https://bugzilla.wikimedia.org/show_bug.cgi?id=65570

[email protected] changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           See Also|                            |https://bugzilla.wikimedia.
                   |                            |org/show_bug.cgi?id=65143
            Summary|Flow: Exceptions Caught:    |Flow: title editing
                   |htmlParseStartTag, and      |exceptions:
                   |htmlParseStartTag           |htmlParseStartTag, and
                   |                            |htmlParseStartTag

--- Comment #1 from [email protected] ---
The PHP exception happens in Parsoid/ReferenceExtractor.php's
extractReferences() when it calls createDOM() to record references in the new
version of the TopicListBlock. I guess the title content isn't escaped
correctly. But Flow should probably not even attempt to record references for
title text since nothing in a title is parsed!

To summarize titles in Fl, HTML tags in titles
* Can cause the exception in this bug.
* Incorrectly take effect while previewing (e.g. <em> and <br> cause italics
and line breaks).
* Turn into &amp; &lt; &gt; pairs when you edit them (bug 65143).

I think we want a Flow topic title to be an unparsed escaped string, so
whatever you enter in it is shown "as is" and has no effect. Limited parsing of
titles is an enhancement request.

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