Fix some bugs in the dynamic engraver and PostScript backend

[lilypond.git] / scm / document-backend.scm

diff --git a/scm/document-backend.scm b/scm/document-backend.scm
index 442a225b55f67cd9f61ceebbd6a5227ca8bdc391..f71689d3c0a9965e8ee88a4cdef6a942736e7df6 100644 (file)
--- a/scm/document-backend.scm
+++ b/scm/document-backend.scm
@@ -2,7 +2,7 @@
 ;;;;
 ;;;; source file of the GNU LilyPond music typesetter
 ;;;; 
-;;;; (c)  2000--2004 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)
@@ -88,7 +88,7 @@ node."
         (ifacedoc (map (lambda (iface)
                          (if (pair? iface)
                              (ref-ify (symbol->string (car iface)))
-                             (error (format "Error making doc of ~s" name))))
+                             (ly:error (_ "pair expected in doc ~s") name)))
                        (reverse ifaces)))
         (engravers (filter
                     (lambda (x) (engraver-makes-grob? name x)) all-engravers-list))
@@ -124,23 +124,25 @@ node."
 
 ;;;;;;;;;; check for dangling backend properties.
 (define (mark-interface-properties entry)
-  (map (lambda (x) (set-object-property! x  'iface-marked #t)) (caddr (cdr entry))))
+  (map (lambda (x) (set-object-property! x 'iface-marked #t))
+       (caddr (cdr entry))))
 
 (map mark-interface-properties interface-description-alist)
 
 (define (check-dangling-properties prop)
   (if (not (object-property prop 'iface-marked))
-      (error  "\ndefine-grob-properties.scm: Can't find interface for property:" prop)))
+      (ly:error (string-append "define-grob-properties.scm: "
+               (_ "can't find interface for property: ~S")) prop)))
 
 (map check-dangling-properties all-backend-properties)
 
 ;;;;;;;;;;;;;;;;
 
 (define (lookup-interface name)
-  (let* ((entry (hashq-ref (ly:all-grob-interfaces) name '())))
-    (if (equal? entry #f)
-       (error "Unknown interface" 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>