b4_shared_declarations is no longer what it is. Make it
b4_parser_declaration for instance.
+** glr.cc: %defines
+it should not be mandatory.
+
+** $ and others in epilogue
+A stray $ is a warning in the actions, but an error in the epilogue.
+IMHO, it should not even be a warning in the epilogue.
+
+** obstack_copy etc.
+There seems to be some other interesting functions for obstacks that
+we should consider using.
+
+** stack.hh
+Get rid of it. The original idea is nice, but actually it makes
+the code harder to follow, and uselessly different from the other
+skeletons.
+
** Variable names.
What should we name `variant' and `lex_symbol'?