Re: [PATCH 0/3] mergetool/difftool cleanup

> David Aguilar <davvid@gmail.com> writes:
> 
> > This is a cleanup series to remove the use of the $status
> > global variable in mergetool/difftool.
> >
> > This should wait until after the current RC series is
> > over but figured I'd send it out.
> >
> > David Aguilar (3):
> >   mergetool--lib: remove use of $status global
> >   difftool--helper: add explicit exit statement
> >   mergetool: simplify conditionals
> >
> >  git-difftool--helper.sh |  2 ++
> >  git-mergetool--lib.sh   | 20 +++++---------------
> >  git-mergetool.sh        | 16 +++++-----------
> >  3 files changed, 12 insertions(+), 26 deletions(-)
> 
> Looked quite straight-forward from a cursory read.
> 
> I tentatively inserted the attached patch before 1/3.  If the series
> was done with that extra step as preliminary clean-up, I wouldn't
> have had to wonder if the hunk at "@@ -130,13" was correct.

> 
> -- >8 --
> From: Junio C Hamano <gitster@pobox.com>
> Date: Fri, 21 Nov 2014 11:17:57 -0800
> Subject: [PATCH] mergetool--lib: remove no-op assignment to $status from setup_user_tool
> 
> Even though setup_user_tool assigns the exit status from "eval
> $merge_tool_cmd" to $status, the variable is overwritten by the
> function it calls next, check_unchanged, without ever getting looked
> at by anybody.  And "return $status" at the end of this function
> returns the value check_unchanged assigned to it (which is the same
> as the value the function returns).  Which makes the assignment a
> no-op.
> 
> Remove it.
> 
> Signed-off-by: Junio C Hamano <gitster@pobox.com>
> ---
>  git-mergetool--lib.sh | 1 -
>  1 file changed, 1 deletion(-)
> 
> diff --git a/git-mergetool--lib.sh b/git-mergetool--lib.sh
> index 2b66351..3e06389 100644
> --- a/git-mergetool--lib.sh
> +++ b/git-mergetool--lib.sh
> @@ -130,7 +130,6 @@ setup_user_tool () {
>  		then
>  			touch "$BACKUP"
>  			( eval $merge_tool_cmd )
> -			status=$?
>  			check_unchanged
>  		else
>  			( eval $merge_tool_cmd )
> -- 
> 2.2.0-rc2-128-ge2b5e8e
>