cmds.c 16.6 KB
Newer Older
Jim Blandy's avatar
Jim Blandy committed
1
/* Simple built-in editing commands.
2

3
Copyright (C) 1985, 1993-1998, 2001-2012  Free Software Foundation, Inc.
Jim Blandy's avatar
Jim Blandy committed
4 5 6

This file is part of GNU Emacs.

7
GNU Emacs is free software: you can redistribute it and/or modify
Jim Blandy's avatar
Jim Blandy 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.
Jim Blandy's avatar
Jim Blandy 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/>.  */
Jim Blandy's avatar
Jim Blandy committed
19 20


21
#include <config.h>
22

Jim Blandy's avatar
Jim Blandy committed
23 24
#include "lisp.h"
#include "commands.h"
25
#include "character.h"
26
#include "buffer.h"
Jim Blandy's avatar
Jim Blandy committed
27
#include "syntax.h"
Richard M. Stallman's avatar
Richard M. Stallman committed
28
#include "window.h"
29
#include "keyboard.h"
Stefan Monnier's avatar
Stefan Monnier committed
30
#include "keymap.h"
Andreas Schwab's avatar
Andreas Schwab committed
31
#include "dispextern.h"
Andreas Schwab's avatar
Andreas Schwab committed
32
#include "frame.h"
Jim Blandy's avatar
Jim Blandy committed
33

34
static Lisp_Object Qkill_forward_chars, Qkill_backward_chars;
Jim Blandy's avatar
Jim Blandy committed
35

36
/* A possible value for a buffer's overwrite-mode variable.  */
37
static Lisp_Object Qoverwrite_mode_binary;
38

39
static int internal_self_insert (int, EMACS_INT);
Jim Blandy's avatar
Jim Blandy committed
40

Karl Heuer's avatar
Karl Heuer committed
41
DEFUN ("forward-point", Fforward_point, Sforward_point, 1, 1, 0,
42
       doc: /* Return buffer position N characters after (before if N negative) point.  */)
Dan Nicolaescu's avatar
Dan Nicolaescu committed
43
  (Lisp_Object n)
Karl Heuer's avatar
Karl Heuer committed
44
{
45
  CHECK_NUMBER (n);
Karl Heuer's avatar
Karl Heuer committed
46

47
  return make_number (PT + XINT (n));
Karl Heuer's avatar
Karl Heuer committed
48 49
}

50
/* Add N to point; or subtract N if FORWARD is false.  N defaults to 1.
51 52
   Validate the new location.  Return nil.  */
static Lisp_Object
53
move_point (Lisp_Object n, bool forward)
54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84
{
  /* This used to just set point to point + XINT (n), and then check
     to see if it was within boundaries.  But now that SET_PT can
     potentially do a lot of stuff (calling entering and exiting
     hooks, etcetera), that's not a good approach.  So we validate the
     proposed position, then set point.  */

  EMACS_INT new_point;

  if (NILP (n))
    XSETFASTINT (n, 1);
  else
    CHECK_NUMBER (n);

  new_point = PT + (forward ? XINT (n) : - XINT (n));

  if (new_point < BEGV)
    {
      SET_PT (BEGV);
      xsignal0 (Qbeginning_of_buffer);
    }
  if (new_point > ZV)
    {
      SET_PT (ZV);
      xsignal0 (Qend_of_buffer);
    }

  SET_PT (new_point);
  return Qnil;
}

Paul Eggert's avatar
Paul Eggert committed
85
DEFUN ("forward-char", Fforward_char, Sforward_char, 0, 1, "^p",
86 87 88 89 90
       doc: /* Move point N characters forward (backward if N is negative).
On reaching end or beginning of buffer, stop and signal error.

Depending on the bidirectional context, the movement may be to the
right or to the left on the screen.  This is in contrast with
91
\\[right-char], which see.  */)
Dan Nicolaescu's avatar
Dan Nicolaescu committed
92
  (Lisp_Object n)
Jim Blandy's avatar
Jim Blandy committed
93
{
94
  return move_point (n, 1);
Jim Blandy's avatar
Jim Blandy committed
95 96
}

97
DEFUN ("backward-char", Fbackward_char, Sbackward_char, 0, 1, "^p",
98 99 100 101 102
       doc: /* Move point N characters backward (forward if N is negative).
On attempt to pass beginning or end of buffer, stop and signal error.

Depending on the bidirectional context, the movement may be to the
right or to the left on the screen.  This is in contrast with
103
\\[left-char], which see.  */)
Dan Nicolaescu's avatar
Dan Nicolaescu committed
104
  (Lisp_Object n)
Jim Blandy's avatar
Jim Blandy committed
105
{
106
  return move_point (n, 0);
Jim Blandy's avatar
Jim Blandy committed
107 108
}

Paul Eggert's avatar
Paul Eggert committed
109
DEFUN ("forward-line", Fforward_line, Sforward_line, 0, 1, "^p",
110
       doc: /* Move N lines forward (backward if N is negative).
111 112
Precisely, if point is on line I, move to the start of line I + N
\("start of line" in the logical order).
113 114 115 116
If there isn't room, go as far as possible (no error).
Returns the count of lines left to move.  If moving forward,
that is N - number of lines moved; if backward, N + number moved.
With positive N, a non-empty line at the end counts as one line
117
successfully moved (for the return value).  */)
Dan Nicolaescu's avatar
Dan Nicolaescu committed
118
  (Lisp_Object n)
Jim Blandy's avatar
Jim Blandy committed
119
{
120 121
  ptrdiff_t opoint = PT, opoint_byte = PT_BYTE;
  ptrdiff_t pos, pos_byte;
122
  EMACS_INT count, shortage;
Jim Blandy's avatar
Jim Blandy committed
123

Jim Blandy's avatar
Jim Blandy committed
124
  if (NILP (n))
Jim Blandy's avatar
Jim Blandy committed
125 126 127
    count = 1;
  else
    {
128
      CHECK_NUMBER (n);
Jim Blandy's avatar
Jim Blandy committed
129 130 131
      count = XINT (n);
    }

132 133 134 135 136 137 138 139 140 141 142 143 144
  if (count <= 0)
    shortage = scan_newline (PT, PT_BYTE, BEGV, BEGV_BYTE, count - 1, 1);
  else
    shortage = scan_newline (PT, PT_BYTE, ZV, ZV_BYTE, count, 1);

  /* Since scan_newline does TEMP_SET_PT_BOTH,
     and we want to set PT "for real",
     go back to the old point and then come back here.  */
  pos = PT;
  pos_byte = PT_BYTE;
  TEMP_SET_PT_BOTH (opoint, opoint_byte);
  SET_PT_BOTH (pos, pos_byte);

Jim Blandy's avatar
Jim Blandy committed
145
  if (shortage > 0
146
      && (count <= 0
Jim Blandy's avatar
Jim Blandy committed
147
	  || (ZV > BEGV
148 149
	      && PT != opoint
	      && (FETCH_BYTE (PT_BYTE - 1) != '\n'))))
Jim Blandy's avatar
Jim Blandy committed
150
    shortage--;
151 152

  return make_number (count <= 0 ? - shortage : shortage);
Jim Blandy's avatar
Jim Blandy committed
153 154
}

155
DEFUN ("beginning-of-line", Fbeginning_of_line, Sbeginning_of_line, 0, 1, "^p",
156
       doc: /* Move point to beginning of current line (in the logical order).
157 158 159
With argument N not nil or 1, move forward N - 1 lines first.
If point reaches the beginning or end of buffer, it stops there.

160
This function constrains point to the current field unless this moves
161 162
point to a different line than the original, unconstrained result.
If N is nil or 1, and a front-sticky field starts at point, the point
163
does not move.  To ignore field boundaries bind
164 165 166
`inhibit-field-text-motion' to t, or use the `forward-line' function
instead.  For instance, `(forward-line 0)' does the same thing as
`(beginning-of-line)', except that it ignores field boundaries.  */)
Dan Nicolaescu's avatar
Dan Nicolaescu committed
167
  (Lisp_Object n)
Jim Blandy's avatar
Jim Blandy committed
168
{
Jim Blandy's avatar
Jim Blandy committed
169
  if (NILP (n))
170
    XSETFASTINT (n, 1);
Jim Blandy's avatar
Jim Blandy committed
171
  else
172
    CHECK_NUMBER (n);
Jim Blandy's avatar
Jim Blandy committed
173

174
  SET_PT (XINT (Fline_beginning_position (n)));
175

Jim Blandy's avatar
Jim Blandy committed
176 177 178
  return Qnil;
}

Paul Eggert's avatar
Paul Eggert committed
179
DEFUN ("end-of-line", Fend_of_line, Send_of_line, 0, 1, "^p",
180
       doc: /* Move point to end of current line (in the logical order).
181 182
With argument N not nil or 1, move forward N - 1 lines first.
If point reaches the beginning or end of buffer, it stops there.
Kenichi Handa's avatar
Kenichi Handa committed
183
To ignore intangibility, bind `inhibit-point-motion-hooks' to t.
184

185 186 187 188 189
This function constrains point to the current field unless this moves
point to a different line than the original, unconstrained result.  If
N is nil or 1, and a rear-sticky field ends at point, the point does
not move.  To ignore field boundaries bind `inhibit-field-text-motion'
to t.  */)
Dan Nicolaescu's avatar
Dan Nicolaescu committed
190
  (Lisp_Object n)
Jim Blandy's avatar
Jim Blandy committed
191
{
192
  ptrdiff_t newpos;
193

Jim Blandy's avatar
Jim Blandy committed
194
  if (NILP (n))
195
    XSETFASTINT (n, 1);
Jim Blandy's avatar
Jim Blandy committed
196
  else
197
    CHECK_NUMBER (n);
Jim Blandy's avatar
Jim Blandy committed
198

199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223
  while (1)
    {
      newpos = XINT (Fline_end_position (n));
      SET_PT (newpos);

      if (PT > newpos
	  && FETCH_CHAR (PT - 1) == '\n')
	{
	  /* If we skipped over a newline that follows
	     an invisible intangible run,
	     move back to the last tangible position
	     within the line.  */

	  SET_PT (PT - 1);
	  break;
	}
      else if (PT > newpos && PT < ZV
	       && FETCH_CHAR (PT) != '\n')
	/* If we skipped something intangible
	   and now we're not really at eol,
	   keep going.  */
	n = make_number (1);
      else
	break;
    }
Jim Blandy's avatar
Jim Blandy committed
224 225 226 227 228

  return Qnil;
}

DEFUN ("delete-char", Fdelete_char, Sdelete_char, 1, 2, "p\nP",
229 230 231
       doc: /* Delete the following N characters (previous if N is negative).
Optional second arg KILLFLAG non-nil means kill instead (save in kill ring).
Interactively, N is the prefix arg, and KILLFLAG is set if
232 233
N was explicitly specified.

234
The command `delete-forward-char' is preferable for interactive use.  */)
Dan Nicolaescu's avatar
Dan Nicolaescu committed
235
  (Lisp_Object n, Lisp_Object killflag)
Jim Blandy's avatar
Jim Blandy committed
236
{
237
  EMACS_INT pos;
Karl Heuer's avatar
Karl Heuer committed
238

239
  CHECK_NUMBER (n);
Jim Blandy's avatar
Jim Blandy committed
240

241
  pos = PT + XINT (n);
Jim Blandy's avatar
Jim Blandy committed
242
  if (NILP (killflag))
Jim Blandy's avatar
Jim Blandy committed
243 244 245
    {
      if (XINT (n) < 0)
	{
Karl Heuer's avatar
Karl Heuer committed
246
	  if (pos < BEGV)
247
	    xsignal0 (Qbeginning_of_buffer);
Jim Blandy's avatar
Jim Blandy committed
248
	  else
Karl Heuer's avatar
Karl Heuer committed
249
	    del_range (pos, PT);
Jim Blandy's avatar
Jim Blandy committed
250 251 252
	}
      else
	{
Karl Heuer's avatar
Karl Heuer committed
253
	  if (pos > ZV)
254
	    xsignal0 (Qend_of_buffer);
Jim Blandy's avatar
Jim Blandy committed
255
	  else
Karl Heuer's avatar
Karl Heuer committed
256
	    del_range (PT, pos);
Jim Blandy's avatar
Jim Blandy committed
257 258 259 260 261 262 263 264 265
	}
    }
  else
    {
      call1 (Qkill_forward_chars, n);
    }
  return Qnil;
}

266
static int nonundocount;
267

268 269
/* Note that there's code in command_loop_1 which typically avoids
   calling this.  */
Jim Blandy's avatar
Jim Blandy committed
270
DEFUN ("self-insert-command", Fself_insert_command, Sself_insert_command, 1, 1, "p",
271
       doc: /* Insert the character you type.
272 273 274 275
Whichever character you type to run this command is inserted.
Before insertion, `expand-abbrev' is executed if the inserted character does
not have word syntax and the previous character in the buffer does.
After insertion, the value of `auto-fill-function' is called if the
276 277
`auto-fill-chars' table has a non-nil value for the inserted character.
At the end, it runs `post-self-insert-hook'.  */)
Dan Nicolaescu's avatar
Dan Nicolaescu committed
278
  (Lisp_Object n)
Jim Blandy's avatar
Jim Blandy committed
279
{
280
  bool remove_boundary = 1;
281
  CHECK_NATNUM (n);
282

283
  if (!EQ (Vthis_command, KVAR (current_kboard, Vlast_command)))
284 285 286 287 288 289 290 291 292 293 294 295 296 297
    nonundocount = 0;

  if (NILP (Vexecuting_kbd_macro)
      && !EQ (minibuf_window, selected_window))
    {
      if (nonundocount <= 0 || nonundocount >= 20)
	{
	  remove_boundary = 0;
	  nonundocount = 0;
	}
      nonundocount++;
    }

  if (remove_boundary
Tom Tromey's avatar
Tom Tromey committed
298
      && CONSP (BVAR (current_buffer, undo_list))
299 300 301 302
      && NILP (XCAR (BVAR (current_buffer, undo_list)))
      /* Only remove auto-added boundaries, not boundaries
	 added be explicit calls to undo-boundary.  */
      && EQ (BVAR (current_buffer, undo_list), last_undo_boundary))
303
    /* Remove the undo_boundary that was just pushed.  */
Paul Eggert's avatar
Paul Eggert committed
304
    bset_undo_list (current_buffer, XCDR (BVAR (current_buffer, undo_list)));
Jim Blandy's avatar
Jim Blandy committed
305 306

  /* Barf if the key that invoked this was not a character.  */
307
  if (!CHARACTERP (last_command_event))
Jim Blandy's avatar
Jim Blandy committed
308
    bitch_at_user ();
309 310
  {
    int character = translate_char (Vtranslation_table_for_input,
311
				    XINT (last_command_event));
312
    int val = internal_self_insert (character, XFASTINT (n));
313 314 315
    if (val == 2)
      nonundocount = 0;
    frame_make_pointer_invisible ();
316
  }
Jim Blandy's avatar
Jim Blandy committed
317 318 319 320

  return Qnil;
}

321
/* Insert N times character C
322 323

   If this insertion is suitable for direct output (completely simple),
324 325
   return 0.  A value of 1 indicates this *might* not have been simple.
   A value of 2 means this did things that call for an undo boundary.  */
326

Stefan Monnier's avatar
Stefan Monnier committed
327
static Lisp_Object Qexpand_abbrev;
328
static Lisp_Object Qpost_self_insert_hook;
Stefan Monnier's avatar
Stefan Monnier committed
329

330
static int
331
internal_self_insert (int c, EMACS_INT n)
Jim Blandy's avatar
Jim Blandy committed
332 333 334 335
{
  int hairy = 0;
  Lisp_Object tem;
  register enum syntaxcode synt;
336
  Lisp_Object overwrite;
Karl Heuer's avatar
Karl Heuer committed
337 338 339
  /* Length of multi-byte form of C.  */
  int len;
  /* Working buffer and pointer for multi-byte form of C.  */
340
  unsigned char str[MAX_MULTIBYTE_LENGTH];
341 342
  ptrdiff_t chars_to_delete = 0;
  ptrdiff_t spaces_to_insert = 0;
Jim Blandy's avatar
Jim Blandy committed
343

Tom Tromey's avatar
Tom Tromey committed
344
  overwrite = BVAR (current_buffer, overwrite_mode);
345
  if (!NILP (Vbefore_change_functions) || !NILP (Vafter_change_functions))
Jim Blandy's avatar
Jim Blandy committed
346 347
    hairy = 1;

Karl Heuer's avatar
Karl Heuer committed
348
  /* At first, get multi-byte form of C in STR.  */
Tom Tromey's avatar
Tom Tromey committed
349
  if (!NILP (BVAR (current_buffer, enable_multibyte_characters)))
350
    {
351
      len = CHAR_STRING (c, str);
352 353 354 355
      if (len == 1)
	/* If C has modifier bits, this makes C an appropriate
           one-byte char.  */
	c = *str;
356
    }
Karl Heuer's avatar
Karl Heuer committed
357
  else
358
    {
359 360
      str[0] = (SINGLE_BYTE_CHAR_P (c)
		? c
361
		: multibyte_char_to_unibyte (c));
362 363
      len = 1;
    }
364
  if (!NILP (overwrite)
Karl Heuer's avatar
Karl Heuer committed
365
      && PT < ZV)
Jim Blandy's avatar
Jim Blandy committed
366
    {
Karl Heuer's avatar
Karl Heuer committed
367 368 369 370 371 372 373 374 375
      /* In overwrite-mode, we substitute a character at point (C2,
	 hereafter) by C.  For that, we delete C2 in advance.  But,
	 just substituting C2 by C may move a remaining text in the
	 line to the right or to the left, which is not preferable.
	 So we insert more spaces or delete more characters in the
	 following cases: if C is narrower than C2, after deleting C2,
	 we fill columns with spaces, if C is wider than C2, we delete
	 C2 and several characters following C2.  */

376 377 378
      /* This is the character after point.  */
      int c2 = FETCH_CHAR (PT_BYTE);

379 380
      int cwidth;

381 382 383 384 385
      /* Overwriting in binary-mode always replaces C2 by C.
	 Overwriting in textual-mode doesn't always do that.
	 It inserts newlines in the usual way,
	 and inserts any character at end of line
	 or before a tab if it doesn't use the whole width of the tab.  */
386
      if (EQ (overwrite, Qoverwrite_mode_binary))
387 388 389
	chars_to_delete = min (n, PTRDIFF_MAX);
      else if (c != '\n' && c2 != '\n'
	       && (cwidth = XFASTINT (Fchar_width (make_number (c)))) != 0)
Karl Heuer's avatar
Karl Heuer committed
390
	{
391 392 393
	  ptrdiff_t pos = PT;
	  ptrdiff_t pos_byte = PT_BYTE;
	  ptrdiff_t curcol = current_column ();
394

395
	  if (n <= (min (MOST_POSITIVE_FIXNUM, PTRDIFF_MAX) - curcol) / cwidth)
396
	    {
397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424
	      /* Column the cursor should be placed at after this insertion.
		 The value should be calculated only when necessary.  */
	      ptrdiff_t target_clm = curcol + n * cwidth;

	      /* The actual cursor position after the trial of moving
		 to column TARGET_CLM.  It is greater than TARGET_CLM
		 if the TARGET_CLM is middle of multi-column
		 character.  In that case, the new point is set after
		 that character.  */
	      ptrdiff_t actual_clm
		= XFASTINT (Fmove_to_column (make_number (target_clm), Qnil));

	      chars_to_delete = PT - pos;

	      if (actual_clm > target_clm)
		{
		  /* We will delete too many columns.  Let's fill columns
		     by spaces so that the remaining text won't move.  */
		  ptrdiff_t actual = PT_BYTE;
		  DEC_POS (actual);
		  if (FETCH_CHAR (actual) == '\t')
		    /* Rather than add spaces, let's just keep the tab. */
		    chars_to_delete--;
		  else
		    spaces_to_insert = actual_clm - target_clm;
		}

	      SET_PT_BOTH (pos, pos_byte);
425
	    }
Karl Heuer's avatar
Karl Heuer committed
426
	}
427
      hairy = 2;
Jim Blandy's avatar
Jim Blandy committed
428
    }
429 430 431

  synt = SYNTAX (c);

Tom Tromey's avatar
Tom Tromey committed
432
  if (!NILP (BVAR (current_buffer, abbrev_mode))
433
      && synt != Sword
Tom Tromey's avatar
Tom Tromey committed
434
      && NILP (BVAR (current_buffer, read_only))
435
      && PT > BEGV
Tom Tromey's avatar
Tom Tromey committed
436
      && (SYNTAX (!NILP (BVAR (current_buffer, enable_multibyte_characters))
Stefan Monnier's avatar
Stefan Monnier committed
437 438 439
		  ? XFASTINT (Fprevious_char ())
		  : UNIBYTE_TO_CHAR (XFASTINT (Fprevious_char ())))
	  == Sword))
Jim Blandy's avatar
Jim Blandy committed
440
    {
441
      EMACS_INT modiff = MODIFF;
442 443
      Lisp_Object sym;

Stefan Monnier's avatar
Stefan Monnier committed
444
      sym = call0 (Qexpand_abbrev);
445

Richard M. Stallman's avatar
Richard M. Stallman committed
446
      /* If we expanded an abbrev which has a hook,
447
	 and the hook has a non-nil `no-self-insert' property,
448
	 return right away--don't really self-insert.  */
449
      if (SYMBOLP (sym) && ! NILP (sym)
450 451
	  && ! NILP (XSYMBOL (sym)->function)
	  && SYMBOLP (XSYMBOL (sym)->function))
452 453
	{
	  Lisp_Object prop;
454
	  prop = Fget (XSYMBOL (sym)->function, intern ("no-self-insert"));
455
	  if (! NILP (prop))
456
	    return 1;
457 458
	}

459
      if (MODIFF != modiff)
460
	hairy = 2;
Jim Blandy's avatar
Jim Blandy committed
461
    }
462

463
  if (chars_to_delete)
464
    {
Tom Tromey's avatar
Tom Tromey committed
465
      int mc = ((NILP (BVAR (current_buffer, enable_multibyte_characters))
466 467 468
		 && SINGLE_BYTE_CHAR_P (c))
		? UNIBYTE_TO_CHAR (c) : c);
      Lisp_Object string = Fmake_string (make_number (n), make_number (mc));
Eli Zaretskii's avatar
Eli Zaretskii committed
469

470 471 472 473
      if (spaces_to_insert)
	{
	  tem = Fmake_string (make_number (spaces_to_insert),
			      make_number (' '));
474
	  string = concat2 (string, tem);
475 476
	}

477
      replace_range (PT, PT + chars_to_delete, string, 1, 1, 1);
478
      Fforward_char (make_number (n + spaces_to_insert));
479 480 481 482
    }
  else if (n > 1)
    {
      USE_SAFE_ALLOCA;
483
      char *strn, *p;
484
      SAFE_NALLOCA (strn, len, n);
485 486 487 488
      for (p = strn; n > 0; n--, p += len)
	memcpy (p, str, len);
      insert_and_inherit (strn, p - strn);
      SAFE_FREE ();
489
    }
490
  else if (n > 0)
491
    insert_and_inherit ((char *) str, len);
492

493 494 495
  if ((CHAR_TABLE_P (Vauto_fill_chars)
       ? !NILP (CHAR_TABLE_REF (Vauto_fill_chars, c))
       : (c == ' ' || c == '\n'))
Tom Tromey's avatar
Tom Tromey committed
496
      && !NILP (BVAR (current_buffer, auto_fill_function)))
Jim Blandy's avatar
Jim Blandy committed
497
    {
498
      Lisp_Object auto_fill_result;
499

Karl Heuer's avatar
Karl Heuer committed
500
      if (c == '\n')
501 502 503 504
	/* After inserting a newline, move to previous line and fill
	   that.  Must have the newline in place already so filling and
	   justification, if any, know where the end is going to be.  */
	SET_PT_BOTH (PT - 1, PT_BYTE - 1);
505
      auto_fill_result = call0 (BVAR (current_buffer, auto_fill_function));
506 507
      /* Test PT < ZV in case the auto-fill-function is strange.  */
      if (c == '\n' && PT < ZV)
508
	SET_PT_BOTH (PT + 1, PT_BYTE + 1);
509
      if (!NILP (auto_fill_result))
510
	hairy = 2;
Jim Blandy's avatar
Jim Blandy committed
511
    }
512

Stefan Monnier's avatar
Stefan Monnier committed
513
  /* Run hooks for electric keys.  */
514
  Frun_hooks (1, &Qpost_self_insert_hook);
Stefan Monnier's avatar
Stefan Monnier committed
515

Jim Blandy's avatar
Jim Blandy committed
516 517 518 519 520
  return hairy;
}

/* module initialization */

Andreas Schwab's avatar
Andreas Schwab committed
521
void
522
syms_of_cmds (void)
Jim Blandy's avatar
Jim Blandy committed
523
{
524 525 526 527 528
  DEFSYM (Qkill_backward_chars, "kill-backward-chars");
  DEFSYM (Qkill_forward_chars, "kill-forward-chars");
  DEFSYM (Qoverwrite_mode_binary, "overwrite-mode-binary");
  DEFSYM (Qexpand_abbrev, "expand-abbrev");
  DEFSYM (Qpost_self_insert_hook, "post-self-insert-hook");
529

530
  DEFVAR_LISP ("post-self-insert-hook", Vpost_self_insert_hook,
Stefan Monnier's avatar
Stefan Monnier committed
531
	       doc: /* Hook run at the end of `self-insert-command'.
532
This is run after inserting the character.  */);
Stefan Monnier's avatar
Stefan Monnier committed
533
  Vpost_self_insert_hook = Qnil;
534

Karl Heuer's avatar
Karl Heuer committed
535
  defsubr (&Sforward_point);
Jim Blandy's avatar
Jim Blandy committed
536 537 538 539 540 541 542 543 544 545
  defsubr (&Sforward_char);
  defsubr (&Sbackward_char);
  defsubr (&Sforward_line);
  defsubr (&Sbeginning_of_line);
  defsubr (&Send_of_line);

  defsubr (&Sdelete_char);
  defsubr (&Sself_insert_command);
}

Andreas Schwab's avatar
Andreas Schwab committed
546
void
547
keys_of_cmds (void)
Jim Blandy's avatar
Jim Blandy committed
548 549 550
{
  int n;

551
  nonundocount = 0;
552
  initial_define_key (global_map, Ctl ('I'), "self-insert-command");
Jim Blandy's avatar
Jim Blandy committed
553 554
  for (n = 040; n < 0177; n++)
    initial_define_key (global_map, n, "self-insert-command");
555 556 557 558
#ifdef MSDOS
  for (n = 0200; n < 0240; n++)
    initial_define_key (global_map, n, "self-insert-command");
#endif
559
  for (n = 0240; n < 0400; n++)
560
    initial_define_key (global_map, n, "self-insert-command");
Jim Blandy's avatar
Jim Blandy committed
561 562 563 564 565 566

  initial_define_key (global_map, Ctl ('A'), "beginning-of-line");
  initial_define_key (global_map, Ctl ('B'), "backward-char");
  initial_define_key (global_map, Ctl ('E'), "end-of-line");
  initial_define_key (global_map, Ctl ('F'), "forward-char");
}