[webkit-changes] [WebKit/WebKit] a23b77: querySelector() throws exception for -webkit-prefi...

[Anne van Kesteren]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: a23b77e8bca1e6a510f6b23e688695ac68ccdb98
      https://github.com/WebKit/WebKit/commit/a23b77e8bca1e6a510f6b23e688695ac68ccdb98
  Author: Anne van Kesteren <annevk at annevk.nl>
  Date:   2023-12-20 (Wed, 20 Dec 2023)

  Changed paths:
    M LayoutTests/imported/w3c/web-platform-tests/css/css-pseudo/parsing/tree-abiding-pseudo-elements-expected.txt
    M LayoutTests/imported/w3c/web-platform-tests/css/selectors/parsing/parse-part-expected.txt
    M LayoutTests/imported/w3c/web-platform-tests/css/selectors/webkit-pseudo-element-expected.txt
    M Source/WebCore/css/CSSSelectorList.cpp
    M Source/WebCore/css/parser/CSSParserSelector.h
    M Source/WebCore/css/parser/CSSSelectorParser.cpp
    M Source/WebCore/css/parser/CSSSelectorParser.h
    M Source/WebCore/dom/SelectorQuery.cpp

  Log Message:
  -----------
  querySelector() throws exception for -webkit-prefixed pseudo elements
https://bugs.webkit.org/show_bug.cgi?id=149160
rdar://99299129

Reviewed by Antti Koivisto.

SelectorHasInvalidSelectorFunctor which is only used by querySelector()
and friends treated custom pseudo-elements as invalid. This is wrong.
querySelector("::placeholder") and querySelector("::-webkit-asdf") are
perfectly acceptable inputs, they are just supposed to return null.

Also do some minor code cleanup while in the general area.

Canonical link: https://commits.webkit.org/272337@main