cmds.c 16.7 KB
Newer Older
Jim Blandy's avatar
Jim Blandy committed
1
/* Simple built-in editing commands.
2

Paul Eggert's avatar
Paul Eggert committed
3
Copyright (C) 1985, 1993-1998, 2001-2015 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
       doc: /* Move point N characters forward (backward if N is negative).
On reaching end or beginning of buffer, stop and signal error.
Chong Yidong's avatar
Chong Yidong committed
88
Interactively, N is the numeric prefix argument.
89
If N is omitted or nil, move point 1 character forward.
90 91 92

Depending on the bidirectional context, the movement may be to the
right or to the left on the screen.  This is in contrast with
93
\\[right-char], which see.  */)
Dan Nicolaescu's avatar
Dan Nicolaescu committed
94
  (Lisp_Object n)
Jim Blandy's avatar
Jim Blandy committed
95
{
96
  return move_point (n, 1);
Jim Blandy's avatar
Jim Blandy committed
97 98
}

99
DEFUN ("backward-char", Fbackward_char, Sbackward_char, 0, 1, "^p",
100 101
       doc: /* Move point N characters backward (forward if N is negative).
On attempt to pass beginning or end of buffer, stop and signal error.
Chong Yidong's avatar
Chong Yidong committed
102
Interactively, N is the numeric prefix argument.
103
If N is omitted or nil, move point 1 character backward.
104 105 106

Depending on the bidirectional context, the movement may be to the
right or to the left on the screen.  This is in contrast with
107
\\[left-char], which see.  */)
Dan Nicolaescu's avatar
Dan Nicolaescu committed
108
  (Lisp_Object n)
Jim Blandy's avatar
Jim Blandy committed
109
{
110
  return move_point (n, 0);
Jim Blandy's avatar
Jim Blandy committed
111 112
}

Paul Eggert's avatar
Paul Eggert committed
113
DEFUN ("forward-line", Fforward_line, Sforward_line, 0, 1, "^p",
114
       doc: /* Move N lines forward (backward if N is negative).
115 116
Precisely, if point is on line I, move to the start of line I + N
\("start of line" in the logical order).
117 118 119 120
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
121
successfully moved (for the return value).  */)
Dan Nicolaescu's avatar
Dan Nicolaescu committed
122
  (Lisp_Object n)
Jim Blandy's avatar
Jim Blandy committed
123
{
124
  ptrdiff_t opoint = PT, pos, pos_byte, shortage, count;
Jim Blandy's avatar
Jim Blandy committed
125

Jim Blandy's avatar
Jim Blandy committed
126
  if (NILP (n))
Jim Blandy's avatar
Jim Blandy committed
127 128 129
    count = 1;
  else
    {
130
      CHECK_NUMBER (n);
Jim Blandy's avatar
Jim Blandy committed
131 132 133
      count = XINT (n);
    }

134
  shortage = scan_newline_from_point (count, &pos, &pos_byte);
135

136 137
  SET_PT_BOTH (pos, pos_byte);

Jim Blandy's avatar
Jim Blandy committed
138
  if (shortage > 0
139
      && (count <= 0
Jim Blandy's avatar
Jim Blandy committed
140
	  || (ZV > BEGV
141 142
	      && PT != opoint
	      && (FETCH_BYTE (PT_BYTE - 1) != '\n'))))
Jim Blandy's avatar
Jim Blandy committed
143
    shortage--;
144 145

  return make_number (count <= 0 ? - shortage : shortage);
Jim Blandy's avatar
Jim Blandy committed
146 147
}

148
DEFUN ("beginning-of-line", Fbeginning_of_line, Sbeginning_of_line, 0, 1, "^p",
149
       doc: /* Move point to beginning of current line (in the logical order).
150 151 152
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.

153
This function constrains point to the current field unless this moves
154 155
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
156
does not move.  To ignore field boundaries bind
157 158 159
`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
160
  (Lisp_Object n)
Jim Blandy's avatar
Jim Blandy committed
161
{
Jim Blandy's avatar
Jim Blandy committed
162
  if (NILP (n))
163
    XSETFASTINT (n, 1);
Jim Blandy's avatar
Jim Blandy committed
164
  else
165
    CHECK_NUMBER (n);
Jim Blandy's avatar
Jim Blandy committed
166

167
  SET_PT (XINT (Fline_beginning_position (n)));
168

Jim Blandy's avatar
Jim Blandy committed
169 170 171
  return Qnil;
}

Paul Eggert's avatar
Paul Eggert committed
172
DEFUN ("end-of-line", Fend_of_line, Send_of_line, 0, 1, "^p",
173
       doc: /* Move point to end of current line (in the logical order).
174 175
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
176
To ignore intangibility, bind `inhibit-point-motion-hooks' to t.
177

178 179 180 181 182
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
183
  (Lisp_Object n)
Jim Blandy's avatar
Jim Blandy committed
184
{
185
  ptrdiff_t newpos;
186

Jim Blandy's avatar
Jim Blandy committed
187
  if (NILP (n))
188
    XSETFASTINT (n, 1);
Jim Blandy's avatar
Jim Blandy committed
189
  else
190
    CHECK_NUMBER (n);
Jim Blandy's avatar
Jim Blandy committed
191

192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216
  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
217 218 219 220 221

  return Qnil;
}

DEFUN ("delete-char", Fdelete_char, Sdelete_char, 1, 2, "p\nP",
222 223 224
       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
225 226
N was explicitly specified.

227 228
The command `delete-forward-char' is preferable for interactive use, e.g.
because it respects values of `delete-active-region' and `overwrite-mode'.  */)
Dan Nicolaescu's avatar
Dan Nicolaescu committed
229
  (Lisp_Object n, Lisp_Object killflag)
Jim Blandy's avatar
Jim Blandy committed
230
{
231
  EMACS_INT pos;
Karl Heuer's avatar
Karl Heuer committed
232

233
  CHECK_NUMBER (n);
Jim Blandy's avatar
Jim Blandy committed
234

235
  pos = PT + XINT (n);
Jim Blandy's avatar
Jim Blandy committed
236
  if (NILP (killflag))
Jim Blandy's avatar
Jim Blandy committed
237 238 239
    {
      if (XINT (n) < 0)
	{
Karl Heuer's avatar
Karl Heuer committed
240
	  if (pos < BEGV)
241
	    xsignal0 (Qbeginning_of_buffer);
Jim Blandy's avatar
Jim Blandy committed
242
	  else
Karl Heuer's avatar
Karl Heuer committed
243
	    del_range (pos, PT);
Jim Blandy's avatar
Jim Blandy committed
244 245 246
	}
      else
	{
Karl Heuer's avatar
Karl Heuer committed
247
	  if (pos > ZV)
248
	    xsignal0 (Qend_of_buffer);
Jim Blandy's avatar
Jim Blandy committed
249
	  else
Karl Heuer's avatar
Karl Heuer committed
250
	    del_range (PT, pos);
Jim Blandy's avatar
Jim Blandy committed
251 252 253 254 255 256 257 258 259
	}
    }
  else
    {
      call1 (Qkill_forward_chars, n);
    }
  return Qnil;
}

260
static int nonundocount;
261

262 263
/* Note that there's code in command_loop_1 which typically avoids
   calling this.  */
Jim Blandy's avatar
Jim Blandy committed
264
DEFUN ("self-insert-command", Fself_insert_command, Sself_insert_command, 1, 1, "p",
265
       doc: /* Insert the character you type.
266
Whichever character you type to run this command is inserted.
267
The numeric prefix argument N says how many times to repeat the insertion.
268 269 270
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
271 272
`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
273
  (Lisp_Object n)
Jim Blandy's avatar
Jim Blandy committed
274
{
275
  bool remove_boundary = 1;
276 277
  CHECK_NUMBER (n);

278 279
  if (XFASTINT (n) < 0)
    error ("Negative repetition argument %"pI"d", XFASTINT (n));
280

281
  if (!EQ (Vthis_command, KVAR (current_kboard, Vlast_command)))
282 283 284 285 286 287 288 289 290 291 292 293 294 295
    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
296
      && CONSP (BVAR (current_buffer, undo_list))
297 298 299 300
      && 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))
301
    /* Remove the undo_boundary that was just pushed.  */
Paul Eggert's avatar
Paul Eggert committed
302
    bset_undo_list (current_buffer, XCDR (BVAR (current_buffer, undo_list)));
Jim Blandy's avatar
Jim Blandy committed
303 304

  /* Barf if the key that invoked this was not a character.  */
305
  if (!CHARACTERP (last_command_event))
Jim Blandy's avatar
Jim Blandy committed
306
    bitch_at_user ();
307
  else {
308
    int character = translate_char (Vtranslation_table_for_input,
309
				    XINT (last_command_event));
310
    int val = internal_self_insert (character, XFASTINT (n));
311 312
    if (val == 2)
      nonundocount = 0;
313
    frame_make_pointer_invisible (SELECTED_FRAME ());
314
  }
Jim Blandy's avatar
Jim Blandy committed
315 316 317 318

  return Qnil;
}

319
/* Insert N times character C
320 321

   If this insertion is suitable for direct output (completely simple),
322 323
   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.  */
324

Stefan Monnier's avatar
Stefan Monnier committed
325
static Lisp_Object Qexpand_abbrev;
326
static Lisp_Object Qpost_self_insert_hook;
Stefan Monnier's avatar
Stefan Monnier committed
327

328
static int
329
internal_self_insert (int c, EMACS_INT n)
Jim Blandy's avatar
Jim Blandy committed
330 331 332 333
{
  int hairy = 0;
  Lisp_Object tem;
  register enum syntaxcode synt;
334
  Lisp_Object overwrite;
Karl Heuer's avatar
Karl Heuer committed
335 336 337
  /* Length of multi-byte form of C.  */
  int len;
  /* Working buffer and pointer for multi-byte form of C.  */
338
  unsigned char str[MAX_MULTIBYTE_LENGTH];
339 340
  ptrdiff_t chars_to_delete = 0;
  ptrdiff_t spaces_to_insert = 0;
Jim Blandy's avatar
Jim Blandy committed
341

Tom Tromey's avatar
Tom Tromey committed
342
  overwrite = BVAR (current_buffer, overwrite_mode);
343
  if (!NILP (Vbefore_change_functions) || !NILP (Vafter_change_functions))
Jim Blandy's avatar
Jim Blandy committed
344 345
    hairy = 1;

Karl Heuer's avatar
Karl Heuer committed
346
  /* At first, get multi-byte form of C in STR.  */
Tom Tromey's avatar
Tom Tromey committed
347
  if (!NILP (BVAR (current_buffer, enable_multibyte_characters)))
348
    {
349
      len = CHAR_STRING (c, str);
350 351 352 353
      if (len == 1)
	/* If C has modifier bits, this makes C an appropriate
           one-byte char.  */
	c = *str;
354
    }
Karl Heuer's avatar
Karl Heuer committed
355
  else
356
    {
357
      str[0] = SINGLE_BYTE_CHAR_P (c) ? c : CHAR_TO_BYTE8 (c);
358 359
      len = 1;
    }
360
  if (!NILP (overwrite)
Karl Heuer's avatar
Karl Heuer committed
361
      && PT < ZV)
Jim Blandy's avatar
Jim Blandy committed
362
    {
Karl Heuer's avatar
Karl Heuer committed
363 364 365 366 367 368 369 370 371
      /* 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.  */

372 373 374
      /* This is the character after point.  */
      int c2 = FETCH_CHAR (PT_BYTE);

375 376
      int cwidth;

377 378 379 380 381
      /* 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.  */
382
      if (EQ (overwrite, Qoverwrite_mode_binary))
383 384 385
	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
386
	{
387 388 389
	  ptrdiff_t pos = PT;
	  ptrdiff_t pos_byte = PT_BYTE;
	  ptrdiff_t curcol = current_column ();
390

391
	  if (n <= (min (MOST_POSITIVE_FIXNUM, PTRDIFF_MAX) - curcol) / cwidth)
392
	    {
393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420
	      /* 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);
421
	    }
Karl Heuer's avatar
Karl Heuer committed
422
	}
423
      hairy = 2;
Jim Blandy's avatar
Jim Blandy committed
424
    }
425 426 427

  synt = SYNTAX (c);

Tom Tromey's avatar
Tom Tromey committed
428
  if (!NILP (BVAR (current_buffer, abbrev_mode))
429
      && synt != Sword
Tom Tromey's avatar
Tom Tromey committed
430
      && NILP (BVAR (current_buffer, read_only))
431
      && PT > BEGV
Tom Tromey's avatar
Tom Tromey committed
432
      && (SYNTAX (!NILP (BVAR (current_buffer, enable_multibyte_characters))
Stefan Monnier's avatar
Stefan Monnier committed
433 434 435
		  ? XFASTINT (Fprevious_char ())
		  : UNIBYTE_TO_CHAR (XFASTINT (Fprevious_char ())))
	  == Sword))
Jim Blandy's avatar
Jim Blandy committed
436
    {
437
      EMACS_INT modiff = MODIFF;
438 439
      Lisp_Object sym;

Stefan Monnier's avatar
Stefan Monnier committed
440
      sym = call0 (Qexpand_abbrev);
441

Richard M. Stallman's avatar
Richard M. Stallman committed
442
      /* If we expanded an abbrev which has a hook,
443
	 and the hook has a non-nil `no-self-insert' property,
444
	 return right away--don't really self-insert.  */
445
      if (SYMBOLP (sym) && ! NILP (sym)
446 447
	  && ! NILP (XSYMBOL (sym)->function)
	  && SYMBOLP (XSYMBOL (sym)->function))
448 449
	{
	  Lisp_Object prop;
450
	  prop = Fget (XSYMBOL (sym)->function, intern ("no-self-insert"));
451
	  if (! NILP (prop))
452
	    return 1;
453 454
	}

455
      if (MODIFF != modiff)
456
	hairy = 2;
Jim Blandy's avatar
Jim Blandy committed
457
    }
458

459
  if (chars_to_delete)
460
    {
Tom Tromey's avatar
Tom Tromey committed
461
      int mc = ((NILP (BVAR (current_buffer, enable_multibyte_characters))
462 463 464
		 && 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
465

466 467 468 469
      if (spaces_to_insert)
	{
	  tem = Fmake_string (make_number (spaces_to_insert),
			      make_number (' '));
470
	  string = concat2 (string, tem);
471 472
	}

473
      replace_range (PT, PT + chars_to_delete, string, 1, 1, 1);
474
      Fforward_char (make_number (n + spaces_to_insert));
475 476 477 478
    }
  else if (n > 1)
    {
      USE_SAFE_ALLOCA;
479
      char *strn, *p;
480
      SAFE_NALLOCA (strn, len, n);
481 482 483 484
      for (p = strn; n > 0; n--, p += len)
	memcpy (p, str, len);
      insert_and_inherit (strn, p - strn);
      SAFE_FREE ();
485
    }
486
  else if (n > 0)
487
    insert_and_inherit ((char *) str, len);
488

489 490 491
  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
492
      && !NILP (BVAR (current_buffer, auto_fill_function)))
Jim Blandy's avatar
Jim Blandy committed
493
    {
494
      Lisp_Object auto_fill_result;
495

Karl Heuer's avatar
Karl Heuer committed
496
      if (c == '\n')
497 498 499 500
	/* 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);
501
      auto_fill_result = call0 (BVAR (current_buffer, auto_fill_function));
502 503
      /* Test PT < ZV in case the auto-fill-function is strange.  */
      if (c == '\n' && PT < ZV)
504
	SET_PT_BOTH (PT + 1, PT_BYTE + 1);
505
      if (!NILP (auto_fill_result))
506
	hairy = 2;
Jim Blandy's avatar
Jim Blandy committed
507
    }
508

Stefan Monnier's avatar
Stefan Monnier committed
509
  /* Run hooks for electric keys.  */
510
  Frun_hooks (1, &Qpost_self_insert_hook);
Stefan Monnier's avatar
Stefan Monnier committed
511

Jim Blandy's avatar
Jim Blandy committed
512 513 514 515 516
  return hairy;
}

/* module initialization */

Andreas Schwab's avatar
Andreas Schwab committed
517
void
518
syms_of_cmds (void)
Jim Blandy's avatar
Jim Blandy committed
519
{
520 521 522 523 524
  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");
525

526
  DEFVAR_LISP ("post-self-insert-hook", Vpost_self_insert_hook,
Stefan Monnier's avatar
Stefan Monnier committed
527
	       doc: /* Hook run at the end of `self-insert-command'.
528
This is run after inserting the character.  */);
Stefan Monnier's avatar
Stefan Monnier committed
529
  Vpost_self_insert_hook = Qnil;
530

Karl Heuer's avatar
Karl Heuer committed
531
  defsubr (&Sforward_point);
Jim Blandy's avatar
Jim Blandy committed
532 533 534 535 536 537 538 539 540 541
  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
542
void
543
keys_of_cmds (void)
Jim Blandy's avatar
Jim Blandy committed
544 545 546
{
  int n;

547
  nonundocount = 0;
548
  initial_define_key (global_map, Ctl ('I'), "self-insert-command");
Jim Blandy's avatar
Jim Blandy committed
549 550
  for (n = 040; n < 0177; n++)
    initial_define_key (global_map, n, "self-insert-command");
551 552 553 554
#ifdef MSDOS
  for (n = 0200; n < 0240; n++)
    initial_define_key (global_map, n, "self-insert-command");
#endif
555
  for (n = 0240; n < 0400; n++)
556
    initial_define_key (global_map, n, "self-insert-command");
Jim Blandy's avatar
Jim Blandy committed
557 558 559 560 561 562

  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");
}