>> I expect someone will ask quite soon to choose the decimal mark,
>> too (i.e. point or comma, or even a centered point) for the output
>> of the metronome speed in high resolution. And yes, as I'm from
>> Germany, I would prefer to set the comma, too, and I can read it
>> better when written with a comma.
>
> There are things I'm willing to contribute on a whim, but this isn't
> one of them.
>
> If a property controls this, is it a context property, or another
> kind of property?
It would be a global option to LilyPond, maybe even for the command
line, to activate locale-dependent display of decimal numbers in
scores. Right now we only use locale-independent code.
I suggest to open an issue in the tracker.
Werner