Issue 4840: Make Translator/Performer/Engraver abstract base classes

[lilypond.git] / lily / include / scheme-engraver.hh

diff --git a/lily/include/scheme-engraver.hh b/lily/include/scheme-engraver.hh
index 3cd691578fa5b4b2b83f1ac9ecf5b0007dd979de..286bcdd9952e0110a998eb6fd1644d0d9f741110 100644 (file)
--- a/lily/include/scheme-engraver.hh
+++ b/lily/include/scheme-engraver.hh
@@ -48,6 +48,9 @@ protected:
 private:
   void acknowledge_grob_by_hash (Grob_info info, SCM iface_function_hash);
   void init_acknowledgers (SCM alist, SCM *hash);
+  // For now no description.  In future, something derived from the
+  // definition might make sense.
+  SCM translator_description () const { return SCM_EOL; }
 
   DECLARE_ACKNOWLEDGER (grob);
   DECLARE_END_ACKNOWLEDGER (grob);