Commit | Line | Data |
---|---|---|
ec28a64d MB |
1 | /* Call a Lisp function interactively. |
2 | Copyright (C) 1985, 1986 Free Software Foundation, Inc. | |
3 | ||
4 | This file is part of GNU Emacs. | |
5 | ||
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 1, or (at your option) | |
9 | any later version. | |
10 | ||
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. | |
15 | ||
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. */ | |
19 | ||
20 | ||
21 | #include "config.h" | |
22 | #include "lisp.h" | |
23 | #include "buffer.h" | |
24 | #include "commands.h" | |
760cbdd3 | 25 | #include "keyboard.h" |
ec28a64d MB |
26 | #include "window.h" |
27 | #include "mocklisp.h" | |
28 | ||
29 | extern char *index (); | |
30 | ||
31 | Lisp_Object Vprefix_arg, Vcurrent_prefix_arg, Qminus; | |
32 | Lisp_Object Qcall_interactively; | |
33 | Lisp_Object Vcommand_history; | |
34 | ||
35 | Lisp_Object Vcommand_debug_status, Qcommand_debug_status; | |
36 | ||
37 | /* This comment supplies the doc string for interactive, | |
38 | for make-docfile to see. We cannot put this in the real DEFUN | |
39 | due to limits in the Unix cpp. | |
40 | ||
41 | DEFUN ("interactive", Ffoo, Sfoo, 0, 0, 0, | |
42 | "Specify a way of parsing arguments for interactive use of a function.\n\ | |
43 | For example, write\n\ | |
44 | (defun foo (arg) \"Doc string\" (interactive \"p\") ...use arg...)\n\ | |
45 | to make ARG be the prefix argument when `foo' is called as a command.\n\ | |
46 | The \"call\" to `interactive' is actually a declaration rather than a function;\n\ | |
47 | it tells `call-interactively' how to read arguments\n\ | |
48 | to pass to the function.\n\ | |
49 | When actually called, `interactive' just returns nil.\n\ | |
50 | \n\ | |
51 | The argument of `interactive' is usually a string containing a code letter\n\ | |
52 | followed by a prompt. (Some code letters do not use I/O to get\n\ | |
53 | the argument and do not need prompts.) To prompt for multiple arguments,\n\ | |
54 | give a code letter, its prompt, a newline, and another code letter, etc.\n\ | |
55 | Prompts are passed to format, and may use % escapes to print the\n\ | |
56 | arguments that have already been read.\n\ | |
57 | If the argument is not a string, it is evaluated to get a list of\n\ | |
58 | arguments to pass to the function.\n\ | |
59 | Just `(interactive)' means pass no args when calling interactively.\n\ | |
60 | \nCode letters available are:\n\ | |
61 | a -- Function name: symbol with a function definition.\n\ | |
62 | b -- Name of existing buffer.\n\ | |
63 | B -- Name of buffer, possibly nonexistent.\n\ | |
64 | c -- Character.\n\ | |
65 | C -- Command name: symbol with interactive function definition.\n\ | |
66 | d -- Value of point as number. Does not do I/O.\n\ | |
67 | D -- Directory name.\n\ | |
ec28a64d MB |
68 | f -- Existing file name.\n\ |
69 | F -- Possibly nonexistent file name.\n\ | |
70 | k -- Key sequence (string).\n\ | |
63007de2 | 71 | K -- Mouse click that invoked this command - last-command-char.\n\ |
ec28a64d MB |
72 | m -- Value of mark as number. Does not do I/O.\n\ |
73 | n -- Number read using minibuffer.\n\ | |
74 | N -- Prefix arg converted to number, or if none, do like code `n'.\n\ | |
75 | p -- Prefix arg converted to number. Does not do I/O.\n\ | |
76 | P -- Prefix arg in raw form. Does not do I/O.\n\ | |
77 | r -- Region: point and mark as 2 numeric args, smallest first. Does no I/O.\n\ | |
78 | s -- Any string.\n\ | |
79 | S -- Any symbol.\n\ | |
80 | v -- Variable name: symbol that is user-variable-p.\n\ | |
81 | x -- Lisp expression read but not evaluated.\n\ | |
82 | X -- Lisp expression read and evaluated.\n\ | |
83 | In addition, if the string begins with `*'\n\ | |
84 | then an error is signaled if the buffer is read-only.\n\ | |
85 | This happens before reading any arguments.\n\ | |
86 | If the string begins with `@', then the window the mouse is over is selected\n\ | |
87 | before anything else is done. You may use both `@' and `*';\n\ | |
88 | they are processed in the order that they appear." | |
89 | */ | |
90 | ||
91 | /* ARGSUSED */ | |
92 | DEFUN ("interactive", Finteractive, Sinteractive, 0, UNEVALLED, 0, | |
93 | 0 /* See immediately above */) | |
94 | (args) | |
95 | Lisp_Object args; | |
96 | { | |
97 | return Qnil; | |
98 | } | |
99 | ||
100 | /* Quotify EXP: if EXP is constant, return it. | |
101 | If EXP is not constant, return (quote EXP). */ | |
102 | Lisp_Object | |
103 | quotify_arg (exp) | |
104 | register Lisp_Object exp; | |
105 | { | |
106 | if (XTYPE (exp) != Lisp_Int && XTYPE (exp) != Lisp_String | |
265a9e55 | 107 | && !NILP (exp) && !EQ (exp, Qt)) |
ec28a64d MB |
108 | return Fcons (Qquote, Fcons (exp, Qnil)); |
109 | ||
110 | return exp; | |
111 | } | |
112 | ||
113 | /* Modify EXP by quotifying each element (except the first). */ | |
114 | Lisp_Object | |
115 | quotify_args (exp) | |
116 | Lisp_Object exp; | |
117 | { | |
118 | register Lisp_Object tail; | |
119 | register struct Lisp_Cons *ptr; | |
120 | for (tail = exp; CONSP (tail); tail = ptr->cdr) | |
121 | { | |
122 | ptr = XCONS (tail); | |
123 | ptr->car = quotify_arg (ptr->car); | |
124 | } | |
125 | return exp; | |
126 | } | |
127 | ||
128 | char *callint_argfuns[] | |
129 | = {"", "point", "mark", "region-beginning", "region-end"}; | |
130 | ||
131 | static void | |
132 | check_mark () | |
133 | { | |
134 | Lisp_Object tem = Fmarker_buffer (current_buffer->mark); | |
265a9e55 | 135 | if (NILP (tem) || (XBUFFER (tem) != current_buffer)) |
ec28a64d MB |
136 | error ("The mark is not set now"); |
137 | } | |
138 | ||
139 | ||
140 | DEFUN ("call-interactively", Fcall_interactively, Scall_interactively, 1, 2, 0, | |
141 | "Call FUNCTION, reading args according to its interactive calling specs.\n\ | |
142 | The function contains a specification of how to do the argument reading.\n\ | |
143 | In the case of user-defined functions, this is specified by placing a call\n\ | |
144 | to the function `interactive' at the top level of the function body.\n\ | |
145 | See `interactive'.\n\ | |
146 | \n\ | |
147 | Optional second arg RECORD-FLAG non-nil\n\ | |
148 | means unconditionally put this command in the command-history.\n\ | |
149 | Otherwise, this is done only if an arg is read using the minibuffer.") | |
150 | (function, record) | |
151 | Lisp_Object function, record; | |
152 | { | |
153 | Lisp_Object *args, *visargs; | |
154 | unsigned char **argstrings; | |
155 | Lisp_Object fun; | |
156 | Lisp_Object funcar; | |
157 | Lisp_Object specs; | |
158 | Lisp_Object teml; | |
159 | ||
160 | Lisp_Object prefix_arg; | |
161 | unsigned char *string; | |
162 | unsigned char *tem; | |
63007de2 JB |
163 | |
164 | /* If varies[i] > 0, the i'th argument shouldn't just have its value | |
165 | in this call quoted in the command history. It should be | |
166 | recorded as a call to the function named callint_argfuns[varies[i]]. */ | |
ec28a64d | 167 | int *varies; |
63007de2 | 168 | |
ec28a64d MB |
169 | register int i, j; |
170 | int count, foo; | |
171 | char prompt[100]; | |
172 | char prompt1[100]; | |
173 | char *tem1; | |
174 | int arg_from_tty = 0; | |
175 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
176 | ||
177 | /* Save this now, since use ofminibuffer will clobber it. */ | |
178 | prefix_arg = Vcurrent_prefix_arg; | |
179 | ||
180 | retry: | |
181 | ||
63007de2 JB |
182 | for (fun = function; |
183 | XTYPE (fun) == Lisp_Symbol && !EQ (fun, Qunbound); | |
184 | fun = XSYMBOL (fun)->function) | |
185 | ; | |
ec28a64d MB |
186 | |
187 | specs = Qnil; | |
188 | string = 0; | |
189 | ||
190 | /* Decode the kind of function. Either handle it and return, | |
191 | or go to `lose' if not interactive, or go to `retry' | |
192 | to specify a different function, or set either STRING or SPECS. */ | |
193 | ||
194 | if (XTYPE (fun) == Lisp_Subr) | |
195 | { | |
196 | string = (unsigned char *) XSUBR (fun)->prompt; | |
197 | if (!string) | |
198 | { | |
199 | lose: | |
200 | function = wrong_type_argument (Qcommandp, function, 0); | |
201 | goto retry; | |
202 | } | |
203 | if ((int) string == 1) | |
204 | /* Let SPECS (which is nil) be used as the args. */ | |
205 | string = 0; | |
206 | } | |
207 | else if (XTYPE (fun) == Lisp_Compiled) | |
208 | { | |
209 | if (XVECTOR (fun)->size <= COMPILED_INTERACTIVE) | |
210 | goto lose; | |
211 | specs = XVECTOR (fun)->contents[COMPILED_INTERACTIVE]; | |
212 | } | |
213 | else if (!CONSP (fun)) | |
214 | goto lose; | |
215 | else if (funcar = Fcar (fun), EQ (funcar, Qautoload)) | |
216 | { | |
217 | GCPRO2 (function, prefix_arg); | |
218 | do_autoload (fun, function); | |
219 | UNGCPRO; | |
220 | goto retry; | |
221 | } | |
222 | else if (EQ (funcar, Qlambda)) | |
223 | { | |
224 | specs = Fassq (Qinteractive, Fcdr (Fcdr (fun))); | |
265a9e55 | 225 | if (NILP (specs)) |
ec28a64d MB |
226 | goto lose; |
227 | specs = Fcar (Fcdr (specs)); | |
228 | } | |
229 | else if (EQ (funcar, Qmocklisp)) | |
230 | return ml_apply (fun, Qinteractive); | |
231 | else | |
232 | goto lose; | |
233 | ||
234 | if (XTYPE (specs) == Lisp_String) | |
235 | string = XSTRING (specs)->data; | |
236 | else if (string == 0) | |
237 | { | |
238 | i = num_input_chars; | |
239 | specs = Feval (specs); | |
265a9e55 | 240 | if (i != num_input_chars || !NILP (record)) |
ec28a64d MB |
241 | Vcommand_history |
242 | = Fcons (Fcons (function, quotify_args (Fcopy_sequence (specs))), | |
243 | Vcommand_history); | |
244 | return apply1 (function, specs); | |
245 | } | |
246 | ||
247 | /* Here if function specifies a string to control parsing the defaults */ | |
248 | ||
249 | /* Handle special starting chars `*' and `@'. */ | |
250 | while (1) | |
251 | { | |
252 | if (*string == '*') | |
253 | { | |
254 | string++; | |
265a9e55 | 255 | if (!NILP (current_buffer->read_only)) |
ec28a64d MB |
256 | Fbarf_if_buffer_read_only (); |
257 | } | |
258 | else if (*string == '@') | |
259 | { | |
260 | string++; | |
265a9e55 | 261 | if (!NILP (Vmouse_window)) |
ec28a64d MB |
262 | Fselect_window (Vmouse_window); |
263 | } | |
264 | else break; | |
265 | } | |
266 | ||
267 | /* Count the number of arguments the interactive spec would have | |
268 | us give to the function. */ | |
269 | tem = string; | |
270 | for (j = 0; *tem; j++) | |
271 | { | |
272 | /* 'r' specifications ("point and mark as 2 numeric args") | |
273 | produce *two* arguments. */ | |
274 | if (*tem == 'r') j++; | |
275 | tem = (unsigned char *) index (tem, '\n'); | |
276 | if (tem) | |
277 | tem++; | |
278 | else | |
279 | tem = (unsigned char *) ""; | |
280 | } | |
281 | count = j; | |
282 | ||
283 | args = (Lisp_Object *) alloca ((count + 1) * sizeof (Lisp_Object)); | |
284 | visargs = (Lisp_Object *) alloca ((count + 1) * sizeof (Lisp_Object)); | |
285 | argstrings = (unsigned char **) alloca ((count + 1) * sizeof (char *)); | |
286 | varies = (int *) alloca ((count + 1) * sizeof (int)); | |
287 | ||
288 | for (i = 0; i < (count + 1); i++) | |
289 | { | |
290 | args[i] = Qnil; | |
291 | visargs[i] = Qnil; | |
292 | varies[i] = 0; | |
293 | } | |
294 | ||
295 | GCPRO4 (prefix_arg, function, *args, *visargs); | |
296 | gcpro3.nvars = (count + 1); | |
297 | gcpro4.nvars = (count + 1); | |
298 | ||
299 | tem = string; | |
300 | for (i = 1; *tem; i++) | |
301 | { | |
302 | strncpy (prompt1, tem + 1, sizeof prompt1 - 1); | |
303 | prompt1[sizeof prompt1 - 1] = 0; | |
304 | tem1 = index (prompt1, '\n'); | |
305 | if (tem1) *tem1 = 0; | |
306 | /* Fill argstrings with a vector of C strings | |
307 | corresponding to the Lisp strings in visargs. */ | |
308 | for (j = 1; j < i; j++) | |
309 | argstrings[j] | |
310 | = EQ (visargs[j], Qnil) | |
311 | ? (unsigned char *) "" | |
312 | : XSTRING (visargs[j])->data; | |
313 | ||
314 | doprnt (prompt, sizeof prompt, prompt1, 0, j - 1, argstrings + 1); | |
315 | ||
316 | switch (*tem) | |
317 | { | |
318 | case 'a': /* Symbol defined as a function */ | |
319 | visargs[i] = Fcompleting_read (build_string (prompt), | |
320 | Vobarray, Qfboundp, Qt, Qnil, Qnil); | |
321 | /* Passing args[i] directly stimulates compiler bug */ | |
322 | teml = visargs[i]; | |
323 | args[i] = Fintern (teml, Qnil); | |
324 | break; | |
325 | ||
326 | case 'b': /* Name of existing buffer */ | |
327 | args[i] = Fcurrent_buffer (); | |
328 | if (EQ (selected_window, minibuf_window)) | |
329 | args[i] = Fother_buffer (args[i]); | |
330 | args[i] = Fread_buffer (build_string (prompt), args[i], Qt); | |
331 | break; | |
332 | ||
333 | case 'B': /* Name of buffer, possibly nonexistent */ | |
334 | args[i] = Fread_buffer (build_string (prompt), | |
335 | Fother_buffer (Fcurrent_buffer ()), Qnil); | |
336 | break; | |
337 | ||
338 | case 'c': /* Character */ | |
339 | message1 (prompt); | |
340 | args[i] = Fread_char (); | |
341 | /* Passing args[i] directly stimulates compiler bug */ | |
342 | teml = args[i]; | |
343 | visargs[i] = Fchar_to_string (teml); | |
344 | break; | |
345 | ||
346 | case 'C': /* Command: symbol with interactive function */ | |
347 | visargs[i] = Fcompleting_read (build_string (prompt), | |
348 | Vobarray, Qcommandp, Qt, Qnil, Qnil); | |
349 | /* Passing args[i] directly stimulates compiler bug */ | |
350 | teml = visargs[i]; | |
351 | args[i] = Fintern (teml, Qnil); | |
352 | break; | |
353 | ||
354 | case 'd': /* Value of point. Does not do I/O. */ | |
355 | XFASTINT (args[i]) = point; | |
356 | /* visargs[i] = Qnil; */ | |
357 | varies[i] = 1; | |
358 | break; | |
359 | ||
ec28a64d MB |
360 | case 'D': /* Directory name. */ |
361 | args[i] = Fread_file_name (build_string (prompt), Qnil, | |
362 | current_buffer->directory, Qlambda, Qnil); | |
363 | break; | |
364 | ||
365 | case 'f': /* Existing file name. */ | |
366 | args[i] = Fread_file_name (build_string (prompt), | |
367 | Qnil, Qnil, Qlambda, Qnil); | |
368 | break; | |
369 | ||
370 | case 'F': /* Possibly nonexistent file name. */ | |
371 | args[i] = Fread_file_name (build_string (prompt), | |
372 | Qnil, Qnil, Qnil, Qnil); | |
373 | break; | |
374 | ||
375 | case 'k': /* Key sequence (string) */ | |
63007de2 | 376 | args[i] = Fread_key_sequence (build_string (prompt), Qnil); |
ec28a64d MB |
377 | teml = args[i]; |
378 | visargs[i] = Fkey_description (teml); | |
379 | break; | |
380 | ||
63007de2 JB |
381 | case 'K': /* Mouse click. */ |
382 | args[i] = last_command_char; | |
265a9e55 | 383 | if (NILP (Fmouse_click_p (args[i]))) |
63007de2 JB |
384 | error ("%s must be bound to a mouse click.", |
385 | (XTYPE (function) == Lisp_Symbol | |
386 | ? (char *) XSYMBOL (function)->name->data | |
387 | : "Command")); | |
388 | break; | |
389 | ||
ec28a64d MB |
390 | case 'm': /* Value of mark. Does not do I/O. */ |
391 | check_mark (); | |
392 | /* visargs[i] = Qnil; */ | |
393 | XFASTINT (args[i]) = marker_position (current_buffer->mark); | |
394 | varies[i] = 2; | |
395 | break; | |
396 | ||
397 | case 'N': /* Prefix arg, else number from minibuffer */ | |
265a9e55 | 398 | if (!NILP (prefix_arg)) |
ec28a64d MB |
399 | goto have_prefix_arg; |
400 | case 'n': /* Read number from minibuffer. */ | |
401 | do | |
402 | args[i] = Fread_minibuffer (build_string (prompt), Qnil); | |
403 | #ifdef LISP_FLOAT_TYPE | |
404 | while (XTYPE (args[i]) != Lisp_Int | |
405 | && XTYPE (args[i]) != Lisp_Float); | |
406 | #else | |
407 | while (XTYPE (args[i]) != Lisp_Int); | |
408 | #endif | |
409 | visargs[i] = last_minibuf_string; | |
410 | break; | |
411 | ||
412 | case 'P': /* Prefix arg in raw form. Does no I/O. */ | |
413 | have_prefix_arg: | |
414 | args[i] = prefix_arg; | |
415 | /* visargs[i] = Qnil; */ | |
416 | varies[i] = -1; | |
417 | break; | |
418 | ||
419 | case 'p': /* Prefix arg converted to number. No I/O. */ | |
420 | args[i] = Fprefix_numeric_value (prefix_arg); | |
421 | /* visargs[i] = Qnil; */ | |
422 | varies[i] = -1; | |
423 | break; | |
424 | ||
425 | case 'r': /* Region, point and mark as 2 args. */ | |
426 | check_mark (); | |
427 | /* visargs[i+1] = Qnil; */ | |
428 | foo = marker_position (current_buffer->mark); | |
429 | /* visargs[i] = Qnil; */ | |
430 | XFASTINT (args[i]) = point < foo ? point : foo; | |
431 | varies[i] = 3; | |
432 | XFASTINT (args[++i]) = point > foo ? point : foo; | |
433 | varies[i] = 4; | |
434 | break; | |
435 | ||
436 | case 's': /* String read via minibuffer. */ | |
437 | args[i] = Fread_string (build_string (prompt), Qnil); | |
438 | break; | |
439 | ||
440 | case 'S': /* Any symbol. */ | |
441 | visargs[i] = read_minibuf (Vminibuffer_local_ns_map, | |
442 | Qnil, | |
443 | build_string (prompt), | |
444 | 0); | |
445 | /* Passing args[i] directly stimulates compiler bug */ | |
446 | teml = visargs[i]; | |
447 | args[i] = Fintern (teml, Qnil); | |
448 | break; | |
449 | ||
450 | case 'v': /* Variable name: symbol that is | |
451 | user-variable-p. */ | |
452 | args[i] = Fread_variable (build_string (prompt)); | |
453 | visargs[i] = last_minibuf_string; | |
454 | break; | |
455 | ||
456 | case 'x': /* Lisp expression read but not evaluated */ | |
457 | args[i] = Fread_minibuffer (build_string (prompt), Qnil); | |
458 | visargs[i] = last_minibuf_string; | |
459 | break; | |
460 | ||
461 | case 'X': /* Lisp expression read and evaluated */ | |
462 | args[i] = Feval_minibuffer (build_string (prompt), Qnil); | |
463 | visargs[i] = last_minibuf_string; | |
464 | break; | |
465 | ||
466 | default: | |
467 | error ("Invalid control letter \"%c\" (%03o) in interactive calling string", | |
468 | *tem, *tem); | |
469 | } | |
470 | ||
471 | if (varies[i] == 0) | |
472 | arg_from_tty = 1; | |
473 | ||
265a9e55 | 474 | if (NILP (visargs[i]) && XTYPE (args[i]) == Lisp_String) |
ec28a64d MB |
475 | visargs[i] = args[i]; |
476 | ||
477 | tem = (unsigned char *) index (tem, '\n'); | |
478 | if (tem) tem++; | |
479 | else tem = (unsigned char *) ""; | |
480 | } | |
481 | ||
482 | QUIT; | |
483 | ||
484 | args[0] = function; | |
485 | ||
265a9e55 | 486 | if (arg_from_tty || !NILP (record)) |
ec28a64d MB |
487 | { |
488 | visargs[0] = function; | |
63007de2 JB |
489 | for (i = 1; i < count + 1; i++) |
490 | if (varies[i] > 0) | |
ec28a64d MB |
491 | visargs[i] = Fcons (intern (callint_argfuns[varies[i]]), Qnil); |
492 | else | |
493 | visargs[i] = quotify_arg (args[i]); | |
494 | Vcommand_history = Fcons (Flist (count + 1, visargs), | |
495 | Vcommand_history); | |
496 | } | |
497 | ||
498 | { | |
499 | Lisp_Object val; | |
500 | int speccount = specpdl_ptr - specpdl; | |
501 | specbind (Qcommand_debug_status, Qnil); | |
502 | ||
503 | val = Ffuncall (count + 1, args); | |
504 | UNGCPRO; | |
505 | return unbind_to (speccount, val); | |
506 | } | |
507 | } | |
508 | ||
509 | DEFUN ("prefix-numeric-value", Fprefix_numeric_value, Sprefix_numeric_value, | |
510 | 1, 1, 0, | |
511 | "Return numeric meaning of raw prefix argument ARG.\n\ | |
512 | A raw prefix argument is what you get from `(interactive \"P\")'.\n\ | |
513 | Its numeric meaning is what you would get from `(interactive \"p\")'.") | |
514 | (raw) | |
515 | Lisp_Object raw; | |
516 | { | |
517 | Lisp_Object val; | |
518 | ||
519 | /* Tag val as an integer, so the rest of the assignments | |
520 | may use XSETINT. */ | |
521 | XFASTINT (val) = 0; | |
522 | ||
265a9e55 | 523 | if (NILP (raw)) |
ec28a64d MB |
524 | XFASTINT (val) = 1; |
525 | else if (XTYPE (raw) == Lisp_Symbol) | |
526 | XSETINT (val, -1); | |
527 | else if (CONSP (raw)) | |
528 | XSETINT (val, XINT (XCONS (raw)->car)); | |
529 | else if (XTYPE (raw) == Lisp_Int) | |
530 | val = raw; | |
531 | else | |
532 | XFASTINT (val) = 1; | |
533 | ||
534 | return val; | |
535 | } | |
536 | ||
537 | syms_of_callint () | |
538 | { | |
539 | Qminus = intern ("-"); | |
540 | staticpro (&Qminus); | |
541 | ||
542 | Qcall_interactively = intern ("call-interactively"); | |
543 | staticpro (&Qcall_interactively); | |
544 | ||
545 | Qcommand_debug_status = intern ("command-debug-status"); | |
546 | staticpro (&Qcommand_debug_status); | |
547 | ||
548 | DEFVAR_LISP ("prefix-arg", &Vprefix_arg, | |
549 | "The value of the prefix argument for the next editing command.\n\ | |
550 | It may be a number, or the symbol `-' for just a minus sign as arg,\n\ | |
551 | or a list whose car is a number for just one or more C-U's\n\ | |
552 | or nil if no argument has been specified.\n\ | |
553 | \n\ | |
554 | You cannot examine this variable to find the argument for this command\n\ | |
555 | since it has been set to nil by the time you can look.\n\ | |
556 | Instead, you should use the variable `current-prefix-arg', although\n\ | |
557 | normally commands can get this prefix argument with (interactive \"P\")."); | |
558 | Vprefix_arg = Qnil; | |
559 | ||
560 | DEFVAR_LISP ("current-prefix-arg", &Vcurrent_prefix_arg, | |
561 | "The value of the prefix argument for this editing command.\n\ | |
562 | It may be a number, or the symbol `-' for just a minus sign as arg,\n\ | |
563 | or a list whose car is a number for just one or more C-U's\n\ | |
564 | or nil if no argument has been specified.\n\ | |
565 | This is what `(interactive \"P\")' returns."); | |
566 | Vcurrent_prefix_arg = Qnil; | |
567 | ||
568 | DEFVAR_LISP ("command-history", &Vcommand_history, | |
569 | "List of recent commands that read arguments from terminal.\n\ | |
570 | Each command is represented as a form to evaluate."); | |
571 | Vcommand_history = Qnil; | |
572 | ||
573 | DEFVAR_LISP ("command-debug-status", &Vcommand_debug_status, | |
574 | "Debugging status of current interactive command.\n\ | |
575 | Bound each time `call-interactively' is called;\n\ | |
576 | may be set by the debugger as a reminder for itself."); | |
577 | Vcommand_debug_status = Qnil; | |
578 | ||
579 | defsubr (&Sinteractive); | |
580 | defsubr (&Scall_interactively); | |
581 | defsubr (&Sprefix_numeric_value); | |
582 | } |