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-rwxr-xr-xcontrib/subtree/git-subtree.sh12
1 files changed, 10 insertions, 2 deletions
diff --git a/contrib/subtree/git-subtree.sh b/contrib/subtree/git-subtree.sh
index efbdb720e6..7a39b30ad0 100755
--- a/contrib/subtree/git-subtree.sh
+++ b/contrib/subtree/git-subtree.sh
@@ -485,8 +485,16 @@ copy_or_skip()
p="$p -p $parent"
fi
done
-
- if [ -n "$identical" ]; then
+
+ copycommit=
+ if [ -n "$identical" ] && [ -n "$nonidentical" ]; then
+ extras=$(git rev-list --count $identical..$nonidentical)
+ if [ "$extras" -ne 0 ]; then
+ # we need to preserve history along the other branch
+ copycommit=1
+ fi
+ fi
+ if [ -n "$identical" ] && [ -z "$copycommit" ]; then
echo $identical
else
copy_commit $rev $tree "$p" || exit $?