Re: Mensural notation: 2 questions

[karl]

Frauke:
> I suspect I'm just being a bit thick...typesetting some mensural notation,

Nice to meet another person like interested!

> and having an issue with the mensural signs/time sigs. It looks like the
> definitions of these in terms of modern time signatures are in half values;
> e.g., "Circle" maps on to 3/2, when it should map on to 3/1.

Yes, that is the usual "we want quarter notes" mindset.
Use something like:

 % for the shown mensuration symbol:
 \set Staff.timeSignatureFraction = #'(3 . 2)

 % for the actual "bar" length:
 \time 3/1

> My second issue is that lilypond initially couldn't seem to find any of the
> various mensural clefs that have a number on the end.
...

As in mensuration sign + proportion, don't know to handle that.
Perhaps something like:

 \set Staff.timeSignatureFraction = #'(3 . 2)
 \time 3/1
 % some magic things to make two time signs to be shown
 \once\override Staff.TimeSignature #'style = #'single-digit
 \time 2/1

Regards,
/Karl Hammar

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