1\version "2.19.22"
2
3\header{
4  texidoc= "Test predicate-based optional music function argument skipping."
5}
6
7\layout { ragged-right = ##t }
8
9test=#(define-scheme-function (str int frac exp)
10       ((string? "def1") (integer? "def2") (number-pair? "def3") list?)
11       (if (not (equal? (list str int frac) exp))
12	(ly:parser-error
13	 (format #f "Expected ~a, got ~a.\n" exp
14	  (list str int frac))
15	 (*location*))))
16
17\test "a" #3 #'(3 . 4) #'("a" 3 (3 . 4))
18\test "a" #3 #'("a" 3 "def3")
19\test "a" #'("a" "def2" "def3")
20\test #'("def1" "def2" "def3")
21