void grammar_current_rule_merge_set (uniqstr name, location loc);
void grammar_current_rule_symbol_append (symbol *sym, location loc);
void grammar_current_rule_action_append (const char *action, location loc);
void grammar_current_rule_merge_set (uniqstr name, location loc);
void grammar_current_rule_symbol_append (symbol *sym, location loc);
void grammar_current_rule_action_append (const char *action, location loc);