[Rfc-markdown] 1.3.34: map most codeblock classes to <sourcecode> instead of <artwork>

Carsten Bormann <cabo@tzi.org> Thu, 18 February 2021 17:27 UTC

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Subject: [Rfc-markdown] 1.3.34: map most codeblock classes to <sourcecode> instead of <artwork>
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RFCXMLv3 introduces a second element for verbatim text beyond
<artwork>, the <sourcecode> element.
So kramdown-rfc needs to decide whether a codeblock turns into
<sourcecode> or into <artwork>.

1.3.34 now maps all code blocks with a language given to sourcecode,
except if the language is one of (ascii-art binary-art call-flow
hex-dump svg).
(This exception list was appropriated from RFC 7991; the current
xml2rfc documentation doesn't mention call-flow or hex-dump.)



still turns into <artwork>, while

~~~ c
int dezigzag(unsigned int i) {return (i>>1) ^ -(i&1)}

turns into <sourcecode> (with type="c").

Using the "gi" pseudo-attribute, this automatic choice can be
overridden (use gi="artwork" or gi="sourcecode" in an inline attribute

Note that for both artwork and sourcecode, additional attributes need
to be notated as "artwork-foo" (or "sourcecode-foo") in an inline
attribute list, as the codeblock itself turns into a
<figure> around the artwork/sourcecode, so you can have title etc.

An example with an inline attribute list (IAL):

~~~ c
main() { return 1; }
{: #my-little-c-program artwork-name="myli.c" title="My little C program"}

or, to keep the actual source outside the markdown

~~~ c
{::include myli.c}
{: #my-little-c-program artwork-name="myli.c" title="My little C program"}

(kdrfc -c will generate a .v2v3.xml that includes the text, so it can
be directly submitted to the datatracker.)

Note that the conventional type strings listed in [0] are all
lower-case; I'm sorry if this violates your sense of aesthetics as
much as mine :-)

Over at the github issue [77], which this release resolves, we also
discussed using media-type-names (or content-types [1]) as types --
this strikes me as a great convention.

Grüße, Carsten

[0]: https://www.rfc-editor.org/materials/sourcecode-types.txt
[77]: https://github.com/cabo/kramdown-rfc2629/issues/77
[1]: https://www.ietf.org/archive/id/draft-bormann-core-media-content-type-format-02.html