bug#29303: 25.2; vc-git-grep should shell-escape FILES

[Robert Pluim]

Eli Zaretskii <eliz@gnu.org> writes:

>> From: Robert Pluim <rpluim@gmail.com>
>> Cc: 29303@debbugs.gnu.org,  gus@inodes.org
>> Date: Wed, 15 Nov 2017 21:36:09 +0100
>> 
>> > Ah.  So we lose support of patterns with embedded whitespace in order
>> > to support the aliases?  Is that desirable?
>> 
>> That's a good question. Note that interactively entering patterns with
>> a space is currently a pain, since grep-read-files uses
>> read-file-name-internal, which attempts to do completion if you type
>> <SPC>. So this would presumably only affect people who have changed
>> grep-files-aliases and have patterns with embedded whitespace.
>
> Maybe we should mention this in the doc string (assuming that your
> proposal indeed fixes the original problem).

It fixes my test case, at least. Gus, have you had a chance to try the
second patch?

Thanks

Robert