Re: Feature request

[Marc Hohl]

Am 24.09.2012 13:49, schrieb David Kastrup:
> "Phil Holmes" <address@hidden> writes:
>
> > From: "Werner LEMBERG" <address@hidden>
> >
> > > > Again, with the suggestion above, this is not needed.  This part of
> > > > the rule is that the bracketed note lengths must form a complete bar
> > > > in the current time signature.  If not, an error is thrown.
> > > Here, I go with David.  Just think of notation used sometimes by
> > > Richard Strauss:
> > >
> > >   5 4
> > >   4 4
> > >
> > > which means that the first bar of a two-bar phrase holds 5/4, and the
> > > second one 4/4 (cf. the `aria' of Octavian in the first act of
> > > `Rosenkavalier').  To handle this, we need two beaming instructions:
> > >
> > >   \beaming 5/4 {...}
> > >   \beaming 4/4 {...}
> > >
> > > to redefine the beaming structure for the two bar types.  I think it
> > > looks quite good in general to be able to define beaming structures
> > > like this.
> >
> > Not necessarily.  An alternative would be:
> >
> > \beaming { 8 [ 8 8 8 ] 8 [ 8 8 8 8 8 ] }
> > \beaming { 8 [ 8 8 8 ] 8 [ 8 8 8 ] }
> >
> > which would set the beam patterns for both the current time signatures.
> "both the current time signatures"?  You not just refuse to accept that
> at the call time of \beaming, we don't have a current time signature
> available, but now we even have _two_ of them?
I like the

\beaming 4/4 {...}


variant; I often use several time signatures in a piece. Declaring them at one
instance would make perfect sense:

\beaming 4/4 {...}
\beaming 6/8 {...}
\beaming 3/8 {...}

music = {
  \time 4/4
  ...
  \time 3/8
  ...
  \time 4/4
  ...
  \time 6/8
}

Of course, one has the ability to change the beaming within the piece:

\music = {
  \time 4/4
  \beaming 4/4 { 8 [ 8 8 8 ] [ 8 8 8 8 ] }
  ...
  \beaming 4/4 { 8[ 8 ] 8 8 [ 8 8 8 8 ] }
  ...
}

My 2ct.

Marc

> Presumably you mean with "current time signature" something determined
> from the length of the expression (rendering absurd your suggestion to
> flag an error when the expression is not a whole bar long), but that
> still does not tell us what baseMoment to use.  The total length of a
> 3/4 and a 6/8 measure is the same.