Method appendReplacement

java/com/google/re2j/Matcher.java:445–450

Appends to sb two strings: the text from the append position up to the beginning of the most recent match, and then the replacement with submatch groups substituted for references of the form $n, where n is the group number in decimal. It advances the append position to where

(StringBuffer sb, String replacement)

   * @throws IndexOutOfBoundsException if replacement refers to an invalid group
   */
  public Matcher appendReplacement(StringBuffer sb, String replacement) {
    StringBuilder result = new StringBuilder();
    appendReplacement(result, replacement);
    sb.append(result);
    return this;
  }

  /**
   * Appends to {@code sb} two strings: the text from the append position up to the beginning of the