;;;;
;;;; source file of the GNU LilyPond music typesetter
;;;;
-;;;; (c) 2000--2005 Han-Wen Nienhuys <hanwen@cs.uu.nl>
+;;;; (c) 2000--2006 Han-Wen Nienhuys <hanwen@cs.uu.nl>
;;;; Jan Nieuwenhuizen <janneke@gnu.org>
(define (interface-doc-string interface grob-description)
;;;;;;;;;;;;;;;;
(define (lookup-interface name)
- (let* ((entry (hashq-ref (ly:all-grob-interfaces) name '())))
- (if (equal? entry #f)
- (ly:error (_ "unknown interface: ~S") name))
- entry))
+ (let* ((entry (hashq-ref (ly:all-grob-interfaces) name #f)))
+ (if entry
+ entry
+ (ly:error (_ "unknown Grob interface: ~S") name))))
(define (all-interfaces-doc)
(make <texi-node>