Am 30.12.18 um 10:21 schrieb Andrew Bernard:
Hi David,

What does usable-duration-logs mean? The NR internals section says:

usable-duration-logs (list):
'(-3 -2 -1 0)
List of duration-logs that can be used in typesetting the grob.

This says which rests can be used for a whole measure (depending on its length).

-3 maxima
-2 longa
-1 breve (that’s default for 9/4 time)
0 whole/semibreve
1 half/minim
2 quarter/crotchet
3 eighth/quaver
…

Normally, you wouldn’t use positive logs (rest durations shorter than whole) even for shorter measures like 3/8. But longer measures like 4/2 or 9/4 will get longer rest durations because negative logs are allowed. Setting usable-duration-logs to '(0) allows only whole rests for measures of all lengths.


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