Thomas Morley <thomasmorle...@gmail.com> writes: > use the predicate symbol-list-or-symbol? > Below a working version, displaying some info as well: > > \version "2.19.8" > > ed = > #(define-music-function (parser location grob mus) > (symbol-list-or-symbol? ly:music?) > ;; displaying some info: > (format #t "\nI'm the list: \t\t\t~a > My first entry is: \t~a > My next entry is: \t~a > My first entry is a symbol? \t~a > My next entry is a symbol? \t~a" > grob > (car grob)
Uh, you should _not_ be using symbol-list-or-symbol? if your code is not prepared to accept a single symbol. In that case, use just symbol-list? as predicate. -- David Kastrup _______________________________________________ lilypond-user mailing list lilypond-user@gnu.org https://lists.gnu.org/mailman/listinfo/lilypond-user
