Re: Delta Compression and UTF-8 Header Values

[Julian Reschke <[e-mail]>]

On 2013-02-08 20:44, James M Snell wrote:
> On Fri, Feb 8, 2013 at 11:35 AM, Poul-Henning Kamp <[e-mail]> wrote:
>> Content-Type: text/plain; charset=ISO-8859-1
>> --------
>> In message <CABP7RbfRLXPpL4=wip=[e-mail]>
>> , James M Snell writes:
>>
>>> So the question is: do we want to allow UTF-8 header values?
>>
>> Jim Gettys famously laid down some principles for X11 development,
>> number 1 and 3 of which are:
>>
>>          1.Do not add new functionality unless an implementor cannot
>>            complete a real application without it.
>>
>>          3.The only thing worse than generalizing from one example
>>            is generalizing from no examples at all.
>>
>> Do we have two examples of what it is that somebody cannot do (in a
>> reasonable way?) without UTF-8 header values ?
>>
>
> AFAIC, the main motivation for allowing UTF-8 headers is to reduce
> (and *eventually* eliminate) the need for
> punycode/pct-encoding/B-codec/Q-codec/RFC5987.
>
> This is not so much a question of enabling a use case that cannot be
> "resonably" done without UTF-8 headers. Rather, it's a question of
> simplifying things for developers by reducing existing complexity (by
> moving that complexity into the protocol).
>
> - James

Indeed.

But note than in practice, B-codec and Q-codec aren't used.

That still leaves us with the other schemes.

Best regards, Julian