An automated run of parserTests.php showed the following failures:

Running test TODO: Table security: embedded pipes (http://mail.wikipedia.org/pipermail/wikitech-l/2006-April/034637.html)... FAILED! Running test TODO: Link containing double-single-quotes '' (bug 4598)... FAILED! Running test TODO: Template with thumb image (with link in description)... FAILED! Running test TODO: message transform: <noinclude> in transcluded template (bug 4926)... FAILED! Running test TODO: message transform: <onlyinclude> in transcluded template (bug 4926)... FAILED! Running test BUG 1887, part 2: A <math> with a thumbnail- math enabled... FAILED! Running test Basic section headings... FAILED! Running test Section headings with TOC... FAILED! Running test Handling of sections up to level 6 and beyond... FAILED! Running test Resolving duplicate section names... FAILED! Running test Template with sections, __NOTOC__... FAILED! Running test __NOEDITSECTION__ keyword... FAILED! Running test Link inside a section heading... FAILED! Running test TODO: HTML bullet list, unclosed tags (bug 5497)... FAILED! Running test TODO: HTML ordered list, unclosed tags (bug 5497)... FAILED! Running test TODO: HTML nested bullet list, open tags (bug 5497)... FAILED! Running test TODO: HTML nested ordered list, open tags (bug 5497)... FAILED! Running test Fuzz testing: Parser14... FAILED! Running test Fuzz testing: Parser14-table... FAILED! Running test TODO: Parsing optional HTML elements (Bug 6171)... FAILED! Running test TODO: Inline HTML vs wiki block nesting... FAILED! Running test TODO: Mixing markup for italics and bold... FAILED! Running test TODO: 5 quotes, code coverage +1 line... FAILED! Running test TODO: HTML Hex character encoding.... FAILED! Running test TODO: dt/dd/dl test... FAILED!

Passed 412 of 437 tests (94.28%) FAILED!