This PR moves the steps to clone an option element into a selectedcontent element from the parsing of an option end tag to a paragraph which specifies that this should happen any time an option is popped off the stack of open elements, which will make the algorithm run even if the author didn't explicitly write a closing option tag.

This was found here: #11653

• At least two implementers are interested (and none opposed):
  • Chrome
  • Gecko
• Tests are written and can be reviewed and commented upon at:
  • https://github.com/html5lib/html5lib-tests/blob/f994590f528ac8b6073665791ddb1ed85c66dfb2/tree-construction/webkit02.dat#L692-L730
• Implementation bugs are filed:
  • Chromium: Already implemented
  • Gecko: https://bugzilla.mozilla.org/show_bug.cgi?id=1933591
  • WebKit: Already implemented? https://bugs.webkit.org/show_bug.cgi?id=299959
• Corresponding HTML AAM & ARIA in HTML issues & PRs: None needed
• MDN issue is filed: None needed
• The top of this comment includes a clear commit message to use.

(See WHATWG Working Mode: Changes for more details.)

/form-elements.html ( diff )
/parsing.html ( diff )