private static final Pattern ALLOWED_WRAPPER_VERSION =
        Pattern.compile("^[0-9.]+(-(rc|milestone|m)-[0-9]+)?$");

    // Keep the same extraction semantics as the old sed:
    //   sed 's/.*gradle-\(.*\)-[a-z]*\.[a-z]*/\1/'
    private static final Pattern WRAPPER_VERSION_EXTRACT =
        Pattern.compile(".*gradle-(.*)-[a-z]*\\.[a-z]*");

        // Pattern uses Object (identity) equality, so we have to reach
        // inside to compare individual fields.
        return Objects.equals(pattern.pattern(), that.pattern.pattern())
            && pattern.flags() == that.pattern.flags();
      }
      return false;
    }

    @Override
    public String toString() {
      String patternString =

    /**
     * Converts to {@link BigInteger}.
     *
     * @param o
     *            The object to convert
     * @param pattern
     *            The pattern string
     * @return The converted {@link BigInteger}
     */
    public static BigInteger toBigInteger(final Object o, final String pattern) {
        if (o == null) {
            return null;
        } else if (o instanceof BigInteger) {
            return (BigInteger) o;

@Singleton
@Deprecated(since = "4.0.0")
public class JdkVersionProfileActivator implements ProfileActivator {

    private static final Pattern FILTER_1 = Pattern.compile("[^\\d._-]");
    private static final Pattern FILTER_2 = Pattern.compile("[._-]");
    private static final Pattern FILTER_3 = Pattern.compile("\\."); // used for split now

    @Override

     *
     * @param cmdList the command list to add properties to
     * @param regex the regular expression pattern to match property names
     */
    protected void addFessCustomSystemProperties(final List<String> cmdList, final String regex) {
        if (StringUtil.isNotBlank(regex)) {
            final Pattern pattern = Pattern.compile(regex);

    @Deprecated(since = "4.0.0")
    String RELEASE_VERSION = "RELEASE";

    @Deprecated(since = "4.0.0")
    String LATEST_VERSION = "LATEST";

    String SNAPSHOT_VERSION = "SNAPSHOT";

    Pattern VERSION_FILE_PATTERN = Pattern.compile("^(.*)-(\\d{8}\\.\\d{6})-(\\d+)$");

    // TODO into artifactScope handler

    String SCOPE_COMPILE = "compile";

    String SCOPE_COMPILE_PLUS_RUNTIME = "compile+runtime";

public class PathMapping extends BsPathMapping {

    private static final Logger logger = LogManager.getLogger(PathMapping.class);

    private static final long serialVersionUID = 1L;

    protected Pattern userAgentPattern;

    protected Pattern regexPattern;

    protected BiFunction<String, Matcher, String> pathMapperFunc;

    public String getId() {
        return asDocMeta().id();
    }

   *     example, {@code "rpc-pool-%d"} will generate thread names like {@code "rpc-pool-0"}, {@code
   *     "rpc-pool-1"}, {@code "rpc-pool-2"}, etc.
   * @return this for the builder pattern
   */
  @CanIgnoreReturnValue
  public ThreadFactoryBuilder setNameFormat(String nameFormat) {
    String unused = format(nameFormat, 0); // fail fast if the format is bad or null
    this.nameFormat = nameFormat;

        .containsExactly("Testing", "rocks", "Debugging", "sucks")
        .inOrder();
  }

  @GwtIncompatible // java.util.regex.Pattern
  private static Pattern literalDotPattern() {
    return Pattern.compile("\\.");
  }

  @GwtIncompatible // java.util.regex.Pattern
  public void testPatternSplitWithDoubleDelimiterOmitEmptyStrings() {
    String doubled = "a..b.c";

    private final Pattern javadocLinkPattern = Pattern.compile("link:\\{javadocPath\\}/(.*?\\.html)");
    // link:https://kotlinlang.org/docs/reference/using-gradle.html#targeting-the-jvm[Kotlin]
    private final Pattern markdownLinkPattern = Pattern.compile("\\[[^]]+]\\([^)^\\\\]+\\)");

    // <a href="javadoc/org/gradle/api/artifacts/dsl/DependencyHandler.html">