Re: where is the default auto-beam settings for 2/4 defined?

[Trevor Daniels]

Frédéric Bron wrote Tuesday, September 01, 2009 9:37 PM
>

> In the following example, beams for 8 notes end at 1:4, 2:4, 3:4 
> and 4:4
> but the only thing I can find in scm/auto-beam.scm  about time 2/4 
> is:
>
> ((end 1 32 2 4) . ,(ly:make-moment 1 8))
> ((end 1 32 2 4) . ,(ly:make-moment 2 8))
> ((end 1 32 2 4) . ,(ly:make-moment 3 8))
> How can I revert this rule to make 8 notes grouped by measure?
>
> \version "2.12.2"
> { \time 2/4
>  #(revert-auto-beam-setting '(end 1 8 2 4) 1 4) % does not work
>  \repeat unfold 16 { c'8 }
> }

I don't have the exact 2.12.2 version to hand,
but if scm/auto-beam.scm is as you say there
is no need to revert these settings as they
only affect 32nd notes.  All you need to do is
to change the default beat-grouping:

 \set beatGrouping = #'(2)

In version 2.12.1 (which I have to hand) there
is also a rule which affects all beams.  This
will need reverting if it exists in 2.12.2 with

#(revert-auto-beam-setting '(end * * 2 4) 1 4)

Trevor