Re: Using Scheme

[Paul Scott]

Trent Johnston wrote:
> Hello,
>  
> I was wondering if someone could help me in using scheme to make a 
> short cut.
>  
> I'm trying to simplify:
>  
> \once \override Beam #'positions = #'( number . number )
>  
> using a shortcut say \manBeam and specify the numbers beginning and 
> ending beam height. I want to use this to alter the height of beams 
> that have accidentals in them or lengthen some shorter beams.
>  
> In 5.4 Advanced tweaks with scheme gives some information about using 
> only the one variable as in the padText example.
I'm not sure what corresponds to that in the 2.8.2 manual but padText 
may exist because of help I got from Nicolas Sceaux.  Here is my code 
for textPad.  You might be able to create what you want from this:

#(use-modules (ice-9 optargs))
#(define* (textPad padding #:optional once?)
 (ly:export   ; this is necessary for using the expression
  ; directly inside a block
  (if once?
   #{ \once \override TextScript #'padding = #$padding #}
   #{ \override TextScript #'padding = #$padding #})))


Paul Scott