Re: Make \upbow an empty command + Segmentation fault

[Dan Eble]

On 12/04/14 14:22, Felix Janda wrote:
> Hi,
> 
> say I have a violin part with bowing instructions in a variable. Now I want
> to use the same variable in the full orchestral score but the bowing marks
> should be suppressed.
> 
> \upbow is treated by lilypond as an articulation, but the other
> articulations should be unaffected by the suppressing of \upbow.
> 
> upbow={}
> 
> doesn't work because it breaks things like
> 
> a\upbow ~ a

I’m sorry I haven’t spent time to thoroughly understand your needs, but it 
sounds like there is a chance that something derived from this (which I have 
actually used) would help:

stripArticulation =
#(define-music-function
  (parser location music) (ly:music?)
  (music-filter
   (lambda (m) (not (eq? (ly:music-property m 'name) 'ArticulationEvent)))
   music))

Rather than redefining \upbow, use \stripBowings \yourMusic to filter out the 
articulations you don’t want to see.

Another approach that might work is to put the articulations in a different 
music variable attached to spacers (e.g. “s1”) and then put it in simultaneous 
music like <<\yourMusic \yourBowings>>, but I can’t say much about that because 
I don’t do it.
— 
Dan