[kmail2] [Bug 494945] "From" name with special character breaks email sending

[Stefan Dösinger]

https://bugs.kde.org/show_bug.cgi?id=494945

--- Comment #3 from Stefan Dösinger <stefandoesinger at gmx.at> ---
I start to believe that this is actually an aarch64 vs x86_64 difference.

On aarch64, kmail believes the "ö" character is valid to send in headers. If I
save the email as a file, the ö is encoded as ISO-8859-1 with character value
0xF6. On x86_64, it is properly escaped.

Other extended characters get escaped properly. If I add some Hebrew character
to my name, the From like has the RFC 2047 coding.

Some other headers, like "X-KMail-Identity-Name:" or the subject are not
affected.

Is it possible there's a signed vs unsigned char bug somewhere? That's the most
obvious difference between x86 and arm I can think of here...

I updated my installation to pull in the accessibility libraries. This did not
fix the problem.

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