Re: [Evolution] displaying mail source bug?

[guenther <guenther rudersport de>]

On Mon, 2003-04-07 at 18:28, Dan Winship wrote:
> > You say, when viewing a mail as source, the charset value will not be
> > evaluated. Which character set is used then?
> >
> > It feels like 7 bit ANSII and every character not fitting into those 7
> > bit is replaced by a '?' char. Is that true?
>
> Yes.
>
> > The reason why I come up with that: As you said just some minutes
> > before, the Euro symbol really is a 0xA4 byte. That byte and even the
> > German chars äöü are not only _displayed_ as '?', they are _replaced_. I
> > verified that by copying the same string to gedit.
> >
> >
> > As you explained it above, the reason for viewing as source is
> > displaying the headers, not the body. So there is nothing wrong with
> > that. Just wondering, why chars apparently get substituted in the body
> > string opposed to just let them untouched and as-is. Isn't that extra
> > work?
>
> GtkHTML only displays UTF8. The input message is not UTF8, so it has to
> be converted *somehow*. The conversion we make is to strip out non-ASCII
> characters, since without looking at the charset, there's no way to know
> what they mean.

Uh, thinking twice that even explains, why we can make no assumption
about the 8th bit and thus can't display 'ä'. (the *Most* Significant
Bit, speaking in terms of computer science ;-)  Thanks, Dan...

...guenther


-- 
char *t="\10pse\0r\0dtu\0  ghno\x4e\xc8\x79\xf4\xab\x51\x8a\x10\xf4\xf4\xc4";
main(){ char h,m=h=*t++,*x=t+2*h,c,i,l=*x,s=0; for (i=0;i<l;i++){ i%8? c<<=1:
(c=*++x); c&128 && (s+=h); if (!(h>>=1)||!t[s+h]){ putchar(t[s]);h=m;s=0; }}}