Re: Help for \beamExceptions

[Richard Shann]

On Fri, 2015-09-04 at 19:25 +0200, David Kastrup wrote:
> Richard Shann <address@hidden> writes:
> 
> > On Fri, 2015-09-04 at 18:56 +0200, David Kastrup wrote:
> >> Richard Shann <address@hidden> writes:
> >> 
> >> > I seem to have run into a snag with re-writing
> >> > default-time-signature-settings, it works ok if there was previously a
> >> > rule for a time signature, but adding a rule for one (such as 6/8) which
> >> > has none doesn't result in the beaming pattern being used. Here is a
> >> > minimal example. The first bar shows the pattern desired, and this is
> >> > put into the value for 'beamExceptions in the 6/8 alist, but the second
> >> > bar is not then beamed to follow that pattern.
> >> 
> >> That's likely because 6/8 triggers a special case relying on the context
> >> property
> >> 
> >>      (beamHalfMeasure ,boolean? "Whether to allow a beam to begin
> >> halfway through the measure in triple time, which could look like 6/8.")
> >
> > It sounds like I am tackling this at too low a level then. Is there a
> > more user-accessible way of setting the beaming rules for an entire
> > score containing many movements with a variety of time signatures?
> 
> Just unset the darn property if you don't want its effect.

which property do you refer to?

>   At any rate,
> I don't understand why you are not using \overrideTimeSignatureSettings
> to begin with rather than meddling with the alists used internally.

Is that to say that my explanation before "it applies
to a particular instance of a time signature change, the user has to
re-define (or cut and paste) to use it in another part of the score."
was unclear? As far as I can see, \overrideTimeSignatureSettings needs
to be invoked at every time signature, rather than being applied to a
complete book. Please correct me if I am wrong, but at the moment I
don't know how a user can place a something at the top of a LilyPond
file that will result in a particular beaming rule being applied
whenever they use a particular time signature.

Richard