1 /* Call a Lisp function interactively.
2 Copyright (C) 1985, 1986, 1993, 1994, 1995 Free Software Foundation, Inc.
4 This file is part of GNU Emacs.
6 GNU Emacs is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 GNU Emacs is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU Emacs; see the file COPYING. If not, write to
18 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
29 extern char *index ();
31 int current_prefix_partial
;
32 Lisp_Object Vprefix_arg
, Vcurrent_prefix_arg
, Qminus
, Qplus
;
33 Lisp_Object Qcall_interactively
;
34 Lisp_Object Vcommand_history
;
36 Lisp_Object Vcommand_debug_status
, Qcommand_debug_status
;
37 Lisp_Object Qenable_recursive_minibuffers
;
39 /* Non-nil means treat the mark as active
40 even if mark_active is 0. */
41 Lisp_Object Vmark_even_if_inactive
;
43 Lisp_Object Vmouse_leave_buffer_hook
, Qmouse_leave_buffer_hook
;
46 static Lisp_Object preserved_fns
;
48 /* Marker used within call-interactively to refer to point. */
49 static Lisp_Object point_marker
;
56 if (!current_prefix_partial
)
58 current_kboard
->prefix_factor
= Qnil
;
59 current_kboard
->prefix_value
= Qnil
;
60 current_kboard
->prefix_sign
= 1;
61 current_kboard
->prefix_partial
= 0;
66 finalize_prefix_arg ()
68 if (!NILP (current_kboard
->prefix_factor
))
69 Vprefix_arg
= Fcons (current_kboard
->prefix_factor
, Qnil
);
70 else if (NILP (current_kboard
->prefix_value
))
71 Vprefix_arg
= (current_kboard
->prefix_sign
> 0 ? Qnil
: Qminus
);
72 else if (current_kboard
->prefix_sign
> 0)
73 Vprefix_arg
= current_kboard
->prefix_value
;
75 XSETINT (Vprefix_arg
, -XINT (current_kboard
->prefix_value
));
76 current_kboard
->prefix_partial
= 0;
80 describe_prefix_arg ()
82 if (INTEGERP (Vprefix_arg
))
83 message ("Arg: %d", Vprefix_arg
);
84 else if (CONSP (Vprefix_arg
))
85 message ("Arg: [%d]", XCONS (Vprefix_arg
)->car
);
86 else if (EQ (Vprefix_arg
, Qminus
))
91 /* This comment supplies the doc string for interactive,
92 for make-docfile to see. We cannot put this in the real DEFUN
93 due to limits in the Unix cpp.
95 DEFUN ("interactive", Ffoo, Sfoo, 0, 0, 0,
96 "Specify a way of parsing arguments for interactive use of a function.\n\
98 (defun foo (arg) \"Doc string\" (interactive \"p\") ...use arg...)\n\
99 to make ARG be the prefix argument when `foo' is called as a command.\n\
100 The \"call\" to `interactive' is actually a declaration rather than a function;\n\
101 it tells `call-interactively' how to read arguments\n\
102 to pass to the function.\n\
103 When actually called, `interactive' just returns nil.\n\
105 The argument of `interactive' is usually a string containing a code letter\n\
106 followed by a prompt. (Some code letters do not use I/O to get\n\
107 the argument and do not need prompts.) To prompt for multiple arguments,\n\
108 give a code letter, its prompt, a newline, and another code letter, etc.\n\
109 Prompts are passed to format, and may use % escapes to print the\n\
110 arguments that have already been read.\n\
111 If the argument is not a string, it is evaluated to get a list of\n\
112 arguments to pass to the function.\n\
113 Just `(interactive)' means pass no args when calling interactively.\n\
114 \nCode letters available are:\n\
115 a -- Function name: symbol with a function definition.\n\
116 b -- Name of existing buffer.\n\
117 B -- Name of buffer, possibly nonexistent.\n\
119 C -- Command name: symbol with interactive function definition.\n\
120 d -- Value of point as number. Does not do I/O.\n\
121 D -- Directory name.\n\
122 e -- Parametrized event (i.e., one that's a list) that invoked this command.\n\
123 If used more than once, the Nth `e' returns the Nth parameterized event.\n\
124 This skips events that are integers or symbols.\n\
125 f -- Existing file name.\n\
126 F -- Possibly nonexistent file name.\n\
127 k -- Key sequence (downcase the last event if needed to get a definition).\n\
128 K -- Key sequence to be redefined (do not downcase the last event).\n\
129 m -- Value of mark as number. Does not do I/O.\n\
130 n -- Number read using minibuffer.\n\
131 N -- Raw prefix arg, or if none, do like code `n'.\n\
132 p -- Prefix arg converted to number. Does not do I/O.\n\
133 P -- Prefix arg in raw form. Does not do I/O.\n\
134 r -- Region: point and mark as 2 numeric args, smallest first. Does no I/O.\n\
137 v -- Variable name: symbol that is user-variable-p.\n\
138 x -- Lisp expression read but not evaluated.\n\
139 X -- Lisp expression read and evaluated.\n\
140 In addition, if the string begins with `*'\n\
141 then an error is signaled if the buffer is read-only.\n\
142 This happens before reading any arguments.\n\
143 If the string begins with `@', then Emacs searches the key sequence\n\
144 which invoked the command for its first mouse click (or any other\n\
145 event which specifies a window), and selects that window before\n\
146 reading any arguments. You may use both `@' and `*'; they are\n\
147 processed in the order that they appear." */
150 DEFUN ("interactive", Finteractive
, Sinteractive
, 0, UNEVALLED
, 0,
151 0 /* See immediately above */)
158 /* Quotify EXP: if EXP is constant, return it.
159 If EXP is not constant, return (quote EXP). */
162 register Lisp_Object exp
;
164 if (!INTEGERP (exp
) && !STRINGP (exp
)
165 && !NILP (exp
) && !EQ (exp
, Qt
))
166 return Fcons (Qquote
, Fcons (exp
, Qnil
));
171 /* Modify EXP by quotifying each element (except the first). */
176 register Lisp_Object tail
;
177 register struct Lisp_Cons
*ptr
;
178 for (tail
= exp
; CONSP (tail
); tail
= ptr
->cdr
)
181 ptr
->car
= quotify_arg (ptr
->car
);
186 char *callint_argfuns
[]
187 = {"", "point", "mark", "region-beginning", "region-end"};
193 tem
= Fmarker_buffer (current_buffer
->mark
);
194 if (NILP (tem
) || (XBUFFER (tem
) != current_buffer
))
195 error ("The mark is not set now");
196 if (!NILP (Vtransient_mark_mode
) && NILP (Vmark_even_if_inactive
)
197 && NILP (current_buffer
->mark_active
))
198 Fsignal (Qmark_inactive
, Qnil
);
202 DEFUN ("call-interactively", Fcall_interactively
, Scall_interactively
, 1, 2, 0,
203 "Call FUNCTION, reading args according to its interactive calling specs.\n\
204 The function contains a specification of how to do the argument reading.\n\
205 In the case of user-defined functions, this is specified by placing a call\n\
206 to the function `interactive' at the top level of the function body.\n\
207 See `interactive'.\n\
209 Optional second arg RECORD-FLAG non-nil\n\
210 means unconditionally put this command in the command-history.\n\
211 Otherwise, this is done only if an arg is read using the minibuffer.")
213 Lisp_Object function
, record
;
215 Lisp_Object
*args
, *visargs
;
216 unsigned char **argstrings
;
222 int speccount
= specpdl_ptr
- specpdl
;
224 /* The index of the next element of this_command_keys to examine for
225 the 'e' interactive code. */
228 Lisp_Object prefix_arg
;
229 unsigned char *string
;
232 /* If varies[i] > 0, the i'th argument shouldn't just have its value
233 in this call quoted in the command history. It should be
234 recorded as a call to the function named callint_argfuns[varies[i]]. */
242 int arg_from_tty
= 0;
243 struct gcpro gcpro1
, gcpro2
, gcpro3
, gcpro4
;
245 /* Save this now, since use of minibuffer will clobber it. */
246 prefix_arg
= Vcurrent_prefix_arg
;
250 if (SYMBOLP (function
))
251 enable
= Fget (function
, Qenable_recursive_minibuffers
);
253 fun
= indirect_function (function
);
258 /* Decode the kind of function. Either handle it and return,
259 or go to `lose' if not interactive, or go to `retry'
260 to specify a different function, or set either STRING or SPECS. */
264 string
= (unsigned char *) XSUBR (fun
)->prompt
;
268 function
= wrong_type_argument (Qcommandp
, function
);
271 if ((EMACS_INT
) string
== 1)
272 /* Let SPECS (which is nil) be used as the args. */
275 else if (COMPILEDP (fun
))
277 if ((XVECTOR (fun
)->size
& PSEUDOVECTOR_SIZE_MASK
) <= COMPILED_INTERACTIVE
)
279 specs
= XVECTOR (fun
)->contents
[COMPILED_INTERACTIVE
];
281 else if (!CONSP (fun
))
283 else if (funcar
= Fcar (fun
), EQ (funcar
, Qautoload
))
285 GCPRO2 (function
, prefix_arg
);
286 do_autoload (fun
, function
);
290 else if (EQ (funcar
, Qlambda
))
292 specs
= Fassq (Qinteractive
, Fcdr (Fcdr (fun
)));
295 specs
= Fcar (Fcdr (specs
));
297 else if (EQ (funcar
, Qmocklisp
))
302 return ml_apply (fun
, Qinteractive
);
307 /* If either specs or string is set to a string, use it. */
310 /* Make a copy of string so that if a GC relocates specs,
311 `string' will still be valid. */
312 string
= (unsigned char *) alloca (XSTRING (specs
)->size
+ 1);
313 bcopy (XSTRING (specs
)->data
, string
, XSTRING (specs
)->size
+ 1);
315 else if (string
== 0)
320 /* Compute the arg values using the user's expression. */
321 specs
= Feval (specs
);
322 if (i
!= num_input_chars
|| !NILP (record
))
324 /* We should record this command on the command history. */
325 Lisp_Object values
, car
;
326 /* Make a copy of the list of values, for the command history,
327 and turn them into things we can eval. */
328 values
= quotify_args (Fcopy_sequence (specs
));
329 /* If the list of args was produced with an explicit call to `list',
330 look for elements that were computed with (region-beginning)
331 or (region-end), and put those expressions into VALUES
332 instead of the present values. */
336 Lisp_Object intail
, valtail
;
337 for (intail
= Fcdr (input
), valtail
= values
;
339 intail
= Fcdr (intail
), valtail
= Fcdr (valtail
))
345 Lisp_Object presflag
;
346 presflag
= Fmemq (Fcar (elt
), preserved_fns
);
347 if (!NILP (presflag
))
348 Fsetcar (valtail
, Fcar (intail
));
353 = Fcons (Fcons (function
, values
), Vcommand_history
);
358 return apply1 (function
, specs
);
361 /* Here if function specifies a string to control parsing the defaults */
363 /* Set next_event to point to the first event with parameters. */
364 for (next_event
= 0; next_event
< this_command_key_count
; next_event
++)
365 if (EVENT_HAS_PARAMETERS
366 (XVECTOR (this_command_keys
)->contents
[next_event
]))
369 /* Handle special starting chars `*' and `@'. Also `-'. */
370 /* Note that `+' is reserved for user extensions. */
374 error ("`+' is not used in `interactive' for ordinary commands");
375 else if (*string
== '*')
378 if (!NILP (current_buffer
->read_only
))
379 Fbarf_if_buffer_read_only ();
381 /* Ignore this for semi-compatibility with Lucid. */
382 else if (*string
== '-')
384 else if (*string
== '@')
388 event
= XVECTOR (this_command_keys
)->contents
[next_event
];
389 if (EVENT_HAS_PARAMETERS (event
)
390 && (event
= XCONS (event
)->car
, CONSP (event
))
391 && (event
= XCONS (event
)->car
, CONSP (event
))
392 && (event
= XCONS (event
)->car
), WINDOWP (event
))
394 if (MINI_WINDOW_P (XWINDOW (event
))
395 && ! (minibuf_level
> 0 && EQ (event
, minibuf_window
)))
396 error ("Attempt to select inactive minibuffer window");
398 /* If the current buffer wants to clean up, let it. */
399 if (!NILP (Vmouse_leave_buffer_hook
))
400 call1 (Vrun_hooks
, Qmouse_leave_buffer_hook
);
402 Fselect_window (event
);
409 /* Count the number of arguments the interactive spec would have
410 us give to the function. */
412 for (j
= 0; *tem
; j
++)
414 /* 'r' specifications ("point and mark as 2 numeric args")
415 produce *two* arguments. */
416 if (*tem
== 'r') j
++;
417 tem
= (unsigned char *) index (tem
, '\n');
421 tem
= (unsigned char *) "";
425 args
= (Lisp_Object
*) alloca ((count
+ 1) * sizeof (Lisp_Object
));
426 visargs
= (Lisp_Object
*) alloca ((count
+ 1) * sizeof (Lisp_Object
));
427 argstrings
= (unsigned char **) alloca ((count
+ 1) * sizeof (char *));
428 varies
= (int *) alloca ((count
+ 1) * sizeof (int));
430 for (i
= 0; i
< (count
+ 1); i
++)
437 GCPRO4 (prefix_arg
, function
, *args
, *visargs
);
438 gcpro3
.nvars
= (count
+ 1);
439 gcpro4
.nvars
= (count
+ 1);
442 specbind (Qenable_recursive_minibuffers
, Qt
);
445 for (i
= 1; *tem
; i
++)
447 strncpy (prompt1
, tem
+ 1, sizeof prompt1
- 1);
448 prompt1
[sizeof prompt1
- 1] = 0;
449 tem1
= index (prompt1
, '\n');
451 /* Fill argstrings with a vector of C strings
452 corresponding to the Lisp strings in visargs. */
453 for (j
= 1; j
< i
; j
++)
455 = EQ (visargs
[j
], Qnil
)
456 ? (unsigned char *) ""
457 : XSTRING (visargs
[j
])->data
;
459 doprnt (prompt
, sizeof prompt
, prompt1
, 0, j
- 1, argstrings
+ 1);
463 case 'a': /* Symbol defined as a function */
464 visargs
[i
] = Fcompleting_read (build_string (prompt
),
465 Vobarray
, Qfboundp
, Qt
, Qnil
, Qnil
);
466 /* Passing args[i] directly stimulates compiler bug */
468 args
[i
] = Fintern (teml
, Qnil
);
471 case 'b': /* Name of existing buffer */
472 args
[i
] = Fcurrent_buffer ();
473 if (EQ (selected_window
, minibuf_window
))
474 args
[i
] = Fother_buffer (args
[i
], Qnil
);
475 args
[i
] = Fread_buffer (build_string (prompt
), args
[i
], Qt
);
478 case 'B': /* Name of buffer, possibly nonexistent */
479 args
[i
] = Fread_buffer (build_string (prompt
),
480 Fother_buffer (Fcurrent_buffer (), Qnil
),
484 case 'c': /* Character */
486 args
[i
] = Fread_char ();
487 /* Passing args[i] directly stimulates compiler bug */
489 visargs
[i
] = Fchar_to_string (teml
);
492 case 'C': /* Command: symbol with interactive function */
493 visargs
[i
] = Fcompleting_read (build_string (prompt
),
494 Vobarray
, Qcommandp
, Qt
, Qnil
, Qnil
);
495 /* Passing args[i] directly stimulates compiler bug */
497 args
[i
] = Fintern (teml
, Qnil
);
500 case 'd': /* Value of point. Does not do I/O. */
501 Fset_marker (point_marker
, make_number (PT
), Qnil
);
502 args
[i
] = point_marker
;
503 /* visargs[i] = Qnil; */
507 case 'D': /* Directory name. */
508 args
[i
] = Fread_file_name (build_string (prompt
), Qnil
,
509 current_buffer
->directory
, Qlambda
, Qnil
);
512 case 'f': /* Existing file name. */
513 args
[i
] = Fread_file_name (build_string (prompt
),
514 Qnil
, Qnil
, Qlambda
, Qnil
);
517 case 'F': /* Possibly nonexistent file name. */
518 args
[i
] = Fread_file_name (build_string (prompt
),
519 Qnil
, Qnil
, Qnil
, Qnil
);
522 case 'k': /* Key sequence. */
523 args
[i
] = Fread_key_sequence (build_string (prompt
), Qnil
, Qnil
, Qnil
);
525 visargs
[i
] = Fkey_description (teml
);
528 case 'K': /* Key sequence to be defined. */
529 args
[i
] = Fread_key_sequence (build_string (prompt
), Qnil
, Qt
, Qnil
);
531 visargs
[i
] = Fkey_description (teml
);
534 case 'e': /* The invoking event. */
535 if (next_event
>= this_command_key_count
)
536 error ("%s must be bound to an event with parameters",
538 ? (char *) XSYMBOL (function
)->name
->data
540 args
[i
] = XVECTOR (this_command_keys
)->contents
[next_event
++];
543 /* Find the next parameterized event. */
544 while (next_event
< this_command_key_count
545 && ! (EVENT_HAS_PARAMETERS
546 (XVECTOR (this_command_keys
)->contents
[next_event
])))
551 case 'm': /* Value of mark. Does not do I/O. */
553 /* visargs[i] = Qnil; */
554 args
[i
] = current_buffer
->mark
;
558 case 'N': /* Prefix arg, else number from minibuffer */
559 if (!NILP (prefix_arg
))
560 goto have_prefix_arg
;
561 case 'n': /* Read number from minibuffer. */
563 args
[i
] = Fread_minibuffer (build_string (prompt
), Qnil
);
564 while (! NUMBERP (args
[i
]));
565 visargs
[i
] = last_minibuf_string
;
568 case 'P': /* Prefix arg in raw form. Does no I/O. */
570 args
[i
] = prefix_arg
;
571 /* visargs[i] = Qnil; */
575 case 'p': /* Prefix arg converted to number. No I/O. */
576 args
[i
] = Fprefix_numeric_value (prefix_arg
);
577 /* visargs[i] = Qnil; */
581 case 'r': /* Region, point and mark as 2 args. */
583 Fset_marker (point_marker
, make_number (PT
), Qnil
);
584 /* visargs[i+1] = Qnil; */
585 foo
= marker_position (current_buffer
->mark
);
586 /* visargs[i] = Qnil; */
587 args
[i
] = point
< foo
? point_marker
: current_buffer
->mark
;
589 args
[++i
] = point
> foo
? point_marker
: current_buffer
->mark
;
593 case 's': /* String read via minibuffer. */
594 args
[i
] = Fread_string (build_string (prompt
), Qnil
, Qnil
);
597 case 'S': /* Any symbol. */
598 visargs
[i
] = Fread_string (build_string (prompt
), Qnil
, Qnil
);
599 /* Passing args[i] directly stimulates compiler bug */
601 args
[i
] = Fintern (teml
, Qnil
);
604 case 'v': /* Variable name: symbol that is
606 args
[i
] = Fread_variable (build_string (prompt
));
607 visargs
[i
] = last_minibuf_string
;
610 case 'x': /* Lisp expression read but not evaluated */
611 args
[i
] = Fread_minibuffer (build_string (prompt
), Qnil
);
612 visargs
[i
] = last_minibuf_string
;
615 case 'X': /* Lisp expression read and evaluated */
616 args
[i
] = Feval_minibuffer (build_string (prompt
), Qnil
);
617 visargs
[i
] = last_minibuf_string
;
620 /* We have a case for `+' so we get an error
621 if anyone tries to define one here. */
624 error ("Invalid control letter `%c' (%03o) in interactive calling string",
631 if (NILP (visargs
[i
]) && STRINGP (args
[i
]))
632 visargs
[i
] = args
[i
];
634 tem
= (unsigned char *) index (tem
, '\n');
636 else tem
= (unsigned char *) "";
638 unbind_to (speccount
, Qnil
);
644 if (arg_from_tty
|| !NILP (record
))
646 visargs
[0] = function
;
647 for (i
= 1; i
< count
+ 1; i
++)
650 visargs
[i
] = Fcons (intern (callint_argfuns
[varies
[i
]]), Qnil
);
652 visargs
[i
] = quotify_arg (args
[i
]);
654 Vcommand_history
= Fcons (Flist (count
+ 1, visargs
),
658 /* If we used a marker to hold point, mark, or an end of the region,
659 temporarily, convert it to an integer now. */
660 for (i
= 1; i
<= count
; i
++)
661 if (varies
[i
] >= 1 && varies
[i
] <= 4)
662 XSETINT (args
[i
], marker_position (args
[i
]));
670 specbind (Qcommand_debug_status
, Qnil
);
672 val
= Ffuncall (count
+ 1, args
);
674 return unbind_to (speccount
, val
);
678 DEFUN ("prefix-numeric-value", Fprefix_numeric_value
, Sprefix_numeric_value
,
680 "Return numeric meaning of raw prefix argument ARG.\n\
681 A raw prefix argument is what you get from `(interactive \"P\")'.\n\
682 Its numeric meaning is what you would get from `(interactive \"p\")'.")
689 XSETFASTINT (val
, 1);
690 else if (EQ (raw
, Qminus
))
692 else if (CONSP (raw
))
693 XSETINT (val
, XINT (XCONS (raw
)->car
));
694 else if (INTEGERP (raw
))
697 XSETFASTINT (val
, 1);
702 DEFUN ("universal-argument", Funiversal_argument
, Suniversal_argument
, 0, 0, "",
703 "Begin a numeric argument for the following command.\n\
704 Digits or minus sign following \\[universal-argument] make up the numeric argument.\n\
705 \\[universal-argument] following the digits or minus sign ends the argument.\n\
706 \\[universal-argument] without digits or minus sign provides 4 as argument.\n\
707 Repeating \\[universal-argument] without digits or minus sign\n\
708 multiplies the argument by 4 each time.")
711 if (!current_prefix_partial
)
714 XSETFASTINT (current_kboard
->prefix_factor
, 4);
715 current_kboard
->prefix_value
= Qnil
;
716 current_kboard
->prefix_sign
= 1;
717 current_kboard
->prefix_partial
= 1;
719 else if (!NILP (current_kboard
->prefix_factor
))
722 XSETINT (current_kboard
->prefix_factor
,
723 XINT (current_kboard
->prefix_factor
) * 4);
724 current_kboard
->prefix_partial
= 1;
728 /* Terminating C-u */
729 finalize_prefix_arg ();
730 describe_prefix_arg ();
734 DEFUN ("negative-argument", Fnegative_argument
, Snegative_argument
, 0, 0, "",
735 "Begin a negative numeric argument for the next command.\n\
736 \\[universal-argument] following digits or minus sign ends the argument.")
739 current_kboard
->prefix_factor
= Qnil
;
740 current_kboard
->prefix_sign
*= -1;
741 current_kboard
->prefix_partial
= 1;
744 DEFUN ("digit-argument", Fdigit_argument
, Sdigit_argument
, 0, 0, "",
745 "Part of the numeric argument for the next command.\n\
746 \\[universal-argument] following digits or minus sign ends the argument.")
750 if (!(INTEGERP (last_command_char
)
751 && (c
= (XINT (last_command_char
) & 0177)) >= '0' && c
<= '9'))
752 error("digit-argument must be bound to a digit key");
753 current_kboard
->prefix_factor
= Qnil
;
754 if (NILP (current_kboard
->prefix_value
))
755 XSETFASTINT (current_kboard
->prefix_value
, 0);
756 XSETINT (current_kboard
->prefix_value
,
757 XINT (current_kboard
->prefix_value
) * 10 + (c
- '0'));
758 current_kboard
->prefix_partial
= 1;
763 point_marker
= Fmake_marker ();
764 staticpro (&point_marker
);
766 preserved_fns
= Fcons (intern ("region-beginning"),
767 Fcons (intern ("region-end"),
768 Fcons (intern ("point"),
769 Fcons (intern ("mark"), Qnil
))));
770 staticpro (&preserved_fns
);
772 Qlist
= intern ("list");
775 Qminus
= intern ("-");
778 Qplus
= intern ("+");
781 Qcall_interactively
= intern ("call-interactively");
782 staticpro (&Qcall_interactively
);
784 Qcommand_debug_status
= intern ("command-debug-status");
785 staticpro (&Qcommand_debug_status
);
787 Qenable_recursive_minibuffers
= intern ("enable-recursive-minibuffers");
788 staticpro (&Qenable_recursive_minibuffers
);
790 Qmouse_leave_buffer_hook
= intern ("mouse-leave-buffer-hook");
791 staticpro (&Qmouse_leave_buffer_hook
);
793 DEFVAR_LISP ("prefix-arg", &Vprefix_arg
,
794 "The value of the prefix argument for the next editing command.\n\
795 It may be a number, or the symbol `-' for just a minus sign as arg,\n\
796 or a list whose car is a number for just one or more C-U's\n\
797 or nil if no argument has been specified.\n\
799 You cannot examine this variable to find the argument for this command\n\
800 since it has been set to nil by the time you can look.\n\
801 Instead, you should use the variable `current-prefix-arg', although\n\
802 normally commands can get this prefix argument with (interactive \"P\").");
805 DEFVAR_LISP ("current-prefix-arg", &Vcurrent_prefix_arg
,
806 "The value of the prefix argument for this editing command.\n\
807 It may be a number, or the symbol `-' for just a minus sign as arg,\n\
808 or a list whose car is a number for just one or more C-U's\n\
809 or nil if no argument has been specified.\n\
810 This is what `(interactive \"P\")' returns.");
811 Vcurrent_prefix_arg
= Qnil
;
813 DEFVAR_LISP ("command-history", &Vcommand_history
,
814 "List of recent commands that read arguments from terminal.\n\
815 Each command is represented as a form to evaluate.");
816 Vcommand_history
= Qnil
;
818 DEFVAR_LISP ("command-debug-status", &Vcommand_debug_status
,
819 "Debugging status of current interactive command.\n\
820 Bound each time `call-interactively' is called;\n\
821 may be set by the debugger as a reminder for itself.");
822 Vcommand_debug_status
= Qnil
;
824 DEFVAR_LISP ("mark-even-if-inactive", &Vmark_even_if_inactive
,
825 "*Non-nil means you can use the mark even when inactive.\n\
826 This option makes a difference in Transient Mark mode.\n\
827 When the option is non-nil, deactivation of the mark\n\
828 turns off region highlighting, but commands that use the mark\n\
829 behave as if the mark were still active.");
830 Vmark_even_if_inactive
= Qnil
;
832 DEFVAR_LISP ("mouse-leave-buffer-hook", &Vmouse_leave_buffer_hook
,
833 "Hook to run when about to switch windows with a mouse command.\n\
834 Its purpose is to give temporary modes such as Isearch mode\n\
835 a way to turn themselves off when a mouse command switches windows.");
836 Vmouse_leave_buffer_hook
= Qnil
;
838 defsubr (&Sinteractive
);
839 defsubr (&Scall_interactively
);
840 defsubr (&Sprefix_numeric_value
);
841 defsubr (&Suniversal_argument
);
842 defsubr (&Snegative_argument
);
843 defsubr (&Sdigit_argument
);