don't return SCM_UNSPECIFIED in calc-positioning-done.

diff --git a/lily/rest-collision.cc b/lily/rest-collision.cc
index 5825671a17c69eeb84c28020c2c435820b232bb8..588df93abeb33fa99002fd442dcecc0f8716bf1c 100644 (file)
--- a/lily/rest-collision.cc
+++ b/lily/rest-collision.cc
@@ -117,7 +117,7 @@ Rest_collision::calc_positioning_done (SCM smob)
     no partners to collide with
   */
   if (rests.size () + notes.size () < 2)
-    return SCM_UNSPECIFIED;
+    return SCM_BOOL_T;
 
   Real staff_space = Staff_symbol_referencer::staff_space (me);
   /*
@@ -155,7 +155,7 @@ Rest_collision::calc_positioning_done (SCM smob)
              if (ordered_rests[-d].size () > 1)
                ordered_rests[-d][0]->warning (_ ("too many colliding rests"));
 
-             return SCM_UNSPECIFIED;
+             return SCM_BOOL_T;
            }
        }
       while (flip (&d) != LEFT);
@@ -210,14 +210,14 @@ Rest_collision::calc_positioning_done (SCM smob)
          }
 
       if (!rcol)
-       return SCM_UNSPECIFIED;
+       return SCM_BOOL_T;
 
       Grob *rest = Note_column::get_rest (rcol);
       Grob *common = common_refpoint_of_array (notes, rcol, Y_AXIS);
 
       Interval restdim = rcol->extent (common, Y_AXIS);
       if (restdim.is_empty ())
-       return SCM_UNSPECIFIED;
+       return SCM_BOOL_T;
 
       Real staff_space = Staff_symbol_referencer::staff_space (rcol);
       Real minimum_dist = robust_scm2double (me->get_property ("minimum-distance"), 1.0) * staff_space;
@@ -249,7 +249,7 @@ Rest_collision::calc_positioning_done (SCM smob)
 
       Note_column::translate_rests (rcol, discrete_y);
     }
-  return SCM_UNSPECIFIED;
+  return SCM_BOOL_T;
 }
 
 ADD_INTERFACE (Rest_collision,