Re: [PATCH 0/7] submodule groups

On Wed, May 11, 2016 at 10:50 PM, Junio C Hamano [off-list ref] wrote:

    git cmd -- \*.perl \*.pl \*.pm

I've often wondered if it would be a good idea to let attributes
file to specify "these paths form the group Perl" with something
like:

    *.pm        group=perl
    *.pl        group=perl
    *.perl      group=perl
    *.h         group=c
    *.c         group=c

and say

    git cmd -- ':(group=perl)'

instead.

How is that different to the file size example I gave earlier?
You could have a change which includes:

    -    *.pl    group=prolog
    +    *.pl   group=perl

What happens in the diff/log case then (just as a file can pass an
arbitrary file size within that change) ? These file attributes are as
arbitrary as sizes as well as submodule labels or names.