control characters and Util::clean_text()

[Dennis Melentyev]

Thr, 22/12/2005 в 05:38 -0800, Max Kanat-Alexander wrote:
> On Thu, 2005-12-22 at 13:29 +0200, Dennis Melentyev wrote:
> > So, technically, there is no problem to transmit 8-bit headers but this
> > will violate RFC's.
> 
> 	It causes problems with some mail clients. I've had experience
> customizing a Bugzilla installation to do that, and some of the
> developers complained that it caused problems.
There is no such mail clients in xUSSR :) Alot of mail just use plain 8-bit Subjects. (Yes, violating the RFC)

> > As Dave and I told earlier - the simplest way is to base64/qp encode ALL
> > e-Mail headers. 
> 
> 	I believe that also causes problems with some mail clients. I know
> personally that some mail clients do not properly decode qp-encoded
> subject lines.
Could you name them? 
Afraid, that's limited with old MS Internet Mail, very first MS Outlook
and, probably, early Eudora. Nowadays [almost?] all are Ok with that.
Please, correct me if I'm wrong.

Also, AFAIU, this kind of problem could appear only if you do have 8-bit
in headers. So, every administrator could choose whether provide them or
not in their templates. 
I'm pretty sure, there are no users in xUSSR that will have any problem
with QP/base64 encoding in headers. 
Umlaut's users - your turn!