private static String normalizeDelimiter(String delim) {
delim = normalizeString(delim, delim);
delim = regularExpressionReplace(delim, '\\');
delim = regularExpressionReplace(delim, '|');
delim = regularExpressionReplace(delim, '(');
delim = regularExpressionReplace(delim, ')');
delim = regularExpressionReplace(delim, '*');
delim = regularExpressionReplace(delim, '+');
delim = regularExpressionReplace(delim, '.');
delim = regularExpressionReplace(delim, '?');
delim = regularExpressionReplace(delim, '[');
delim = regularExpressionReplace(delim, ']');
delim = regularExpressionReplace(delim, '^');
delim = regularExpressionReplace(delim, '{');
delim = regularExpressionReplace(delim, '}');
delim = regularExpressionReplace(delim, '$');
return delim;
}