feat: Update subseries presentation

[kesara]

Fixes #1100

With 205c09c, xml2rfc tries to add the correct target for subseries when referencegroup's target attribute is missing.

Updated examples:

Format	Example
XML	draft-foobar-00.xml
Text	draft-foobar-00.txt
HTML	draft-foobar-00.html
PDF	draft-foobar-00.pdf

[ajeanmahoney]

This fix's HTML output matches the current HTML output. However, the text output has line breaks in the URLs, whereas the current layout for text output starts the URL on a new line to prevent some of these breaks.

[cabo]

(off-topic comment: This appears to be one more case where <nobr functionality would help, this time in the bowels of xml2rfc.)

[kesara]

This fix's HTML output matches the current HTML output. However, the text output has line breaks in the URLs, whereas the current layout for text output starts the URL on a new line to prevent some of these breaks.

@ajeanmahoney, I've made appropriate changes. Can you recheck the example outputs? Thanks.

[rjsparks]

I've approved, but wait for @ajeanmahoney review as well.

[ajeanmahoney]

The text output is missing a period between the URL and the "At the time of writing" sentence (the period is there in the HTML and PDF outputs).

The extrapolated URL (when the target is not given) for a STD, BCP, or FYI should be of the form <https://www.rfc-editor.org/info/...>. Currently it shows, for example, <https://www.rfc-editor.org/std/std1>

For the non-subseries referencegroup output, I'd like to see one that contains multiple references, both with and without a target, thanks!

[kesara]

The text output is missing a period between the URL and the "At the time of writing" sentence (the period is there in the HTML and PDF outputs).

I've fixed this.

The extrapolated URL (when the target is not given) for a STD, BCP, or FYI should be of the form <https://www.rfc-editor.org/info/...>. Currently it shows, for example, <https://www.rfc-editor.org/std/std1>

I've fixed this too.

For the non-subseries referencegroup output, I'd like to see one that contains multiple references, both with and without a target, thanks!

See updated files:

Format	Example
XML	draft-foobar-00.xml
Text	draft-foobar-00.txt
HTML	draft-foobar-00.html
PDF	draft-foobar-00.pdf

[cabo]

Can you do an example that has a referencegroup mixed from references to different subseries?

[kesara]

Can you do an example that has a referencegroup mixed from references to different subseries?

@cabo, RPC confirmed that RFCs are not shared between different subseries.
But this is an issue if this happens in the future because the xml2rfc logic looks at the first reference within referencegroup to identify the subseries.
This is because referencegroup element doesn't carry information about the subseries.

[cabo]

I'm fine with this behavior (first reference determines processing) -- I just wanted to make sure that we have considered this (non-)use case.

[kesara]

@ajeanmahoney Any issues with the output changes in #1102 (comment)?

[ajeanmahoney]

I've reviewed the test outputs, and it looks good.