From: Petr Baudis <pasky@suse.cz>
Date: Sun, 3 Aug 2008 01:27:01 +0000 (+0200)
Subject: tg.sh: branch_contains(): Using -z instead of wc is faster in the common case
X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ian/git?a=commitdiff_plain;ds=sidebyside;h=1cccede543ce4a1d7aac51042e4b9b2e975453c5;p=topgit.git

tg.sh: branch_contains(): Using -z instead of wc is faster in the common case
---

diff --git a/tg.sh b/tg.sh
index ae3dcda..54b7875 100644
--- a/tg.sh
+++ b/tg.sh
@@ -76,7 +76,7 @@ measure_branch()
 # Whether B1 is a superset of B2.
 branch_contains()
 {
-	[ "$(git rev-list ^"$1" "$2" | wc -l)" -eq 0 ]
+	[ -z "$(git rev-list ^"$1" "$2")" ]
 }
 
 # needs_update NAME [BRANCHPATH...]