* buildscripts/new-chords.py (help): add help text

[lilypond.git] / lily / hara-kiri-group-spanner.cc

diff --git a/lily/hara-kiri-group-spanner.cc b/lily/hara-kiri-group-spanner.cc
index a8a2d938aee661c69888c25ae1c2af4949f59de9..83a4f2706829c8fea73ad7c38954c8d05e8619be 100644 (file)
--- a/lily/hara-kiri-group-spanner.cc
+++ b/lily/hara-kiri-group-spanner.cc
@@ -3,14 +3,14 @@
 
   source file of the GNU LilyPond music typesetter
 
-  (c)  1998--2002 Jan Nieuwenhuizen <janneke@gnu.org>
+  (c)  1998--2003 Jan Nieuwenhuizen <janneke@gnu.org>
   Han-Wen Nienhuys <hanwen@cs.uu.nl>
 */
 
 #include "axis-group-interface.hh"
 #include "spanner.hh"
 #include "hara-kiri-group-spanner.hh"
-#include "debug.hh"
+#include "warn.hh"
 #include "item.hh"
 
 
@@ -82,18 +82,8 @@ Hara_kiri_group_spanner::add_element (Grob * me, Grob *e)
 }
 
 
-void
-Hara_kiri_group_spanner::set_interface (Grob*me)
-{
-  me->set_interface (ly_symbol2scm ("hara-kiri-group-interface"));
-}
 
 
-bool
-Hara_kiri_group_spanner::has_interface (Grob*me)
-{
-  return me->has_interface (ly_symbol2scm ("hara-kiri-group-interface"));
-}
 
 void 
 Hara_kiri_group_spanner::add_interesting_item (Grob* me,Grob* n)
@@ -101,3 +91,12 @@ Hara_kiri_group_spanner::add_interesting_item (Grob* me,Grob* n)
   me->add_dependency (n);
   Pointer_group_interface::add_grob (me, ly_symbol2scm ("items-worth-living"),n);
 }
+
+
+ADD_INTERFACE (Hara_kiri_group_spanner,"hara-kiri-group-interface",
+  "  As Vertical_group_spanner, but keep track of interesting items.  If       \
+we don't contain any interesting items after linebreaking, then                        \
+gracefully commit suicide.  Objective: don't disgrace Lily by                  \
+typesetting empty lines in orchestral scores.",                                        \
+  "items-worth-living");
+