<custom-a>

Properties
Property	Value

Known Issues

searchParams property does not work due to a bug in our WebIDL bindings
ping and relList properties are impossible to emulate because it is impossible to create instances of DOMTokenList and DOMSettableTokenList
target="", ping="", and download="" attributes have not yet been implemented (if they can be)
Should be focusable (this is a major gap in custom elements functionality)
Does not match :link, :visited, or :any-link CSS pseudoclasses, since the spec hard-codes a as the only tag name allowed to do so (#38)
The default styling is incorrectly placed in the CSS cascade, and so e.g. styling * does not overwrite it (#27)
Does not cause the status bar to show the URL when hovering over it (#39)
Not reflected correctly to accessibility technology (see "Gap Analysis: Accessibility")

Properties
Property	Value

HTMLQuoteElement is shared between <blockquote> and <q>, but you cannot register a single custom element prototype with multiple tag names, so CustomHTMLQuoteElement cannot be used for <custom-q> (#19)
The Blink user agent stylesheet for <blockquote> uses nonstandard properties -webkit-margin-before, -webkit-margin-after, -webkit-margin-start, and -webkit-margin-end, as well as the nonstandard unit __qem (#40)
The default styling is incorrectly placed in the CSS cascade, and so e.g. styling * does not overwrite it (#27)

Properties
Property	Value

Presentational attributes do not work yet
The Blink user agent stylesheet for <hr> uses nonstandard properties -webkit-margin-before, -webkit-margin-after, -webkit-margin-start, and -webkit-margin-end (#40)
The default styling is incorrectly placed in the CSS cascade, and so e.g. styling * does not overwrite it (#27)
Not reflected correctly to accessibility technology (see "Gap Analysis: Accessibility")