Re: How to catch post-events inside chords in an event listener?

[Lukas-Fabian Moser]

Hi Valentin,

Am 06.02.22 um 20:57 schrieb Valentin Petzel:
> one could try something like this.

Yes, thanks, that's what did after David's explanations as well.

In my situation (where I'm using a custom event type not covered by any 
standard engravers), I can then dispose of the dedicated listener: This 
is essentially what happens for

\version "2.22"

#(define (test_engraver ctx)
    (make-engraver
     (listeners
;;; NOT NEEDED if Tie_engraver is removed
;      ((tie-event engraver event)
;       (format #t "Tie encountered at ~a.\n" (ly:context-current-moment 
ctx)))
      ((note-event engraver event)
       (for-each
        (lambda (art)
          (if (memq 'tie-event (ly:event-property art 'class))
              (format #t "Tie encountered at ~a.\n" 
(ly:context-current-moment ctx))))
        (ly:event-property event 'articulations))))))

\layout {
   \context {
     \Voice
     \consists #test_engraver
     \remove Tie_engraver
   }
}

{
   a4~
   <a~ g'>
   a~
   a
}

(I think it's safe to use memq instead of member.)

I'm just still confused as to the terminology of event "classes" vs. 
event "types" etc. But that's something for next week...

Lukas