design decision needed - how to render "Used properties" for markup-(list-)commands

[Thomas Morley]

Hi,

currently https://gitlab.com/lilypond/lilypond/-/merge_requests/588
is tagged 'needs design', because there are proposals to change the
style how the "Used properties" for markup-(list-)commands should
print in NR.
I've manually [*] created a html-file to demonstrate the default and
the so far made suggestions.
See attached.

Opinions?

Anyway, MR 588 is more a bugfix. Thus I'd prefer not to entangle a
bug-fix with a new design, but to open a new issue or MR for the
latter.

Thanks,
  Harm

[*] I wrote a short .texi-file and used texi2html.
Using texi2pdf aborts. same with texi2any --pdf
No clue why.

   Used properties (current behaviour):
     * number (3)
     * pair ((0 . 0))
     * empty-list (’())

   Used properties (after MR 588):
     * number (3)
     * pair ((0 . 0))
     * empty-list (())

   Used properties (Werner’s proposal):
     * number [default: 3]
     * pair [default: (0 . 0)]
     * empty-list [default: ()]

   Used properties (Michael’s proposal):
     * number, default: 3
     * pair, default: (0 . 0)
     * empty-list, default: ()