git-am: Don't accept an mbox on stdin of we already have a .dotest directory

diff --git a/git-merge-resolve.sh b/git-merge-resolve.sh
index e3b04a0e959676e513a7b7e902ea51927d76e2be..0a8ef216cb8a45df7f900a0c9698bec3e4bb47bb 100755 (executable)
--- a/git-merge-resolve.sh
+++ b/git-merge-resolve.sh
@@ -31,8 +31,14 @@ case "$remotes" in
        exit 2 ;;
 esac
 
+# Give up if this is a baseless merge.
+if test '' = "$bases"
+then
+       exit 2
+fi
+
 git-update-index --refresh 2>/dev/null
-git-read-tree -u -m $bases $head $remotes || exit 2
+git-read-tree -u -m --aggressive $bases $head $remotes || exit 2
 echo "Trying simple merge."
 if result_tree=$(git-write-tree  2>/dev/null)
 then