X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=scm%2Fdocument-backend.scm;h=f71689d3c0a9965e8ee88a4cdef6a942736e7df6;hb=e3b1bd9a8a9eccfbcc48f9f44ba20b5a92481868;hp=0195ad9252fc0c84633415529aaa33c4d9199522;hpb=57be7394ffa2e7d7ba6d60548dba563f3409d472;p=lilypond.git

diff --git a/scm/document-backend.scm b/scm/document-backend.scm
index 0195ad9252..f71689d3c0 100644
--- a/scm/document-backend.scm
+++ b/scm/document-backend.scm
@@ -2,7 +2,7 @@
 ;;;;
 ;;;; 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)
@@ -139,10 +139,10 @@ node."
 ;;;;;;;;;;;;;;;;
 
 (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>