2.3.1 Music function definitions

The general form for defining music functions is:

function =
#(define-music-function
     (parser location arg1 arg2 …)
     (type1? type2? …)
   body)

quite in analogy to Scheme function definitions. More often than not, body will be a LilyPond code block.

For a list of available type predicates, see Predefined type predicates.

See also

Notation Reference: Predefined type predicates.

Installed Files: ‘lily/music-scheme.cc’, ‘scm/c++.scm’, ‘scm/lily.scm’.


Other languages: deutsch, español, français.
About automatic language selection.

LilyPond — Extending v2.19.15 (development-branch).