From 8b4e64d6053204113965ea1b84bd294c9ffeef41 Mon Sep 17 00:00:00 2001
From: Johannes Schindelin <johannes.schindelin@gmx.de>
Date: Mon, 29 May 2017 17:17:23 +0200
Subject: [PATCH] fixup! git-gui: fix exception when trying to stage with empty
 file list

---
 git-gui/git-gui.sh | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/git-gui/git-gui.sh b/git-gui/git-gui.sh
index dbe7abb198..32ede6ad81 100755
--- a/git-gui/git-gui.sh
+++ b/git-gui/git-gui.sh
@@ -2532,7 +2532,13 @@ proc toggle_or_diff {mode w args} {
 		}
 	}
 
-	set path [lindex $file_lists($w) [expr {$lno - 1}]]
+	if {![info exists file_lists]
+		|| ![info exists file_lists($w)]
+		|| [llength $file_lists($w)] < $lno - 1} {
+		set path {}
+	} else {
+		set path [lindex $file_lists($w) [expr {$lno - 1}]]
+	}
 	if {$path eq {}} {
 		set last_clicked {}
 		return