decimal_places=decimal_places,
            **extra,
        )
        if examples is not None:
            kwargs["examples"] = examples
        if regex is not None:
            warnings.warn(
                "`regex` has been deprecated, please use `pattern` instead",
                category=FastAPIDeprecationWarning,
                stacklevel=4,
            )

                                <la:form action="/admin/pathmap/">
                                    <div class="form-group row">
                                        <label for="regex" class="col-sm-2 text-sm-right col-form-label"><la:message
                                                key="labels.regex"/></label>

                                                 data-validation="custom"
                                                 data-validation-regexp="(\+|\-)?\d+(\.\d+)?((e|E)(\+|\-)?\d+)?"
                                                 data-validation-help="number (Float)"/>
                                    </div>
                                </div>

        ),
    ] = None,
    pattern: Annotated[
        str | None,
        Doc(
            """
            RegEx pattern for strings.
            """
        ),
    ] = None,
    regex: Annotated[
        str | None,
        Doc(
            """
            RegEx pattern for strings.
            """
        ),
        deprecated(

  }

  @GwtIncompatible // java.util.regex.Pattern
  public void testPatternSplitWordBoundary_singleCharInput() {
    String string = "f";
    Iterable<String> words = Splitter.on(Pattern.compile("\\b")).split(string);
    assertThat(words).containsExactly("f").inOrder();
  }

  @AndroidIncompatible // Apparently Gingerbread's regex API is buggy.
  @J2ktIncompatible // Kotlin Native's regex is based on Apache Harmony, like old Android

                                    <tbody>
                                    <tr>
                                        <th style="width: 25%"><la:message key="labels.regex"/></th>
                                        <td>${f:h(regex)}<la:hidden property="regex"/></td>
                                    </tr>
                                    <tr>
                                        <th><la:message key="labels.replacement"/></th>

Function&&ke.attributeCheck(t,e));else if(!Re[t]||ve[t]){if(!(Ot(e)&&(Ce.tagNameCheck instanceof RegExp&&b(Ce.tagNameCheck,e)||Ce.tagNameCheck instanceof Function&&Ce.tagNameCheck(e))&&(Ce.attributeNameCheck instanceof RegExp&&b(Ce.attributeNameCheck,t)||Ce.attributeNameCheck instanceof Function&&Ce.attributeNameCheck(t,e))||"is"===t&&Ce.allowCustomizedBuiltInElements&&(Ce.tagNameCheck instanceof RegExp&&b(Ce.tagNameCheck,n)||Ce.tagNameCheck instanceof Function&&Ce.tagNameCheck(n))))return!1}else if(Qe[t]);else...

                                    <label for="regex" class="col-sm-3 text-sm-right col-form-label"><la:message
                                            key="labels.regex"/></label>
                                    <div class="col-sm-9">
                                        <la:errors property="regex"/>
                                        <la:text styleId="regex" property="regex" styleClass="form-control"/>

{* ../../docs_src/query_params_str_validations/tutorial003_an_py310.py hl[10] *}

## Add regular expressions { #add-regular-expressions }

You can define a <dfn title="A regular expression, regex or regexp is a sequence of characters that define a search pattern for strings.">regular expression</dfn> `pattern` that the parameter should match:

{* ../../docs_src/query_params_str_validations/tutorial004_an_py310.py hl[11] *}

    }

    // Test invalid regex in custom properties
    @Test
    public void test_customProperties_invalidRegex() {
        List<String> cmdList = new ArrayList<>();

        try {
            execJob.testAddFessCustomSystemProperties(cmdList, "[invalid(regex");
            fail("Should handle invalid regex");
        } catch (Exception e) {