125 	unsigned int column;  member
421  * Locking: should be called under the %output_lock to protect the column state
435 			ldata->column = 0;  in do_output_char()
439 			ldata->canon_column = ldata->column = 0;  in do_output_char()
443 		ldata->canon_column = ldata->column;  in do_output_char()
446 		if (O_ONOCR(tty) && ldata->column == 0)  in do_output_char()
451 				ldata->canon_column = ldata->column = 0;  in do_output_char()
454 		ldata->canon_column = ldata->column = 0;  in do_output_char()
457 		spaces = 8 - (ldata->column & 7);  in do_output_char()
461 			ldata->column += spaces;  in do_output_char()
465 		ldata->column += spaces;  in do_output_char()
468 		if (ldata->column > 0)  in do_output_char()
469 			ldata->column--;  in do_output_char()
476 				ldata->column++;  in do_output_char()
495  * Locking: %output_lock to protect column state and space left (also, this is
530  * Locking: %output_lock to protect column state and space left (also, this is
557 				ldata->column = 0;  in process_output_block()
560 			ldata->canon_column = ldata->column;  in process_output_block()
563 			if (O_ONOCR(tty) && ldata->column == 0)  in process_output_block()
567 			ldata->canon_column = ldata->column = 0;  in process_output_block()
572 			if (ldata->column > 0)  in process_output_block()
573 				ldata->column--;  in process_output_block()
580 					ldata->column++;  in process_output_block()
605  * driver at the time of the write, operations like certain changes in column
659 				 * previous tab, we offset by canon column.  in __process_echoes()
673 					if (ldata->column > 0)  in __process_echoes()
674 						ldata->column--;  in __process_echoes()
680 				ldata->canon_column = ldata->column;  in __process_echoes()
685 				if (ldata->column > 0)  in __process_echoes()
686 					ldata->column--;  in __process_echoes()
697 				ldata->column++;  in __process_echoes()
718 				ldata->column += 2;  in __process_echoes()
836  * echo_move_back_col	-	add operation to move back a column
839  * Add an operation to the echo buffer to move back one column.
848  * echo_set_canon_col	-	add operation to set the canon column
851  * Add an operation to the echo buffer to set the canon column to the current
852  * column.
870  * information will be used later, along with canon column (if applicable), to
1351 				/* Record the column of first canon char. */  in n_tty_receive_char_special()
1379 			/* Record the column of first canon char. */  in n_tty_receive_char_special()
1416 		/* Record the column of first canon char. */  in n_tty_receive_char()
2309  * here as well as in the echo processing function to protect the column state
2314  * Locking: output_lock to protect column state and space left