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Re: [Ietf-message-headers] [art] X-Face, Face and X-Image-URL header fields

worley@ariadne.com (Dale R. Worley) Mon, 26 September 2016 14:48 UTC

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To: Julien ÉLIE <julien@trigofacile.com>
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Subject: Re: [Ietf-message-headers] [art] X-Face, Face and X-Image-URL header fields
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Julien ÉLIE <julien@trigofacile.com> writes:
> Couldn't the Message Headers IANA registry at 
> <http://www.iana.org/assignments/message-headers/message-headers.xhtml> 
> reference the following three header fields used in mail and news messages?
>
> * X-Face for a black & white image
> * Face for a coloured image
> * X-Image-URL for a link to an image

I doubt there has been any attempt to specify them.  Certainly the ones
starting with "X-" were considered experimental by whoever invented
them.

If I read the IANA page correctly, the registration procedures for
headers are specified in RFC 3864, section 4.

Dale

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