lookup_id_str     123 symbol.c       		if ((str = lookup_id_str(id)) != 0) {
lookup_id_str     136 symbol.c           if (!(str = lookup_id_str(id))) {
lookup_id_str     453 symbol.c       	    VALUE str = lookup_id_str(RSHIFT((unsigned long)(x),RUBY_SPECIAL_SHIFT));
lookup_id_str     749 symbol.c           if ((str = lookup_id_str(id)) != 0) {