Issue 5167/6: Changes: show \markup xxx = ... \etc assignments

[lilypond.git] / lily / semi-tie.cc

diff --git a/lily/semi-tie.cc b/lily/semi-tie.cc
index 049cd029d6c40d56eb9348e81b0639bf9f70cf12..2d0c1133a879f9e769900c014c8ba1c62c7e7bcc 100644 (file)
--- a/lily/semi-tie.cc
+++ b/lily/semi-tie.cc
@@ -49,6 +49,7 @@ ADD_INTERFACE (Semi_tie,
                "head-direction "
                "note-head "
                "thickness "
+               "line-thickness "
               );
 
 MAKE_SCHEME_CALLBACK (Semi_tie, calc_control_points, 1)
@@ -60,7 +61,7 @@ Semi_tie::calc_control_points (SCM smob)
   (void) me->get_property ("direction");
 
   Grob *yparent = me->get_parent (Y_AXIS);
-  if (Semi_tie_column::has_interface (yparent))
+  if (has_interface<Semi_tie_column> (yparent))
     {
       /* trigger positioning. */
       yparent->get_property ("positioning-done");
@@ -89,13 +90,20 @@ bool
 Semi_tie::less (Grob *g1, Grob *g2)
 {
   Item *i1 = dynamic_cast<Item *> (g1);
+  if (!i1)
+    {
+      g1->programming_error ("grob is not a semi-tie");
+      return false;
+    }
+
   Item *i2 = dynamic_cast<Item *> (g2);
-  if (i1 && i2) {
-    return get_position (i1) < get_position (i2);
-  }
+  if (!i2)
+    {
+      g2->programming_error ("grob is not a semi-tie");
+      return true;
+    }
 
-  programming_error ("grob is not a semi-tie");
-  return false;
+  return get_position (i1) < get_position (i2);
 }
 
 Item *