Re: Drawing wavy line across the bars

[Simon Albrecht]

Am 02.04.2017 um 05:56 schrieb Andrew Bernard:
> \version "2.19.58"
>
> {
>   c''4
>   ^\markup { \draw-squiggle-line #1.2 #'(20 . 0) ##t }
> }
>
> NR Section A.11.3.
>
> No custom engraver required.

Well, it’s a start. It could also be made easier accessible using a 
music function, but still the extents will have to be specified 
manually, don’t adapt to layout and can’t be broken. In order to input a 
duration and have it handled elegantly, you would indeed need an 
engraver and a custom grob and event type. I’m sorry I can’t help there; 
there’s one example of a custom Scheme engraver in the regression tests 
and there are several examples to be found in the list archives as well 
as probably in the LSR.

HTH, Simon