122 	unsigned int column;  member
425  *		 the column state and space left in the buffer
439 			ldata->column = 0;  in do_output_char()
443 			ldata->canon_column = ldata->column = 0;  in do_output_char()
447 		ldata->canon_column = ldata->column;  in do_output_char()
450 		if (O_ONOCR(tty) && ldata->column == 0)  in do_output_char()
455 				ldata->canon_column = ldata->column = 0;  in do_output_char()
458 		ldata->canon_column = ldata->column = 0;  in do_output_char()
461 		spaces = 8 - (ldata->column & 7);  in do_output_char()
465 			ldata->column += spaces;  in do_output_char()
469 		ldata->column += spaces;  in do_output_char()
472 		if (ldata->column > 0)  in do_output_char()
473 			ldata->column--;  in do_output_char()
480 				ldata->column++;  in do_output_char()
498  *	Locking: output_lock to protect column state and space left
534  *	Locking: output_lock to protect column state and space left
563 				ldata->column = 0;  in process_output_block()
566 			ldata->canon_column = ldata->column;  in process_output_block()
569 			if (O_ONOCR(tty) && ldata->column == 0)  in process_output_block()
573 			ldata->canon_column = ldata->column = 0;  in process_output_block()
578 			if (ldata->column > 0)  in process_output_block()
579 				ldata->column--;  in process_output_block()
586 					ldata->column++;  in process_output_block()
613  *	changes in column state are also saved in the buffer and executed
668 				 * previous tab, we offset by canon column.  in __process_echoes()
682 					if (ldata->column > 0)  in __process_echoes()
683 						ldata->column--;  in __process_echoes()
689 				ldata->canon_column = ldata->column;  in __process_echoes()
694 				if (ldata->column > 0)  in __process_echoes()
695 					ldata->column--;  in __process_echoes()
706 				ldata->column++;  in __process_echoes()
727 				ldata->column += 2;  in __process_echoes()
846  *	echo_move_back_col	-	add operation to move back a column
849  *	Add an operation to the echo buffer to move back one column.
859  *	echo_set_canon_col	-	add operation to set the canon column
862  *	Add an operation to the echo buffer to set the canon column
863  *	to the current column.
883  *	canon column (if applicable), to go back the correct number
1354 				/* Record the column of first canon char. */  in n_tty_receive_char_special()
1382 			/* Record the column of first canon char. */  in n_tty_receive_char_special()
1407 		/* Record the column of first canon char. */  in n_tty_receive_char()
2246  *	echo processing function to protect the column state and space
2251  *	Locking: output_lock to protect column state and space left