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bug#6843: grep-mode and filenames with colons

From: npostavs
Subject: bug#6843: grep-mode and filenames with colons
Date: Sun, 30 Jul 2017 11:01:36 -0400
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/25.2.50 (gnu/linux)

Dmitry Gutov <address@hidden> writes:

> I'd prefer to have either grep-with-null-regexp-alist and
> grep-[without-null-]-regexp-alist, or grep-regexp-alist and
> grep-fallback-regexp-alist. Just a suggestion.


>>> If the numbers are the same, we could keep the variable's name the same as
>>> well. As a result, most third-party code would continue to simply work.
>> Might be worth using explicitly numbered groups to keep the numbers for
>> FILE and COLUMN the same though.
> Yes, I think it will be a good idea. Provided we can combine it with
> renaming either of the variables back to grep-regexp-alist. Otherwise,
> any backward compatibility is broken anyway.

That part is already covered by this, no?

    (defvaralias 'grep-regex-alist 'grep-with-null-regexp-alist)
     'grep-regex-alist "Call `grep-regexp-alist' instead." "26.1")

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