WINDOW_BUFFER    3934 src/window.c   	  Lisp_Object buffer = WINDOW_BUFFER (w);
WINDOW_BUFFER    5454 src/window.c   	      || !NILP (BVAR (XBUFFER (WINDOW_BUFFER (w)), mode_line_format)))
WINDOW_BUFFER    5484 src/window.c   	      || !NILP (BVAR (XBUFFER (WINDOW_BUFFER (w)), header_line_format)))
WINDOW_BUFFER    5518 src/window.c   	      || !NILP (BVAR (XBUFFER (WINDOW_BUFFER (w)), tab_line_format)))