`<h-line>` stops all further output

[marcandre]

Unless I'm missing something, <h-line> seems completely broken and skips what comes after the tag (1.4.2):

Hello
<h-line/>
World
<h-line/>
!

Gets converted to:

Hello
<table class="h-line"><tr><th>&nbsp;</th></tr></table>

Note that "World", "!", or the second <h-line> don't seem to appear.

Also, extra attributes are dropped.