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Re: Suggestion: \breathe should include a \noBeam default option

From: Mats Bengtsson
Subject: Re: Suggestion: \breathe should include a \noBeam default option
Date: Wed, 05 Mar 2008 17:19:36 +0100
User-agent: Thunderbird (X11/20070716)

Your attempt can be simplified, see below. However, after having tried it
on a simple example, I'm no longer so convinced that it's a good idea, since
you typically might want the notes before the breath to be beamed together,
whereas the (equivalent of ) \noBeam removes the beam completely.
This means that you still will have to manually specify the start and
end of the beam.

% Alternative definition of \breathe that also does \noBeam
breathenobeam =
#(define-music-function (parser location) ()
           (make-music 'EventChord
             'origin location
             'elements (list (make-music 'BreathingEvent)
                         (make-music 'BeamForbidEvent))))

% Using default \breathe
\relative c'{
c8 d e \breathe f g f e \breathe d }

% Using the new one
\relative c'{
c8 d e \breathenobeam f g f e \breathenobeam d }

% What you probably want typeset => \breathe and \breathenobeam are just as bad
\relative c'{
c8[ d e] \breathenobeam f g[ f e] \breathe d }


Valentin Villenave wrote:
2008/3/5, Mats Bengtsson <address@hidden>:
Changing the default behaviour to always include the equivalent of \noBeam
 is very easy, just add a line to the definition of \breathe in

I tried to achieve it but it's the first time I write such an advanced function.
Can you please review it?

#(define-music-function (parser location) ()
            (make-music 'SequentialMusic
              'origin location
              'elements   (list (make-music 'EventChord
              'elements   (list
                (make-music 'BeamForbidEvent)))
        (make-music  'EventChord
          'elements (list
       (make-music 'BreathingEvent))))))

        c'8 \breathe d'

 Making it customizable with a context property setting is slightly more
 but can still be done in Scheme.

I have to confess I have no idea how to create the property (nor how
to name it :)

Since this will lead to an incompatible change of the default layout, I
 propose to let convert-ly write out a warning about this change, if \breathe
 is used in the file.

Yes... However, I'm happy to see that you regard it as a potentially
good idea ;)


        Mats Bengtsson
        Signal Processing
        School of Electrical Engineering
        Royal Institute of Technology (KTH)
        SE-100 44  STOCKHOLM
        Phone: (+46) 8 790 8463                         
       Fax:   (+46) 8 790 7260
        Email: address@hidden

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