From 73ad179bbbba56c053045c555b7e5f1882380533 Mon Sep 17 00:00:00 2001
From: "Shawn O. Pearce" <spearce@spearce.org>
Date: Sat, 11 Nov 2006 18:42:42 -0500
Subject: [PATCH] git-gui: Use catch rather than array names to check file.

When we reshow the current diff file it can be faster to just fetch
the value from the file_states array than it is to ask for all paths
whose name exactly matches the one we want to show.  This is because
[array names -exact] is O(n) in the number of files.

Signed-off-by: Shawn O. Pearce <spearce@spearce.org>
---
 git-gui | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/git-gui b/git-gui
index 2c4e97236b..e16fcf7346 100755
--- a/git-gui
+++ b/git-gui
@@ -350,11 +350,11 @@ proc clear_diff {} {
 proc reshow_diff {} {
 	global ui_fname_value ui_status_value file_states
 
-	if {$ui_fname_value != {} && [array names file_states \
-		-exact $ui_fname_value] != {}}  {
-		show_diff $ui_fname_value
-	} else {
+	if {$ui_fname_value == {}
+		|| [catch {set s $file_states($ui_fname_value)}]} {
 		clear_diff
+	} else {
+		show_diff $ui_fname_value
 	}
 }