bug#64140: 29.0.91; C-u M-x grep doesn't work correctly after M-x vc-git-grep

[Eli Zaretskii]

> Date: Sun, 18 Jun 2023 02:32:28 +0200
> From:  Daniel Martín via "Bug reports for GNU Emacs,
>  the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>
> 
> Steps to reproduce:
> 
> emacs -Q
> C-x C-f emacs/src/xdisp.c RET
> M-x vc-git-grep RET
> Perform any search.
> Place the point over any symbol, for example, char_can_wrap_before.
> C-u M-x grep
> 
> The suggested grep command to confirm is
> 
> git --no-pager char_can_wrap_before *.c
> 
> which is incorrect, it should be
> 
> grep --color=auto -nH --null -e char_can_wrap_before *.c

You are saying that vc-git-grep should use a separate history
variable?