[xml2rfc] preferred values for <sourcecode> type

[Alice Russo <[e-mail]>]

An FYI and a proposal regarding <sourcecode> type are below. ("The value of this attribute is free text with certain values designated as preferred." - RFC 7991)

From the FAQ:
> 7.9  What are the preferred values for the type of the <sourcecode> element?
> 
> Please see the list on [1] https://www.rfc-editor.org/materials/sourcecode-types.txt.
> For details, see Section 2.48.4 of [RFC7991].

FYI, since RFC 7991, 'sdp' and 'yangtree' were added to [1].

Proposal: add 'enumerated' to the list, as described in Section 3.5 of RFC 8446 (https://www.rfc-editor.org/rfc/rfc8446#section-3.5).

Use case: in Sections 3 and 4 of https://www.ietf.org/id/draft-bruckert-brainpool-for-tls13-07.txt. Example below.

Please let us know if this is not acceptable. Or, if something more general like 'datatype' is preferred.

Thanks,
Alice
--

example:

<sourcecode type="enumerated">
           enum {
                brainpoolP256r1tls13(31),
                brainpoolP384r1tls13(32),
                brainpoolP512r1tls13(33)
           } NamedGroup;
</sourcecode>