Wikimedia Bugzilla is closed!

In exception.log we're getting a dozen or so exceptions a day from Parsoid/Utils.php complaining about "htmlParseEntityRef: no name" when it tries to createDOM()

I think most or all of the calls are from Parsoid/Redlinker->apply() .  The exception originates from various URLs:  ?action=history on a Flow board, Special:Watchlist, Special:RecentChanges, also Special:RecentChangesLinked.

What's confusing me is:

a) Some of these URLs are not even Flow boards, e.g. the following log entry is from
https://www.mediawiki.org/wiki/Special:RecentChangesLinked/Wikimedia_engineering_report/2013/December/summary
Visiting this link generates an exception every time.
b) Do we need to parse redlinks when generating formatter lines?

I don't think any of these manifest something visible to the user, I guess the change line with the exception is skipped.

Sample exception.log entry follows. Many of the 115 or so exceptions in May and June have this stack trace

/wiki/Special:RecentChangesLinked/Wikimedia_engineering_report/2013/December/summary   Exception from line 198 of /usr/local/apache/common-local/php-1.24wmf8/extensions/Flow/includes/Parsoid/Utils.php: htmlParseEntityRef: no name

2014-06-11 22:03:30 mw1029 mediawikiwiki: [ffced3b6] /wiki/Special:RecentChangesLinked/Wikimedia_engineering_report/2013/December/summary   Exception from line 198 of /usr/local/apache/common-local/php-1.24wmf8/extensions/Flow/includes/Parsoid/Utils.php: htmlParseEntityRef: no name

htmlParseStartTag: invalid element name

#0 /usr/local/apache/common-local/php-1.24wmf8/extensions/Flow/includes/Parsoid/Redlinker.php(156): Flow\Parsoid\Utils::createDOM('<?xml encoding=...')
#1 /usr/local/apache/common-local/php-1.24wmf8/extensions/Flow/includes/Parsoid/Controller.php(65): Flow\Parsoid\Redlinker->apply('Topic title <br...', Object(Title))
#2 /usr/local/apache/common-local/php-1.24wmf8/extensions/Flow/includes/Parsoid/Controller.php(52): Flow\Parsoid\Controller->apply('Topic title <br...', Object(Title))
#3 /usr/local/apache/common-local/php-1.24wmf8/extensions/Flow/includes/Templating.php(462): Flow\Parsoid\Controller->getContent(Object(Flow\Model\PostRevision))
#4 /usr/local/apache/common-local/php-1.24wmf8/extensions/Flow/includes/Formatter/RevisionFormatter.php(83): Flow\Templating->getContent(Object(Flow\Model\PostRevision))
#5 /usr/local/apache/common-local/php-1.24wmf8/extensions/Flow/includes/Formatter/RecentChanges.php(26): Flow\Formatter\RevisionFormatter->formatApi(Object(Flow\Formatter\RecentChangesRow), Object(OldChangesList))
#6 /usr/local/apache/common-local/php-1.24wmf8/extensions/Flow/Hooks.php(194): Flow\Formatter\RecentChanges->format(Object(Flow\Formatter\RecentChangesRow), Object(OldChangesList))
#7 [internal function]: FlowHooks::onOldChangesListRecentChangesLine(Object(OldChangesList), '(<a href="/w/in...', Object(RecentChange), Array)
...