[Webkit-unassigned] [Bug 205783] New: RegExp.prototype[Symbol.replace] does not support named capture groups

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=205783

            Bug ID: 205783
           Summary: RegExp.prototype[Symbol.replace] does not support
                    named capture groups
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: All
                OS: All
            Status: NEW
          Severity: Minor
          Priority: P2
         Component: JavaScriptCore
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: shvaikalesh at gmail.com

While String.prototype.replace() works as expected with named capture groups, slow path is not implemented.

Test case:
  /(?<a>.)/[Symbol.replace]("b", "$<a>")

Expected:
  "b"

Actual:
  "$<a>"

ECMA262:
  https://tc39.es/ecma262/#sec-regexp.prototype-@@replace (step 14.j)

Test262:
  https://test262.report/browse/built-ins/RegExp/named-groups/groups-object-subclass-sans.js
  https://test262.report/browse/built-ins/RegExp/named-groups/groups-object-subclass.js

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