/* Simple built-in editing commands.
- Copyright (C) 1985, 1993, 1994, 1995 Free Software Foundation, Inc.
+ Copyright (C) 1985, 93, 94, 95, 1996 Free Software Foundation, Inc.
This file is part of GNU Emacs.
You should have received a copy of the GNU General Public License
along with GNU Emacs; see the file COPYING. If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
+the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA. */
#include <config.h>
extern Lisp_Object Qface;
\f
DEFUN ("forward-char", Fforward_char, Sforward_char, 0, 1, "p",
- "Move point right ARG characters (left if ARG negative).\n\
+ "Move point right N characters (left if N is negative).\n\
On reaching end of buffer, stop and signal error.")
- (arg)
- Lisp_Object arg;
+ (n)
+ Lisp_Object n;
{
- if (NILP (arg))
- XSETFASTINT (arg, 1);
+ if (NILP (n))
+ XSETFASTINT (n, 1);
else
- CHECK_NUMBER (arg, 0);
+ CHECK_NUMBER (n, 0);
- /* This used to just set point to point + XINT (arg), and then check
+ /* 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. */
{
- int new_point = point + XINT (arg);
+ int new_point = point + XINT (n);
if (new_point < BEGV)
{
}
DEFUN ("backward-char", Fbackward_char, Sbackward_char, 0, 1, "p",
- "Move point left ARG characters (right if ARG negative).\n\
+ "Move point left N characters (right if N is negative).\n\
On attempt to pass beginning or end of buffer, stop and signal error.")
- (arg)
- Lisp_Object arg;
+ (n)
+ Lisp_Object n;
{
- if (NILP (arg))
- XSETFASTINT (arg, 1);
+ if (NILP (n))
+ XSETFASTINT (n, 1);
else
- CHECK_NUMBER (arg, 0);
+ CHECK_NUMBER (n, 0);
- XSETINT (arg, - XINT (arg));
- return Fforward_char (arg);
+ XSETINT (n, - XINT (n));
+ return Fforward_char (n);
}
DEFUN ("forward-line", Fforward_line, Sforward_line, 0, 1, "p",
- "Move ARG lines forward (backward if ARG is negative).\n\
-Precisely, if point is on line I, move to the start of line I + ARG.\n\
+ "Move N lines forward (backward if N is negative).\n\
+Precisely, if point is on line I, move to the start of line I + N.\n\
If there isn't room, go as far as possible (no error).\n\
Returns the count of lines left to move. If moving forward,\n\
-that is ARG - number of lines moved; if backward, ARG + number moved.\n\
-With positive ARG, a non-empty line at the end counts as one line\n\
+that is N - number of lines moved; if backward, N + number moved.\n\
+With positive N, a non-empty line at the end counts as one line\n\
successfully moved (for the return value).")
(n)
Lisp_Object n;
DEFUN ("beginning-of-line", Fbeginning_of_line, Sbeginning_of_line,
0, 1, "p",
"Move point to beginning of current line.\n\
-With argument ARG not nil or 1, move forward ARG - 1 lines first.\n\
+With argument N not nil or 1, move forward N - 1 lines first.\n\
If scan reaches end of buffer, stop there without error.")
(n)
Lisp_Object n;
DEFUN ("end-of-line", Fend_of_line, Send_of_line,
0, 1, "p",
"Move point to end of current line.\n\
-With argument ARG not nil or 1, move forward ARG - 1 lines first.\n\
+With argument N not nil or 1, move forward N - 1 lines first.\n\
If scan reaches end of buffer, stop there without error.")
(n)
Lisp_Object n;
}
DEFUN ("delete-char", Fdelete_char, Sdelete_char, 1, 2, "p\nP",
- "Delete the following ARG characters (previous, with negative arg).\n\
+ "Delete the following N characters (previous if N is negative).\n\
Optional second arg KILLFLAG non-nil means kill instead (save in kill ring).\n\
-Interactively, ARG is the prefix arg, and KILLFLAG is set if\n\
-ARG was explicitly specified.")
+Interactively, N is the prefix arg, and KILLFLAG is set if\n\
+N was explicitly specified.")
(n, killflag)
Lisp_Object n, killflag;
{
DEFUN ("delete-backward-char", Fdelete_backward_char, Sdelete_backward_char,
1, 2, "p\nP",
- "Delete the previous ARG characters (following, with negative ARG).\n\
+ "Delete the previous N characters (following if N is negative).\n\
Optional second arg KILLFLAG non-nil means kill instead (save in kill ring).\n\
-Interactively, ARG is the prefix arg, and KILLFLAG is set if\n\
-ARG was explicitly specified.")
+Interactively, N is the prefix arg, and KILLFLAG is set if\n\
+N was explicitly specified.")
(n, killflag)
Lisp_Object n, killflag;
{
+ Lisp_Object value;
+ int deleted_tab = 0;
+ int i;
+
CHECK_NUMBER (n, 0);
- return Fdelete_char (make_number (-XINT (n)), killflag);
+
+ /* See if we are about to delete a tab backwards. */
+ for (i = 0; i < XINT (n); i++)
+ {
+ if (point - i < BEGV)
+ break;
+ if (FETCH_CHAR (point - i) == '\t')
+ {
+ deleted_tab = 1;
+ break;
+ }
+ }
+
+ value = Fdelete_char (make_number (-XINT (n)), killflag);
+
+ /* In overwrite mode, back over columns while clearing them out,
+ unless at end of line. */
+ if (XINT (n) > 0
+ && ! NILP (current_buffer->overwrite_mode)
+ && ! deleted_tab
+ && ! (point == ZV || FETCH_CHAR (point) == '\n'))
+ {
+ Finsert_char (make_number (' '), XINT (n));
+ SET_PT (point - XINT (n));
+ }
+
+ return value;
}
DEFUN ("self-insert-command", Fself_insert_command, Sself_insert_command, 1, 1, "p",
"Insert the character you type.\n\
Whichever character you type to run this command is inserted.")
- (arg)
- Lisp_Object arg;
+ (n)
+ Lisp_Object n;
{
- CHECK_NUMBER (arg, 0);
+ CHECK_NUMBER (n, 0);
/* Barf if the key that invoked this was not a character. */
if (!INTEGERP (last_command_char))
bitch_at_user ();
- else if (XINT (arg) >= 2 && NILP (current_buffer->overwrite_mode))
+ else if (XINT (n) >= 2 && NILP (current_buffer->overwrite_mode))
{
- XSETFASTINT (arg, XFASTINT (arg) - 2);
+ XSETFASTINT (n, XFASTINT (n) - 2);
/* The first one might want to expand an abbrev. */
internal_self_insert (XINT (last_command_char), 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. */
- Finsert_char (last_command_char, arg, Qt);
+ Finsert_char (last_command_char, n, Qt);
/* The last one might want to auto-fill. */
internal_self_insert (XINT (last_command_char), 0);
}
else
- while (XINT (arg) > 0)
+ while (XINT (n) > 0)
{
/* Ok since old and new vals both nonneg */
- XSETFASTINT (arg, XFASTINT (arg) - 1);
- internal_self_insert (XINT (last_command_char), XFASTINT (arg) != 0);
+ XSETFASTINT (n, XFASTINT (n) - 1);
+ internal_self_insert (XINT (last_command_char), XFASTINT (n) != 0);
}
return Qnil;
A value of 2 means this did things that call for an undo boundary. */
internal_self_insert (c1, noautofill)
- char c1;
+ /* This has to be unsigned char; when it is char,
+ some compilers sign-extend it in SYNTAX_ENTRY, despite
+ the casts to unsigned char there. */
+ unsigned char c1;
int noautofill;
{
extern Lisp_Object Fexpand_abbrev ();