}
        source = source.replaceAll(Pattern.quote("${fess.dictionary.path}"), dictionaryPath)//
                .replaceAll(Pattern.quote("${fess.index.codec}"), fessConfig.getIndexCodec())//
                .replaceAll(Pattern.quote("${fess.index.number_of_shards}"), numberOfShards)//
                .replaceAll(Pattern.quote("${fess.index.auto_expand_replicas}"), autoExpandReplicas);

	escaped := false
	quoted := false
	quote := '\x00'
	i := 0
	for _, r := range s {
		switch {
		case escaped:
			escaped = false
		case r == '\\':
			escaped = true
			continue
		case quote != 0:
			if r == quote {
				quote = 0
				continue
			}
		case r == '"' || r == '\'':
			quoted = true
			quote = r
			continue
		case unicode.IsSpace(r):

	{"TrimLeft", "abba", "b", "abba"},
	{"TrimRight", "abba", "a", "abb"},
	{"TrimRight", "abba", "b", "abba"},
	{"Trim", "<tag>", "<>", "tag"},
	{"Trim", "* listitem", " *", "listitem"},
	{"Trim", `"quote"`, `"`, "quote"},
	{"Trim", "\u2C6F\u2C6F\u0250\u0250\u2C6F\u2C6F", "\u2C6F", "\u0250\u0250"},
	{"Trim", "\x80test\xff", "\xff", "test"},
	{"Trim", " Ġ ", " ", "Ġ"},
	{"Trim", " Ġİ0", "0 ", "Ġİ"},
	//empty string tests

    default boolean isTargetPluginVersion(final String version) {
        final Pattern pattern;
        if (StringUtil.isBlank(getPluginVersionFilter())) {
            pattern = Pattern.compile("^" + Pattern.quote(ComponentUtil.getSystemHelper().getProductVersion()) + ".*");
        } else {
            pattern = Pattern.compile(getPluginVersionFilter());
        }
        return pattern.matcher(version).matches();
    }