Re: git with custom diff for commits

> 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?