return path.replaceAll(Pattern.quote(File.separator), "/");
    }

    /**
     * Converts all line separators in the specified string to a single new line character.
     */
    public static String normaliseLineSeparators(String str) {
        return str == null ? null : convertLineSeparators(str, "\n");
    }

    /**
     * Converts all line separators in the specified string to the specified line separator.
     */

    }

    /**
     * Converts all line separators in the specified string to the platform's line separator.
     */
    public static String toPlatformLineSeparators(String str) {
        logDeprecation();
        return str == null ? null : replaceLineSeparatorsInternalOf(str, getPlatformLineSeparatorInternal());
    }

    /**

    private void writeFirstOccurrenceOfName(String name, Encoder encoder) throws IOException {
        int separator = SEPARATOR_MATCHER.lastIndexIn(name);
        if (separator > 0) {
            String parent = name.substring(0, separator);
            String child = name.substring(separator + 1);
            encoder.writeByte((byte) name.charAt(separator));
            writeName(parent, encoder);
            writeName(child, encoder);
        } else {

            boolean isSeparatorAndDigit(char... separators) {
                return pos < str.length() - 1 && oneOf(separators) && Character.isDigit(str.charAt(pos + 1));
            }

            private boolean oneOf(char... separators) {
                char current = str.charAt(pos);
                for (int i = 0; i < separators.length; i++) {
                    char separator = separators[i];

    }

    /**
     * Converts all line separators in the specified string to the specified line separator.
     */
    @Nullable
    public static String convertLineSeparators(@Nullable String str, String sep) {
        return str == null ? null : replaceLineSeparatorsOf(str, sep);
    }

    /**
     * Converts all line separators in the specified non-null string to the Unix line separator {@code \n}.
     */

        this.quotablePattern = quotablePattern;
    }

    /**
     * Double quotes around args containing whitespace, backslash chars are escaped using double backslash, platform line separators.
     */
    public static ArgWriter unixStyle(PrintWriter writer) {
        return new ArgWriter(writer, true, WHITESPACE);
    }

    public static InternalTransformer<ArgWriter, PrintWriter> unixStyleFactory() {

            boolean isSeparatorAndDigit(char... separators) {
                return pos < str.length() - 1 && oneOf(separators) && Character.isDigit(str.charAt(pos + 1));
            }

            private boolean oneOf(char... separators) {
                char current = str.charAt(pos);
                for (char separator : separators) {
                    if (current == separator) {
                        return true;

        "dash-dash"              | "dash-dash"
        " space prefix"          | "space-prefix"
        "invalid char ąść"       | "invalid-char"
        "many  separators -- "   | "many-separators"
        "--"                     | ""
    }

    }
  }

  /**
   * Called for each line found in the character data passed to {@link #add}.
   *
   * @param line a line of text (possibly empty), without any line separators
   * @param end the line separator; one of {@code "\r"}, {@code "\n"}, {@code "\r\n"}, or {@code ""}
   * @throws IOException if an I/O error occurs
   */
  protected abstract void handleLine(String line, String end) throws IOException;

    }
  }

  /**
   * Called for each line found in the character data passed to {@link #add}.
   *
   * @param line a line of text (possibly empty), without any line separators
   * @param end the line separator; one of {@code "\r"}, {@code "\n"}, {@code "\r\n"}, or {@code ""}
   * @throws IOException if an I/O error occurs
   */
  protected abstract void handleLine(String line, String end) throws IOException;