Last modified: 2012-12-08 22:56:01 UTC
Steps to reproduce:
Enter A<!>B into Sandbox.
By the W3C HTML parser specification, the empty directive <!> acts as a token separator.
Use <<!>I> for terms
use <!---->; lengthy.
Confirmed. Added parser test in r40389
That feature was removed in subsequent revisions of HTML. Compare:
SGML has a lot of cool features, and I'd like to see some of them implemented in wikitext, such as empty end tags </>. But this is not required for an HTML parser. Also, <!> is not valid XML and so not valid XHTML.
In any case, wikitext is not HTML, and does not support all HTML features. This should be considered a feature request, not a bug report, and certainly should not have a failing parser test.