Re: [PATCH v2 03/11] git-gui: use --absolute-git-dir

> git-gui uses git rev-parse --git-dir to get the pathname of the
> discovered git repository. The returned value can be relative, and is
> '.' if the current directory is the top of the repository directory
> itself.  git-gui has code to change '.' to [pwd] in this case so that
> subsequent logic runs.
> 
> But, git rev-parse supports --absolute-git-dir from fac60b8925
> ("rev-parse: add option for absolute or relative path formatting",
> 2020-12-13), and included in git 2.31. git-gui requires git >= 2.36, so
> this more useful form is always available. Use --absolute-git-dir to
> always get an absolute path, avoiding the need for other checks, and
> delete the now unneeded code to fix a relative _gitdir.

> 
> Signed-off-by: Mark Levedahl <mlevedahl@gmail.com>
> ---
>  git-gui.sh | 11 ++---------
>  1 file changed, 2 insertions(+), 9 deletions(-)
> 
> diff --git a/git-gui.sh b/git-gui.sh
> index 4a736190a9..233c975786 100755
> --- a/git-gui.sh
> +++ b/git-gui.sh
> @@ -1146,7 +1146,7 @@ if {[catch {
>  	&& [catch {
>  		# beware that from the .git dir this sets _gitdir to .
>  		# and _prefix to the empty string

> -		set _gitdir [git rev-parse --git-dir]
> +		set _gitdir [git rev-parse --absolute-git-dir]
>  		set _prefix [git rev-parse --show-prefix]
>  	} err]} {
>  	load_config 1
> @@ -1155,7 +1155,7 @@ if {[catch {
>  		exit 1
>  	}
>  	if {[catch {
> -		set _gitdir [git rev-parse --git-dir]
> +		set _gitdir [git rev-parse --absolute-git-dir]
>  	} err]} {
>  		catch {wm withdraw .}
>  		error_popup [strcat [mc "Unusable repo/worktree:"] " [pwd] "\n\n$err"]
> @@ -1175,13 +1175,6 @@ if {$hashalgorithm eq "sha1"} {
>  	exit 1
>  }
>  
> -# we expand the _gitdir when it's just a single dot (i.e. when we're being
> -# run from the .git dir itself) lest the routines to find the worktree
> -# get confused
> -if {$_gitdir eq "."} {
> -	set _gitdir [pwd]
> -}
> -
>  if {![file isdirectory $_gitdir]} {
>  	catch {wm withdraw .}
>  	error_popup [strcat [mc "Git directory not found:"] "\n\n$_gitdir"]