[imp] Subject encoding issue

[qmail at top-consulting.net]

I'm still unsure as to what issue #1 is and it still remains but I did  
make headway with issue #2.

I tracked down the problem to Horde/Text.php in the function  
htmlSpaces(). More precisely, this line:

$charset = NLS::getCharset();

NLS::getCharset always returned UTF-8 even though my subject was  
encoded in ISO-8859-1. Further down, this line was effectively  
emptying out my subject line whenever $charset was set to UTF-8:

$text = @htmlspecialchars($text, ENT_COMPAT, $charset);

For now, I changed $charset = NLS::getCharset(); with $charset =  
NLS::getCharset(TRUE);  which works because now the charset is  
returned as ISO-8859-1

Is this a limitation of the htmlspecialchars() function ?

However, I still have issue #1 present where it shows '?' instead of  
the actual character.

Quoting qmail at top-consulting.net:

> I have two problems, not sure if they are a bug on my server or  
> maybe a bug within IMP.
>
> I am using the latest Horde Webmail distribution:
>
> Horde: 3.3.8
> IMP: 4.3.7
> c-client library: 2007e
> libiconv: 1.13.1
> Dovecot IMAP: 1.2.10
>
> Issue #1.
>
> IMP can't display characters from a different charset in the subject  
> and instead displays a ? instead of the character. In the body of  
> the message the subject displays just fine.
>
> I enabled the rawlog option in Dovecot to see the actual IMAP  
> conversation between IMP and IMAP. When it just gets the message  
> index, for that particular message I see:
>
> * 4 FETCH (INTERNALDATE "11-May-2010 20:22:31 -0400" RFC822.SIZE  
> 2357 FLAGS (\Seen) ENVELOPE ("Tue, 11 May 2010 17:53:34 -0600" {86}
>
> IT-F01 Solicitud de acción de Infraestructura Tecnológica. Otro  
> según detalle adjunto.
>
> Which is perfectly fine. However, in Webmail I see the subject as being:
> IT-F01 Solicitud de acci?n de Infraestructura Tecnol?gica. Otro  
> seg?n detalle adjunto.
>
>
> Issue #2.
>
> IMP shows no subject line at all for messages that contain subjects  
> defined encoded in ISO-8859-1. On the server the subject starts like  
> this:
>
> =?iso-8859-1?Q?FW:_
>
> What could this be ?
>
> Thank you!
>
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