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Re: [GNU diff] new (?) conditional diff functionality
From: |
Paul Eggert |
Subject: |
Re: [GNU diff] new (?) conditional diff functionality |
Date: |
29 Oct 2003 07:32:43 -0800 |
User-agent: |
Gnus/5.09 (Gnus v5.9.0) Emacs/21.3 |
Frédéric Conrotte <address@hidden> writes:
> I'd like to do some "diff" between old and new sources
> where diff reports differences only IF the new source's code line
> includes this tag.
diff doesn't do that now. It does have an -I option, though, which
may do some of what you want: it ignores changes whose lines all match
a pattern. If you can write a pattern that matches all lines not
containing the tag, then you're partway there.