[sylpheed:33210] Re: Workaround for buggy MUAs

[Ervin Peters]

Am Tue, 22 Sep 2009 07:23:06 +0200 teilte Colin Leroy
<colin at colino.net> mit:

> On 20 September 2009 at 18h09, Ervin Peters wrote:
> 
> Hi, 
> 
> > if x-Mailer contains ('windows') and x-Mailer contains ('outlook',
> > 'word', 'mapi', 'IIS' ) and ( Content-Type->charset is ISO-8859-1 or
> > Content-Type->charset is ISO-8859-15) then set
> > Content-Type->charset = 'win1252'.
> 
> Windows-1252 is a superset of ISO-8859-1, anyway,

right.

> so anything encoded as ISO-8859-1 can be sucessfully decoded as
> Windows-1252.

but the other way, encoded as win-1252 and decoded as iso-8859-[1|15]
leads to wrong results on heavily used chars in Microsoft products
(autocorrect) because iso-8859-[1|15]is a subset of win-1252.

> Even the
> HTML5 draft says it's a good idea[1].
> 
> [1]
> http://www.whatwg.org/specs/web-apps/current-work/multipage/parsing.html#character-encodings-0
>

These kind of anouncment, not readed carefully enought, might be the
reasen for making those mistakes in windows MUAs. Years ago, I made
this mistake in configuring MUAs on Windows - treating those encodings
as equal, not a super/subset relation.

ervin

-- 
Ervin Peters
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