]m4_ifval([$6], [%type <ival> 'x' ';' thing line input])[
-%printer { fprintf (yyoutput, "%d@%d-%d", $$, RANGE (@$)); }
- input line thing 'x'
+%printer
+ {
+ ]AT_LALR1_CC_IF([cdebug_ << @$ << ": " << $$;],
+ [fprintf (yyoutput, "%d@%d-%d", $$, RANGE (@$))])[;
+ }
+ input line thing 'x'
%destructor
{ printf ("Freeing nterm input (%d@%d-%d)\n", $$, RANGE (@$)); }