[kmail] [Bug 245924] KMail becomes very slow by rare symbols in email

[Laurent Montel]

https://bugs.kde.org/show_bug.cgi?id=245924

--- Comment #3 from Laurent Montel <montel at kde.org> ---
(In reply to comment #2)
> Created attachment 82371 [details]
> Demonstration mbox file.
> 
> Still an issue in KDE 4.11.1.  Good spot that the problem is the renderer,
> but problem there is that Kmail doesn't seem to allow choosing webkit, and
> always uses khtml.  (if I'm wrong then tell me how !).

yes you are :)
We use qtwebkit in kmail2

> 
> So html mails with even a few non-Western chars (in my case Korean) can take
> a substantial time to render, during which time Kmail2 is frozen and
> unresponsive.
> 
> See the attached sample, which has been anonymised by replacing Latin
> characters with 'x' but leaving the Korean ones in place.  When choosing
> this mail to display, Kmail2 hangs stone cold unresponsive for almost 30
> seconds until it has rendered it.  I do have suitable fonts installed.
> 
> Perhaps this bug should be duplicated, once for kmail to use a better
> renderer and once for khtml to fix its issue ?

not khtml issue if you can reproduce in kmail2

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