124 	unsigned int column;  member
414  * Locking: should be called under the %output_lock to protect the column state
428 			ldata->column = 0;  in do_output_char()
432 			ldata->canon_column = ldata->column = 0;  in do_output_char()
436 		ldata->canon_column = ldata->column;  in do_output_char()
439 		if (O_ONOCR(tty) && ldata->column == 0)  in do_output_char()
444 				ldata->canon_column = ldata->column = 0;  in do_output_char()
447 		ldata->canon_column = ldata->column = 0;  in do_output_char()
450 		spaces = 8 - (ldata->column & 7);  in do_output_char()
454 			ldata->column += spaces;  in do_output_char()
458 		ldata->column += spaces;  in do_output_char()
461 		if (ldata->column > 0)  in do_output_char()
462 			ldata->column--;  in do_output_char()
469 				ldata->column++;  in do_output_char()
488  * Locking: %output_lock to protect column state and space left (also, this is
523  * Locking: %output_lock to protect column state and space left (also, this is
550 				ldata->column = 0;  in process_output_block()
553 			ldata->canon_column = ldata->column;  in process_output_block()
556 			if (O_ONOCR(tty) && ldata->column == 0)  in process_output_block()
560 			ldata->canon_column = ldata->column = 0;  in process_output_block()
565 			if (ldata->column > 0)  in process_output_block()
566 				ldata->column--;  in process_output_block()
573 					ldata->column++;  in process_output_block()
618 		 * offset by canon column. Otherwise, tab spacing is normal.  in n_tty_process_echo_ops()
630 			if (ldata->column > 0)  in n_tty_process_echo_ops()
631 				ldata->column--;  in n_tty_process_echo_ops()
637 		ldata->canon_column = ldata->column;  in n_tty_process_echo_ops()
642 		if (ldata->column > 0)  in n_tty_process_echo_ops()
643 			ldata->column--;  in n_tty_process_echo_ops()
653 		ldata->column++;  in n_tty_process_echo_ops()
670 		ldata->column += 2;  in n_tty_process_echo_ops()
692  * driver at the time of the write, operations like certain changes in column
831  * echo_move_back_col	-	add operation to move back a column
834  * Add an operation to the echo buffer to move back one column.
843  * echo_set_canon_col	-	add operation to set the canon column
846  * Add an operation to the echo buffer to set the canon column to the current
847  * column.
865  * information will be used later, along with canon column (if applicable), to
1338 			/* Record the column of first canon char. */  in n_tty_receive_char_canon()
1401 			/* Record the column of first canon char. */  in n_tty_receive_char_special()
1438 		/* Record the column of first canon char. */  in n_tty_receive_char()
2344  * here as well as in the echo processing function to protect the column state
2349  * Locking: output_lock to protect column state and space left