Thunderbird:Fix some longstanding bugs

The things that always bug me about TB are mostly bugs that have been around for a long time, back to early suite development, with little attention. In particular, I see a lot of mail composition bugs, especially around HTML and also format=flowed. Part of the problem, I assume, is that the editor code is all gnarly and nobody currently active on the project wants to get that deep into it.

These are some that I think really ought to be given attention:

Mail Editing bugs

Bug 125928: HTML compose, converted to plain text for sending, is marked as format=flowed but is not processed like plain text is for f=f, resulting in badly formatted mail

Bug 155622: Plain Text compose: When you open a saved draft, or Edit <msg> As New, all the flow information is discarded, so the end of every visible line has a hard line break. Restoring all that information is tedious and error-prone.

[More to come...]

--mcow 11:55, 12 Mar 2005 (PST)