Re: \tempo should accept floats

[David Kastrup]

Urs Liska <address@hidden> writes:

> As discussion on https://github.com/wbsoft/python-ly/pull/90 shows
> floating point metronome numbers are surely something LilyPond should
> provide.
>
> \tempo 4 = 60.0
> => error: syntax error, unexpected REAL

So what do you expect to see here as the markup?  "♩ = 60.0" ?  And for
\tempo 4 = #190/7
what do you expect to see here?  "♩ = 12.9"? "♩ = 12.86"?  "♩ = 190/7"?

What for
\tempo 4 = #(/ 190.0 7) ?

I know how to format an integer.  But I have no way to guess what a
composer will want to see for some rational or floating-point number.

If LilyPond "should surely provide", the question is _what_ should it
provide?  I don't see that there is a ready answer for that.

-- 
David Kastrup