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ec28a64d | 1 | /* Call a Lisp function interactively. |
46947372 | 2 | Copyright (C) 1985, 1986, 1992 Free Software Foundation, Inc. |
ec28a64d MB |
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; | |
52614803 | 36 | Lisp_Object Qenable_recursive_minibuffers; |
ec28a64d | 37 | |
03e130d5 RS |
38 | Lisp_Object Qlist; |
39 | Lisp_Object preserved_fns; | |
40 | ||
ec28a64d MB |
41 | /* This comment supplies the doc string for interactive, |
42 | for make-docfile to see. We cannot put this in the real DEFUN | |
43 | due to limits in the Unix cpp. | |
44 | ||
45 | DEFUN ("interactive", Ffoo, Sfoo, 0, 0, 0, | |
46 | "Specify a way of parsing arguments for interactive use of a function.\n\ | |
47 | For example, write\n\ | |
48 | (defun foo (arg) \"Doc string\" (interactive \"p\") ...use arg...)\n\ | |
49 | to make ARG be the prefix argument when `foo' is called as a command.\n\ | |
50 | The \"call\" to `interactive' is actually a declaration rather than a function;\n\ | |
51 | it tells `call-interactively' how to read arguments\n\ | |
52 | to pass to the function.\n\ | |
53 | When actually called, `interactive' just returns nil.\n\ | |
54 | \n\ | |
55 | The argument of `interactive' is usually a string containing a code letter\n\ | |
56 | followed by a prompt. (Some code letters do not use I/O to get\n\ | |
57 | the argument and do not need prompts.) To prompt for multiple arguments,\n\ | |
58 | give a code letter, its prompt, a newline, and another code letter, etc.\n\ | |
59 | Prompts are passed to format, and may use % escapes to print the\n\ | |
60 | arguments that have already been read.\n\ | |
61 | If the argument is not a string, it is evaluated to get a list of\n\ | |
62 | arguments to pass to the function.\n\ | |
63 | Just `(interactive)' means pass no args when calling interactively.\n\ | |
64 | \nCode letters available are:\n\ | |
65 | a -- Function name: symbol with a function definition.\n\ | |
66 | b -- Name of existing buffer.\n\ | |
67 | B -- Name of buffer, possibly nonexistent.\n\ | |
68 | c -- Character.\n\ | |
69 | C -- Command name: symbol with interactive function definition.\n\ | |
70 | d -- Value of point as number. Does not do I/O.\n\ | |
71 | D -- Directory name.\n\ | |
bc78232c JB |
72 | e -- Event that invoked this command (value of `last-nonmenu-event').\n\ |
73 | This skips events without parameters.\n\ | |
74 | If used more than once, the Nth 'e' returns the Nth parameterized event.\n\ | |
ec28a64d MB |
75 | f -- Existing file name.\n\ |
76 | F -- Possibly nonexistent file name.\n\ | |
77 | k -- Key sequence (string).\n\ | |
78 | m -- Value of mark as number. Does not do I/O.\n\ | |
79 | n -- Number read using minibuffer.\n\ | |
80 | N -- Prefix arg converted to number, or if none, do like code `n'.\n\ | |
81 | p -- Prefix arg converted to number. Does not do I/O.\n\ | |
82 | P -- Prefix arg in raw form. Does not do I/O.\n\ | |
83 | r -- Region: point and mark as 2 numeric args, smallest first. Does no I/O.\n\ | |
84 | s -- Any string.\n\ | |
85 | S -- Any symbol.\n\ | |
86 | v -- Variable name: symbol that is user-variable-p.\n\ | |
87 | x -- Lisp expression read but not evaluated.\n\ | |
88 | X -- Lisp expression read and evaluated.\n\ | |
89 | In addition, if the string begins with `*'\n\ | |
90 | then an error is signaled if the buffer is read-only.\n\ | |
91 | This happens before reading any arguments.\n\ | |
92 | If the string begins with `@', then the window the mouse is over is selected\n\ | |
93 | before anything else is done. You may use both `@' and `*';\n\ | |
94 | they are processed in the order that they appear." | |
95 | */ | |
96 | ||
97 | /* ARGSUSED */ | |
98 | DEFUN ("interactive", Finteractive, Sinteractive, 0, UNEVALLED, 0, | |
99 | 0 /* See immediately above */) | |
100 | (args) | |
101 | Lisp_Object args; | |
102 | { | |
103 | return Qnil; | |
104 | } | |
105 | ||
106 | /* Quotify EXP: if EXP is constant, return it. | |
107 | If EXP is not constant, return (quote EXP). */ | |
108 | Lisp_Object | |
109 | quotify_arg (exp) | |
110 | register Lisp_Object exp; | |
111 | { | |
112 | if (XTYPE (exp) != Lisp_Int && XTYPE (exp) != Lisp_String | |
265a9e55 | 113 | && !NILP (exp) && !EQ (exp, Qt)) |
ec28a64d MB |
114 | return Fcons (Qquote, Fcons (exp, Qnil)); |
115 | ||
116 | return exp; | |
117 | } | |
118 | ||
119 | /* Modify EXP by quotifying each element (except the first). */ | |
120 | Lisp_Object | |
121 | quotify_args (exp) | |
122 | Lisp_Object exp; | |
123 | { | |
124 | register Lisp_Object tail; | |
125 | register struct Lisp_Cons *ptr; | |
126 | for (tail = exp; CONSP (tail); tail = ptr->cdr) | |
127 | { | |
128 | ptr = XCONS (tail); | |
129 | ptr->car = quotify_arg (ptr->car); | |
130 | } | |
131 | return exp; | |
132 | } | |
133 | ||
134 | char *callint_argfuns[] | |
135 | = {"", "point", "mark", "region-beginning", "region-end"}; | |
136 | ||
137 | static void | |
138 | check_mark () | |
139 | { | |
140 | Lisp_Object tem = Fmarker_buffer (current_buffer->mark); | |
265a9e55 | 141 | if (NILP (tem) || (XBUFFER (tem) != current_buffer)) |
ec28a64d MB |
142 | error ("The mark is not set now"); |
143 | } | |
144 | ||
145 | ||
146 | DEFUN ("call-interactively", Fcall_interactively, Scall_interactively, 1, 2, 0, | |
147 | "Call FUNCTION, reading args according to its interactive calling specs.\n\ | |
148 | The function contains a specification of how to do the argument reading.\n\ | |
149 | In the case of user-defined functions, this is specified by placing a call\n\ | |
150 | to the function `interactive' at the top level of the function body.\n\ | |
151 | See `interactive'.\n\ | |
152 | \n\ | |
153 | Optional second arg RECORD-FLAG non-nil\n\ | |
154 | means unconditionally put this command in the command-history.\n\ | |
155 | Otherwise, this is done only if an arg is read using the minibuffer.") | |
156 | (function, record) | |
157 | Lisp_Object function, record; | |
158 | { | |
159 | Lisp_Object *args, *visargs; | |
160 | unsigned char **argstrings; | |
161 | Lisp_Object fun; | |
162 | Lisp_Object funcar; | |
163 | Lisp_Object specs; | |
164 | Lisp_Object teml; | |
52614803 RS |
165 | Lisp_Object enable; |
166 | int speccount = specpdl_ptr - specpdl; | |
ec28a64d | 167 | |
bc78232c JB |
168 | /* The index of the next element of this_command_keys to examine for |
169 | the 'e' interactive code. */ | |
170 | int next_event = 0; | |
171 | ||
ec28a64d MB |
172 | Lisp_Object prefix_arg; |
173 | unsigned char *string; | |
174 | unsigned char *tem; | |
63007de2 JB |
175 | |
176 | /* If varies[i] > 0, the i'th argument shouldn't just have its value | |
177 | in this call quoted in the command history. It should be | |
178 | recorded as a call to the function named callint_argfuns[varies[i]]. */ | |
ec28a64d | 179 | int *varies; |
63007de2 | 180 | |
ec28a64d MB |
181 | register int i, j; |
182 | int count, foo; | |
183 | char prompt[100]; | |
184 | char prompt1[100]; | |
185 | char *tem1; | |
186 | int arg_from_tty = 0; | |
187 | struct gcpro gcpro1, gcpro2, gcpro3, gcpro4; | |
188 | ||
e5d77022 | 189 | /* Save this now, since use of minibuffer will clobber it. */ |
ec28a64d MB |
190 | prefix_arg = Vcurrent_prefix_arg; |
191 | ||
46947372 | 192 | retry: |
ec28a64d | 193 | |
afa4c0f3 JB |
194 | if (XTYPE (function) == Lisp_Symbol) |
195 | enable = Fget (function, Qenable_recursive_minibuffers); | |
52614803 | 196 | |
ffd56f97 | 197 | fun = indirect_function (function); |
ec28a64d MB |
198 | |
199 | specs = Qnil; | |
200 | string = 0; | |
201 | ||
202 | /* Decode the kind of function. Either handle it and return, | |
203 | or go to `lose' if not interactive, or go to `retry' | |
204 | to specify a different function, or set either STRING or SPECS. */ | |
205 | ||
206 | if (XTYPE (fun) == Lisp_Subr) | |
207 | { | |
208 | string = (unsigned char *) XSUBR (fun)->prompt; | |
209 | if (!string) | |
210 | { | |
211 | lose: | |
212 | function = wrong_type_argument (Qcommandp, function, 0); | |
213 | goto retry; | |
214 | } | |
215 | if ((int) string == 1) | |
216 | /* Let SPECS (which is nil) be used as the args. */ | |
217 | string = 0; | |
218 | } | |
219 | else if (XTYPE (fun) == Lisp_Compiled) | |
220 | { | |
221 | if (XVECTOR (fun)->size <= COMPILED_INTERACTIVE) | |
222 | goto lose; | |
223 | specs = XVECTOR (fun)->contents[COMPILED_INTERACTIVE]; | |
224 | } | |
225 | else if (!CONSP (fun)) | |
226 | goto lose; | |
227 | else if (funcar = Fcar (fun), EQ (funcar, Qautoload)) | |
228 | { | |
229 | GCPRO2 (function, prefix_arg); | |
230 | do_autoload (fun, function); | |
231 | UNGCPRO; | |
232 | goto retry; | |
233 | } | |
234 | else if (EQ (funcar, Qlambda)) | |
235 | { | |
236 | specs = Fassq (Qinteractive, Fcdr (Fcdr (fun))); | |
265a9e55 | 237 | if (NILP (specs)) |
ec28a64d MB |
238 | goto lose; |
239 | specs = Fcar (Fcdr (specs)); | |
240 | } | |
241 | else if (EQ (funcar, Qmocklisp)) | |
242 | return ml_apply (fun, Qinteractive); | |
243 | else | |
244 | goto lose; | |
245 | ||
46947372 | 246 | /* If either specs or string is set to a string, use it. */ |
ec28a64d | 247 | if (XTYPE (specs) == Lisp_String) |
46947372 JB |
248 | { |
249 | /* Make a copy of string so that if a GC relocates specs, | |
250 | `string' will still be valid. */ | |
e5d77022 | 251 | string = (unsigned char *) alloca (XSTRING (specs)->size + 1); |
46947372 JB |
252 | bcopy (XSTRING (specs)->data, string, XSTRING (specs)->size + 1); |
253 | } | |
ec28a64d MB |
254 | else if (string == 0) |
255 | { | |
03e130d5 | 256 | Lisp_Object input; |
ec28a64d | 257 | i = num_input_chars; |
03e130d5 RS |
258 | input = specs; |
259 | /* Compute the arg values using the user's expression. */ | |
ec28a64d | 260 | specs = Feval (specs); |
265a9e55 | 261 | if (i != num_input_chars || !NILP (record)) |
03e130d5 RS |
262 | { |
263 | /* We should record this command on the command history. */ | |
264 | Lisp_Object values, car; | |
265 | /* Make a copy of the list of values, for the command history, | |
266 | and turn them into things we can eval. */ | |
267 | values = quotify_args (Fcopy_sequence (specs)); | |
268 | /* If the list of args was produced with an explicit call to `list', | |
269 | look for elements that were computed with (region-beginning) | |
270 | or (region-end), and put those expressions into VALUES | |
271 | instead of the present values. */ | |
272 | car = Fcar (input); | |
273 | if (EQ (car, Qlist)) | |
274 | { | |
275 | Lisp_Object intail, valtail; | |
276 | for (intail = Fcdr (input), valtail = values; | |
277 | CONSP (valtail); | |
278 | intail = Fcdr (intail), valtail = Fcdr (valtail)) | |
279 | { | |
280 | Lisp_Object elt; | |
281 | elt = Fcar (intail); | |
282 | if (CONSP (elt)) | |
283 | { | |
284 | Lisp_Object presflag; | |
285 | presflag = Fmemq (Fcar (elt), preserved_fns); | |
286 | if (!NILP (presflag)) | |
287 | Fsetcar (valtail, Fcar (intail)); | |
288 | } | |
289 | } | |
290 | } | |
291 | Vcommand_history | |
292 | = Fcons (Fcons (function, values), Vcommand_history); | |
293 | } | |
ec28a64d MB |
294 | return apply1 (function, specs); |
295 | } | |
296 | ||
297 | /* Here if function specifies a string to control parsing the defaults */ | |
298 | ||
299 | /* Handle special starting chars `*' and `@'. */ | |
300 | while (1) | |
301 | { | |
302 | if (*string == '*') | |
303 | { | |
304 | string++; | |
265a9e55 | 305 | if (!NILP (current_buffer->read_only)) |
ec28a64d MB |
306 | Fbarf_if_buffer_read_only (); |
307 | } | |
308 | else if (*string == '@') | |
309 | { | |
310 | string++; | |
265a9e55 | 311 | if (!NILP (Vmouse_window)) |
ec28a64d MB |
312 | Fselect_window (Vmouse_window); |
313 | } | |
314 | else break; | |
315 | } | |
316 | ||
317 | /* Count the number of arguments the interactive spec would have | |
318 | us give to the function. */ | |
319 | tem = string; | |
320 | for (j = 0; *tem; j++) | |
321 | { | |
322 | /* 'r' specifications ("point and mark as 2 numeric args") | |
323 | produce *two* arguments. */ | |
324 | if (*tem == 'r') j++; | |
325 | tem = (unsigned char *) index (tem, '\n'); | |
326 | if (tem) | |
327 | tem++; | |
328 | else | |
329 | tem = (unsigned char *) ""; | |
330 | } | |
331 | count = j; | |
332 | ||
333 | args = (Lisp_Object *) alloca ((count + 1) * sizeof (Lisp_Object)); | |
334 | visargs = (Lisp_Object *) alloca ((count + 1) * sizeof (Lisp_Object)); | |
335 | argstrings = (unsigned char **) alloca ((count + 1) * sizeof (char *)); | |
336 | varies = (int *) alloca ((count + 1) * sizeof (int)); | |
337 | ||
338 | for (i = 0; i < (count + 1); i++) | |
339 | { | |
340 | args[i] = Qnil; | |
341 | visargs[i] = Qnil; | |
342 | varies[i] = 0; | |
343 | } | |
344 | ||
345 | GCPRO4 (prefix_arg, function, *args, *visargs); | |
346 | gcpro3.nvars = (count + 1); | |
347 | gcpro4.nvars = (count + 1); | |
348 | ||
52614803 RS |
349 | if (!NILP (enable)) |
350 | specbind (Qenable_recursive_minibuffers, Qt); | |
351 | ||
ec28a64d | 352 | tem = string; |
46947372 | 353 | for (i = 1; *tem; i++) |
ec28a64d MB |
354 | { |
355 | strncpy (prompt1, tem + 1, sizeof prompt1 - 1); | |
356 | prompt1[sizeof prompt1 - 1] = 0; | |
357 | tem1 = index (prompt1, '\n'); | |
358 | if (tem1) *tem1 = 0; | |
359 | /* Fill argstrings with a vector of C strings | |
360 | corresponding to the Lisp strings in visargs. */ | |
361 | for (j = 1; j < i; j++) | |
362 | argstrings[j] | |
363 | = EQ (visargs[j], Qnil) | |
364 | ? (unsigned char *) "" | |
46947372 | 365 | : XSTRING (visargs[j])->data; |
ec28a64d MB |
366 | |
367 | doprnt (prompt, sizeof prompt, prompt1, 0, j - 1, argstrings + 1); | |
368 | ||
369 | switch (*tem) | |
370 | { | |
371 | case 'a': /* Symbol defined as a function */ | |
372 | visargs[i] = Fcompleting_read (build_string (prompt), | |
373 | Vobarray, Qfboundp, Qt, Qnil, Qnil); | |
374 | /* Passing args[i] directly stimulates compiler bug */ | |
375 | teml = visargs[i]; | |
376 | args[i] = Fintern (teml, Qnil); | |
377 | break; | |
378 | ||
379 | case 'b': /* Name of existing buffer */ | |
380 | args[i] = Fcurrent_buffer (); | |
381 | if (EQ (selected_window, minibuf_window)) | |
9262fcb6 | 382 | args[i] = Fother_buffer (args[i], Qnil); |
ec28a64d MB |
383 | args[i] = Fread_buffer (build_string (prompt), args[i], Qt); |
384 | break; | |
385 | ||
386 | case 'B': /* Name of buffer, possibly nonexistent */ | |
387 | args[i] = Fread_buffer (build_string (prompt), | |
9262fcb6 RS |
388 | Fother_buffer (Fcurrent_buffer (), Qnil), |
389 | Qnil); | |
ec28a64d MB |
390 | break; |
391 | ||
392 | case 'c': /* Character */ | |
393 | message1 (prompt); | |
394 | args[i] = Fread_char (); | |
395 | /* Passing args[i] directly stimulates compiler bug */ | |
396 | teml = args[i]; | |
397 | visargs[i] = Fchar_to_string (teml); | |
398 | break; | |
399 | ||
400 | case 'C': /* Command: symbol with interactive function */ | |
401 | visargs[i] = Fcompleting_read (build_string (prompt), | |
402 | Vobarray, Qcommandp, Qt, Qnil, Qnil); | |
403 | /* Passing args[i] directly stimulates compiler bug */ | |
404 | teml = visargs[i]; | |
405 | args[i] = Fintern (teml, Qnil); | |
406 | break; | |
407 | ||
408 | case 'd': /* Value of point. Does not do I/O. */ | |
409 | XFASTINT (args[i]) = point; | |
410 | /* visargs[i] = Qnil; */ | |
411 | varies[i] = 1; | |
412 | break; | |
413 | ||
ec28a64d MB |
414 | case 'D': /* Directory name. */ |
415 | args[i] = Fread_file_name (build_string (prompt), Qnil, | |
416 | current_buffer->directory, Qlambda, Qnil); | |
417 | break; | |
418 | ||
419 | case 'f': /* Existing file name. */ | |
420 | args[i] = Fread_file_name (build_string (prompt), | |
421 | Qnil, Qnil, Qlambda, Qnil); | |
422 | break; | |
423 | ||
424 | case 'F': /* Possibly nonexistent file name. */ | |
425 | args[i] = Fread_file_name (build_string (prompt), | |
426 | Qnil, Qnil, Qnil, Qnil); | |
427 | break; | |
428 | ||
429 | case 'k': /* Key sequence (string) */ | |
63007de2 | 430 | args[i] = Fread_key_sequence (build_string (prompt), Qnil); |
ec28a64d MB |
431 | teml = args[i]; |
432 | visargs[i] = Fkey_description (teml); | |
433 | break; | |
434 | ||
bc78232c JB |
435 | case 'e': /* The invoking event. */ |
436 | /* Find the next parameterized event. */ | |
437 | while (next_event < this_command_key_count | |
7e6491d3 JB |
438 | && ! (EVENT_HAS_PARAMETERS |
439 | (XVECTOR (this_command_keys)->contents[next_event]))) | |
bc78232c JB |
440 | next_event++; |
441 | if (next_event >= this_command_key_count) | |
442 | error ("%s must be bound to an event with parameters", | |
63007de2 JB |
443 | (XTYPE (function) == Lisp_Symbol |
444 | ? (char *) XSYMBOL (function)->name->data | |
bc78232c | 445 | : "command")); |
7e6491d3 | 446 | args[i] = XVECTOR (this_command_keys)->contents[next_event++]; |
e5d77022 | 447 | varies[i] = -1; |
63007de2 JB |
448 | break; |
449 | ||
ec28a64d MB |
450 | case 'm': /* Value of mark. Does not do I/O. */ |
451 | check_mark (); | |
452 | /* visargs[i] = Qnil; */ | |
453 | XFASTINT (args[i]) = marker_position (current_buffer->mark); | |
454 | varies[i] = 2; | |
455 | break; | |
456 | ||
457 | case 'N': /* Prefix arg, else number from minibuffer */ | |
265a9e55 | 458 | if (!NILP (prefix_arg)) |
ec28a64d MB |
459 | goto have_prefix_arg; |
460 | case 'n': /* Read number from minibuffer. */ | |
461 | do | |
462 | args[i] = Fread_minibuffer (build_string (prompt), Qnil); | |
4746118a | 463 | while (! NUMBERP (args[i])); |
ec28a64d MB |
464 | visargs[i] = last_minibuf_string; |
465 | break; | |
466 | ||
467 | case 'P': /* Prefix arg in raw form. Does no I/O. */ | |
468 | have_prefix_arg: | |
469 | args[i] = prefix_arg; | |
470 | /* visargs[i] = Qnil; */ | |
471 | varies[i] = -1; | |
472 | break; | |
473 | ||
474 | case 'p': /* Prefix arg converted to number. No I/O. */ | |
475 | args[i] = Fprefix_numeric_value (prefix_arg); | |
476 | /* visargs[i] = Qnil; */ | |
477 | varies[i] = -1; | |
478 | break; | |
479 | ||
480 | case 'r': /* Region, point and mark as 2 args. */ | |
481 | check_mark (); | |
482 | /* visargs[i+1] = Qnil; */ | |
483 | foo = marker_position (current_buffer->mark); | |
484 | /* visargs[i] = Qnil; */ | |
485 | XFASTINT (args[i]) = point < foo ? point : foo; | |
486 | varies[i] = 3; | |
487 | XFASTINT (args[++i]) = point > foo ? point : foo; | |
488 | varies[i] = 4; | |
489 | break; | |
490 | ||
491 | case 's': /* String read via minibuffer. */ | |
492 | args[i] = Fread_string (build_string (prompt), Qnil); | |
493 | break; | |
494 | ||
495 | case 'S': /* Any symbol. */ | |
15c65264 | 496 | visargs[i] = Fread_no_blanks_input (build_string (prompt), Qnil); |
ec28a64d MB |
497 | /* Passing args[i] directly stimulates compiler bug */ |
498 | teml = visargs[i]; | |
499 | args[i] = Fintern (teml, Qnil); | |
500 | break; | |
501 | ||
502 | case 'v': /* Variable name: symbol that is | |
503 | user-variable-p. */ | |
504 | args[i] = Fread_variable (build_string (prompt)); | |
505 | visargs[i] = last_minibuf_string; | |
506 | break; | |
507 | ||
508 | case 'x': /* Lisp expression read but not evaluated */ | |
509 | args[i] = Fread_minibuffer (build_string (prompt), Qnil); | |
510 | visargs[i] = last_minibuf_string; | |
511 | break; | |
512 | ||
513 | case 'X': /* Lisp expression read and evaluated */ | |
514 | args[i] = Feval_minibuffer (build_string (prompt), Qnil); | |
515 | visargs[i] = last_minibuf_string; | |
516 | break; | |
517 | ||
518 | default: | |
519 | error ("Invalid control letter \"%c\" (%03o) in interactive calling string", | |
520 | *tem, *tem); | |
521 | } | |
522 | ||
523 | if (varies[i] == 0) | |
524 | arg_from_tty = 1; | |
525 | ||
265a9e55 | 526 | if (NILP (visargs[i]) && XTYPE (args[i]) == Lisp_String) |
ec28a64d MB |
527 | visargs[i] = args[i]; |
528 | ||
529 | tem = (unsigned char *) index (tem, '\n'); | |
530 | if (tem) tem++; | |
531 | else tem = (unsigned char *) ""; | |
532 | } | |
52614803 | 533 | unbind_to (speccount, Qnil); |
ec28a64d MB |
534 | |
535 | QUIT; | |
536 | ||
537 | args[0] = function; | |
538 | ||
265a9e55 | 539 | if (arg_from_tty || !NILP (record)) |
ec28a64d MB |
540 | { |
541 | visargs[0] = function; | |
63007de2 JB |
542 | for (i = 1; i < count + 1; i++) |
543 | if (varies[i] > 0) | |
ec28a64d MB |
544 | visargs[i] = Fcons (intern (callint_argfuns[varies[i]]), Qnil); |
545 | else | |
546 | visargs[i] = quotify_arg (args[i]); | |
547 | Vcommand_history = Fcons (Flist (count + 1, visargs), | |
548 | Vcommand_history); | |
549 | } | |
550 | ||
551 | { | |
552 | Lisp_Object val; | |
ec28a64d MB |
553 | specbind (Qcommand_debug_status, Qnil); |
554 | ||
555 | val = Ffuncall (count + 1, args); | |
556 | UNGCPRO; | |
557 | return unbind_to (speccount, val); | |
558 | } | |
559 | } | |
560 | ||
561 | DEFUN ("prefix-numeric-value", Fprefix_numeric_value, Sprefix_numeric_value, | |
562 | 1, 1, 0, | |
563 | "Return numeric meaning of raw prefix argument ARG.\n\ | |
564 | A raw prefix argument is what you get from `(interactive \"P\")'.\n\ | |
565 | Its numeric meaning is what you would get from `(interactive \"p\")'.") | |
566 | (raw) | |
567 | Lisp_Object raw; | |
568 | { | |
569 | Lisp_Object val; | |
570 | ||
571 | /* Tag val as an integer, so the rest of the assignments | |
572 | may use XSETINT. */ | |
573 | XFASTINT (val) = 0; | |
574 | ||
265a9e55 | 575 | if (NILP (raw)) |
ec28a64d | 576 | XFASTINT (val) = 1; |
fd5285f3 | 577 | else if (EQ (raw, Qminus)) |
ec28a64d MB |
578 | XSETINT (val, -1); |
579 | else if (CONSP (raw)) | |
580 | XSETINT (val, XINT (XCONS (raw)->car)); | |
581 | else if (XTYPE (raw) == Lisp_Int) | |
582 | val = raw; | |
583 | else | |
584 | XFASTINT (val) = 1; | |
585 | ||
586 | return val; | |
587 | } | |
588 | ||
589 | syms_of_callint () | |
590 | { | |
03e130d5 RS |
591 | preserved_fns = Fcons (intern ("region-beginning"), |
592 | Fcons (intern ("region-end"), | |
593 | Fcons (intern ("point"), | |
594 | Fcons (intern ("mark"), Qnil)))); | |
595 | staticpro (&preserved_fns); | |
596 | ||
597 | Qlist = intern ("list"); | |
598 | staticpro (&Qlist); | |
599 | ||
ec28a64d MB |
600 | Qminus = intern ("-"); |
601 | staticpro (&Qminus); | |
602 | ||
603 | Qcall_interactively = intern ("call-interactively"); | |
604 | staticpro (&Qcall_interactively); | |
605 | ||
606 | Qcommand_debug_status = intern ("command-debug-status"); | |
607 | staticpro (&Qcommand_debug_status); | |
608 | ||
52614803 RS |
609 | Qenable_recursive_minibuffers = intern ("enable-recursive-minibuffers"); |
610 | staticpro (&Qenable_recursive_minibuffers); | |
611 | ||
ec28a64d MB |
612 | DEFVAR_LISP ("prefix-arg", &Vprefix_arg, |
613 | "The value of the prefix argument for the next editing command.\n\ | |
614 | It may be a number, or the symbol `-' for just a minus sign as arg,\n\ | |
615 | or a list whose car is a number for just one or more C-U's\n\ | |
616 | or nil if no argument has been specified.\n\ | |
617 | \n\ | |
618 | You cannot examine this variable to find the argument for this command\n\ | |
619 | since it has been set to nil by the time you can look.\n\ | |
620 | Instead, you should use the variable `current-prefix-arg', although\n\ | |
621 | normally commands can get this prefix argument with (interactive \"P\")."); | |
622 | Vprefix_arg = Qnil; | |
623 | ||
624 | DEFVAR_LISP ("current-prefix-arg", &Vcurrent_prefix_arg, | |
625 | "The value of the prefix argument for this editing command.\n\ | |
626 | It may be a number, or the symbol `-' for just a minus sign as arg,\n\ | |
627 | or a list whose car is a number for just one or more C-U's\n\ | |
628 | or nil if no argument has been specified.\n\ | |
629 | This is what `(interactive \"P\")' returns."); | |
630 | Vcurrent_prefix_arg = Qnil; | |
631 | ||
632 | DEFVAR_LISP ("command-history", &Vcommand_history, | |
633 | "List of recent commands that read arguments from terminal.\n\ | |
634 | Each command is represented as a form to evaluate."); | |
635 | Vcommand_history = Qnil; | |
636 | ||
637 | DEFVAR_LISP ("command-debug-status", &Vcommand_debug_status, | |
638 | "Debugging status of current interactive command.\n\ | |
639 | Bound each time `call-interactively' is called;\n\ | |
640 | may be set by the debugger as a reminder for itself."); | |
641 | Vcommand_debug_status = Qnil; | |
642 | ||
643 | defsubr (&Sinteractive); | |
644 | defsubr (&Scall_interactively); | |
645 | defsubr (&Sprefix_numeric_value); | |
646 | } |