Improve documentation and comments regarding directory traversal API

diff --git a/git-difftool--helper.sh b/git-difftool--helper.sh
index e6558d101062929241cc30cd0272556c3164310b..3d0fe0cd93b393a5f376aa10505e927fbed37f8f 100755 (executable)
--- a/git-difftool--helper.sh
+++ b/git-difftool--helper.sh
@@ -73,9 +73,16 @@ then
        fi
 fi
 
-# Launch the merge tool on each path provided by 'git diff'
-while test $# -gt 6
-do
-       launch_merge_tool "$1" "$2" "$5"
-       shift 7
-done
+if test -n "$GIT_DIFFTOOL_DIRDIFF"
+then
+       LOCAL="$1"
+       REMOTE="$2"
+       run_merge_tool "$merge_tool" false
+else
+       # Launch the merge tool on each path provided by 'git diff'
+       while test $# -gt 6
+       do
+               launch_merge_tool "$1" "$2" "$5"
+               shift 7
+       done
+fi