Use number-pair-list? with 'control-points (issue 159450043 by address@hidden)

[david . nalesnik]

Reviewers: ,

Message:
Please review.

Description:
Use number-pair-list? with 'control-points

The predicate number-pair-list? is a better fit than list?.

Please review this at https://codereview.appspot.com/159450043/

Affected files (+1, -1 lines):
  M scm/define-grob-properties.scm


Index: scm/define-grob-properties.scm
diff --git a/scm/define-grob-properties.scm b/scm/define-grob-properties.scm
index  
d6deaec30faa9eee517df088e4c18f72704b9112..54798874db64e1365da38a8ea996c671bd807b70  
100644
--- a/scm/define-grob-properties.scm
+++ b/scm/define-grob-properties.scm
@@ -199,7 +199,7 @@ measure of the closeness of the inner stems.  It is  
used for damping
 the slope of the beam.")
      (connect-to-neighbor ,pair? "Pair of booleans, indicating whether
 this grob looks as a continued break.")
-     (control-points ,list? "List of offsets (number pairs) that form
+     (control-points ,number-pair-list? "List of offsets (number pairs)  
that form
 control points for the tie, slur, or bracket shape.  For B@'eziers,
 this should list the control points of a third-order B@'ezier curve.")
      (count-from ,integer? "The first measure in a measure count