// Patterns for sensitive data - compiled once and cached
    private static final Pattern PASSWORD_PATTERN = Pattern.compile(
            "(?i)(password|passwd|pwd|secret|token|key|credential|auth)([\"']?\\s*[:=]\\s*[\"']?)([^\"',\\s]+)", Pattern.CASE_INSENSITIVE);

    private static final Pattern IP_PATTERN = Pattern.compile("\\b(?:[0-9]{1,3}\\.){3}[0-9]{1,3}\\b");

    // Object pools for performance optimization

 *
 * <p>{@link org.apache.maven.api.DependencyScope} defines when/how a given dependency will be used by the
 * project. This includes compile-time only, runtime, test time, and various other combinations.</p>
 *
 * <h3>Resolution</h3>
 *
 * <p><dfn>Version resolution</dfn> is the process of finding, for a given artifact, a list of

     * @param in the input stream to read the mapping data from
     */
    protected void reload(final MappingUpdater updater, final InputStream in) {
        final Pattern parsePattern = Pattern.compile("(.*)\\s*=>\\s*(.*)\\s*$");
        final List<CharMappingItem> itemList = new ArrayList<>();
        try (BufferedReader reader = new BufferedReader(new InputStreamReader(in, Constants.UTF_8))) {
            long id = 0;

        if (value == null) {
            return null;
        }

        final StringBuffer tunedText = new StringBuffer(value.length());
        final Pattern pattern = Pattern.compile("(\\$\\{([\\w\\.]+)\\})");
        final Matcher matcher = pattern.matcher(value);
        while (matcher.find()) {
            final String key = matcher.group(2);
            String replacement = System.getProperty(key);

     */
    protected void addFessCustomSystemProperties(final List<String> cmdList, final String regex) {
        if (StringUtil.isNotBlank(regex)) {
            final Pattern pattern = Pattern.compile(regex);
            System.getProperties()
                    .keySet()
                    .stream()
                    .filter(k -> k != null && pattern.matcher(k.toString()).matches())

        is set in compile. The single path execution code does not yet support
        all use cases. We fallback to the existing v1 execution paths if your
        model contains the following:
        1.  `sample_weight_mode` in compile
        2.  `weighted_metrics` in compile
        3.  v1 optimizer
        4.  target tensors in compile If you are experiencing any issues because

  private static void checkTryParse(double expected, String input) {
    assertThat(Doubles.tryParse(input)).isEqualTo(Double.valueOf(expected));
    assertThat(input)
        .matches(
            Pattern.compile(
                Doubles.FLOATING_POINT_PATTERN.pattern(), Doubles.FLOATING_POINT_PATTERN.flags()));
  }

  @GwtIncompatible // Doubles.tryParse
  public void testTryParseHex() {

parser and processed by godoc—but it is not compiled directly by gc.
Instead, a separate tool, cgo, processes it to produce three output
files.  The first two, 6g.go and 6c.c, are a Go source file for 6g and
a C source file for 6c; both compile as part of the named package
(gmp, in this example).  The third, gcc.c, is a C source file for gcc;
it compiles into a shared object (.so) that is dynamically linked into
any 6.out that imports the first two files.

     * @throws DictionaryException if the input stream cannot be parsed.
     */
    protected void reload(final StemmerOverrideUpdater updater, final InputStream in) {
        final Pattern parsePattern = Pattern.compile("(.*)\\s*=>\\s*(.*)\\s*$");
        final List<StemmerOverrideItem> itemList = new ArrayList<>();
        try (BufferedReader reader = new BufferedReader(new InputStreamReader(in, Constants.UTF_8))) {
            long id = 0;

    public static final Pattern LUCENE_FIELD_RESERVED_PATTERN = Pattern.compile("([+\\-!\\(\\){}\\[\\]^\"~\\\\:\\p{Zs}]|(&&)|(\\|\\|))"); // "*", "?",

    /** Pattern for detecting reserved characters in Lucene range field queries. */
    public static final Pattern LUCENE_RANGE_FIELD_RESERVED_PATTERN = Pattern.compile("([!\\(\\){}\\[\\]\"~\\\\:\\p{Zs}]|(&&)|(\\|\\|))");