control characters and Util::clean_text()

Thu Dec 22 13:38:43 UTC 2005

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.

> 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.

	-Max
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