Re: [PATCH v1 08/11] git-gui: simplify [is_bare] to report if a worktree is known

> git-gui includes proc is_bare, used in several places to make decisions
> on whether a worktree exists, but also in discovery to tell if a
> worktree can be supported.
> 
> But, is_bare is out of date with regard to multiple worktrees, safe
> repository guards, and possibly other relevant features known to git
> rev-parse. Also, is_bare caches its result on the first call, so is not
> useful if a later step in the discovery process finds a worktree.
> 
> So, simplify is_bare to report whether git-gui has a worktree or is
> working only from a repository.
> 
> Signed-off-by: Mark Levedahl <mlevedahl@gmail.com>
> ---
>  git-gui.sh | 25 +------------------------
>  1 file changed, 1 insertion(+), 24 deletions(-)
> 
> diff --git a/git-gui.sh b/git-gui.sh
> index 81789dd..a03eaa7 100755
> --- a/git-gui.sh
> +++ b/git-gui.sh
> @@ -372,7 +372,6 @@ if {[tk windowingsystem] eq "aqua"} {
>  set _appname {Git Gui}
>  set _gitdir {}
>  set _gitworktree {}
> -set _isbare {}
>  set _githtmldir {}
>  set _prefix {}
>  set _reponame {}
> @@ -524,29 +523,7 @@ proc get_config {name} {
>  }
>  
>  proc is_bare {} {
> -	global _isbare
> -	global _gitdir
> -	global _gitworktree
> -
> -	if {$_isbare eq {}} {
> -		if {[catch {
> -			set _bare [git rev-parse --is-bare-repository]
> -			switch  -- $_bare {
> -			true { set _isbare 1 }
> -			false { set _isbare 0}
> -			default { throw }
> -			}
> -		}]} {
> -			if {[is_config_true core.bare]
> -				|| ($_gitworktree eq {}
> -					&& [lindex [file split $_gitdir] end] ne {.git})} {
> -				set _isbare 1
> -			} else {
> -				set _isbare 0
> -			}
> -		}
> -	}
> -	return $_isbare
> +	return [expr {$::_gitworktree eq {}}]
>  }
>  
>  ######################################################################