Re: [PATCH] gitk: fix --all behavior combined with --not

[Johannes Schindelin <Johannes.Schindelin@gmx.de>]

Hi Heiko,

On Thu, 4 Jul 2019, Heiko Voigt wrote:

> In commit 4d5e1b1319 ("gitk: Show detached HEAD if --all is specified",
> 2014-09-09) the intention was to have detached HEAD shown when the --all
> argument is given.
>
> This was solved by appending HEAD to the revs list. By doing that the
> behavior using the --not argument is now broken, since that inverts the
> meaning of all following arguments passed to git rev-parse.
>
> Lets fix this by prepending HEAD instead of appending, this way there
> can not be any '--not' in front.
>
> This was discovered because
>
> 	gitk --all --not origin/master
>
> does not display the same revs as
>
> 	gitk --all ^origin/master
>
> which it should.
>
> Signed-off-by: Heiko Voigt <hvoigt@hvoigt.net>

Good description.

> ---
>  gitk | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/gitk b/gitk
> index a14d7a1..19d95cd 100755
> --- a/gitk
> +++ b/gitk
> @@ -295,7 +295,7 @@ proc parseviewrevs {view revs} {
>      if {$revs eq {}} {
>  	set revs HEAD
>      } elseif {[lsearch -exact $revs --all] >= 0} {
> -	lappend revs HEAD
> +	linsert revs 0 HEAD

For a moment, I wondered whether there is any case where `HEAD` might not
be appropriate as first argument, but you're right, the revision parsing
machinery allows mixing options and rev arguments.

In short: this patch looks good to me.

Thanks,
Dscho

>      }
>      if {[catch {set ids [eval exec git rev-parse $revs]} err]} {
>  	# we get stdout followed by stderr in $err
> --
> 2.21.0
>
>