Re: Should \partial accept music instead of duration?

[Aaron Hill]

On 2022-03-19 7:53 pm, Dan Eble wrote:
> On Mar 19, 2022, at 20:53, Aaron Hill <lilypond@hillvisions.com> wrote:
> ...
> > > > A convert-ly rule would probably not be possible given the limited 
> > > > power
> > > > of regular expressions.  As such, \partial might need to support 
> > > > both
> > > > duration and music arguments.  Initially I thought this might not be
> > > > possible, given that a naked duration can be treated as music; but 
> > > > the
> > > > following does seem to work:
> ...
>
> I wouldn't want to have to explain to users why these turn out 
> different.
>
> \score {
>   \fixed c' {
>     \partial 4. 4.
>   }
> }
>
> \score {
>   \fixed c' {
>     \partial c4. c4.
>   }
> }

Fair point, though the intention here would be that backwards 
compatibility would only need to exist for a time.  A warning could be 
issued whenever a user applies the older syntax; this would inform the 
user of the impending breaking change while still allowing existing code 
to compile.  When it is convenient, a future release would only support 
music as the argument.


-- Aaron Hill