Re: [Evolution] Character encoding in 1.4.x

[Mike Gifford <mike openconcept ca>]

Howdy Jeff,

On Sat, 2003-09-13 at 12:43, Jeffrey Stedfast wrote:
> Well, I'm stumped. The way charsets work in Evolution's composer is
> this:
> 1. everything is actually composed in UTF-8 (unicode can represent all
> characters)
> 2. when the user hits Send, a message is constructed from the contents
> of the composer
> 3. the message body text is first checked to see if it contains any
> characters that do not fit within US-ASCII. If it can be represented by
> US-ASCII, we're finished.
> 4. Now we check to see if we can fit the contents into the composer's
> charset (each composer allows you to override the default composer
> charset). if it works, we use this...
> 5. Next we check the default composer charset. If yes, then done.
> 6. Failing the above, we try the user's default mail viewing charset. If
> that works, done.
> 7. if we still haven't found an appropriate charset, we pass the text
> through a "guess me" filter which can recognise 10 to 15 charsets or
> so... all single-byte charsets such as koi8-r, windows-1251, iso-8859-*
> and maybe a few others (I don't have the table in front of me). If none
> of those charsets in the table are appropriate, we fall back to UTF-8

Thanks for this explanation.  

When does the 7-bit/8-bit encoding come into effect?

On Sat, 2003-09-13 at 13:12, Russell wrote to Peter: 
> On 12 Sep 2003, Peter wrote:
> > This message looks fine. I use Evolution and have never adjusted the
> > default character set, which is: Western European, New (ISO-8859-15).
> > I'm not sure you can even change the character encoding in evolution
> > (which I believe is UTF-8).
>
> Your message didn't use 8-bit at all, but 7-bit ASCII
>
>   Content-Type: text/plain
>   Mime-Version: 1.0
>   X-Mailer: Ximian Evolution 1.2.2 (1.2.2-5)
>   Content-Transfer-Encoding: 7bit
>
> No character set was listed at all with your message.


On Sat, 2003-09-13 at 13:37, Russell wrote to Me: 
> On Fri, 12 Sep 2003, Mike Gifford wrote:
>
> > Thanks Peter..  I'm still not sure what's up..  But having 3 folks
> > complain about a similar problem is making me a bit nervous..  If I
> > managed to nail this bug down any more I'll let you know..  Might just
> > be something screwy with sympatico's smtp server.  it's up & down a lot
> > these days.
>
>   I highly doubt that the Sympatico SMTP server is changing your character
> set to Greek:
>
>   Content-Type: text/plain; charset=iso-8859-7
>   Mime-Version: 1.0
>   X-Mailer: Ximian Evolution 1.4.4
>   Content-Transfer-Encoding: 8bit

>   Peter had 7bit encoding and text/plain type without a character set 
> encoding at all.  iso-8859-7 is  (literally) Greek 
> http://czyborra.com/charsets/iso8859.html#ISO-8859-7

Is there somewhere I can just turn off the extra language attribute on the Content-Type?

> so... I guess check that your composer charset value is not iso-8859-7.
> Go to the Edit->Character Encoding menu in the composer. 

I checked there (thought didn't know that it existed here previously),
and it was Western European..  Never the less the test email was:

Content-Type:  text/plain; charset=iso-8859-7
Organization:  OpenConcept Consulting http://www.openconcept.ca

Mime-Version:  1.0
X-Mailer:  Ximian Evolution 1.4.4 
Date: Sun, 14 Sep 2003 15:46:34 -0400
Content-Transfer-Encoding:  8bit
 

this was just a text message, so not sure.  I just tried sending a html
message and the language wasn't listed at all:


Content-Type:  multipart/alternative; boundary="=-xc59HdlW1Q8mJXmxbICf"
Organization:  OpenConcept Consulting http://www.openconcept.ca

Mime-Version:  1.0
X-Mailer:  Ximian Evolution 1.4.4 

Any way to proceed/trouble shoot this any more?

Mike
-- 
Mike Gifford, OpenConcept Consulting
Free Software for Social Change -> http://www.openconcept.ca
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