Issue 3313: Add the command \offset

[lilypond.git] / scm / c++.scm

diff --git a/scm/c++.scm b/scm/c++.scm
index d627481e5cba9e33243f3c14018e3655b8164ca2..a131e7f3428d95870bcc3ec05b1643fe7d899552 100644 (file)
--- a/scm/c++.scm
+++ b/scm/c++.scm
@@ -25,6 +25,10 @@
   (and (pair? x)
        (number? (car x)) (number? (cdr x))))
 
+(define-public (number-pair-list? x)
+  (and (list? x)
+       (every number-pair? x)))
+
 (define-public (fraction? x)
   (and (pair? x)
        (index? (car x)) (index? (cdr x))))
@@ -51,12 +55,20 @@
 (define-public (symbol-list? x)
   (and (list? x) (every symbol? x)))
 
+(define-public (symbol-list-or-music? x)
+  (if (list? x)
+      (every symbol? x)
+      (ly:music? x)))
+
 (define-public (string-or-symbol? x)
   (or (string? x) (symbol? x)))
 
 (define-public (number-or-string? x)
   (or (number? x) (string? x)))
 
+(define-public (number-or-markup? x)
+  (or (number? x) (markup? x)))
+
 (define-public (string-or-pair? x)
   (or (string? x) (pair? x)))
 
@@ -69,8 +81,10 @@
 (define-public (cheap-list? x)
   (or (pair? x) (null? x)))
 
-(define-public (list-or-symbol? x)
-  (or (cheap-list? x) (symbol? x)))
+(define-public (symbol-list-or-symbol? x)
+  (if (list? x)
+      (every symbol? x)
+      (symbol? x)))
 
 (define-public (scheme? x) #t)
 
@@ -88,8 +102,8 @@
   (if (null? alist)
       "Unknown type"
       (if (apply (caar alist) obj)
-         (cdar alist)
-         (match-predicate obj (cdr alist)))))
+          (cdar alist)
+          (match-predicate obj (cdr alist)))))
 
 (define-public (object-type obj)
   (match-predicate obj type-p-name-alist))