with "git diff", it seems when git commits, 
>> it still sees the differences.
>> 
>> How do I properly teach git to ignore these types of differences?
>
> You might be interested in reading Documentation/gitattributes.txt, look 
> for "diff driver".

It will show an empty output for "git diff", but I doubt thit will
change anything at commit time. Probably the "filter" thing on the
same file (also "man gitattributes") can help though.

-- 
Matthieu