Re: lilypond ChangeLog Documentation/user/examples....

[Mats Bengtsson]

Quoting Graham Percival <address@hidden>:

> Han-Wen Nienhuys wrote:
> > -A number followed by a period is interpreted as a real number, so
> > -for setting the tempo for dotted notes, an extra space should be
> > -inserted, for example
> > -
> > address@hidden
> > -\midi @{ \tempo 4 . = 120 @}
> > address@hidden example
>
> Is this really the new way to do it?
>
>   \midi {
>     \context {
>       \Score
>       tempoWholesPerMinute = #(ly:make-moment 120 4)
>       }
>     }
>
> I'm sure that there's some reason why "\tempo x = y" is a horrible 
> construct and must be replaced, but
>     \context {
>       \Score
>       tempoWholesPerMinute = #(ly:make-moment y x)
>       }
> looks unnecessarily complicated.  If that's the way it's going to be, 
> I'll document it, but... why this?  Do we want to allow users to have 
> different tempo in different Staff contexts?

Apart from looking complicated, I find it directly confusing. If you 
told me that the property name was "tempoWholesPerMinute", I would 
intuitively expect the value to be a real number. Here it seems that we 
(mis)use ly:make-moment to represent a rational number. Of course, 
that's convenient as long as the beat isn't a dotted note, since you 
can just set x as the
duration of the beat, but it still requires quite some amount of
thinking the first time you see it.

  /Mats