should_produce_line_number 1155 src/xdisp.c    static bool should_produce_line_number (struct it *);
should_produce_line_number 9802 src/xdisp.c    	  && should_produce_line_number (it))
should_produce_line_number 24974 src/xdisp.c      bool line_number_needed = should_produce_line_number (it);