bug#16921: Suggested grep-files-aliases entry for GNU build systems

[Lars Ingebrigtsen]

Reuben Thomas <rrt@sc3d.org> writes:

> At present, grep-files-aliases suggests "[Mm]akefile*" when you start rgrep 
> in a
> Makefile.am, which is not at all what one usually wants, as it greps through 
> long
> generated files.
>
> I suggest the following pattern, to go just before the Makefile entry:
>
>  ("am" . "Makefile.am GNUmakefile *.mk")
>
> Makefile.am catches automake makefiles, GNUmakefile is often also used for
> GNU-specific hackery (e.g. by gnulib), and *.mk catches other GNU-ery such as
> gnulib's cfg.mk.
>
> Placing the pattern before the Makefile entry means that the latter need not 
> be
> changed, but the new pattern is used for Makefile.am.
>
> The alias "am" is supposed to suggest "automake".

Makes sense to me; I've now added this to Emacs 29.

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