Re: [PATCH] git gui: Use git diff --submodule when available

[Junio C Hamano <gitster@pobox.com>]

Jens Lehmann <Jens.Lehmann@web.de> writes:

> Changed the use of submodule summary to diff --submodule because the
> implementation in C is much faster than the submodule script. Also a test
> has been added to make sure that the underlying git supports the diff
> option --submodule (which was introduced in 1.6.6).
>
> Signed-off-by: Jens Lehmann <Jens.Lehmann@web.de>
> ---
> @@ -296,16 +304,6 @@ proc start_show_diff {cont_info {add_opts {}}} {
>  		lappend cmd $path
>  	}
>
> -	if {[string match {160000 *} [lindex $s 2]]
> -        || [string match {160000 *} [lindex $s 3]]} {
> -		set is_submodule_diff 1
> -		if {$w eq $ui_index} {
> -			set cmd [list submodule summary --cached -- $path]
> -		} else {
> -			set cmd [list submodule summary --files -- $path]
> -		}
> -	}
> -

Heh, I didn't even know that it originally came from git-gui ;-)