Between 2008-08-18 2008-08-20 renameuser started sending html to the irc recentchanges.
It used to be
<rc> [[Special:Log/renameuser]4 renameuser * Bureaucrat * has renamed User:Foo to "Bar": 5 edits. Reason: FooBar
Now it shows:
<rc> [[Special:Log/renameuser]] renameuser * Bureaucrat * has renamed <a href="/w/index.php?title=User:Foo&action=edit&redlink=1" class="new" title="User:Foo (page does not exist)">User:Foo</a> to "<a href="/w/index.php?title=User:Bar&action=edit&redlink=1" class="new" title="User:Bar (page does not exist)">Bar</a>": 5 edits. Reason: FooBar
Version: unspecified
Severity: normal