From e64a88ac7bdd1b25c12ecf3327f6738369c5bac1 Mon Sep 17 00:00:00 2001
From: Remy Bohmer <github@bohmer.net>
Date: Fri, 20 Mar 2020 11:05:29 +0100
Subject: [PATCH] [fix] Gitk fails to open on a bare Git repository on Windows

Running 'git rev-parse --show-toplevel' fails on a bare git repo.
This causes gitk to fail to startup.

Signed-off-by: Remy Bohmer <github@bohmer.net>
---
 gitk-git/gitk | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/gitk-git/gitk b/gitk-git/gitk
index abe4805adedb3c..31f4083c735c24 100755
--- a/gitk-git/gitk
+++ b/gitk-git/gitk
@@ -12599,7 +12599,9 @@ set cdup {}
 if {[expr {[exec git rev-parse --is-inside-work-tree] == "true"}]} {
     set cdup [exec git rev-parse --show-cdup]
 }
-set worktree [exec git rev-parse --show-toplevel]
+if {$hasworktree} {
+    set worktree [exec git rev-parse --show-toplevel]
+}
 setcoords
 makewindow
 catch {