Description: ------------ There's an error in the XHTML Renderer concerning the placement of <p>-Tags when used with headings or <hr />. Headings and <hr /> are not allowed to be nested in <p>-tags. This is a problem when using markup like " this is a test + heading test 2 ---- test3 " This will lead to XHTML validation failures. There will also be <br /> Tags added in front of the Heading and the <hr />-tags, which is not intended, I guess. The only way to work around this without touching the code is changing the markup to " this is a test + heading test 2 ---- test3 " As a temporary workaround I meanwhile changed the "prefilter" rule of my local copy by adding $this->wiki->source = str_replace("\n----\n","\n\n----\n\n", $this->wiki->source); $this->wiki->source = preg_replace("/\n(\\+{1,6}) (.*)\n/m", "\n\n\\1 \\2\n\n", $this->wiki->source); before the stripping of the unnecessary triple-\n's