1diff_cmd () {2"$merge_tool_path" "$LOCAL" "$REMOTE" | cat3}45merge_cmd () {6touch "$BACKUP"7if $base_present8then9"$merge_tool_path" "$LOCAL" "$REMOTE" \10-ancestor "$BASE" -merge "$MERGED" | cat11else12"$merge_tool_path" "$LOCAL" "$REMOTE" \13-merge "$MERGED" | cat14fi15check_unchanged16}