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1 | /* |
2 | * Copyright (c) 1988 Mark Nudleman | |
3 | * Copyright (c) 1988 Regents of the University of California. | |
4 | * All rights reserved. | |
5 | * | |
6 | * This code is derived from software contributed to Berkeley by | |
7 | * Mark Nudleman. | |
8 | * | |
9 | * Redistribution and use in source and binary forms are permitted | |
10 | * provided that the above copyright notice and this paragraph are | |
11 | * duplicated in all such forms and that any documentation, | |
12 | * advertising materials, and other materials related to such | |
13 | * distribution and use acknowledge that the software was developed | |
14 | * by the University of California, Berkeley. The name of the | |
15 | * University may not be used to endorse or promote products derived | |
16 | * from this software without specific prior written permission. | |
17 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR | |
18 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED | |
19 | * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. | |
20 | */ | |
21 | ||
22 | #ifndef lint | |
00896020 | 23 | static char sccsid[] = "@(#)command.c 5.4 (Berkeley) %G%"; |
bfe13c81 KB |
24 | #endif /* not lint */ |
25 | ||
26 | /* | |
27 | * User-level command processor. | |
28 | */ | |
29 | ||
30 | #include "less.h" | |
31 | #include "position.h" | |
32 | #include "cmd.h" | |
33 | ||
34 | #define NO_MCA 0 | |
35 | #define MCA_DONE 1 | |
36 | #define MCA_MORE 2 | |
37 | ||
38 | extern int erase_char, kill_char; | |
39 | extern int ispipe; | |
40 | extern int sigs; | |
41 | extern int quit_at_eof; | |
42 | extern int hit_eof; | |
43 | extern int sc_width; | |
44 | extern int sc_height; | |
45 | extern int sc_window; | |
46 | extern int curr_ac; | |
47 | extern int ac; | |
48 | extern int quitting; | |
49 | extern int scroll; | |
50 | extern char *first_cmd; | |
51 | extern char *every_first_cmd; | |
52 | extern char version[]; | |
53 | extern char *current_file; | |
bfe13c81 | 54 | extern char *editor; |
bfe13c81 KB |
55 | extern int screen_trashed; /* The screen has been overwritten */ |
56 | ||
57 | static char cmdbuf[120]; /* Buffer for holding a multi-char command */ | |
bfe13c81 KB |
58 | static char *cp; /* Pointer into cmdbuf */ |
59 | static int cmd_col; /* Current column of the multi-char command */ | |
60 | static int mca; /* The multicharacter command (action) */ | |
61 | static int last_mca; /* The previous mca */ | |
62 | static int number; /* The number typed by the user */ | |
63 | static int wsearch; /* Search for matches (1) or non-matches (0) */ | |
64 | ||
65 | /* | |
66 | * Reset command buffer (to empty). | |
67 | */ | |
68 | cmd_reset() | |
69 | { | |
70 | cp = cmdbuf; | |
71 | } | |
72 | ||
73 | /* | |
74 | * Backspace in command buffer. | |
75 | */ | |
76 | static int | |
77 | cmd_erase() | |
78 | { | |
79 | if (cp == cmdbuf) | |
80 | /* | |
81 | * Backspace past beginning of the string: | |
82 | * this usually means abort the command. | |
83 | */ | |
84 | return (1); | |
85 | ||
86 | if (control_char(*--cp)) | |
87 | { | |
88 | /* | |
89 | * Erase an extra character, for the carat. | |
90 | */ | |
91 | backspace(); | |
92 | cmd_col--; | |
93 | } | |
94 | backspace(); | |
95 | cmd_col--; | |
96 | return (0); | |
97 | } | |
98 | ||
99 | /* | |
100 | * Set up the display to start a new multi-character command. | |
101 | */ | |
102 | start_mca(action, prompt) | |
103 | int action; | |
104 | char *prompt; | |
105 | { | |
106 | lower_left(); | |
107 | clear_eol(); | |
108 | putstr(prompt); | |
109 | cmd_col = strlen(prompt); | |
110 | mca = action; | |
111 | } | |
112 | ||
113 | /* | |
114 | * Process a single character of a multi-character command, such as | |
115 | * a number, or the pattern of a search command. | |
116 | */ | |
117 | static int | |
118 | cmd_char(c) | |
119 | int c; | |
120 | { | |
121 | if (c == erase_char) | |
122 | { | |
123 | if (cmd_erase()) | |
124 | return (1); | |
125 | } else if (c == kill_char) | |
126 | { | |
127 | /* {{ Could do this faster, but who cares? }} */ | |
128 | while (cmd_erase() == 0) | |
129 | ; | |
130 | } else if (cp >= &cmdbuf[sizeof(cmdbuf)-1]) | |
131 | { | |
132 | /* | |
133 | * No room in the command buffer. | |
134 | */ | |
135 | bell(); | |
136 | } else if (cmd_col >= sc_width-3) | |
137 | { | |
138 | /* | |
139 | * No room on the screen. | |
140 | * {{ Could get fancy here; maybe shift the displayed | |
141 | * line and make room for more chars, like ksh. }} | |
142 | */ | |
143 | bell(); | |
144 | } else | |
145 | { | |
146 | /* | |
147 | * Append the character to the string. | |
148 | */ | |
149 | *cp++ = c; | |
150 | if (control_char(c)) | |
151 | { | |
152 | putchr('^'); | |
153 | cmd_col++; | |
154 | c = carat_char(c); | |
155 | } | |
156 | putchr(c); | |
157 | cmd_col++; | |
158 | } | |
159 | return (0); | |
160 | } | |
161 | ||
162 | /* | |
163 | * Return the number currently in the command buffer. | |
164 | */ | |
165 | static int | |
166 | cmd_int() | |
167 | { | |
168 | *cp = '\0'; | |
169 | cp = cmdbuf; | |
170 | return (atoi(cmdbuf)); | |
171 | } | |
172 | ||
173 | /* | |
174 | * Move the cursor to lower left before executing a command. | |
175 | * This looks nicer if the command takes a long time before | |
176 | * updating the screen. | |
177 | */ | |
178 | static void | |
179 | cmd_exec() | |
180 | { | |
181 | lower_left(); | |
182 | flush(); | |
183 | } | |
184 | ||
185 | /* | |
186 | * Display the appropriate prompt. | |
187 | */ | |
188 | static void | |
189 | prompt() | |
190 | { | |
191 | register char *p; | |
192 | ||
193 | if (first_cmd != NULL && *first_cmd != '\0') | |
194 | { | |
195 | /* | |
196 | * No prompt necessary if commands are from first_cmd | |
197 | * rather than from the user. | |
198 | */ | |
199 | return; | |
200 | } | |
201 | ||
202 | /* | |
203 | * If nothing is displayed yet, display starting from line 1. | |
204 | */ | |
205 | if (position(TOP) == NULL_POSITION) | |
206 | jump_back(1); | |
207 | else if (screen_trashed) | |
208 | repaint(); | |
209 | ||
210 | /* | |
211 | * If the -E flag is set and we've hit EOF on the last file, quit. | |
212 | */ | |
213 | if (quit_at_eof == 2 && hit_eof && curr_ac + 1 >= ac) | |
214 | quit(); | |
215 | ||
216 | /* | |
217 | * Select the proper prompt and display it. | |
218 | */ | |
219 | lower_left(); | |
220 | clear_eol(); | |
221 | p = pr_string(); | |
222 | if (p == NULL) | |
223 | putchr(':'); | |
224 | else | |
225 | { | |
226 | so_enter(); | |
227 | putstr(p); | |
228 | so_exit(); | |
229 | } | |
230 | } | |
231 | ||
232 | /* | |
233 | * Get command character. | |
234 | * The character normally comes from the keyboard, | |
235 | * but may come from the "first_cmd" string. | |
236 | */ | |
237 | static int | |
238 | getcc() | |
239 | { | |
240 | if (first_cmd == NULL) | |
241 | return (getchr()); | |
242 | ||
243 | if (*first_cmd == '\0') | |
244 | { | |
245 | /* | |
246 | * Reached end of first_cmd input. | |
247 | */ | |
248 | first_cmd = NULL; | |
249 | if (cp > cmdbuf && position(TOP) == NULL_POSITION) | |
250 | { | |
251 | /* | |
252 | * Command is incomplete, so try to complete it. | |
253 | * There are only two cases: | |
254 | * 1. We have "/string" but no newline. Add the \n. | |
255 | * 2. We have a number but no command. Treat as #g. | |
256 | * (This is all pretty hokey.) | |
257 | */ | |
258 | if (mca != A_DIGIT) | |
259 | /* Not a number; must be search string */ | |
260 | return ('\n'); | |
261 | else | |
262 | /* A number; append a 'g' */ | |
263 | return ('g'); | |
264 | } | |
265 | return (getchr()); | |
266 | } | |
267 | return (*first_cmd++); | |
268 | } | |
269 | ||
270 | /* | |
271 | * Execute a multicharacter command. | |
272 | */ | |
273 | static void | |
274 | exec_mca() | |
275 | { | |
276 | register char *p; | |
bfe13c81 KB |
277 | |
278 | *cp = '\0'; | |
279 | cmd_exec(); | |
280 | switch (mca) | |
281 | { | |
282 | case A_F_SEARCH: | |
283 | search(1, cmdbuf, number, wsearch); | |
284 | break; | |
285 | case A_B_SEARCH: | |
286 | search(0, cmdbuf, number, wsearch); | |
287 | break; | |
288 | case A_FIRSTCMD: | |
289 | /* | |
290 | * Skip leading spaces or + signs in the string. | |
291 | */ | |
292 | for (p = cmdbuf; *p == '+' || *p == ' '; p++) | |
293 | ; | |
294 | if (every_first_cmd != NULL) | |
295 | free(every_first_cmd); | |
296 | if (*p == '\0') | |
297 | every_first_cmd = NULL; | |
298 | else | |
299 | every_first_cmd = save(p); | |
300 | break; | |
301 | case A_TOGGLE_OPTION: | |
302 | toggle_option(cmdbuf, 1); | |
303 | break; | |
304 | case A_EXAMINE: | |
305 | /* | |
306 | * Ignore leading spaces in the filename. | |
307 | */ | |
308 | for (p = cmdbuf; *p == ' '; p++) | |
309 | ; | |
310 | edit(glob(p)); | |
311 | break; | |
bfe13c81 KB |
312 | } |
313 | } | |
314 | ||
315 | /* | |
316 | * Add a character to a multi-character command. | |
317 | */ | |
318 | static int | |
319 | mca_char(c) | |
320 | int c; | |
321 | { | |
322 | switch (mca) | |
323 | { | |
324 | case 0: | |
325 | /* | |
326 | * Not in a multicharacter command. | |
327 | */ | |
328 | return (NO_MCA); | |
329 | ||
330 | case A_PREFIX: | |
331 | /* | |
332 | * In the prefix of a command. | |
333 | */ | |
334 | return (NO_MCA); | |
335 | ||
336 | case A_DIGIT: | |
337 | /* | |
338 | * Entering digits of a number. | |
339 | * Terminated by a non-digit. | |
340 | */ | |
341 | if ((c < '0' || c > '9') && | |
342 | c != erase_char && c != kill_char) | |
343 | { | |
344 | /* | |
345 | * Not part of the number. | |
346 | * Treat as a normal command character. | |
347 | */ | |
348 | number = cmd_int(); | |
349 | mca = 0; | |
350 | return (NO_MCA); | |
351 | } | |
352 | break; | |
353 | ||
354 | case A_TOGGLE_OPTION: | |
355 | /* | |
356 | * Special case for the TOGGLE_OPTION command. | |
357 | * if the option letter which was entered is a | |
358 | * single-char option, execute the command immediately, | |
359 | * so he doesn't have to hit RETURN. | |
360 | */ | |
361 | if (cp == cmdbuf && c != erase_char && c != kill_char && | |
362 | single_char_option(c)) | |
363 | { | |
364 | cmdbuf[0] = c; | |
365 | cmdbuf[1] = '\0'; | |
366 | toggle_option(cmdbuf, 1); | |
367 | return (MCA_DONE); | |
368 | } | |
369 | break; | |
370 | } | |
371 | ||
372 | /* | |
373 | * Any other multicharacter command | |
374 | * is terminated by a newline. | |
375 | */ | |
376 | if (c == '\n' || c == '\r') | |
377 | { | |
378 | /* | |
379 | * Execute the command. | |
380 | */ | |
381 | exec_mca(); | |
382 | return (MCA_DONE); | |
383 | } | |
384 | /* | |
385 | * Append the char to the command buffer. | |
386 | */ | |
387 | if (cmd_char(c)) | |
388 | /* | |
389 | * Abort the multi-char command. | |
390 | */ | |
391 | return (MCA_DONE); | |
392 | /* | |
393 | * Need another character. | |
394 | */ | |
395 | return (MCA_MORE); | |
396 | } | |
397 | ||
398 | /* | |
399 | * Main command processor. | |
400 | * Accept and execute commands until a quit command, then return. | |
401 | */ | |
402 | public void | |
403 | commands() | |
404 | { | |
405 | register int c; | |
406 | register int action; | |
407 | ||
408 | last_mca = 0; | |
409 | scroll = (sc_height + 1) / 2; | |
410 | ||
411 | for (;;) | |
412 | { | |
413 | mca = 0; | |
414 | number = 0; | |
415 | ||
416 | /* | |
417 | * See if any signals need processing. | |
418 | */ | |
419 | if (sigs) | |
420 | { | |
421 | psignals(); | |
422 | if (quitting) | |
423 | quit(); | |
424 | } | |
425 | ||
426 | /* | |
427 | * Display prompt and accept a character. | |
428 | */ | |
429 | cmd_reset(); | |
430 | prompt(); | |
431 | noprefix(); | |
432 | c = getcc(); | |
433 | ||
434 | again: | |
435 | if (sigs) | |
436 | continue; | |
437 | ||
438 | /* | |
439 | * If we are in a multicharacter command, call mca_char. | |
440 | * Otherwise we call cmd_decode to determine the | |
441 | * action to be performed. | |
442 | */ | |
443 | if (mca) | |
444 | switch (mca_char(c)) | |
445 | { | |
446 | case MCA_MORE: | |
447 | /* | |
448 | * Need another character. | |
449 | */ | |
450 | c = getcc(); | |
451 | goto again; | |
452 | case MCA_DONE: | |
453 | /* | |
454 | * Command has been handled by mca_char. | |
455 | * Start clean with a prompt. | |
456 | */ | |
457 | continue; | |
458 | case NO_MCA: | |
459 | /* | |
460 | * Not a multi-char command | |
461 | * (at least, not anymore). | |
462 | */ | |
463 | break; | |
464 | } | |
465 | ||
466 | /* | |
467 | * Decode the command character and decide what to do. | |
468 | */ | |
469 | switch (action = cmd_decode(c)) | |
470 | { | |
471 | case A_DIGIT: | |
472 | /* | |
473 | * First digit of a number. | |
474 | */ | |
475 | start_mca(A_DIGIT, ":"); | |
476 | goto again; | |
477 | ||
478 | case A_F_SCREEN: | |
479 | /* | |
480 | * Forward one screen. | |
481 | */ | |
482 | if (number <= 0) | |
483 | number = sc_window; | |
484 | if (number <= 0) | |
485 | number = sc_height - 1; | |
486 | cmd_exec(); | |
487 | forward(number, 1); | |
488 | break; | |
489 | ||
490 | case A_B_SCREEN: | |
491 | /* | |
492 | * Backward one screen. | |
493 | */ | |
494 | if (number <= 0) | |
495 | number = sc_window; | |
496 | if (number <= 0) | |
497 | number = sc_height - 1; | |
498 | cmd_exec(); | |
499 | backward(number, 1); | |
500 | break; | |
501 | ||
502 | case A_F_LINE: | |
503 | /* | |
504 | * Forward N (default 1) line. | |
505 | */ | |
506 | if (number <= 0) | |
507 | number = 1; | |
508 | cmd_exec(); | |
509 | forward(number, 0); | |
510 | break; | |
511 | ||
512 | case A_B_LINE: | |
513 | /* | |
514 | * Backward N (default 1) line. | |
515 | */ | |
516 | if (number <= 0) | |
517 | number = 1; | |
518 | cmd_exec(); | |
519 | backward(number, 0); | |
520 | break; | |
521 | ||
522 | case A_F_SCROLL: | |
523 | /* | |
524 | * Forward N lines | |
525 | * (default same as last 'd' or 'u' command). | |
526 | */ | |
527 | if (number > 0) | |
528 | scroll = number; | |
529 | cmd_exec(); | |
530 | forward(scroll, 0); | |
531 | break; | |
532 | ||
533 | case A_B_SCROLL: | |
534 | /* | |
535 | * Forward N lines | |
536 | * (default same as last 'd' or 'u' command). | |
537 | */ | |
538 | if (number > 0) | |
539 | scroll = number; | |
540 | cmd_exec(); | |
541 | backward(scroll, 0); | |
542 | break; | |
543 | ||
544 | case A_FREPAINT: | |
545 | /* | |
546 | * Flush buffers, then repaint screen. | |
547 | * Don't flush the buffers on a pipe! | |
548 | */ | |
549 | if (!ispipe) | |
550 | { | |
551 | ch_init(0, 0); | |
552 | clr_linenum(); | |
553 | } | |
554 | /* FALLTHRU */ | |
555 | case A_REPAINT: | |
556 | /* | |
557 | * Repaint screen. | |
558 | */ | |
559 | cmd_exec(); | |
560 | repaint(); | |
561 | break; | |
562 | ||
563 | case A_GOLINE: | |
564 | /* | |
565 | * Go to line N, default beginning of file. | |
566 | */ | |
567 | if (number <= 0) | |
568 | number = 1; | |
569 | cmd_exec(); | |
570 | jump_back(number); | |
571 | break; | |
572 | ||
573 | case A_PERCENT: | |
574 | /* | |
575 | * Go to a specified percentage into the file. | |
576 | */ | |
577 | if (number < 0) | |
578 | number = 0; | |
579 | if (number > 100) | |
580 | number = 100; | |
581 | cmd_exec(); | |
582 | jump_percent(number); | |
583 | break; | |
584 | ||
585 | case A_GOEND: | |
586 | /* | |
587 | * Go to line N, default end of file. | |
588 | */ | |
589 | cmd_exec(); | |
590 | if (number <= 0) | |
591 | jump_forw(); | |
592 | else | |
593 | jump_back(number); | |
594 | break; | |
595 | ||
596 | case A_STAT: | |
597 | /* | |
598 | * Print file name, etc. | |
599 | */ | |
600 | cmd_exec(); | |
601 | error(eq_message()); | |
602 | break; | |
603 | ||
604 | case A_VERSION: | |
605 | /* | |
606 | * Print version number, without the "@(#)". | |
607 | */ | |
608 | cmd_exec(); | |
609 | error(version+4); | |
610 | break; | |
611 | ||
612 | case A_QUIT: | |
613 | /* | |
614 | * Exit. | |
615 | */ | |
616 | quit(); | |
617 | ||
618 | case A_F_SEARCH: | |
619 | case A_B_SEARCH: | |
620 | /* | |
621 | * Search for a pattern. | |
622 | * Accept chars of the pattern until \n. | |
623 | */ | |
624 | if (number <= 0) | |
625 | number = 1; | |
626 | start_mca(action, (action==A_F_SEARCH) ? "/" : "?"); | |
627 | last_mca = mca; | |
628 | wsearch = 1; | |
629 | c = getcc(); | |
630 | if (c == '!') | |
631 | { | |
632 | /* | |
633 | * Invert the sense of the search. | |
634 | * Set wsearch to 0 and get a new | |
635 | * character for the start of the pattern. | |
636 | */ | |
637 | start_mca(action, | |
638 | (action==A_F_SEARCH) ? "!/" : "!?"); | |
639 | wsearch = 0; | |
640 | c = getcc(); | |
641 | } | |
642 | goto again; | |
643 | ||
644 | case A_AGAIN_SEARCH: | |
645 | /* | |
646 | * Repeat previous search. | |
647 | */ | |
648 | if (number <= 0) | |
649 | number = 1; | |
650 | if (wsearch) | |
651 | start_mca(last_mca, | |
652 | (last_mca==A_F_SEARCH) ? "/" : "?"); | |
653 | else | |
654 | start_mca(last_mca, | |
655 | (last_mca==A_F_SEARCH) ? "!/" : "!?"); | |
656 | cmd_exec(); | |
657 | search(mca==A_F_SEARCH, (char *)NULL, number, wsearch); | |
658 | break; | |
659 | ||
660 | case A_HELP: | |
661 | /* | |
662 | * Help. | |
663 | */ | |
664 | lower_left(); | |
665 | clear_eol(); | |
666 | putstr("help"); | |
667 | cmd_exec(); | |
668 | help(); | |
669 | break; | |
670 | ||
671 | case A_EXAMINE: | |
672 | /* | |
673 | * Edit a new file. Get the filename. | |
674 | */ | |
675 | cmd_reset(); | |
676 | start_mca(A_EXAMINE, "Examine: "); | |
677 | c = getcc(); | |
678 | goto again; | |
679 | ||
680 | case A_VISUAL: | |
681 | /* | |
682 | * Invoke an editor on the input file. | |
683 | */ | |
bfe13c81 KB |
684 | if (ispipe) |
685 | { | |
686 | error("Cannot edit standard input"); | |
687 | break; | |
688 | } | |
689 | /* | |
690 | * Try to pass the line number to the editor. | |
691 | */ | |
692 | cmd_exec(); | |
693 | c = currline(MIDDLE); | |
694 | if (c == 0) | |
695 | sprintf(cmdbuf, "%s %s", | |
696 | editor, current_file); | |
697 | else | |
698 | sprintf(cmdbuf, "%s +%d %s", | |
699 | editor, c, current_file); | |
700 | lsystem(cmdbuf); | |
701 | ch_init(0, 0); | |
702 | clr_linenum(); | |
703 | break; | |
bfe13c81 KB |
704 | |
705 | case A_NEXT_FILE: | |
706 | /* | |
707 | * Examine next file. | |
708 | */ | |
709 | if (number <= 0) | |
710 | number = 1; | |
711 | next_file(number); | |
712 | break; | |
713 | ||
714 | case A_PREV_FILE: | |
715 | /* | |
716 | * Examine previous file. | |
717 | */ | |
718 | if (number <= 0) | |
719 | number = 1; | |
720 | prev_file(number); | |
721 | break; | |
722 | ||
723 | case A_TOGGLE_OPTION: | |
724 | /* | |
725 | * Toggle a flag setting. | |
726 | */ | |
727 | cmd_reset(); | |
728 | start_mca(A_TOGGLE_OPTION, "-"); | |
729 | c = getcc(); | |
730 | goto again; | |
731 | ||
732 | case A_DISP_OPTION: | |
733 | /* | |
734 | * Report a flag setting. | |
735 | */ | |
736 | cmd_reset(); | |
737 | start_mca(A_DISP_OPTION, "_"); | |
738 | c = getcc(); | |
739 | if (c == erase_char || c == kill_char) | |
740 | break; | |
741 | cmdbuf[0] = c; | |
742 | cmdbuf[1] = '\0'; | |
743 | toggle_option(cmdbuf, 0); | |
744 | break; | |
745 | ||
746 | case A_FIRSTCMD: | |
747 | /* | |
748 | * Set an initial command for new files. | |
749 | */ | |
750 | cmd_reset(); | |
751 | start_mca(A_FIRSTCMD, "+"); | |
752 | c = getcc(); | |
753 | goto again; | |
754 | ||
bfe13c81 KB |
755 | case A_SETMARK: |
756 | /* | |
757 | * Set a mark. | |
758 | */ | |
759 | lower_left(); | |
760 | clear_eol(); | |
761 | start_mca(A_SETMARK, "mark: "); | |
762 | c = getcc(); | |
763 | if (c == erase_char || c == kill_char) | |
764 | break; | |
765 | setmark(c); | |
766 | break; | |
767 | ||
768 | case A_GOMARK: | |
769 | /* | |
770 | * Go to a mark. | |
771 | */ | |
772 | lower_left(); | |
773 | clear_eol(); | |
774 | start_mca(A_GOMARK, "goto mark: "); | |
775 | c = getcc(); | |
776 | if (c == erase_char || c == kill_char) | |
777 | break; | |
778 | gomark(c); | |
779 | break; | |
780 | ||
781 | case A_PREFIX: | |
782 | /* | |
783 | * The command is incomplete (more chars are needed). | |
784 | * Display the current char so the user knows | |
785 | * what's going on and get another character. | |
786 | */ | |
787 | if (mca != A_PREFIX) | |
788 | start_mca(A_PREFIX, "& "); | |
789 | if (control_char(c)) | |
790 | { | |
791 | putchr('^'); | |
792 | c = carat_char(c); | |
793 | } | |
794 | putchr(c); | |
795 | c = getcc(); | |
796 | goto again; | |
797 | ||
798 | default: | |
799 | bell(); | |
800 | break; | |
801 | } | |
802 | } | |
803 | } |