merge-octopus: abort if index does not match HEAD
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/git-merge-octopus.sh b/git-merge-octopus.sh
index 8643f74..dc2fd1b 100755
--- a/git-merge-octopus.sh
+++ b/git-merge-octopus.sh
@@ -44,6 +44,12 @@
# MRC is the current "merge reference commit"
# MRT is the current "merge result tree"
+if ! git diff-index --quiet --cached HEAD --
+then
+ echo "Error: Your local changes to the following files would be overwritten by merge"
+ git diff-index --cached --name-only HEAD -- | sed -e 's/^/ /'
+ exit 2
+fi
MRC=$(git rev-parse --verify -q $head)
MRT=$(git write-tree)
NON_FF_MERGE=0
