1can_diff () {2return 13}45merge_cmd () {6if $base_present7then8touch "$BACKUP"9"$merge_tool_path" \10-base:"$BASE" -mine:"$LOCAL" \11-theirs:"$REMOTE" -merged:"$MERGED"12check_unchanged13else14echo "TortoiseMerge cannot be used without a base" 1>&215return 116fi17}