mergetool: don't require a work tree for --tool-help

diff --git a/git-p4.py b/git-p4.py
index 8d11b25ae37761a9cfea263bd9a5591c0495fc1c..773cafcd89b6cd89d413e3d51056c4aaf53c1f2c 100755 (executable)
--- a/git-p4.py
+++ b/git-p4.py
@@ -1311,7 +1311,7 @@ def applyCommit(self, id):
             else:
                 die("unknown modifier %s for %s" % (modifier, path))
 
-        diffcmd = "git diff-tree -p \"%s\"" % (id)
+        diffcmd = "git diff-tree --full-index -p \"%s\"" % (id)
         patchcmd = diffcmd + " | git apply "
         tryPatchCmd = patchcmd + "--check -"
         applyPatchCmd = patchcmd + "--check --apply -"