Bugs to do with inline spelling in Thunderbird

Ehsan Akhgari ehsan.akhgari at gmail.com
Mon Nov 24 20:19:09 UTC 2014

Hi Jörg,

Thanks for your interest in helping out with these bugs!  :-)

I think as a first step, it would be really awesome if you can try to 
write a simple test case that reproduces the issue in an HTML page in 
Firefox.  Thunderbird's compose window is similar to a <div 
contenteditable> HTML element in web pages in a lot of ways, but there 
are Thunderbird specific components involved that I am not very familiar 
with.  Coming up with a test case that demonstrates the issue in Firefox 
will greatly help with narrowing down whether this is a core bug or a 
Thunderbird bug.  If we find that this is a core bug, I would be happy 
to try to help you debug and fix it.


On 2014-11-24 2:58 PM, Jörg Knobloch wrote:
> Hi Jan,
> excuse me for writing to you directly. I can see that you worked on
> https://bugzilla.mozilla.org/show_bug.cgi?id=967494 (Ehsan Akhgari to
> review),
> so I assume you have an interest in spell-checking.
> I did a little clean-up today to do with bugs that all report the same:
> That at times, the red misspelling underlines get lost:
> https://bugzilla.mozilla.org/show_bug.cgi?id=922648
> https://bugzilla.mozilla.org/show_bug.cgi?id=1100966
> I'm pretty sure that these two bugs are the same.
> So my question is, I've I wanted to fix this bug, where would I start
> looking?
> I compiled Thunderbird a few weeks ago, but there is just such a lot of
> code that I don't know where to start looking. Obviously the mail
> composition windows is part of the Mozilla "core" editor, and I believe
> the spell checking is too.
> There is another "most hated" bug to do with the editor, in that it
> loses the font/style it should be using:
> https://bugzilla.mozilla.org/show_bug.cgi?id=756984
> This is an ancient bug (carried over from another bug). Ehsan Akhgari
> said something about fixing it (quote: "working hard" in 2011) but so
> far no fix has arrived.
> So any hints would be very welcome. Both bugs affect my daily work, and
> given that these two bugs are as old as Thunderbird and Thunderbird is
> turning 10 years old soon, perhaps we could repair these two annoyances
> one day.
> Kind regards from Berlin, Germany,
> Jörg.

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