118 	unsigned int column;  member
403  * Locking: should be called under the %output_lock to protect the column state
417 			ldata->column = 0;  in do_output_char()
421 			ldata->canon_column = ldata->column = 0;  in do_output_char()
425 		ldata->canon_column = ldata->column;  in do_output_char()
428 		if (O_ONOCR(tty) && ldata->column == 0)  in do_output_char()
433 				ldata->canon_column = ldata->column = 0;  in do_output_char()
436 		ldata->canon_column = ldata->column = 0;  in do_output_char()
439 		spaces = 8 - (ldata->column & 7);  in do_output_char()
443 			ldata->column += spaces;  in do_output_char()
447 		ldata->column += spaces;  in do_output_char()
450 		if (ldata->column > 0)  in do_output_char()
451 			ldata->column--;  in do_output_char()
458 				ldata->column++;  in do_output_char()
477  * Locking: %output_lock to protect column state and space left (also, this is
507  * Locking: %output_lock to protect column state and space left (also, this is
532 				ldata->column = 0;  in process_output_block()
535 			ldata->canon_column = ldata->column;  in process_output_block()
538 			if (O_ONOCR(tty) && ldata->column == 0)  in process_output_block()
542 			ldata->canon_column = ldata->column = 0;  in process_output_block()
547 			if (ldata->column > 0)  in process_output_block()
548 				ldata->column--;  in process_output_block()
555 					ldata->column++;  in process_output_block()
597 		 * offset by canon column. Otherwise, tab spacing is normal.  in n_tty_process_echo_ops()
609 			if (ldata->column > 0)  in n_tty_process_echo_ops()
610 				ldata->column--;  in n_tty_process_echo_ops()
616 		ldata->canon_column = ldata->column;  in n_tty_process_echo_ops()
621 		if (ldata->column > 0)  in n_tty_process_echo_ops()
622 			ldata->column--;  in n_tty_process_echo_ops()
632 		ldata->column++;  in n_tty_process_echo_ops()
649 		ldata->column += 2;  in n_tty_process_echo_ops()
671  * driver at the time of the write, operations like certain changes in column
810  * echo_move_back_col	-	add operation to move back a column
813  * Add an operation to the echo buffer to move back one column.
822  * echo_set_canon_col	-	add operation to set the canon column
825  * Add an operation to the echo buffer to set the canon column to the current
826  * column.
844  * information will be used later, along with canon column (if applicable), to
1317 			/* Record the column of first canon char. */  in n_tty_receive_char_canon()
1380 			/* Record the column of first canon char. */  in n_tty_receive_char_special()
1417 		/* Record the column of first canon char. */  in n_tty_receive_char()
2337  * here as well as in the echo processing function to protect the column state
2342  * Locking: output_lock to protect column state and space left