marijnh/CodeMirror2 — pull request #499 by eustas (2012-04-18 08:05:45+00:00)
Title: HTML: "implicit-closing" fixes.

1) "colgroup" should not be closed by another "colgroup".
2) recursive closing; example:
<optgroup>
<option>
<optgroup>
3) selfclosers should also grab context; example:
<optgroup>
<option>
<optgroup />