15 #define MODE_CURSOR 0x01
16 #define MODE_WRAP 0x02
17 #define MODE_ORIGIN 0x04
18 #define MODE_AUTOCR 0x08
19 #define MODE_DEFAULT (MODE_CURSOR | MODE_WRAP)
20 #define ATTR_BOLD 0x10
21 #define ATTR_ITALIC 0x20
23 #define ATTR_ALL (ATTR_BOLD | ATTR_ITALIC | ATTR_REV)
24 #define MODE_INSERT 0x100
25 #define MODE_WRAPREADY 0x200
27 #define LIMIT(n, a, b) ((n) < (a) ? (a) : ((n) > (b) ? (b) : (n)))
28 #define BIT_SET(i, b, val) ((val) ? ((i) | (b)) : ((i) & ~(b)))
29 #define OFFSET(r, c) ((r) * pad_cols() + (c))
31 static struct term
*term
;
33 static short *fgs
, *bgs
;
42 /* low level drawing and lazy updating */
44 static int fgcolor(void)
46 int c
= mode
& ATTR_REV
? bg
: fg
;
49 if (mode
& ATTR_ITALIC
)
54 static int bgcolor(void)
56 return mode
& ATTR_REV
? fg
: bg
;
59 /* assumes visible && !lazy */
60 static void _draw_pos(int r
, int c
, int cursor
)
62 int rev
= cursor
&& mode
& MODE_CURSOR
;
64 int fg
= rev
? bgs
[i
] : fgs
[i
];
65 int bg
= rev
? fgs
[i
] : bgs
[i
];
66 pad_put(screen
[i
], r
, c
, fg
, bg
);
69 /* assumes visible && !lazy */
70 static void _draw_row(int r
)
73 pad_blankrow(r
, bgcolor());
74 for (i
= 0; i
< pad_cols(); i
++) {
75 int c
= screen
[OFFSET(r
, i
)];
76 if ((c
&& c
!= ' ') || bgs
[OFFSET(r
, i
)] != bgcolor())
81 static int candraw(int sr
, int er
)
85 for (i
= sr
; i
< er
; i
++)
87 return visible
&& !lazy
;
90 static void draw_rows(int sr
, int er
)
94 for (i
= sr
; i
< er
; i
++)
98 static void draw_cols(int r
, int sc
, int ec
)
101 if (candraw(r
, r
+ 1))
102 for (i
= sc
; i
< ec
; i
++)
106 static void draw_char(int ch
, int r
, int c
)
108 int i
= OFFSET(r
, c
);
112 if (candraw(r
, r
+ 1))
116 static void draw_cursor(int put
)
118 if (candraw(row
, row
+ 1))
119 _draw_pos(row
, col
, put
);
122 static void lazy_start(void)
124 memset(dirty
, 0, sizeof(term
->dirty
));
128 static void lazy_flush(void)
131 if (!visible
|| !lazy
)
133 for (i
= 0; i
< pad_rows(); i
++)
137 _draw_pos(row
, col
, 1);
141 static void screen_reset(int i
, int n
)
144 candraw(i
/ pad_cols(), (i
+ n
) / pad_cols() + 1);
145 memset(screen
+ i
, 0, n
* sizeof(*screen
));
146 for (c
= 0; c
< n
; c
++)
148 for (c
= 0; c
< n
; c
++)
152 static void screen_move(int dst
, int src
, int n
)
155 candraw(MIN(src
, dst
) / pad_cols(), (MAX(src
, dst
) + n
) / pad_cols() + 1);
157 candraw((MIN(src
, dst
) + n
) / pad_cols(), MAX(src
, dst
) / pad_cols() + 1);
158 memmove(screen
+ dst
, screen
+ src
, n
* sizeof(*screen
));
159 memmove(fgs
+ dst
, fgs
+ src
, n
* sizeof(*fgs
));
160 memmove(bgs
+ dst
, bgs
+ src
, n
* sizeof(*bgs
));
163 /* terminal input buffering */
165 #define PTYLEN (1 << 16)
167 static char ptybuf
[PTYLEN
]; /* always emptied in term_read() */
168 static int ptylen
; /* buffer length */
169 static int ptycur
; /* current offset */
171 static int waitpty(int us
)
173 struct pollfd ufds
[1];
174 ufds
[0].fd
= term
->fd
;
175 ufds
[0].events
= POLLIN
;
176 return poll(ufds
, 1, us
) <= 0;
179 static int readpty(void)
183 return (unsigned char) ptybuf
[ptycur
++];
187 while ((nr
= read(term
->fd
, ptybuf
+ ptylen
, PTYLEN
- ptylen
)) > 0)
189 if (!ptylen
&& errno
== EAGAIN
&& !waitpty(100))
190 ptylen
= read(term
->fd
, ptybuf
, PTYLEN
);
192 return ptylen
> 0 ? (unsigned char) ptybuf
[0] : -1;
195 /* term interface functions */
197 void term_send(int c
)
201 write(term
->fd
, &b
, 1);
204 static void term_sendstr(char *s
)
207 write(term
->fd
, s
, strlen(s
));
210 static void term_blank(void)
212 screen_reset(0, pad_rows() * pad_cols());
214 pad_blank(bgcolor());
217 static void ctlseq(void);
221 while (ptycur
< ptylen
) {
222 if (visible
&& !lazy
&& ptylen
- ptycur
> 15)
229 static void term_reset(void)
240 static int _openpty(int *master
, int *slave
)
245 if ((*master
= open("/dev/ptmx", O_RDWR
)) == -1)
247 if (ioctl(*master
, TIOCSPTLCK
, &unlock
) == -1)
249 if (ioctl(*master
, TIOCGPTN
, &ptyno
) == -1)
251 sprintf(name
, "/dev/pts/%d", ptyno
);
252 *slave
= open(name
, O_RDWR
| O_NOCTTY
);
256 static void _login(int fd
)
259 winp
.ws_col
= pad_cols();
260 winp
.ws_row
= pad_rows();
264 ioctl(fd
, TIOCSCTTY
, NULL
);
265 ioctl(fd
, TIOCSWINSZ
, &winp
);
273 #define MAXENV (1 << 8)
275 static void envcpy(char **d
, char **s
)
282 static void execvep(char *cmd
, char **argv
, char **envp
)
285 char *p
= getenv("PATH");
286 execve(cmd
, argv
, envp
);
289 while (*p
&& *p
!= ':')
293 execve(path
, argv
, envp
);
299 extern char **environ
;
300 void term_exec(char **args
)
303 memset(term
, 0, sizeof(*term
));
304 if (_openpty(&master
, &slave
) == -1)
306 if ((term
->pid
= fork()) == -1)
309 char *envp
[MAXENV
] = {"TERM=linux"};
310 envcpy(envp
+ 1, environ
);
313 execvep(args
[0], args
, envp
);
318 fcntl(term
->fd
, F_SETFD
, fcntl(term
->fd
, F_GETFD
) | FD_CLOEXEC
);
319 fcntl(term
->fd
, F_SETFL
, fcntl(term
->fd
, F_GETFL
) | O_NONBLOCK
);
321 memset(term
->hist
, 0, sizeof(term
->hist
));
324 static void misc_save(struct term_state
*state
)
333 static void misc_load(struct term_state
*state
)
342 void term_save(struct term
*term
)
347 misc_save(&term
->cur
);
353 void term_redraw(int all
)
358 memset(dirty
, 1, sizeof(term
->dirty
));
367 void term_load(struct term
*t
, int flags
)
370 misc_load(&term
->cur
);
371 screen
= term
->screen
;
385 memset(term
, 0, sizeof(*term
));
386 term_load(term
, visible
);
391 static int writeutf8(char *dst
, int c
)
396 *d
++ = 0xf0 | (c
>> 18);
398 } else if (c
> 0x7ff) {
399 *d
++ = 0xe0 | (c
>> 12);
401 } else if (c
> 0x7f) {
402 *d
++ = 0xc0 | (c
>> 6);
405 *d
++ = c
> 0 ? c
: ' ';
409 *d
++ = 0x80 | ((c
>> (l
* 6)) & 0x3f);
413 void term_screenshot(void)
416 int fd
= open(SCRSHOT
, O_CREAT
| O_TRUNC
| O_WRONLY
, 0600);
418 for (i
= 0; i
< pad_rows(); i
++) {
420 for (j
= 0; j
< pad_cols(); j
++)
421 if (~screen
[OFFSET(i
, j
)] & DWCHAR
)
422 s
+= writeutf8(s
, screen
[OFFSET(i
, j
)]);
424 write(fd
, buf
, s
- buf
);
429 /* high-level drawing functions */
431 static void empty_rows(int sr
, int er
)
433 screen_reset(OFFSET(sr
, 0), (er
- sr
) * pad_cols());
436 static void blank_rows(int sr
, int er
)
443 #define HISTROW(pos) (term->hist + ((term->histtail + NHIST - (pos)) % NHIST) * pad_cols())
445 static void scrl_rows(int nr
)
448 for (i
= 0; i
< nr
; i
++) {
449 memcpy(HISTROW(0), screen
+ i
* pad_cols(),
450 pad_cols() * sizeof(screen
[0]));
451 term
->histtail
= (term
->histtail
+ 1) % NHIST
;
455 void term_hist(int scrl
)
463 memset(dirty
, 1, sizeof(term
->dirty
));
464 for (i
= 0; i
< pad_rows(); i
++) {
465 int off
= (i
- scrl
) * pad_cols();
466 int *_scr
= i
< scrl
? HISTROW(scrl
- i
) : term
->screen
+ off
;
467 short *_fgs
= i
< scrl
? NULL
: term
->fgs
+ off
;
468 short *_bgs
= i
< scrl
? NULL
: term
->bgs
+ off
;
469 for (j
= 0; j
< pad_cols(); j
++)
470 pad_put(_scr
[j
], i
, j
, _fgs
? _fgs
[j
] : BGCOLOR
,
471 _bgs
? _bgs
[j
] : FGCOLOR
);
475 static void scroll_screen(int sr
, int nr
, int n
)
480 screen_move(OFFSET(sr
+ n
, 0), OFFSET(sr
, 0), nr
* pad_cols());
482 empty_rows(sr
, sr
+ n
);
484 empty_rows(sr
+ nr
+ n
, sr
+ nr
);
485 draw_rows(MIN(sr
, sr
+ n
), MAX(sr
+ nr
, sr
+ nr
+ n
));
489 static void insert_lines(int n
)
491 int sr
= MAX(top
, row
);
492 int nr
= bot
- row
- n
;
494 scroll_screen(sr
, nr
, n
);
497 static void delete_lines(int n
)
499 int r
= MAX(top
, row
);
501 int nr
= bot
- r
- n
;
503 scroll_screen(sr
, nr
, -n
);
506 static int origin(void)
508 return mode
& MODE_ORIGIN
;
511 static void move_cursor(int r
, int c
)
515 t
= origin() ? top
: 0;
516 b
= origin() ? bot
: pad_rows();
517 row
= LIMIT(r
, t
, b
- 1);
518 col
= LIMIT(c
, 0, pad_cols() - 1);
520 mode
= BIT_SET(mode
, MODE_WRAPREADY
, 0);
523 static void set_region(int t
, int b
)
525 top
= LIMIT(t
- 1, 0, pad_rows() - 1);
526 bot
= LIMIT(b
? b
: pad_rows(), top
+ 1, pad_rows());
531 static void setattr(int m
)
552 mode
&= ~ATTR_ITALIC
;
559 fg
= m
> 37 ? FGCOLOR
: m
- 30;
561 bg
= m
> 47 ? BGCOLOR
: m
- 40;
569 static void kill_chars(int sc
, int ec
)
572 for (i
= sc
; i
< ec
; i
++)
573 draw_char(0, row
, i
);
577 static void move_chars(int sc
, int nc
, int n
)
580 screen_move(OFFSET(row
, sc
+ n
), OFFSET(row
, sc
), nc
);
582 screen_reset(OFFSET(row
, sc
), n
);
584 screen_reset(OFFSET(row
, pad_cols() + n
), -n
);
585 draw_cols(row
, MIN(sc
, sc
+ n
), pad_cols());
589 static void delete_chars(int n
)
592 int nc
= pad_cols() - sc
;
593 move_chars(sc
, nc
, -n
);
596 static void insert_chars(int n
)
598 int nc
= pad_cols() - col
- n
;
599 move_chars(col
, nc
, n
);
602 static void advance(int dr
, int dc
, int scrl
)
606 if (dr
&& r
>= bot
&& scrl
) {
608 int nr
= (bot
- top
) + n
;
609 scroll_screen(top
+ -n
, nr
, n
);
611 if (dr
&& r
< top
&& scrl
) {
613 int nr
= (bot
- top
) - n
;
614 scroll_screen(top
, nr
, n
);
616 r
= dr
? LIMIT(r
, top
, bot
- 1) : r
;
617 c
= LIMIT(c
, 0, pad_cols() - 1);
621 static void insertchar(int c
)
623 if (mode
& MODE_WRAPREADY
)
625 if (mode
& MODE_INSERT
)
627 draw_char(c
, row
, col
);
628 if (col
== pad_cols() - 1)
629 mode
= BIT_SET(mode
, MODE_WRAPREADY
, 1);
635 /* partial vt102 implementation */
637 static void escseq(void);
638 static void escseq_cs(void);
639 static void escseq_g0(void);
640 static void escseq_g1(void);
641 static void escseq_g2(void);
642 static void escseq_g3(void);
643 static void csiseq(void);
644 static void csiseq_da(int c
);
645 static void csiseq_dsr(int c
);
646 static void modeseq(int c
, int set
);
648 /* comments taken from: http://www.ivarch.com/programs/termvt102.shtml */
650 static int readutf8(int c
)
656 while (l
< 6 && c
& (0x40 >> l
))
658 result
= (0x3f >> l
) & c
;
660 result
= (result
<< 6) | (readpty() & 0x3f);
664 #define unknown(ctl, c)
666 /* control sequences */
667 static void ctlseq(void)
671 case 0x09: /* HT horizontal tab to next tab stop */
672 advance(0, 8 - col
% 8, 0);
674 case 0x0a: /* LF line feed */
675 case 0x0b: /* VT line feed */
676 case 0x0c: /* FF line feed */
677 advance(1, (mode
& MODE_AUTOCR
) ? -col
: 0, 1);
679 case 0x08: /* BS backspace one column */
682 case 0x1b: /* ESC start escape sequence */
685 case 0x0d: /* CR carriage return */
688 case 0x00: /* NUL ignored */
689 case 0x07: /* BEL beep */
690 case 0x7f: /* DEL ignored */
692 case 0x05: /* ENQ trigger answerback message */
693 case 0x0e: /* SO activate G1 character set & newline */
694 case 0x0f: /* SI activate G0 character set */
695 case 0x11: /* XON resume transmission */
696 case 0x13: /* XOFF stop transmission, ignore characters */
697 case 0x18: /* CAN interrupt escape sequence */
698 case 0x1a: /* SUB interrupt escape sequence */
699 case 0x9b: /* CSI equivalent to ESC [ */
700 unknown("ctlseq", c
);
704 if (isdw(c
) && col
+ 1 == pad_cols() && ~mode
& MODE_WRAPREADY
)
709 insertchar(c
| DWCHAR
);
714 #define ESCM(c) (((c) & 0xf0) == 0x20)
715 #define ESCF(c) ((c) > 0x30 && (c) < 0x7f)
717 /* escape sequences */
718 static void escseq(void)
724 case '[': /* CSI control sequence introducer */
727 case '%': /* CS... escseq_cs table */
730 case '(': /* G0... escseq_g0 table */
733 case ')': /* G1... escseq_g1 table */
736 case '*': /* G2... escseq_g2 table */
739 case '+': /* G3... escseq_g3 table */
742 case '7': /* DECSC save state (position, charset, attributes) */
743 misc_save(&term
->sav
);
745 case '8': /* DECRC restore most recently saved state */
746 misc_load(&term
->sav
);
748 case 'M': /* RI reverse line feed */
751 case 'D': /* IND line feed */
754 case 'E': /* NEL newline */
757 case 'c': /* RIS reset */
760 case 'H': /* HTS set tab stop at current column */
761 case 'Z': /* DECID DEC private ID; return ESC [ ? 6 c (VT102) */
762 case '#': /* DECALN ("#8") DEC alignment test - fill screen with E's */
763 case '>': /* DECPNM set numeric keypad mode */
764 case '=': /* DECPAM set application keypad mode */
765 case 'N': /* SS2 select G2 charset for next char only */
766 case 'O': /* SS3 select G3 charset for next char only */
767 case 'P': /* DCS device control string (ended by ST) */
768 case 'X': /* SOS start of string */
769 case '^': /* PM privacy message (ended by ST) */
770 case '_': /* APC application program command (ended by ST) */
771 case '\\': /* ST string terminator */
772 case 'n': /* LS2 invoke G2 charset */
773 case 'o': /* LS3 invoke G3 charset */
774 case '|': /* LS3R invoke G3 charset as GR */
775 case '}': /* LS2R invoke G2 charset as GR */
776 case '~': /* LS1R invoke G1 charset as GR */
777 case ']': /* OSC operating system command */
778 case 'g': /* BEL alternate BEL */
780 unknown("escseq", c
);
785 static void escseq_cs(void)
789 case '@': /* CSDFL select default charset (ISO646/8859-1) */
790 case 'G': /* CSUTF8 select UTF-8 */
791 case '8': /* CSUTF8 select UTF-8 (obsolete) */
793 unknown("escseq_cs", c
);
798 static void escseq_g0(void)
802 case '8': /* G0DFL G0 charset = default mapping (ISO8859-1) */
803 case '0': /* G0GFX G0 charset = VT100 graphics mapping */
804 case 'U': /* G0ROM G0 charset = null mapping (straight to ROM) */
805 case 'K': /* G0USR G0 charset = user defined mapping */
806 case 'B': /* G0TXT G0 charset = ASCII mapping */
808 unknown("escseq_g0", c
);
813 static void escseq_g1(void)
817 case '8': /* G1DFL G1 charset = default mapping (ISO8859-1) */
818 case '0': /* G1GFX G1 charset = VT100 graphics mapping */
819 case 'U': /* G1ROM G1 charset = null mapping (straight to ROM) */
820 case 'K': /* G1USR G1 charset = user defined mapping */
821 case 'B': /* G1TXT G1 charset = ASCII mapping */
823 unknown("escseq_g1", c
);
828 static void escseq_g2(void)
832 case '8': /* G2DFL G2 charset = default mapping (ISO8859-1) */
833 case '0': /* G2GFX G2 charset = VT100 graphics mapping */
834 case 'U': /* G2ROM G2 charset = null mapping (straight to ROM) */
835 case 'K': /* G2USR G2 charset = user defined mapping */
837 unknown("escseq_g2", c
);
842 static void escseq_g3(void)
846 case '8': /* G3DFL G3 charset = default mapping (ISO8859-1) */
847 case '0': /* G3GFX G3 charset = VT100 graphics mapping */
848 case 'U': /* G3ROM G3 charset = null mapping (straight to ROM) */
849 case 'K': /* G3USR G3 charset = user defined mapping */
851 unknown("escseq_g3", c
);
856 static int absrow(int r
)
858 return origin() ? top
+ r
: r
;
861 #define CSIP(c) (((c) & 0xf0) == 0x30)
862 #define CSII(c) (((c) & 0xf0) == 0x20)
863 #define CSIF(c) ((c) >= 0x40 && (c) < 0x80)
865 #define MAXCSIARGS 32
866 /* ECMA-48 CSI sequences */
867 static void csiseq(void)
869 int args
[MAXCSIARGS
] = {0};
875 if (strchr("<=>?", c
)) {
882 arg
= arg
* 10 + (c
- '0');
893 case 'H': /* CUP move cursor to row, column */
894 case 'f': /* HVP move cursor to row, column */
895 move_cursor(absrow(MAX(0, args
[0] - 1)), MAX(0, args
[1] - 1));
897 case 'J': /* ED erase display */
900 kill_chars(col
, pad_cols());
901 blank_rows(row
+ 1, pad_rows());
904 kill_chars(0, col
+ 1);
905 blank_rows(0, row
- 1);
912 case 'A': /* CUU move cursor up */
913 advance(-MAX(1, args
[0]), 0, 0);
915 case 'e': /* VPR move cursor down */
916 case 'B': /* CUD move cursor down */
917 advance(MAX(1, args
[0]), 0, 0);
919 case 'a': /* HPR move cursor right */
920 case 'C': /* CUF move cursor right */
921 advance(0, MAX(1, args
[0]), 0);
923 case 'D': /* CUB move cursor left */
924 advance(0, -MAX(1, args
[0]), 0);
926 case 'K': /* EL erase line */
929 kill_chars(col
, pad_cols());
932 kill_chars(0, col
+ 1);
935 kill_chars(0, pad_cols());
939 case 'L': /* IL insert blank lines */
940 if (row
>= top
&& row
< bot
)
941 insert_lines(MAX(1, args
[0]));
943 case 'M': /* DL delete lines */
944 if (row
>= top
&& row
< bot
)
945 delete_lines(MAX(1, args
[0]));
947 case 'd': /* VPA move to row (current column) */
948 move_cursor(absrow(MAX(1, args
[0]) - 1), col
);
950 case 'm': /* SGR set graphic rendition */
953 for (i
= 0; i
< n
; i
++) {
967 case 'r': /* DECSTBM set scrolling region to (top, bottom) rows */
968 set_region(args
[0], args
[1]);
970 case 'c': /* DA return ESC [ ? 6 c (VT102) */
971 csiseq_da(priv
== '?' ? args
[0] | 0x80 : args
[0]);
973 case 'h': /* SM set mode */
974 for (i
= 0; i
< n
; i
++)
975 modeseq(priv
== '?' ? args
[i
] | 0x80 : args
[i
], 1);
977 case 'l': /* RM reset mode */
978 for (i
= 0; i
< n
; i
++)
979 modeseq(priv
== '?' ? args
[i
] | 0x80 : args
[i
], 0);
981 case 'P': /* DCH delete characters on current line */
982 delete_chars(LIMIT(args
[0], 1, pad_cols() - col
));
984 case '@': /* ICH insert blank characters */
985 insert_chars(LIMIT(args
[0], 1, pad_cols() - col
));
987 case 'n': /* DSR device status report */
990 case 'G': /* CHA move cursor to column in current row */
991 advance(0, MAX(0, args
[0] - 1) - col
, 0);
993 case 'X': /* ECH erase characters on current line */
994 kill_chars(col
, MIN(col
+ MAX(1, args
[0]), pad_cols()));
996 case '[': /* IGN ignored control sequence */
997 case 'E': /* CNL move cursor down and to column 1 */
998 case 'F': /* CPL move cursor up and to column 1 */
999 case 'g': /* TBC clear tab stop (CSI 3 g = clear all stops) */
1000 case 'q': /* DECLL set keyboard LEDs */
1001 case 's': /* CUPSV save cursor position */
1002 case 'u': /* CUPRS restore cursor position */
1003 case '`': /* HPA move cursor to column in current row */
1005 unknown("csiseq", c
);
1010 static void csiseq_da(int c
)
1014 term_sendstr("\x1b[?6c");
1017 /* we don't care much about cursor shape */
1018 /* printf("csiseq_da <0x%x>\n", c); */
1023 static void csiseq_dsr(int c
)
1025 char status
[1 << 5];
1028 term_sendstr("\x1b[0n");
1031 sprintf(status
, "\x1b[%d;%dR",
1032 (origin() ? row
- top
: row
) + 1, col
+ 1);
1033 term_sendstr(status
);
1036 unknown("csiseq_dsr", c
);
1041 /* ANSI/DEC specified modes for SM/RM ANSI Specified Modes */
1042 static void modeseq(int c
, int set
)
1045 case 0x87: /* DECAWM Auto Wrap */
1046 mode
= BIT_SET(mode
, MODE_WRAP
, set
);
1048 case 0x99: /* DECTCEM Cursor on (set); Cursor off (reset) */
1049 mode
= BIT_SET(mode
, MODE_CURSOR
, set
);
1051 case 0x86: /* DECOM Sets relative coordinates (set); Sets absolute coordinates (reset) */
1052 mode
= BIT_SET(mode
, MODE_ORIGIN
, set
);
1054 case 0x14: /* LNM Line Feed / New Line Mode */
1055 mode
= BIT_SET(mode
, MODE_AUTOCR
, set
);
1057 case 0x04: /* IRM insertion/replacement mode (always reset) */
1058 mode
= BIT_SET(mode
, MODE_INSERT
, set
);
1060 case 0x00: /* IGN Error (Ignored) */
1061 case 0x01: /* GATM guarded-area transfer mode (ignored) */
1062 case 0x02: /* KAM keyboard action mode (always reset) */
1063 case 0x03: /* CRM control representation mode (always reset) */
1064 case 0x05: /* SRTM status-reporting transfer mode */
1065 case 0x06: /* ERM erasure mode (always set) */
1066 case 0x07: /* VEM vertical editing mode (ignored) */
1067 case 0x0a: /* HEM horizontal editing mode */
1068 case 0x0b: /* PUM positioning unit mode */
1069 case 0x0c: /* SRM send/receive mode (echo on/off) */
1070 case 0x0d: /* FEAM format effector action mode */
1071 case 0x0e: /* FETM format effector transfer mode */
1072 case 0x0f: /* MATM multiple area transfer mode */
1073 case 0x10: /* TTM transfer termination mode */
1074 case 0x11: /* SATM selected area transfer mode */
1075 case 0x12: /* TSM tabulation stop mode */
1076 case 0x13: /* EBM editing boundary mode */
1077 /* DEC Private Modes: "?NUM" -> (NUM | 0x80) */
1078 case 0x80: /* IGN Error (Ignored) */
1079 case 0x81: /* DECCKM Cursorkeys application (set); Cursorkeys normal (reset) */
1080 case 0x82: /* DECANM ANSI (set); VT52 (reset) */
1081 case 0x83: /* DECCOLM 132 columns (set); 80 columns (reset) */
1082 case 0x84: /* DECSCLM Jump scroll (set); Smooth scroll (reset) */
1083 case 0x85: /* DECSCNM Reverse screen (set); Normal screen (reset) */
1084 case 0x88: /* DECARM Auto Repeat */
1085 case 0x89: /* DECINLM Interlace */
1086 case 0x92: /* DECPFF Send FF to printer after print screen (set); No char after PS (reset) */
1087 case 0x93: /* DECPEX Print screen: prints full screen (set); prints scroll region (reset) */
1089 unknown("modeseq", c
);