I've noticed this as well and it is most annoying! I wonder if the latest Bugzilla upgrade fixes this?

(In reply to comment #1)

I've noticed this as well and it is most annoying! I wonder if the latest
Bugzilla upgrade fixes this?

I doubt it has anything to do with Bugzilla directly. Wikimedia has a Bugzilla extension that performs a few auto-linking regexen on Bugzilla comments. I imagine this particular regex just needs a tweak.

I guess that's stuff to solve in
http://svn.wikimedia.org/viewvc/mediawiki/trunk/tools/bugzilla/bugzilla-4.0/extensions/Wikimedia/Extension.pm?view=markup
, whoever wants to give it a try and knows regular expressions.

I noticed on bug 41745 comment 5 that the email I received had a correct link, so I suppose the damage is not permanent.
Also:
2012-11-03 20.56 < jeremyb> why are spaces escaped there?
2012-11-03 20.56 < jeremyb> > match => qr{\brt\ ?\#?(\d+)}i

It only affects the rendering - the XML view at https://bugzilla.wikimedia.org/show_bug.cgi?ctype=xml&id=41745 also shows it correctly.

The issue seems to be that a word boundary

\b

also covers

=

while this is not intended by its author.

Patch at https://gerrit.wikimedia.org/r/#/c/33557/ , review and testing welcome.

Gerrit annoys the hell out of me and wastes my time, so I unassign this though the patch works and is tested. See Gerrit.

Next try: https://gerrit.wikimedia.org/r/#/c/33747/

Created https://rt.wikimedia.org/Ticket/Display.html?id=4126 for deployment.

merged: https://gerrit.wikimedia.org/r/#/c/33747/3/bugzilla-4.0/extensions/Wikimedia/Extension.pm

and deployed in production

and another change to move the Extension.pm from 4.0 to 4.2 directory

https://gerrit.wikimedia.org/r/#/c/39065/

Thanks! Verifying, as it can be seen that these examples are not broken anymore:
https://bugzilla.wikimedia.org/show_bug.cgi?id=18195#c14
https://bugzilla.wikimedia.org/show_bug.cgi?id=41745#c5