Re: Whole measure rest in 9/4 time

[Malte Meyn]

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.