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-rw-r--r--gitMergeCommon.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/gitMergeCommon.py b/gitMergeCommon.py
index 7e8855c617..1b5bddd467 100644
--- a/gitMergeCommon.py
+++ b/gitMergeCommon.py
@@ -213,7 +213,7 @@ def buildGraph(heads):
# Write the empty tree to the object database and return its SHA1
def writeEmptyTree():
- tmpIndex = os.environ['GIT_DIR'] + '/merge-tmp-index'
+ tmpIndex = os.environ.get('GIT_DIR', '.git') + '/merge-tmp-index'
def delTmpIndex():
try:
os.unlink(tmpIndex)