code: public static Pattern newMustacheTagPattern(Configuration configuration) {
          StringBuilder regex = new StringBuilder();
          regex.append(Pattern.quote(configuration
                  .getStringPropertyValue(EngineConfigurationKey.START_DELIMITER)));
          regex.append(".*?");
          regex.append(Pattern.quote(configuration
                  .getStringPropertyValue(EngineConfigurationKey.END_DELIMITER)));
          return Pattern.compile(regex.toString());
      }
docs: Delimiters are quoted to avoid regexp reserved characters conflict.
  
  @param configuration
  @return the new delimiters pattern