msdos.c 117 KB
Newer Older
1
/* MS-DOS specific C utilities.          -*- coding: raw-text -*-
2

3
Copyright (C) 1993-1997, 1999-2012  Free Software Foundation, Inc.
Richard M. Stallman's avatar
Richard M. Stallman committed
4 5 6

This file is part of GNU Emacs.

7
GNU Emacs is free software: you can redistribute it and/or modify
Richard M. Stallman's avatar
Richard M. Stallman committed
8
it under the terms of the GNU General Public License as published by
9 10
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Richard M. Stallman's avatar
Richard M. Stallman committed
11 12 13 14 15 16 17

GNU Emacs is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
18
along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
Richard M. Stallman's avatar
Richard M. Stallman committed
19

20
/* Contributed by Morten Welinder */
Kim F. Storm's avatar
Kim F. Storm committed
21
/* New display, keyboard, and mouse control by Kim F. Storm */
22

Richard M. Stallman's avatar
Richard M. Stallman committed
23 24
/* Note: some of the stuff here was taken from end of sysdep.c in demacs. */

Richard M. Stallman's avatar
Richard M. Stallman committed
25
#include <config.h>
Richard M. Stallman's avatar
Richard M. Stallman committed
26 27

#ifdef MSDOS
28
#include <setjmp.h>
Richard M. Stallman's avatar
Richard M. Stallman committed
29 30
#include "lisp.h"
#include <stdio.h>
31
#include <time.h>
Richard M. Stallman's avatar
Richard M. Stallman committed
32 33
#include <sys/param.h>
#include <sys/time.h>
Paul Eggert's avatar
Paul Eggert committed
34
/* gettime and settime in dos.h clash with their namesakes from
35 36 37
   gnulib, so we move out of our way the prototypes in dos.h.  */
#define gettime dos_h_gettime_
#define settime dos_h_settime_
Richard M. Stallman's avatar
Richard M. Stallman committed
38
#include <dos.h>
39 40
#undef gettime
#undef settime
41 42
#include <errno.h>
#include <sys/stat.h>    /* for _fixpath */
43
#include <unistd.h>	 /* for chdir, dup, dup2, etc. */
44
#include <dir.h>	 /* for getdisk */
45
#pragma pack(0)		 /* dir.h does a pack(4), which isn't GCC's default */
46
#include <fcntl.h>
47
#include <io.h>		 /* for setmode */
48 49
#include <dpmi.h>	 /* for __dpmi_xxx stuff */
#include <sys/farptr.h>	 /* for _farsetsel, _farnspokeb */
50
#include <libc/dosio.h>  /* for _USE_LFN */
51
#include <conio.h>	 /* for cputs */
52

Richard M. Stallman's avatar
Richard M. Stallman committed
53 54
#include "msdos.h"
#include "systime.h"
55
#include "frame.h"
Richard M. Stallman's avatar
Richard M. Stallman committed
56
#include "termhooks.h"
57
#include "termchar.h"
Morten Welinder's avatar
Morten Welinder committed
58
#include "dispextern.h"
59
#include "dosfns.h"
Morten Welinder's avatar
Morten Welinder committed
60
#include "termopts.h"
61
#include "character.h"
62 63
#include "coding.h"
#include "disptab.h"
Morten Welinder's avatar
Morten Welinder committed
64
#include "window.h"
65 66
#include "buffer.h"
#include "commands.h"
67
#include "blockinput.h"
Eli Zaretskii's avatar
Eli Zaretskii committed
68
#include "keyboard.h"
Kenichi Handa's avatar
Kenichi Handa committed
69
#include "intervals.h"
Richard M. Stallman's avatar
Richard M. Stallman committed
70 71 72 73
#include <go32.h>
#include <pc.h>
#include <ctype.h>
/* #include <process.h> */
74 75
/* Damn that local process.h!  Instead we can define P_WAIT and
   spawnve ourselves.  */
Richard M. Stallman's avatar
Richard M. Stallman committed
76
#define P_WAIT 1
77
extern int spawnve (int, const char *, char *const [], char *const []);
Richard M. Stallman's avatar
Richard M. Stallman committed
78

79 80 81 82
#ifndef _USE_LFN
#define _USE_LFN 0
#endif

83 84 85 86
#ifndef _dos_ds
#define _dos_ds _go32_info_block.selector_for_linear_memory
#endif

Richard M. Stallman's avatar
Richard M. Stallman committed
87
#include <signal.h>
88
#include "syssignal.h"
Richard M. Stallman's avatar
Richard M. Stallman committed
89

90 91 92
#include "careadlinkat.h"
#include "allocator.h"

93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110
#ifndef SYSTEM_MALLOC

#ifdef GNU_MALLOC

/* If other `malloc' than ours is used, force our `sbrk' behave like
   Unix programs expect (resize memory blocks to keep them contiguous).
   If `sbrk' from `ralloc.c' is NOT used, also zero-out sbrk'ed memory,
   because that's what `gmalloc' expects to get.  */
#include <crt0.h>

#ifdef REL_ALLOC
int _crt0_startup_flags = _CRT0_FLAG_UNIX_SBRK;
#else  /* not REL_ALLOC */
int _crt0_startup_flags = (_CRT0_FLAG_UNIX_SBRK | _CRT0_FLAG_FILL_SBRK_MEMORY);
#endif /* not REL_ALLOC */
#endif /* GNU_MALLOC */

#endif /* not SYSTEM_MALLOC */
111

112
/* Return the current timestamp in milliseconds since midnight.  */
113
static unsigned long
114
event_timestamp (void)
115
{
116
  struct timespec t;
117
  unsigned long s;
Eli Zaretskii's avatar
Eli Zaretskii committed
118

119
  gettime (&t);
120 121
  s = t.tv_sec;
  s %= 86400;
122
  s *= 1000;
123
  s += t.tv_nsec * 1000000;
Eli Zaretskii's avatar
Eli Zaretskii committed
124

125 126 127
  return s;
}

Kim F. Storm's avatar
Kim F. Storm committed
128 129 130 131 132 133

/* ------------------------ Mouse control ---------------------------
 *
 * Coordinates are in screen positions and zero based.
 * Mouse buttons are numbered from left to right and also zero based.
 */
Richard M. Stallman's avatar
Richard M. Stallman committed
134

Eli Zaretskii's avatar
Eli Zaretskii committed
135 136 137 138
/* This used to be in termhooks.h, but mainstream Emacs code no longer
   uses it, and it was removed...  */
#define NUM_MOUSE_BUTTONS (5)

Kim F. Storm's avatar
Kim F. Storm committed
139 140
int have_mouse;          /* 0: no, 1: enabled, -1: disabled */
static int mouse_visible;
Richard M. Stallman's avatar
Richard M. Stallman committed
141

Kim F. Storm's avatar
Kim F. Storm committed
142 143
static int mouse_last_x;
static int mouse_last_y;
Richard M. Stallman's avatar
Richard M. Stallman committed
144

Kim F. Storm's avatar
Kim F. Storm committed
145 146
static int mouse_button_translate[NUM_MOUSE_BUTTONS];
static int mouse_button_count;
Richard M. Stallman's avatar
Richard M. Stallman committed
147

Kim F. Storm's avatar
Kim F. Storm committed
148
void
149
mouse_on (void)
Richard M. Stallman's avatar
Richard M. Stallman committed
150 151 152
{
  union REGS regs;

Kim F. Storm's avatar
Kim F. Storm committed
153
  if (have_mouse > 0 && !mouse_visible)
Richard M. Stallman's avatar
Richard M. Stallman committed
154
    {
155 156 157 158
      struct tty_display_info *tty = CURTTY ();

      if (tty->termscript)
	fprintf (tty->termscript, "<M_ON>");
Kim F. Storm's avatar
Kim F. Storm committed
159 160 161
      regs.x.ax = 0x0001;
      int86 (0x33, &regs, &regs);
      mouse_visible = 1;
Richard M. Stallman's avatar
Richard M. Stallman committed
162 163 164
    }
}

Kim F. Storm's avatar
Kim F. Storm committed
165
void
166
mouse_off (void)
Richard M. Stallman's avatar
Richard M. Stallman committed
167
{
Kim F. Storm's avatar
Kim F. Storm committed
168
  union REGS regs;
Richard M. Stallman's avatar
Richard M. Stallman committed
169

Kim F. Storm's avatar
Kim F. Storm committed
170
  if (have_mouse > 0 && mouse_visible)
Richard M. Stallman's avatar
Richard M. Stallman committed
171
    {
172 173 174 175
      struct tty_display_info *tty = CURTTY ();

      if (tty->termscript)
	fprintf (tty->termscript, "<M_OFF>");
Kim F. Storm's avatar
Kim F. Storm committed
176 177 178
      regs.x.ax = 0x0002;
      int86 (0x33, &regs, &regs);
      mouse_visible = 0;
Richard M. Stallman's avatar
Richard M. Stallman committed
179 180 181
    }
}

182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201
static void
mouse_setup_buttons (int n_buttons)
{
  if (n_buttons == 3)
    {
      mouse_button_count = 3;
      mouse_button_translate[0] = 0; /* Left */
      mouse_button_translate[1] = 2; /* Middle */
      mouse_button_translate[2] = 1; /* Right */
    }
  else	/* two, what else? */
    {
      mouse_button_count = 2;
      mouse_button_translate[0] = 0;
      mouse_button_translate[1] = 1;
    }
}

DEFUN ("msdos-set-mouse-buttons", Fmsdos_set_mouse_buttons, Smsdos_set_mouse_buttons,
       1, 1, "NSet number of mouse buttons to: ",
202 203 204 205
       doc: /* Set the number of mouse buttons to use by Emacs.
This is useful with mice that report the number of buttons inconsistently,
e.g., if the number of buttons is reported as 3, but Emacs only sees 2 of
them.  This happens with wheeled mice on Windows 9X, for example.  */)
Dan Nicolaescu's avatar
Dan Nicolaescu committed
206
  (Lisp_Object nbuttons)
207
{
208 209
  int n;

210
  CHECK_NUMBER (nbuttons);
211 212
  n = XINT (nbuttons);
  if (n < 2 || n > 3)
213 214 215
    xsignal2 (Qargs_out_of_range,
	      build_string ("only 2 or 3 mouse buttons are supported"),
	      nbuttons);
216
  mouse_setup_buttons (n);
217 218 219
  return Qnil;
}

220 221 222 223 224 225 226 227 228 229 230
static void
mouse_get_xy (int *x, int *y)
{
  union REGS regs;

  regs.x.ax = 0x0003;
  int86 (0x33, &regs, &regs);
  *x = regs.x.cx / 8;
  *y = regs.x.dx / 8;
}

Kim F. Storm's avatar
Kim F. Storm committed
231
void
232
mouse_moveto (int x, int y)
Richard M. Stallman's avatar
Richard M. Stallman committed
233
{
Kim F. Storm's avatar
Kim F. Storm committed
234
  union REGS regs;
235
  struct tty_display_info *tty = CURTTY ();
Richard M. Stallman's avatar
Richard M. Stallman committed
236

237 238
  if (tty->termscript)
    fprintf (tty->termscript, "<M_XY=%dx%d>", x, y);
Kim F. Storm's avatar
Kim F. Storm committed
239 240 241 242
  regs.x.ax = 0x0004;
  mouse_last_x = regs.x.cx = x * 8;
  mouse_last_y = regs.x.dx = y * 8;
  int86 (0x33, &regs, &regs);
Richard M. Stallman's avatar
Richard M. Stallman committed
243 244
}

Kim F. Storm's avatar
Kim F. Storm committed
245
static int
246
mouse_pressed (int b, int *xp, int *yp)
Richard M. Stallman's avatar
Richard M. Stallman committed
247
{
Kim F. Storm's avatar
Kim F. Storm committed
248
  union REGS regs;
Richard M. Stallman's avatar
Richard M. Stallman committed
249

Kim F. Storm's avatar
Kim F. Storm committed
250 251 252 253 254 255 256 257
  if (b >= mouse_button_count)
    return 0;
  regs.x.ax = 0x0005;
  regs.x.bx = mouse_button_translate[b];
  int86 (0x33, &regs, &regs);
  if (regs.x.bx)
    *xp = regs.x.cx / 8, *yp = regs.x.dx / 8;
  return (regs.x.bx != 0);
Richard M. Stallman's avatar
Richard M. Stallman committed
258 259
}

Kim F. Storm's avatar
Kim F. Storm committed
260
static int
261
mouse_released (int b, int *xp, int *yp)
Richard M. Stallman's avatar
Richard M. Stallman committed
262 263 264
{
  union REGS regs;

Kim F. Storm's avatar
Kim F. Storm committed
265 266 267 268 269 270 271 272
  if (b >= mouse_button_count)
    return 0;
  regs.x.ax = 0x0006;
  regs.x.bx = mouse_button_translate[b];
  int86 (0x33, &regs, &regs);
  if (regs.x.bx)
    *xp = regs.x.cx / 8, *yp = regs.x.dx / 8;
  return (regs.x.bx != 0);
Richard M. Stallman's avatar
Richard M. Stallman committed
273 274
}

275
static int
276
mouse_button_depressed (int b, int *xp, int *yp)
277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292
{
  union REGS regs;

  if (b >= mouse_button_count)
    return 0;
  regs.x.ax = 0x0003;
  int86 (0x33, &regs, &regs);
  if ((regs.x.bx & (1 << mouse_button_translate[b])) != 0)
    {
      *xp = regs.x.cx / 8;
      *yp = regs.x.dx / 8;
      return 1;
    }
  return 0;
}

Kim F. Storm's avatar
Kim F. Storm committed
293
void
294 295
mouse_get_pos (FRAME_PTR *f, int insist, Lisp_Object *bar_window,
	       enum scroll_bar_part *part, Lisp_Object *x, Lisp_Object *y,
296
	       Time *time)
Kim F. Storm's avatar
Kim F. Storm committed
297 298
{
  int ix, iy;
299 300 301 302 303
  Lisp_Object frame, tail;

  /* Clear the mouse-moved flag for every frame on this display.  */
  FOR_EACH_FRAME (tail, frame)
    XFRAME (frame)->mouse_moved = 0;
Kim F. Storm's avatar
Kim F. Storm committed
304

Juanma Barranquero's avatar
Juanma Barranquero committed
305
  *f = SELECTED_FRAME ();
Kim F. Storm's avatar
Kim F. Storm committed
306 307 308
  *bar_window = Qnil;
  mouse_get_xy (&ix, &iy);
  *time = event_timestamp ();
309 310
  *x = make_number (mouse_last_x = ix);
  *y = make_number (mouse_last_y = iy);
Kim F. Storm's avatar
Kim F. Storm committed
311
}
Richard M. Stallman's avatar
Richard M. Stallman committed
312

Kim F. Storm's avatar
Kim F. Storm committed
313
static void
314
mouse_check_moved (void)
Richard M. Stallman's avatar
Richard M. Stallman committed
315
{
316
  int x, y;
Richard M. Stallman's avatar
Richard M. Stallman committed
317

Kim F. Storm's avatar
Kim F. Storm committed
318
  mouse_get_xy (&x, &y);
Juanma Barranquero's avatar
Juanma Barranquero committed
319
  SELECTED_FRAME ()->mouse_moved |= (x != mouse_last_x || y != mouse_last_y);
Kim F. Storm's avatar
Kim F. Storm committed
320 321 322
  mouse_last_x = x;
  mouse_last_y = y;
}
Richard M. Stallman's avatar
Richard M. Stallman committed
323

Eli Zaretskii's avatar
Eli Zaretskii committed
324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339
/* Force the mouse driver to ``forget'' about any button clicks until
   now.  */
static void
mouse_clear_clicks (void)
{
  int b;

  for (b = 0; b < mouse_button_count; b++)
    {
      int dummy_x, dummy_y;

      (void) mouse_pressed (b, &dummy_x, &dummy_y);
      (void) mouse_released (b, &dummy_x, &dummy_y);
    }
}

Kim F. Storm's avatar
Kim F. Storm committed
340
void
341
mouse_init (void)
Kim F. Storm's avatar
Kim F. Storm committed
342 343
{
  union REGS regs;
344
  struct tty_display_info *tty = CURTTY ();
345

346 347
  if (tty->termscript)
    fprintf (tty->termscript, "<M_INIT>");
Richard M. Stallman's avatar
Richard M. Stallman committed
348

Kim F. Storm's avatar
Kim F. Storm committed
349 350
  regs.x.ax = 0x0021;
  int86 (0x33, &regs, &regs);
351

352 353 354 355
  /* Reset the mouse last press/release info.  It seems that Windows
     doesn't do that automatically when function 21h is called, which
     causes Emacs to ``remember'' the click that switched focus to the
     window just before Emacs was started from that window.  */
Eli Zaretskii's avatar
Eli Zaretskii committed
356
  mouse_clear_clicks ();
357

Kim F. Storm's avatar
Kim F. Storm committed
358 359 360 361
  regs.x.ax = 0x0007;
  regs.x.cx = 0;
  regs.x.dx = 8 * (ScreenCols () - 1);
  int86 (0x33, &regs, &regs);
Richard M. Stallman's avatar
Richard M. Stallman committed
362

Kim F. Storm's avatar
Kim F. Storm committed
363 364 365 366
  regs.x.ax = 0x0008;
  regs.x.cx = 0;
  regs.x.dx = 8 * (ScreenRows () - 1);
  int86 (0x33, &regs, &regs);
Richard M. Stallman's avatar
Richard M. Stallman committed
367

Kim F. Storm's avatar
Kim F. Storm committed
368 369 370
  mouse_moveto (0, 0);
  mouse_visible = 0;
}
Richard M. Stallman's avatar
Richard M. Stallman committed
371

Kim F. Storm's avatar
Kim F. Storm committed
372 373 374
/* ------------------------- Screen control ----------------------
 *
 */
375

Kim F. Storm's avatar
Kim F. Storm committed
376
static int internal_terminal = 0;
377

Kim F. Storm's avatar
Kim F. Storm committed
378 379 380
#ifndef HAVE_X_WINDOWS
extern unsigned char ScreenAttrib;
static int screen_face;
381

Kim F. Storm's avatar
Kim F. Storm committed
382 383 384
static int screen_size_X;
static int screen_size_Y;
static int screen_size;
Richard M. Stallman's avatar
Richard M. Stallman committed
385

Kim F. Storm's avatar
Kim F. Storm committed
386 387 388 389
static int current_pos_X;
static int current_pos_Y;
static int new_pos_X;
static int new_pos_Y;
Richard M. Stallman's avatar
Richard M. Stallman committed
390

Kim F. Storm's avatar
Kim F. Storm committed
391 392 393 394 395
static void *startup_screen_buffer;
static int startup_screen_size_X;
static int startup_screen_size_Y;
static int startup_pos_X;
static int startup_pos_Y;
396
static unsigned char startup_screen_attrib;
Richard M. Stallman's avatar
Richard M. Stallman committed
397

398 399
static clock_t startup_time;

Kim F. Storm's avatar
Kim F. Storm committed
400
static int term_setup_done;
Richard M. Stallman's avatar
Richard M. Stallman committed
401

402 403
static unsigned short outside_cursor;

Kim F. Storm's avatar
Kim F. Storm committed
404
/* Similar to the_only_frame.  */
405
struct tty_display_info the_only_display_info;
Richard M. Stallman's avatar
Richard M. Stallman committed
406

407 408 409 410 411 412 413 414
/* Support for DOS/V (allows Japanese characters to be displayed on
   standard, non-Japanese, ATs).  Only supported for DJGPP v2 and later.  */

/* Holds the address of the text-mode screen buffer.  */
static unsigned long screen_old_address = 0;
/* Segment and offset of the virtual screen.  If 0, DOS/V is NOT loaded.  */
static unsigned short screen_virtual_segment = 0;
static unsigned short screen_virtual_offset = 0;
Kenichi Handa's avatar
Kenichi Handa committed
415 416
extern Lisp_Object Qcursor_type;
extern Lisp_Object Qbar, Qhbar;
417

Juanma Barranquero's avatar
Juanma Barranquero committed
418
/* The screen colors of the current frame, which serve as the default
419 420 421
   colors for newly-created frames.  */
static int initial_screen_colors[2];

422 423 424 425 426 427 428
/* Update the screen from a part of relocated DOS/V screen buffer which
   begins at OFFSET and includes COUNT characters.  */
static void
dosv_refresh_virtual_screen (int offset, int count)
{
  __dpmi_regs regs;

429
  if (offset < 0 || count < 0)	/* paranoia; invalid values crash DOS/V */
430 431
    return;

432 433 434 435 436 437 438
  regs.h.ah = 0xff;	/* update relocated screen */
  regs.x.es = screen_virtual_segment;
  regs.x.di = screen_virtual_offset + offset;
  regs.x.cx = count;
  __dpmi_int (0x10, &regs);
}

439
static void
440
dos_direct_output (int y, int x, char *buf, int len)
Richard M. Stallman's avatar
Richard M. Stallman committed
441
{
442 443
  int t0 = 2 * (x + y * screen_size_X);
  int t = t0 + (int) ScreenPrimary;
444
  int l0 = len;
445 446 447 448

  /* This is faster.  */
  for (_farsetsel (_dos_ds); --len >= 0; t += 2, buf++)
    _farnspokeb (t, *buf);
449 450 451

  if (screen_virtual_segment)
    dosv_refresh_virtual_screen (t0, l0);
Kim F. Storm's avatar
Kim F. Storm committed
452 453 454 455 456
}
#endif

#ifndef HAVE_X_WINDOWS

457 458
static int blink_bit = -1;	/* the state of the blink bit at startup */

459 460 461 462 463 464
/* Enable bright background colors.  */
static void
bright_bg (void)
{
  union REGS regs;

465 466 467 468 469
  /* Remember the original state of the blink/bright-background bit.
     It is stored at 0040:0065h in the BIOS data area.  */
  if (blink_bit == -1)
    blink_bit = (_farpeekb (_dos_ds, 0x465) & 0x20) == 0x20;

470 471 472 473 474
  regs.h.bl = 0;
  regs.x.ax = 0x1003;
  int86 (0x10, &regs, &regs);
}

475 476 477 478 479 480 481 482 483 484 485 486 487 488 489
/* Disable bright background colors (and enable blinking) if we found
   the video system in that state at startup.  */
static void
maybe_enable_blinking (void)
{
  if (blink_bit == 1)
    {
      union REGS regs;

      regs.h.bl = 1;
      regs.x.ax = 0x1003;
      int86 (0x10, &regs, &regs);
    }
}

490 491 492 493 494 495 496 497 498 499 500 501 502
/* Return non-zero if the system has a VGA adapter.  */
static int
vga_installed (void)
{
  union REGS regs;

  regs.x.ax = 0x1a00;
  int86 (0x10, &regs, &regs);
  if (regs.h.al == 0x1a && regs.h.bl > 5 && regs.h.bl < 13)
    return 1;
  return 0;
}

503 504
/* Set the screen dimensions so that it can show no less than
   ROWS x COLS frame.  */
505

506
void
507
dos_set_window_size (int *rows, int *cols)
508 509 510
{
  char video_name[30];
  union REGS regs;
Eli Zaretskii's avatar
Eli Zaretskii committed
511 512
  Lisp_Object video_mode;
  int video_mode_value, have_vga = 0;
513 514 515 516 517 518
  int current_rows = ScreenRows (), current_cols = ScreenCols ();

  if (*rows == current_rows && *cols == current_cols)
    return;

  mouse_off ();
519
  have_vga = vga_installed ();
520

521
  /* If the user specified a special video mode for these dimensions,
522
     use that mode.  */
Paul Eggert's avatar
Paul Eggert committed
523 524
  video_mode
    = Fsymbol_value (Fintern_soft (make_formatted_string
525 526
				   (video_name, "screen-dimensions-%dx%d",
				    *rows, *cols), Qnil));
527 528 529 530 531 532

  if (INTEGERP (video_mode)
      && (video_mode_value = XINT (video_mode)) > 0)
    {
      regs.x.ax = video_mode_value;
      int86 (0x10, &regs, &regs);
533 534 535 536 537 538 539 540 541

      if (have_mouse)
	{
	  /* Must hardware-reset the mouse, or else it won't update
	     its notion of screen dimensions for some non-standard
	     video modes.  This is *painfully* slow...  */
	  regs.x.ax = 0;
	  int86 (0x33, &regs, &regs);
	}
542 543 544 545 546 547 548
    }

  /* Find one of the dimensions supported by standard EGA/VGA
     which gives us at least the required dimensions.  */
  else
    {
      static struct {
Eli Zaretskii's avatar
Eli Zaretskii committed
549
	int rows, need_vga;
550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566
      }	std_dimension[] = {
	  {25, 0},
	  {28, 1},
	  {35, 0},
	  {40, 1},
	  {43, 0},
	  {50, 1}
      };
      int i = 0;

      while (i < sizeof (std_dimension) / sizeof (std_dimension[0]))
	{
	 if (std_dimension[i].need_vga <= have_vga
	     && std_dimension[i].rows >= *rows)
	   {
	     if (std_dimension[i].rows != current_rows
		 || *cols != current_cols)
567
	       _set_screen_lines (std_dimension[i].rows);
568 569
	     break;
	   }
570
	 i++;
571 572 573 574 575 576 577 578 579 580 581 582 583
	}
    }


  if (have_mouse)
    {
      mouse_init ();
      mouse_on ();
    }

  /* Tell the caller what dimensions have been REALLY set.  */
  *rows = ScreenRows ();
  *cols = ScreenCols ();
584

585 586 587 588 589
  /* Update Emacs' notion of screen dimensions.  */
  screen_size_X = *cols;
  screen_size_Y = *rows;
  screen_size = *cols * *rows;

590 591 592
  /* If the dimensions changed, the mouse highlight info is invalid.  */
  if (current_rows != *rows || current_cols != *cols)
    {
Juanma Barranquero's avatar
Juanma Barranquero committed
593
      struct frame *f = SELECTED_FRAME ();
594 595
      Mouse_HLInfo *hlinfo = MOUSE_HL_INFO (f);
      Lisp_Object window = hlinfo->mouse_face_window;
596

597
      if (! NILP (window) && XFRAME (XWINDOW (window)->frame) == f)
598
	{
599 600 601
	  hlinfo->mouse_face_beg_row = hlinfo->mouse_face_beg_col = -1;
	  hlinfo->mouse_face_end_row = hlinfo->mouse_face_end_col = -1;
	  hlinfo->mouse_face_window = Qnil;
602 603 604
	}
    }

605 606
  /* Enable bright background colors.  */
  bright_bg ();
607 608 609 610 611

  /* FIXME: I'm not sure the above will run at all on DOS/V.  But let's
     be defensive anyway.  */
  if (screen_virtual_segment)
    dosv_refresh_virtual_screen (0, *cols * *rows);
612 613
}

614 615
/* If we write a character in the position where the mouse is,
   the mouse cursor may need to be refreshed.  */
616 617

static void
618
mouse_off_maybe (void)
619
{
Kim F. Storm's avatar
Kim F. Storm committed
620
  int x, y;
Eli Zaretskii's avatar
Eli Zaretskii committed
621

Kim F. Storm's avatar
Kim F. Storm committed
622 623
  if (!mouse_visible)
    return;
Eli Zaretskii's avatar
Eli Zaretskii committed
624

Kim F. Storm's avatar
Kim F. Storm committed
625 626 627
  mouse_get_xy (&x, &y);
  if (y != new_pos_Y || x < new_pos_X)
    return;
Eli Zaretskii's avatar
Eli Zaretskii committed
628

Kim F. Storm's avatar
Kim F. Storm committed
629 630 631
  mouse_off ();
}

632 633 634 635 636 637 638 639 640 641 642 643 644
#define DEFAULT_CURSOR_START (-1)
#define DEFAULT_CURSOR_WIDTH (-1)
#define BOX_CURSOR_WIDTH     (-32)

/* Set cursor to begin at scan line START_LINE in the character cell
   and extend for WIDTH scan lines.  Scan lines are counted from top
   of the character cell, starting from zero.  */
static void
msdos_set_cursor_shape (struct frame *f, int start_line, int width)
{
  unsigned desired_cursor;
  __dpmi_regs regs;
  int max_line, top_line, bot_line;
645
  struct tty_display_info *tty = FRAME_TTY (f);
646 647 648 649

  /* Avoid the costly BIOS call if F isn't the currently selected
     frame.  Allow for NULL as unconditionally meaning the selected
     frame.  */
Juanma Barranquero's avatar
Juanma Barranquero committed
650
  if (f && f != SELECTED_FRAME ())
651 652
    return;

653 654
  if (tty->termscript)
    fprintf (tty->termscript, "\nCURSOR SHAPE=(%d,%d)", start_line, width);
655

656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722
  /* The character cell size in scan lines is stored at 40:85 in the
     BIOS data area.  */
  max_line = _farpeekw (_dos_ds, 0x485) - 1;
  switch (max_line)
    {
      default:	/* this relies on CGA cursor emulation being ON! */
      case 7:
	bot_line = 7;
	break;
      case 9:
	bot_line = 9;
	break;
      case 13:
	bot_line = 12;
	break;
      case 15:
	bot_line = 14;
	break;
    }

  if (width < 0)
    {
      if (width == BOX_CURSOR_WIDTH)
	{
	  top_line = 0;
	  bot_line = max_line;
	}
      else if (start_line != DEFAULT_CURSOR_START)
	{
	  top_line = start_line;
	  bot_line = top_line - width - 1;
	}
      else if (width != DEFAULT_CURSOR_WIDTH)
	{
	  top_line = 0;
	  bot_line = -1 - width;
	}
      else
	top_line = bot_line + 1;
    }
  else if (width == 0)
    {
      /* [31, 0] seems to DTRT for all screen sizes.  */
      top_line = 31;
      bot_line = 0;
    }
  else	/* WIDTH is positive */
    {
      if (start_line != DEFAULT_CURSOR_START)
	bot_line = start_line;
      top_line = bot_line - (width - 1);
    }

  /* If the current cursor shape is already what they want, we are
     history here.  */
  desired_cursor = ((top_line & 0x1f) << 8) | (bot_line & 0x1f);
  if (desired_cursor == _farpeekw (_dos_ds, 0x460))
    return;

  regs.h.ah = 1;
  regs.x.cx = desired_cursor;
  __dpmi_int (0x10, &regs);
}

static void
IT_set_cursor_type (struct frame *f, Lisp_Object cursor_type)
{
Eli Zaretskii's avatar
Eli Zaretskii committed
723
  if (EQ (cursor_type, Qbar) || EQ (cursor_type, Qhbar))
724 725 726 727
    {
      /* Just BAR means the normal EGA/VGA cursor.  */
      msdos_set_cursor_shape (f, DEFAULT_CURSOR_START, DEFAULT_CURSOR_WIDTH);
    }
Eli Zaretskii's avatar
Eli Zaretskii committed
728 729 730
  else if (CONSP (cursor_type)
	   && (EQ (XCAR (cursor_type), Qbar)
	       || EQ (XCAR (cursor_type), Qhbar)))
731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753
    {
      Lisp_Object bar_parms = XCDR (cursor_type);
      int width;

      if (INTEGERP (bar_parms))
	{
	  /* Feature: negative WIDTH means cursor at the top
	     of the character cell, zero means invisible cursor.  */
	  width = XINT (bar_parms);
	  msdos_set_cursor_shape (f, width >= 0 ? DEFAULT_CURSOR_START : 0,
				  width);
	}
      else if (CONSP (bar_parms)
	       && INTEGERP (XCAR (bar_parms))
	       && INTEGERP (XCDR (bar_parms)))
	{
	  int start_line = XINT (XCDR (bar_parms));

	  width = XINT (XCAR (bar_parms));
	  msdos_set_cursor_shape (f, start_line, width);
	}
    }
  else
754 755 756 757 758 759
    {
      /* Treat anything unknown as "box cursor".  This includes nil, so
	 that a frame which doesn't specify a cursor type gets a box,
	 which is the default in Emacs.  */
      msdos_set_cursor_shape (f, 0, BOX_CURSOR_WIDTH);
    }
760 761
}

762
static void
763
IT_ring_bell (struct frame *f)
Kim F. Storm's avatar
Kim F. Storm committed
764 765
{
  if (visible_bell)
766
    {
Kim F. Storm's avatar
Kim F. Storm committed
767 768
      mouse_off ();
      ScreenVisualBell ();
769
    }
Kim F. Storm's avatar
Kim F. Storm committed
770
  else
771 772 773 774 775 776
    {
      union REGS inregs, outregs;
      inregs.h.ah = 2;
      inregs.h.dl = 7;
      intdos (&inregs, &outregs);
    }
777 778
}

779 780 781 782 783
/* Given a face id FACE, extract the face parameters to be used for
   display until the face changes.  The face parameters (actually, its
   color) are used to construct the video attribute byte for each
   glyph during the construction of the buffer that is then blitted to
   the video RAM.  */
Kim F. Storm's avatar
Kim F. Storm committed
784 785 786
static void
IT_set_face (int face)
{
Juanma Barranquero's avatar
Juanma Barranquero committed
787
  struct frame *sf = SELECTED_FRAME ();
788 789 790
  struct face *fp  = FACE_FROM_ID (sf, face);
  struct face *dfp = FACE_FROM_ID (sf, DEFAULT_FACE_ID);
  unsigned long fg, bg, dflt_fg, dflt_bg;
791
  struct tty_display_info *tty = FRAME_TTY (sf);
Kim F. Storm's avatar
Kim F. Storm committed
792

793
  if (!fp)
794
    {
795
      fp = dfp;
796 797 798 799 800
      /* The default face for the frame should always be realized and
	 cached.  */
      if (!fp)
	abort ();
    }
Kim F. Storm's avatar
Kim F. Storm committed
801
  screen_face = face;
802 803
  fg = fp->foreground;
  bg = fp->background;
804 805
  dflt_fg = dfp->foreground;
  dflt_bg = dfp->background;
806

807 808 809 810
  /* Don't use invalid colors.  In particular, FACE_TTY_DEFAULT_* colors
     mean use the colors of the default face.  Note that we assume all
     16 colors to be available for the background, since Emacs switches
     on this mode (and loses the blinking attribute) at startup.  */
811
  if (fg == FACE_TTY_DEFAULT_COLOR || fg == FACE_TTY_DEFAULT_FG_COLOR)
812
    fg = FRAME_FOREGROUND_PIXEL (sf);
813
  else if (fg == FACE_TTY_DEFAULT_BG_COLOR)
814 815 816
    fg = FRAME_BACKGROUND_PIXEL (sf);
  if (bg == FACE_TTY_DEFAULT_COLOR || bg == FACE_TTY_DEFAULT_BG_COLOR)
    bg = FRAME_BACKGROUND_PIXEL (sf);
817
  else if (bg == FACE_TTY_DEFAULT_FG_COLOR)
818 819 820
    bg = FRAME_FOREGROUND_PIXEL (sf);

  /* Make sure highlighted lines really stand out, come what may.  */
821
  if (fp->tty_reverse_p && (fg == dflt_fg && bg == dflt_bg))
822 823 824 825 826 827
    {
      unsigned long tem = fg;

      fg = bg;
      bg = tem;
    }
828 829 830 831 832 833 834 835
  /* If the user requested inverse video, obey.  */
  if (inverse_video)
    {
      unsigned long tem2 = fg;

      fg = bg;
      bg = tem2;
    }
836
  if (tty->termscript)
837
    fprintf (tty->termscript, "<FACE %d: %lu/%lu[FG:%lu/BG:%lu]>", face,
838
	     fp->foreground, fp->background, fg, bg);
839 840 841 842 843 844 845 846 847 848
  if (fg >= 0 && fg < 16)
    {
      ScreenAttrib &= 0xf0;
      ScreenAttrib |= fg;
    }
  if (bg >= 0 && bg < 16)
    {
      ScreenAttrib &= 0x0f;
      ScreenAttrib |= ((bg & 0x0f) << 4);
    }
Kim F. Storm's avatar
Kim F. Storm committed
849 850
}

Eli Zaretskii's avatar
Eli Zaretskii committed
851 852
/* According to RBIL (INTERRUP.A, V-1000), 160 is the maximum possible
   width of a DOS display in any known text mode.  We multiply by 2 to
Juanma Barranquero's avatar
Juanma Barranquero committed
853
   accommodate the screen attribute byte.  */
Eli Zaretskii's avatar
Eli Zaretskii committed
854 855
#define MAX_SCREEN_BUF 160*2

856 857
extern unsigned char *encode_terminal_code (struct glyph *, int,
					    struct coding_system *);
858

859
static void
860
IT_write_glyphs (struct frame *f, struct glyph *str, int str_len)
Kim F. Storm's avatar
Kim F. Storm committed
861
{
Eli Zaretskii's avatar
Eli Zaretskii committed
862
  unsigned char screen_buf[MAX_SCREEN_BUF], *screen_bp, *bp;
863
  int offset = 2 * (new_pos_X + screen_size_X * new_pos_Y);
864
  register int sl = str_len;
865
  struct tty_display_info *tty = FRAME_TTY (f);
866
  struct frame *sf;
867
  unsigned char *conversion_buffer;
Morten Welinder's avatar
Morten Welinder committed
868

869 870 871 872 873 874 875
  /* If terminal_coding does any conversion, use it, otherwise use
     safe_terminal_coding.  We can't use CODING_REQUIRE_ENCODING here
     because it always returns 1 if terminal_coding.src_multibyte is 1.  */
  struct coding_system *coding = FRAME_TERMINAL_CODING (f);

  if (!(coding->common_flags & CODING_REQUIRE_ENCODING_MASK))
    coding = &safe_terminal_coding;
876

877
  if (str_len <= 0) return;
Eli Zaretskii's avatar
Eli Zaretskii committed
878

Juanma Barranquero's avatar
Juanma Barranquero committed
879
  sf = SELECTED_FRAME ();
880 881 882 883 884 885 886

  /* Since faces get cached and uncached behind our back, we can't
     rely on their indices in the cache being consistent across
     invocations.  So always reset the screen face to the default
     face of the frame, before writing glyphs, and let the glyphs
     set the right face if it's different from the default.  */
  IT_set_face (DEFAULT_FACE_ID);
Eli Zaretskii's avatar
Eli Zaretskii committed
887

888 889
  /* The mode bit CODING_MODE_LAST_BLOCK should be set to 1 only at
     the tail.  */
890
  coding->mode &= ~CODING_MODE_LAST_BLOCK;
Eli Zaretskii's avatar
Eli Zaretskii committed
891
  screen_bp = &screen_buf[0];
892
  while (sl > 0)
893
    {
894
      int cf;
Eli Zaretskii's avatar
Eli Zaretskii committed
895
      int n;
896

Eli Zaretskii's avatar
Eli Zaretskii committed
897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913
      /* If the face of this glyph is different from the current
	 screen face, update the screen attribute byte.  */
      cf = str->face_id;
      if (cf != screen_face)
	IT_set_face (cf);	/* handles invalid faces gracefully */

      /* Identify a run of glyphs with the same face.  */
      for (n = 1; n < sl; ++n)
	if (str[n].face_id != cf)
	  break;

      if (n >= sl)
	/* This is the last glyph.  */
	coding->mode |= CODING_MODE_LAST_BLOCK;

      conversion_buffer = encode_terminal_code (str, n, coding);
      if (coding->produced > 0)
914
	{
Eli Zaretskii's avatar
Eli Zaretskii committed
915 916
	  /* Copy the encoded bytes to the screen buffer.  */
	  for (bp = conversion_buffer; coding->produced--; bp++)
917
	    {
Eli Zaretskii's avatar
Eli Zaretskii committed
918 919 920
	      /* Paranoia: discard bytes that would overrun the end of
		 the screen buffer.  */
	      if (screen_bp - screen_buf <= MAX_SCREEN_BUF - 2)
921
		{
Eli Zaretskii's avatar
Eli Zaretskii committed
922 923
		  *screen_bp++ = (unsigned char)*bp;
		  *screen_bp++ = ScreenAttrib;
924
		}
Eli Zaretskii's avatar
Eli Zaretskii committed
925 926
	      if (tty->termscript)
		fputc (*bp, tty->termscript);
927 928
	    }
	}
Eli Zaretskii's avatar
Eli Zaretskii committed
929 930 931
      /* Update STR and its remaining length.  */
      str += n;
      sl -= n;
932 933
    }

Eli Zaretskii's avatar
Eli Zaretskii committed
934
  /* Dump whatever we have in the screen buffer.  */
Kim F. Storm's avatar
Kim F. Storm committed
935
  mouse_off_maybe ();
936
  dosmemput (screen_buf, screen_bp - screen_buf, (int)ScreenPrimary + offset);
937
  if (screen_virtual_segment)
938 939
    dosv_refresh_virtual_screen (offset, (screen_bp - screen_buf) / 2);
  new_pos_X += (screen_bp - screen_buf) / 2;
Kim F. Storm's avatar
Kim F. Storm committed
940
}
941

942 943 944 945
/************************************************************************
			  Mouse Highlight (and friends..)
 ************************************************************************/

946
/* Last window where we saw the mouse.  Used by mouse-autoselect-window.  */
947 948
static Lisp_Object last_mouse_window;

949 950
static int mouse_preempted = 0;	/* non-zero when XMenu gobbles mouse events */

951 952
int
popup_activated (void)
953
{
954
  return mouse_preempted;
955 956
}

957
/* Draw TEXT_AREA glyphs between START and END of glyph row ROW on
958 959
   window W.  X is relative to TEXT_AREA in W.  HL is a face override
   for drawing the glyphs.  */
960
void
961 962 963
tty_draw_row_with_mouse_face (struct window *w, struct glyph_row *row,
			      int start_hpos, int end_hpos,
			      enum draw_glyphs_face hl)
964 965
{
  struct frame *f = XFRAME (WINDOW_FRAME (w));
966
  struct tty_display_info *tty = FRAME_TTY (f);
967
  Mouse_HLInfo *hlinfo = &tty->mouse_highlight;
968

969
  if (hl == DRAW_MOUSE_FACE)
970
    {
971 972 973 974 975
      int vpos = row->y + WINDOW_TOP_EDGE_Y (w);
      int kstart = start_hpos + WINDOW_LEFT_EDGE_X (w);
      int nglyphs = end_hpos - start_hpos;
      int offset = ScreenPrimary + 2*(vpos*screen_size_X + kstart) + 1;
      int start_offset = offset;
976

977 978 979
      if (tty->termscript)
	fprintf (tty->termscript, "\n<MH+ %d-%d:%d>",
		 kstart, kstart + nglyphs - 1, vpos);
Eli Zaretskii's avatar
Eli Zaretskii committed
980

981
      mouse_off ();
982
      IT_set_face (hlinfo->mouse_face_face_id);
983 984 985 986 987 988 989
      /* Since we are going to change only the _colors_ of already
	 displayed text, there's no need to go through all the pain of
	 generating and encoding the text from the glyphs.  Instead,
	 we simply poke the attribute byte of each affected position
	 in video memory with the colors computed by IT_set_face!  */
      _farsetsel (_dos_ds);
      while (nglyphs--)
990
	{
991 992
	  _farnspokeb (offset, ScreenAttrib);
	  offset += 2;
993
	}
994 995 996
      if (screen_virtual_segment)
	dosv_refresh_virtual_screen (start_offset, end_hpos - start_hpos);
      mouse_on ();
997
    }
998
  else if (hl == DRAW_NORMAL_TEXT)
999
    {
1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014
      /* We are removing a previously-drawn mouse highlight.  The
	 safest way to do so is to redraw the glyphs anew, since all
	 kinds of faces and display tables could have changed behind
	 our back.  */
      int nglyphs = end_hpos - start_hpos;
      int save_x = new_pos_X, save_y = new_pos_Y;

      if (end_hpos >= row->used[TEXT_AREA])
	nglyphs = row->used[TEXT_AREA] - start_hpos;

      /* IT_write_glyphs writes at cursor position, so we need to
	 temporarily move cursor coordinates to the beginning of
	 the highlight region.  */
      new_pos_X = start_hpos + WINDOW_LEFT_EDGE_X (w);
      new_pos_Y = row->y + WINDOW_TOP_EDGE_Y (w);
1015

1016 1017 1018 1019 1020 1021 1022 1023
      if (tty->termscript)
	fprintf (tty->termscript, "<MH- %d-%d:%d>",
		 new_pos_X, new_pos_X + nglyphs - 1, new_pos_Y);
      IT_write_glyphs (f, row->glyphs[TEXT_AREA] + start_hpos, nglyphs);
      if (tty->termscript)
	fputs ("\n", tty->termscript);
      new_pos_X = save_x;
      new_pos_Y = save_y;
1024 1025 1026
    }
}

1027
static void
1028
IT_clear_end_of_line (struct frame *f, int first_unused)
Kim F. Storm's avatar
Kim F. Storm committed
1029 1030
{
  char *spaces, *sp;
Eli Zaretskii's avatar
Eli Zaretskii committed
1031
  int i, j, offset = 2 * (new_pos_X + screen_size_X * new_pos_Y);
1032
  struct tty_display_info *tty = FRAME_TTY (f);
1033

1034
  if (new_pos_X >= first_unused || fatal_error_in_progress)
1035
    return;
Kim F. Storm's avatar
Kim F. Storm committed
1036 1037

  IT_set_face (0);
1038
  i = (j = first_unused - new_pos_X) * 2;
1039 1040
  if (tty->termscript)
    fprintf (tty->termscript, "<CLR:EOL[%d..%d)>", new_pos_X, first_unused);
Kim F. Storm's avatar
Kim F. Storm committed
1041
  spaces = sp = alloca (i);
Eli Zaretskii's avatar
Eli Zaretskii committed
1042

Kim F. Storm's avatar
Kim F. Storm committed
1043
  while (--j >= 0)
1044
    {
Kim F. Storm's avatar
Kim F. Storm committed
1045 1046
      *sp++ = ' ';
      *sp++ = ScreenAttrib;
1047 1048
    }

Kim F. Storm's avatar
Kim F. Storm committed
1049
  mouse_off_maybe ();
1050 1051 1052
  dosmemput (spaces, i, (int)ScreenPrimary + offset);
  if (screen_virtual_segment)
    dosv_refresh_virtual_screen (offset, i / 2);
1053 1054 1055 1056

  /* clear_end_of_line_raw on term.c leaves the cursor at first_unused.
     Let's follow their lead, in case someone relies on this.  */
  new_pos_X = first_unused;
1057 1058
}

1059
static void
1060
IT_clear_screen (struct frame *f)
Kim F. Storm's avatar
Kim F. Storm committed
1061
{
1062 1063 1064 1065
  struct tty_display_info *tty = FRAME_TTY (f);

  if (tty->termscript)
    fprintf (tty->termscript, "<CLR:SCR>");
1066 1067 1068 1069 1070 1071 1072 1073 1074 1075
  /* We are sometimes called (from clear_garbaged_frames) when a new
     frame is being created, but its faces are not yet realized.  In
     such a case we cannot call IT_set_face, since it will fail to find
     any valid faces and will abort.  Instead, use the initial screen
     colors; that should mimic what a Unix tty does, which simply clears
     the screen with whatever default colors are in use.  */
  if (FACE_FROM_ID (SELECTED_FRAME (), DEFAULT_FACE_ID) == NULL)
    ScreenAttrib = (initial_screen_colors[0] << 4) | initial_screen_colors[1];
  else
    IT_set_face (0);
Kim F. Storm's avatar
Kim F. Storm committed
1076 1077
  mouse_off ();
  ScreenClear ();
1078 1079
  if (screen_virtual_segment)
    dosv_refresh_virtual_screen (0, screen_size);
Kim F. Storm's avatar
Kim F. Storm committed
1080 1081 1082
  new_pos_X = new_pos_Y = 0;
}

1083
static void
1084
IT_clear_to_end (struct frame *f)
Kim F. Storm's avatar
Kim F. Storm committed
1085
{
1086 1087 1088 1089
  struct tty_display_info *tty = FRAME_TTY (f);

  if (tty->termscript)
    fprintf (tty->termscript, "<CLR:EOS>");
Kim F. Storm's avatar
Kim F. Storm committed
1090 1091 1092

  while (new_pos_Y < screen_size_Y) {
    new_pos_X = 0;
1093
    IT_clear_end_of_line (f, screen_size_X);
Kim F. Storm's avatar
Kim F. Storm committed
1094 1095