cmds.c 17.7 KB
Newer Older
Jim Blandy's avatar
Jim Blandy committed
1
/* Simple built-in editing commands.
2
   Copyright (C) 1985, 1993, 1994, 1995, 1996, 1997, 1998, 2001, 2002,
Glenn Morris's avatar
Glenn Morris committed
3
                 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
Glenn Morris's avatar
Glenn Morris committed
4
                 Free Software Foundation, Inc.
Jim Blandy's avatar
Jim Blandy committed
5 6 7

This file is part of GNU Emacs.

8
GNU Emacs is free software: you can redistribute it and/or modify
Jim Blandy's avatar
Jim Blandy committed
9
it under the terms of the GNU General Public License as published by
10 11
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Jim Blandy's avatar
Jim Blandy committed
12 13 14 15 16 17 18

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
19
along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
Jim Blandy's avatar
Jim Blandy committed
20 21


22
#include <config.h>
23
#include <setjmp.h>
Jim Blandy's avatar
Jim Blandy committed
24 25 26
#include "lisp.h"
#include "commands.h"
#include "buffer.h"
27
#include "character.h"
Jim Blandy's avatar
Jim Blandy committed
28
#include "syntax.h"
Richard M. Stallman's avatar
Richard M. Stallman committed
29
#include "window.h"
30
#include "keyboard.h"
Stefan Monnier's avatar
Stefan Monnier committed
31
#include "keymap.h"
Andreas Schwab's avatar
Andreas Schwab committed
32
#include "dispextern.h"
Andreas Schwab's avatar
Andreas Schwab committed
33
#include "frame.h"
Jim Blandy's avatar
Jim Blandy committed
34 35 36

Lisp_Object Qkill_forward_chars, Qkill_backward_chars, Vblink_paren_function;

37 38 39
/* A possible value for a buffer's overwrite-mode variable.  */
Lisp_Object Qoverwrite_mode_binary;

40 41 42 43 44 45 46
/* Non-nil means put this face on the next self-inserting character.  */
Lisp_Object Vself_insert_face;

/* This is the command that set up Vself_insert_face.  */
Lisp_Object Vself_insert_face_command;

extern Lisp_Object Qface;
47
extern Lisp_Object Vtranslation_table_for_input;
Jim Blandy's avatar
Jim Blandy committed
48

Karl Heuer's avatar
Karl Heuer committed
49
DEFUN ("forward-point", Fforward_point, Sforward_point, 1, 1, 0,
50
       doc: /* Return buffer position N characters after (before if N negative) point.  */)
Dan Nicolaescu's avatar
Dan Nicolaescu committed
51
  (Lisp_Object n)
Karl Heuer's avatar
Karl Heuer committed
52
{
53
  CHECK_NUMBER (n);
Karl Heuer's avatar
Karl Heuer committed
54

55
  return make_number (PT + XINT (n));
Karl Heuer's avatar
Karl Heuer committed
56 57
}

58
DEFUN ("forward-char", Fforward_char, Sforward_char, 0, 1, "^p",
59 60 61 62 63
       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
64
\\[right-char], which see.  */)
Dan Nicolaescu's avatar
Dan Nicolaescu committed
65
  (Lisp_Object n)
Jim Blandy's avatar
Jim Blandy committed
66
{
67 68
  if (NILP (n))
    XSETFASTINT (n, 1);
Jim Blandy's avatar
Jim Blandy committed
69
  else
70
    CHECK_NUMBER (n);
Jim Blandy's avatar
Jim Blandy committed
71

72
  /* This used to just set point to point + XINT (n), and then check
73 74 75 76 77
     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.  */
  {
78
    int new_point = PT + XINT (n);
79 80 81 82

    if (new_point < BEGV)
      {
	SET_PT (BEGV);
83
	xsignal0 (Qbeginning_of_buffer);
84 85 86 87
      }
    if (new_point > ZV)
      {
	SET_PT (ZV);
88
	xsignal0 (Qend_of_buffer);
89 90 91 92 93
      }

    SET_PT (new_point);
  }

Jim Blandy's avatar
Jim Blandy committed
94 95 96
  return Qnil;
}

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
{
106 107
  if (NILP (n))
    XSETFASTINT (n, 1);
Jim Blandy's avatar
Jim Blandy committed
108
  else
109
    CHECK_NUMBER (n);
Jim Blandy's avatar
Jim Blandy committed
110

111 112
  XSETINT (n, - XINT (n));
  return Fforward_char (n);
Jim Blandy's avatar
Jim Blandy committed
113 114
}

115
DEFUN ("forward-line", Fforward_line, Sforward_line, 0, 1, "^p",
116 117 118 119 120 121
       doc: /* Move N lines forward (backward if N is negative).
Precisely, if point is on line I, move to the start of line I + N.
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
122
successfully moved (for the return value).  */)
Dan Nicolaescu's avatar
Dan Nicolaescu committed
123
  (Lisp_Object n)
Jim Blandy's avatar
Jim Blandy committed
124
{
125 126 127
  int opoint = PT, opoint_byte = PT_BYTE;
  int pos, pos_byte;
  int count, shortage;
Jim Blandy's avatar
Jim Blandy committed
128

Jim Blandy's avatar
Jim Blandy committed
129
  if (NILP (n))
Jim Blandy's avatar
Jim Blandy committed
130 131 132
    count = 1;
  else
    {
133
      CHECK_NUMBER (n);
Jim Blandy's avatar
Jim Blandy committed
134 135 136
      count = XINT (n);
    }

137 138 139 140 141 142 143 144 145 146 147 148 149
  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
150
  if (shortage > 0
151
      && (count <= 0
Jim Blandy's avatar
Jim Blandy committed
152
	  || (ZV > BEGV
153 154
	      && PT != opoint
	      && (FETCH_BYTE (PT_BYTE - 1) != '\n'))))
Jim Blandy's avatar
Jim Blandy committed
155
    shortage--;
156 157

  return make_number (count <= 0 ? - shortage : shortage);
Jim Blandy's avatar
Jim Blandy committed
158 159
}

160
DEFUN ("beginning-of-line", Fbeginning_of_line, Sbeginning_of_line, 0, 1, "^p",
161 162 163 164
       doc: /* Move point to beginning of current line.
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.

165
This function constrains point to the current field unless this moves
166 167
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
168
does not move.  To ignore field boundaries bind
169 170 171
`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
172
  (Lisp_Object n)
Jim Blandy's avatar
Jim Blandy committed
173
{
Jim Blandy's avatar
Jim Blandy committed
174
  if (NILP (n))
175
    XSETFASTINT (n, 1);
Jim Blandy's avatar
Jim Blandy committed
176
  else
177
    CHECK_NUMBER (n);
Jim Blandy's avatar
Jim Blandy committed
178

179
  SET_PT (XINT (Fline_beginning_position (n)));
180

Jim Blandy's avatar
Jim Blandy committed
181 182 183
  return Qnil;
}

184
DEFUN ("end-of-line", Fend_of_line, Send_of_line, 0, 1, "^p",
185 186 187
       doc: /* Move point to end of current line.
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
188
To ignore intangibility, bind `inhibit-point-motion-hooks' to t.
189

190 191 192 193 194
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
195
  (Lisp_Object n)
Jim Blandy's avatar
Jim Blandy committed
196
{
197 198
  int newpos;

Jim Blandy's avatar
Jim Blandy committed
199
  if (NILP (n))
200
    XSETFASTINT (n, 1);
Jim Blandy's avatar
Jim Blandy committed
201
  else
202
    CHECK_NUMBER (n);
Jim Blandy's avatar
Jim Blandy committed
203

204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228
  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
229 230 231 232 233

  return Qnil;
}

DEFUN ("delete-char", Fdelete_char, Sdelete_char, 1, 2, "p\nP",
234 235 236
       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
237 238 239
N was explicitly specified.

The command `delete-forward' is preferable for interactive use.  */)
Dan Nicolaescu's avatar
Dan Nicolaescu committed
240
  (Lisp_Object n, Lisp_Object killflag)
Jim Blandy's avatar
Jim Blandy committed
241
{
Karl Heuer's avatar
Karl Heuer committed
242 243
  int pos;

244
  CHECK_NUMBER (n);
Jim Blandy's avatar
Jim Blandy committed
245

246
  pos = PT + XINT (n);
Jim Blandy's avatar
Jim Blandy committed
247
  if (NILP (killflag))
Jim Blandy's avatar
Jim Blandy committed
248 249 250
    {
      if (XINT (n) < 0)
	{
Karl Heuer's avatar
Karl Heuer committed
251
	  if (pos < BEGV)
252
	    xsignal0 (Qbeginning_of_buffer);
Jim Blandy's avatar
Jim Blandy committed
253
	  else
Karl Heuer's avatar
Karl Heuer committed
254
	    del_range (pos, PT);
Jim Blandy's avatar
Jim Blandy committed
255 256 257
	}
      else
	{
Karl Heuer's avatar
Karl Heuer committed
258
	  if (pos > ZV)
259
	    xsignal0 (Qend_of_buffer);
Jim Blandy's avatar
Jim Blandy committed
260
	  else
Karl Heuer's avatar
Karl Heuer committed
261
	    del_range (PT, pos);
Jim Blandy's avatar
Jim Blandy committed
262 263 264 265 266 267 268 269 270
	}
    }
  else
    {
      call1 (Qkill_forward_chars, n);
    }
  return Qnil;
}

271
static int nonundocount;
272

273 274
/* Note that there's code in command_loop_1 which typically avoids
   calling this.  */
Jim Blandy's avatar
Jim Blandy committed
275
DEFUN ("self-insert-command", Fself_insert_command, Sself_insert_command, 1, 1, "p",
276
       doc: /* Insert the character you type.
277 278 279 280 281
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
`auto-fill-chars' table has a non-nil value for the inserted character.  */)
Dan Nicolaescu's avatar
Dan Nicolaescu committed
282
  (Lisp_Object n)
Jim Blandy's avatar
Jim Blandy committed
283
{
284
  int remove_boundary = 1;
Dan Nicolaescu's avatar
Dan Nicolaescu committed
285
  CHECK_NUMBER (n);
286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305

  if (!EQ (Vthis_command, current_kboard->Vlast_command))
    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
      && CONSP (current_buffer->undo_list)
      && NILP (XCAR (current_buffer->undo_list)))
    /* Remove the undo_boundary that was just pushed.  */
    current_buffer->undo_list = XCDR (current_buffer->undo_list);
Jim Blandy's avatar
Jim Blandy committed
306 307

  /* Barf if the key that invoked this was not a character.  */
308
  if (!CHARACTERP (last_command_event))
Jim Blandy's avatar
Jim Blandy committed
309
    bitch_at_user ();
310 311
  {
    int character = translate_char (Vtranslation_table_for_input,
312
				    XINT (last_command_event));
313
    if (XINT (n) >= 2 && NILP (current_buffer->overwrite_mode))
Jim Blandy's avatar
Jim Blandy committed
314
      {
315 316 317 318 319 320
	XSETFASTINT (n, XFASTINT (n) - 2);
	/* The first one might want to expand an abbrev.  */
	internal_self_insert (character, 1);
	/* The bulk of the copies of this char can be inserted simply.
	   We don't have to handle a user-specified face specially
	   because it will get inherited from the first char inserted.  */
321
	Finsert_char (make_number (character), n, Qt);
322 323
	/* The last one might want to auto-fill.  */
	internal_self_insert (character, 0);
Jim Blandy's avatar
Jim Blandy committed
324
      }
325 326 327
    else
      while (XINT (n) > 0)
	{
328
	  int val;
329 330
	  /* Ok since old and new vals both nonneg */
	  XSETFASTINT (n, XFASTINT (n) - 1);
331 332 333 334
	  val = internal_self_insert (character, XFASTINT (n) != 0);
	  if (val == 2)
	    nonundocount = 0;
	  frame_make_pointer_invisible ();
335 336
	}
  }
Jim Blandy's avatar
Jim Blandy committed
337 338 339 340

  return Qnil;
}

Karl Heuer's avatar
Karl Heuer committed
341
/* Insert character C.  If NOAUTOFILL is nonzero, don't do autofill
342 343 344
   even if it is enabled.

   If this insertion is suitable for direct output (completely simple),
345 346
   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.  */
347

Stefan Monnier's avatar
Stefan Monnier committed
348 349
static Lisp_Object Qexpand_abbrev;

Andreas Schwab's avatar
Andreas Schwab committed
350
int
351
internal_self_insert (int c, int noautofill)
Jim Blandy's avatar
Jim Blandy committed
352 353 354 355
{
  int hairy = 0;
  Lisp_Object tem;
  register enum syntaxcode synt;
356
  Lisp_Object overwrite, string;
Karl Heuer's avatar
Karl Heuer committed
357 358 359
  /* Length of multi-byte form of C.  */
  int len;
  /* Working buffer and pointer for multi-byte form of C.  */
360
  unsigned char str[MAX_MULTIBYTE_LENGTH];
361
  int chars_to_delete = 0;
362
  int spaces_to_insert = 0;
Jim Blandy's avatar
Jim Blandy committed
363

364
  overwrite = current_buffer->overwrite_mode;
365
  if (!NILP (Vbefore_change_functions) || !NILP (Vafter_change_functions))
Jim Blandy's avatar
Jim Blandy committed
366 367
    hairy = 1;

Karl Heuer's avatar
Karl Heuer committed
368 369
  /* At first, get multi-byte form of C in STR.  */
  if (!NILP (current_buffer->enable_multibyte_characters))
370
    {
371
      len = CHAR_STRING (c, str);
372 373 374 375
      if (len == 1)
	/* If C has modifier bits, this makes C an appropriate
           one-byte char.  */
	c = *str;
376
    }
Karl Heuer's avatar
Karl Heuer committed
377
  else
378
    {
379 380 381
      str[0] = (SINGLE_BYTE_CHAR_P (c)
		? c
		: multibyte_char_to_unibyte (c, Qnil));
382 383
      len = 1;
    }
384
  if (!NILP (overwrite)
Karl Heuer's avatar
Karl Heuer committed
385
      && PT < ZV)
Jim Blandy's avatar
Jim Blandy committed
386
    {
Karl Heuer's avatar
Karl Heuer committed
387 388 389 390 391 392 393 394 395
      /* 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.  */

396 397 398 399
      /* This is the character after point.  */
      int c2 = FETCH_CHAR (PT_BYTE);

      /* Column the cursor should be placed at after this insertion.
Karl Heuer's avatar
Karl Heuer committed
400 401 402
         The correct value should be calculated only when necessary.  */
      int target_clm = 0;

403 404 405 406 407
      /* 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.  */
Karl Heuer's avatar
Karl Heuer committed
408 409 410
      if (EQ (overwrite, Qoverwrite_mode_binary)
	  || (c != '\n'
	      && c2 != '\n'
411 412 413
	      && ! (c2 == '\t'
		    && XINT (current_buffer->tab_width) > 0
		    && XFASTINT (current_buffer->tab_width) < 20
414
		    && (target_clm = ((int) current_column () /* iftc */
415
				      + XINT (Fchar_width (make_number (c)))),
416
			target_clm % XFASTINT (current_buffer->tab_width)))))
Karl Heuer's avatar
Karl Heuer committed
417
	{
418
	  int pos = PT;
419
	  int pos_byte = PT_BYTE;
420

Karl Heuer's avatar
Karl Heuer committed
421
	  if (target_clm == 0)
422
	    chars_to_delete = 1;
Karl Heuer's avatar
Karl Heuer committed
423 424 425 426 427 428 429
	  else
	    {
	      /* 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.  */
430 431
	      int actual_clm
		= XFASTINT (Fmove_to_column (make_number (target_clm), Qnil));
Karl Heuer's avatar
Karl Heuer committed
432

433
	      chars_to_delete = PT - pos;
434

Karl Heuer's avatar
Karl Heuer committed
435 436
	      if (actual_clm > target_clm)
		{
437
		  /* We will delete too many columns.  Let's fill columns
Karl Heuer's avatar
Karl Heuer committed
438
		     by spaces so that the remaining text won't move.  */
439
		  spaces_to_insert = actual_clm - target_clm;
Karl Heuer's avatar
Karl Heuer committed
440 441
		}
	    }
442
	  SET_PT_BOTH (pos, pos_byte);
Karl Heuer's avatar
Karl Heuer committed
443 444
	  hairy = 2;
	}
445
      hairy = 2;
Jim Blandy's avatar
Jim Blandy committed
446
    }
447 448 449

  synt = SYNTAX (c);

Jim Blandy's avatar
Jim Blandy committed
450
  if (!NILP (current_buffer->abbrev_mode)
451
      && synt != Sword
Jim Blandy's avatar
Jim Blandy committed
452
      && NILP (current_buffer->read_only)
453 454 455
      && PT > BEGV
      && (!NILP (current_buffer->enable_multibyte_characters)
	  ? SYNTAX (XFASTINT (Fprevious_char ())) == Sword
456
	  : (SYNTAX (UNIBYTE_TO_CHAR (XFASTINT (Fprevious_char ())))
457
	     == Sword)))
Jim Blandy's avatar
Jim Blandy committed
458
    {
459
      int modiff = MODIFF;
460 461
      Lisp_Object sym;

Stefan Monnier's avatar
Stefan Monnier committed
462
      sym = call0 (Qexpand_abbrev);
463

Richard M. Stallman's avatar
Richard M. Stallman committed
464
      /* If we expanded an abbrev which has a hook,
465
	 and the hook has a non-nil `no-self-insert' property,
466
	 return right away--don't really self-insert.  */
467
      if (SYMBOLP (sym) && ! NILP (sym) && ! NILP (XSYMBOL (sym)->function)
468
	  && SYMBOLP (XSYMBOL (sym)->function))
469 470
	{
	  Lisp_Object prop;
471
	  prop = Fget (XSYMBOL (sym)->function, intern ("no-self-insert"));
472
	  if (! NILP (prop))
473
	    return 1;
474 475
	}

476
      if (MODIFF != modiff)
477
	hairy = 2;
Jim Blandy's avatar
Jim Blandy committed
478
    }
479

480
  if (chars_to_delete)
481
    {
482
      string = make_string_from_bytes (str, 1, len);
483 484 485 486 487 488 489
      if (spaces_to_insert)
	{
	  tem = Fmake_string (make_number (spaces_to_insert),
			      make_number (' '));
	  string = concat2 (tem, string);
	}

490
      replace_range (PT, PT + chars_to_delete, string, 1, 1, 1);
491
      Fforward_char (make_number (1 + spaces_to_insert));
492 493 494 495
    }
  else
    insert_and_inherit (str, len);

496 497 498
  if ((CHAR_TABLE_P (Vauto_fill_chars)
       ? !NILP (CHAR_TABLE_REF (Vauto_fill_chars, c))
       : (c == ' ' || c == '\n'))
Jim Blandy's avatar
Jim Blandy committed
499
      && !noautofill
500
      && !NILP (current_buffer->auto_fill_function))
Jim Blandy's avatar
Jim Blandy committed
501
    {
502 503
      Lisp_Object tem;

Karl Heuer's avatar
Karl Heuer committed
504
      if (c == '\n')
505 506 507 508
	/* 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);
509
      tem = call0 (current_buffer->auto_fill_function);
510 511
      /* Test PT < ZV in case the auto-fill-function is strange.  */
      if (c == '\n' && PT < ZV)
512
	SET_PT_BOTH (PT + 1, PT_BYTE + 1);
513 514
      if (!NILP (tem))
	hairy = 2;
Jim Blandy's avatar
Jim Blandy committed
515
    }
516 517 518

  /* If previous command specified a face to use, use it.  */
  if (!NILP (Vself_insert_face)
519
      && EQ (current_kboard->Vlast_command, Vself_insert_face_command))
520
    {
521 522
      Fput_text_property (make_number (PT - 1), make_number (PT),
			  Qface, Vself_insert_face, Qnil);
523 524
      Vself_insert_face = Qnil;
    }
525

Jim Blandy's avatar
Jim Blandy committed
526
  if ((synt == Sclose || synt == Smath)
527 528
      && !NILP (Vblink_paren_function) && INTERACTIVE
      && !noautofill)
Jim Blandy's avatar
Jim Blandy committed
529 530
    {
      call0 (Vblink_paren_function);
531
      hairy = 2;
Jim Blandy's avatar
Jim Blandy committed
532 533 534 535 536 537
    }
  return hairy;
}

/* module initialization */

Andreas Schwab's avatar
Andreas Schwab committed
538
void
539
syms_of_cmds (void)
Jim Blandy's avatar
Jim Blandy committed
540
{
Dan Nicolaescu's avatar
Dan Nicolaescu committed
541
  Qkill_backward_chars = intern_c_string ("kill-backward-chars");
Jim Blandy's avatar
Jim Blandy committed
542 543
  staticpro (&Qkill_backward_chars);

Dan Nicolaescu's avatar
Dan Nicolaescu committed
544
  Qkill_forward_chars = intern_c_string ("kill-forward-chars");
Jim Blandy's avatar
Jim Blandy committed
545 546
  staticpro (&Qkill_forward_chars);

Dan Nicolaescu's avatar
Dan Nicolaescu committed
547
  Qoverwrite_mode_binary = intern_c_string ("overwrite-mode-binary");
548
  staticpro (&Qoverwrite_mode_binary);
549

Dan Nicolaescu's avatar
Dan Nicolaescu committed
550
  Qexpand_abbrev = intern_c_string ("expand-abbrev");
Stefan Monnier's avatar
Stefan Monnier committed
551 552
  staticpro (&Qexpand_abbrev);

553
  DEFVAR_LISP ("self-insert-face", &Vself_insert_face,
554 555
	       doc: /* If non-nil, set the face of the next self-inserting character to this.
See also `self-insert-face-command'.  */);
556 557 558
  Vself_insert_face = Qnil;

  DEFVAR_LISP ("self-insert-face-command", &Vself_insert_face_command,
559 560
	       doc: /* This is the command that set up `self-insert-face'.
If `last-command' does not equal this value, we ignore `self-insert-face'.  */);
561 562
  Vself_insert_face_command = Qnil;

Jim Blandy's avatar
Jim Blandy committed
563
  DEFVAR_LISP ("blink-paren-function", &Vblink_paren_function,
564 565
	       doc: /* Function called, if non-nil, whenever a close parenthesis is inserted.
More precisely, a char with closeparen syntax is self-inserted.  */);
Jim Blandy's avatar
Jim Blandy committed
566 567
  Vblink_paren_function = Qnil;

Karl Heuer's avatar
Karl Heuer committed
568
  defsubr (&Sforward_point);
Jim Blandy's avatar
Jim Blandy committed
569 570 571 572 573 574 575 576 577 578
  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
579
void
580
keys_of_cmds (void)
Jim Blandy's avatar
Jim Blandy committed
581 582 583
{
  int n;

584
  nonundocount = 0;
585
  initial_define_key (global_map, Ctl ('I'), "self-insert-command");
Jim Blandy's avatar
Jim Blandy committed
586 587
  for (n = 040; n < 0177; n++)
    initial_define_key (global_map, n, "self-insert-command");
588 589 590 591
#ifdef MSDOS
  for (n = 0200; n < 0240; n++)
    initial_define_key (global_map, n, "self-insert-command");
#endif
592
  for (n = 0240; n < 0400; n++)
593
    initial_define_key (global_map, n, "self-insert-command");
Jim Blandy's avatar
Jim Blandy committed
594 595 596 597 598 599

  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");
}
Kenichi Handa's avatar
Kenichi Handa committed
600 601 602

/* arch-tag: 022ba3cd-67f9-4978-9c5d-7d2b18d8644e
   (do not change this comment) */