Am Mi., 20. Juli 2022 um 18:43 Uhr schrieb Martín Rincón Botero <
[email protected]>:
> Hello,
>
> I grabbed this snippet a while ago from somewhere™ which puts a box
> around music (an "improvisation box"). It works perfectly in Lilypond
> 2.22.1, but not in Lilypond 2.23.3+. Does somebody know how to make it work
> in more recent versions? This is the snippet:
>
Probably better and more inline with what's done internally, let the
classes-entry be done automatically:
#(define (add-grob-definition grob-name grob-entry)
(let* ((meta-entry (assoc-get 'meta grob-entry))
(class (assoc-get 'class meta-entry))
(ifaces-entry (assoc-get 'interfaces meta-entry)))
;; change ly:grob-properties? to list? to work from 2.19.12 back to at
least 2.18.2
(set-object-property! grob-name 'translation-type? ly:grob-properties?)
(set-object-property! grob-name 'is-grob? #t)
(set! ifaces-entry (append (case class
((Item) '(item-interface))
((Spanner) '(spanner-interface))
((Paper_column) '((item-interface
paper-column-interface)))
((System) '((system-interface
spanner-interface)))
(else '(unknown-interface)))
ifaces-entry))
(set! ifaces-entry (uniq-list (sort ifaces-entry symbol<?)))
(set! ifaces-entry (cons 'grob-interface ifaces-entry))
;; add:
(set! meta-entry (assoc-set! meta-entry 'classes (list class)))
(set! meta-entry (assoc-set! meta-entry 'name grob-name))
(set! meta-entry (assoc-set! meta-entry 'interfaces
ifaces-entry))
(set! grob-entry (assoc-set! grob-entry 'meta meta-entry))
(set! all-grob-descriptions
(cons (cons grob-name grob-entry)
all-grob-descriptions))))
HTH,
Harm
