pbm_scan_index   6981 src/image.c    	      r = g = b = pbm_scan_index (&p, two_byte);
pbm_scan_index   6986 src/image.c    		r = pbm_scan_index (&p, two_byte);
pbm_scan_index   6987 src/image.c    		g = pbm_scan_index (&p, two_byte);
pbm_scan_index   6988 src/image.c    		b = pbm_scan_index (&p, two_byte);