[kdepim-users] Character encoding in KMail

Ingo Klöcker kloecker at kde.org
Tue Feb 3 19:02:30 GMT 2009

On Tuesday 03 February 2009, phep wrote:
> Anne Wilson a écrit :
> > A new development for me is that when I reply to some messages I
> > get a warning about characters that can not be displayed, and asked
> > whether to drop the characters or change the encoding.  I have
> > looked over the messages in question and don't see anything unusual
> > about them.  Can anyone tell me more about this?
> >
> > I can see the use where there are obvious character problems, even
> > though I can't recognise the problem with regard to Kishore's
> > messages to kde at mail.kde.org which is where the problem is now
> > showing up.
> This probably happens when you reply to messages which are in a
> different encoding from your's and you quote all or part of them.
> E.g. you receive a ISO-8859-X encoded message and you reply to it
> with your default UTF-8. What KMail asks you then is probably what to
> do whith the non-ascci characters of the quoted message : convert
> them to UTF-8 so that your message shall keep coherent (albeit
> converting the original quoted charcaters) or else ... not displaying
> those non-ascii ISO-8859-X characters since there can't be,
> logically, 2 distinct charsets in the same piece of code !
> Note that this is just a guess, Ingo will probably correct ;-)

AFAIK, KMail will not ask you if there's an encoding in the list of 
preferred encodings (under Composer/Charset in the settings dialog) 
which is a superset of the encoding used for the received message. It 
is advisable to put utf-8 into the list of preferred encodings because 
utf-8 is a superset of all encodings. I think by default the list 
consists of two encodings: your local encoding and utf-8.

Kishore's first reply in the "What happened to 'Find in message'?" 
thread contains the character 0xA0 (in hex notation) in the quote of 
Anne's message. I have no idea why KMail seems to have replaced the two 
space characters in "[...] the same job.  Was [...]" with a space 
followed by 0xA0. Could be a bug.

BTW, using KMail 1.9.10, I didn't get an encoding message when replying 
to Kishore's message and the 0xA0 did end up correctly in my reply. 
OTOH, in Anne's reply the 0xA0 was replaced by a '?' (question mark). 
I'll retry with KMail 1.11 when I have finally switched to KDE 4.2.

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