From 5a7b9bb3235f78f28b8afc16d3775e8a11783586 Mon Sep 17 00:00:00 2001
From: Richard van der Hoff <richard@matrix.org>
Date: Wed, 5 Apr 2017 14:07:30 +0100
Subject: [PATCH] -u dance

---
 hooks/pre-commit | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hooks/pre-commit b/hooks/pre-commit
index dc0f8ae..971be7f 100755
--- a/hooks/pre-commit
+++ b/hooks/pre-commit
@@ -4,7 +4,7 @@ set -eu
 
 # make the GIT_DIR and GIT_INDEX_FILE absolute, before we change dir
 export GIT_DIR=$(readlink -f `git rev-parse --git-dir`)
-if [ -n "$GIT_INDEX_FILE" ]; then
+if [ -n ${GIT_INDEX_FILE+x} ]; then
     export GIT_INDEX_FILE=$(readlink -f "$GIT_INDEX_FILE")
 fi