GNU bug report logs - #15452
Comparing files whose name _do_ match a certain pattern

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From: Dani Moncayo <dmoncayo <at> gmail.com>
To: Eric Blake <eblake <at> redhat.com>
Cc: 15452 <at> debbugs.gnu.org
Subject: bug#15452: [bug-diffutils] bug#15452: Comparing files whose name _do_ match a certain pattern
Date: Tue, 24 Sep 2013 16:46:09 +0200

On Tue, Sep 24, 2013 at 4:34 PM, Dani Moncayo <dmoncayo <at> gmail.com> wrote:
>> Ah, but why should we bloat diff when find already gives you what you want:
>>
>> find . -name '*.txt' -exec diff {} other/{} \;
>>
>> will run diff on only files ending in *.txt, when comparing . against
>> other/.
>
> Ah yes, that's one possibility for doing what I want, but I'd
> definitely prefer having the "--include" option, because:
>
> 1. Simplicity: It would be a lot simpler than the find/diff
> combination.  And in the probable case that the "old" directory to
> compare is not the current working directory, things get even more
> complex, because the files in the "new" directory could not be
> expressed in such a simple way ("whatever/{}").
>
> 2. Consistency: Why not having an "--include" option when we have an
> "--exclude" option?

Another reason comes to my mind:

3.  Flexibility: Having the possibility of combining "--include" and
"--exclude" would be quite convenient in some cases.  It would be a
simple way of expressing the intersection of two sets of files.

-- 
Dani Moncayo

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