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bfe13c81 KB |
1 | /* |
2 | * Copyright (c) 1988 Mark Nudleman | |
3 | * Copyright (c) 1988 Regents of the University of California. | |
4 | * All rights reserved. | |
5 | * | |
bfe13c81 KB |
6 | * Redistribution and use in source and binary forms are permitted |
7 | * provided that the above copyright notice and this paragraph are | |
8 | * duplicated in all such forms and that any documentation, | |
9 | * advertising materials, and other materials related to such | |
10 | * distribution and use acknowledge that the software was developed | |
a942b40b KB |
11 | * by Mark Nudleman and the University of California, Berkeley. The |
12 | * name of Mark Nudleman or the | |
bfe13c81 KB |
13 | * University may not be used to endorse or promote products derived |
14 | * from this software without specific prior written permission. | |
15 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR | |
16 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED | |
17 | * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. | |
18 | */ | |
19 | ||
20 | #ifndef lint | |
f5167107 | 21 | static char sccsid[] = "@(#)command.c 5.8 (Berkeley) %G%"; |
bfe13c81 KB |
22 | #endif /* not lint */ |
23 | ||
24 | /* | |
25 | * User-level command processor. | |
26 | */ | |
27 | ||
28 | #include "less.h" | |
29 | #include "position.h" | |
30 | #include "cmd.h" | |
31 | ||
32 | #define NO_MCA 0 | |
33 | #define MCA_DONE 1 | |
34 | #define MCA_MORE 2 | |
35 | ||
36 | extern int erase_char, kill_char; | |
37 | extern int ispipe; | |
38 | extern int sigs; | |
39 | extern int quit_at_eof; | |
40 | extern int hit_eof; | |
41 | extern int sc_width; | |
42 | extern int sc_height; | |
43 | extern int sc_window; | |
44 | extern int curr_ac; | |
45 | extern int ac; | |
46 | extern int quitting; | |
47 | extern int scroll; | |
48 | extern char *first_cmd; | |
49 | extern char *every_first_cmd; | |
bfe13c81 | 50 | extern char *current_file; |
bfe13c81 | 51 | extern char *editor; |
bfe13c81 KB |
52 | extern int screen_trashed; /* The screen has been overwritten */ |
53 | ||
54 | static char cmdbuf[120]; /* Buffer for holding a multi-char command */ | |
bfe13c81 KB |
55 | static char *cp; /* Pointer into cmdbuf */ |
56 | static int cmd_col; /* Current column of the multi-char command */ | |
57 | static int mca; /* The multicharacter command (action) */ | |
58 | static int last_mca; /* The previous mca */ | |
59 | static int number; /* The number typed by the user */ | |
60 | static int wsearch; /* Search for matches (1) or non-matches (0) */ | |
61 | ||
62 | /* | |
63 | * Reset command buffer (to empty). | |
64 | */ | |
65 | cmd_reset() | |
66 | { | |
67 | cp = cmdbuf; | |
68 | } | |
69 | ||
70 | /* | |
71 | * Backspace in command buffer. | |
72 | */ | |
73 | static int | |
74 | cmd_erase() | |
75 | { | |
76 | if (cp == cmdbuf) | |
77 | /* | |
78 | * Backspace past beginning of the string: | |
79 | * this usually means abort the command. | |
80 | */ | |
81 | return (1); | |
82 | ||
83 | if (control_char(*--cp)) | |
84 | { | |
85 | /* | |
86 | * Erase an extra character, for the carat. | |
87 | */ | |
88 | backspace(); | |
89 | cmd_col--; | |
90 | } | |
91 | backspace(); | |
92 | cmd_col--; | |
93 | return (0); | |
94 | } | |
95 | ||
96 | /* | |
97 | * Set up the display to start a new multi-character command. | |
98 | */ | |
99 | start_mca(action, prompt) | |
100 | int action; | |
101 | char *prompt; | |
102 | { | |
103 | lower_left(); | |
104 | clear_eol(); | |
105 | putstr(prompt); | |
106 | cmd_col = strlen(prompt); | |
107 | mca = action; | |
108 | } | |
109 | ||
110 | /* | |
111 | * Process a single character of a multi-character command, such as | |
112 | * a number, or the pattern of a search command. | |
113 | */ | |
114 | static int | |
115 | cmd_char(c) | |
116 | int c; | |
117 | { | |
118 | if (c == erase_char) | |
119 | { | |
120 | if (cmd_erase()) | |
121 | return (1); | |
122 | } else if (c == kill_char) | |
123 | { | |
124 | /* {{ Could do this faster, but who cares? }} */ | |
125 | while (cmd_erase() == 0) | |
126 | ; | |
127 | } else if (cp >= &cmdbuf[sizeof(cmdbuf)-1]) | |
128 | { | |
129 | /* | |
130 | * No room in the command buffer. | |
131 | */ | |
132 | bell(); | |
133 | } else if (cmd_col >= sc_width-3) | |
134 | { | |
135 | /* | |
136 | * No room on the screen. | |
137 | * {{ Could get fancy here; maybe shift the displayed | |
138 | * line and make room for more chars, like ksh. }} | |
139 | */ | |
140 | bell(); | |
141 | } else | |
142 | { | |
143 | /* | |
144 | * Append the character to the string. | |
145 | */ | |
146 | *cp++ = c; | |
147 | if (control_char(c)) | |
148 | { | |
149 | putchr('^'); | |
150 | cmd_col++; | |
151 | c = carat_char(c); | |
152 | } | |
153 | putchr(c); | |
154 | cmd_col++; | |
155 | } | |
156 | return (0); | |
157 | } | |
158 | ||
159 | /* | |
160 | * Return the number currently in the command buffer. | |
161 | */ | |
162 | static int | |
163 | cmd_int() | |
164 | { | |
165 | *cp = '\0'; | |
166 | cp = cmdbuf; | |
167 | return (atoi(cmdbuf)); | |
168 | } | |
169 | ||
170 | /* | |
171 | * Move the cursor to lower left before executing a command. | |
172 | * This looks nicer if the command takes a long time before | |
173 | * updating the screen. | |
174 | */ | |
175 | static void | |
176 | cmd_exec() | |
177 | { | |
178 | lower_left(); | |
179 | flush(); | |
180 | } | |
181 | ||
182 | /* | |
183 | * Display the appropriate prompt. | |
184 | */ | |
185 | static void | |
186 | prompt() | |
187 | { | |
188 | register char *p; | |
189 | ||
190 | if (first_cmd != NULL && *first_cmd != '\0') | |
191 | { | |
192 | /* | |
193 | * No prompt necessary if commands are from first_cmd | |
194 | * rather than from the user. | |
195 | */ | |
196 | return; | |
197 | } | |
198 | ||
199 | /* | |
200 | * If nothing is displayed yet, display starting from line 1. | |
201 | */ | |
202 | if (position(TOP) == NULL_POSITION) | |
203 | jump_back(1); | |
204 | else if (screen_trashed) | |
205 | repaint(); | |
206 | ||
207 | /* | |
208 | * If the -E flag is set and we've hit EOF on the last file, quit. | |
209 | */ | |
210 | if (quit_at_eof == 2 && hit_eof && curr_ac + 1 >= ac) | |
211 | quit(); | |
212 | ||
213 | /* | |
214 | * Select the proper prompt and display it. | |
215 | */ | |
216 | lower_left(); | |
217 | clear_eol(); | |
218 | p = pr_string(); | |
219 | if (p == NULL) | |
220 | putchr(':'); | |
221 | else | |
222 | { | |
223 | so_enter(); | |
224 | putstr(p); | |
225 | so_exit(); | |
226 | } | |
227 | } | |
228 | ||
229 | /* | |
230 | * Get command character. | |
231 | * The character normally comes from the keyboard, | |
232 | * but may come from the "first_cmd" string. | |
233 | */ | |
234 | static int | |
235 | getcc() | |
236 | { | |
237 | if (first_cmd == NULL) | |
238 | return (getchr()); | |
239 | ||
240 | if (*first_cmd == '\0') | |
241 | { | |
242 | /* | |
243 | * Reached end of first_cmd input. | |
244 | */ | |
245 | first_cmd = NULL; | |
246 | if (cp > cmdbuf && position(TOP) == NULL_POSITION) | |
247 | { | |
248 | /* | |
249 | * Command is incomplete, so try to complete it. | |
250 | * There are only two cases: | |
251 | * 1. We have "/string" but no newline. Add the \n. | |
252 | * 2. We have a number but no command. Treat as #g. | |
253 | * (This is all pretty hokey.) | |
254 | */ | |
255 | if (mca != A_DIGIT) | |
256 | /* Not a number; must be search string */ | |
257 | return ('\n'); | |
258 | else | |
259 | /* A number; append a 'g' */ | |
260 | return ('g'); | |
261 | } | |
262 | return (getchr()); | |
263 | } | |
264 | return (*first_cmd++); | |
265 | } | |
266 | ||
267 | /* | |
268 | * Execute a multicharacter command. | |
269 | */ | |
270 | static void | |
271 | exec_mca() | |
272 | { | |
273 | register char *p; | |
bfe13c81 KB |
274 | |
275 | *cp = '\0'; | |
276 | cmd_exec(); | |
277 | switch (mca) | |
278 | { | |
279 | case A_F_SEARCH: | |
280 | search(1, cmdbuf, number, wsearch); | |
281 | break; | |
282 | case A_B_SEARCH: | |
283 | search(0, cmdbuf, number, wsearch); | |
284 | break; | |
285 | case A_FIRSTCMD: | |
286 | /* | |
287 | * Skip leading spaces or + signs in the string. | |
288 | */ | |
289 | for (p = cmdbuf; *p == '+' || *p == ' '; p++) | |
290 | ; | |
291 | if (every_first_cmd != NULL) | |
292 | free(every_first_cmd); | |
293 | if (*p == '\0') | |
294 | every_first_cmd = NULL; | |
295 | else | |
296 | every_first_cmd = save(p); | |
297 | break; | |
298 | case A_TOGGLE_OPTION: | |
299 | toggle_option(cmdbuf, 1); | |
300 | break; | |
301 | case A_EXAMINE: | |
302 | /* | |
303 | * Ignore leading spaces in the filename. | |
304 | */ | |
305 | for (p = cmdbuf; *p == ' '; p++) | |
306 | ; | |
307 | edit(glob(p)); | |
308 | break; | |
bfe13c81 KB |
309 | } |
310 | } | |
311 | ||
312 | /* | |
313 | * Add a character to a multi-character command. | |
314 | */ | |
315 | static int | |
316 | mca_char(c) | |
317 | int c; | |
318 | { | |
319 | switch (mca) | |
320 | { | |
321 | case 0: | |
322 | /* | |
323 | * Not in a multicharacter command. | |
324 | */ | |
325 | return (NO_MCA); | |
326 | ||
327 | case A_PREFIX: | |
328 | /* | |
329 | * In the prefix of a command. | |
330 | */ | |
331 | return (NO_MCA); | |
332 | ||
333 | case A_DIGIT: | |
334 | /* | |
335 | * Entering digits of a number. | |
336 | * Terminated by a non-digit. | |
337 | */ | |
338 | if ((c < '0' || c > '9') && | |
339 | c != erase_char && c != kill_char) | |
340 | { | |
341 | /* | |
342 | * Not part of the number. | |
343 | * Treat as a normal command character. | |
344 | */ | |
345 | number = cmd_int(); | |
346 | mca = 0; | |
347 | return (NO_MCA); | |
348 | } | |
349 | break; | |
350 | ||
351 | case A_TOGGLE_OPTION: | |
352 | /* | |
353 | * Special case for the TOGGLE_OPTION command. | |
354 | * if the option letter which was entered is a | |
355 | * single-char option, execute the command immediately, | |
356 | * so he doesn't have to hit RETURN. | |
357 | */ | |
358 | if (cp == cmdbuf && c != erase_char && c != kill_char && | |
359 | single_char_option(c)) | |
360 | { | |
361 | cmdbuf[0] = c; | |
362 | cmdbuf[1] = '\0'; | |
363 | toggle_option(cmdbuf, 1); | |
364 | return (MCA_DONE); | |
365 | } | |
366 | break; | |
367 | } | |
368 | ||
369 | /* | |
370 | * Any other multicharacter command | |
371 | * is terminated by a newline. | |
372 | */ | |
373 | if (c == '\n' || c == '\r') | |
374 | { | |
375 | /* | |
376 | * Execute the command. | |
377 | */ | |
378 | exec_mca(); | |
379 | return (MCA_DONE); | |
380 | } | |
381 | /* | |
382 | * Append the char to the command buffer. | |
383 | */ | |
384 | if (cmd_char(c)) | |
385 | /* | |
386 | * Abort the multi-char command. | |
387 | */ | |
388 | return (MCA_DONE); | |
389 | /* | |
390 | * Need another character. | |
391 | */ | |
392 | return (MCA_MORE); | |
393 | } | |
394 | ||
395 | /* | |
396 | * Main command processor. | |
397 | * Accept and execute commands until a quit command, then return. | |
398 | */ | |
399 | public void | |
400 | commands() | |
401 | { | |
402 | register int c; | |
403 | register int action; | |
404 | ||
405 | last_mca = 0; | |
406 | scroll = (sc_height + 1) / 2; | |
407 | ||
408 | for (;;) | |
409 | { | |
410 | mca = 0; | |
411 | number = 0; | |
412 | ||
413 | /* | |
414 | * See if any signals need processing. | |
415 | */ | |
416 | if (sigs) | |
417 | { | |
418 | psignals(); | |
419 | if (quitting) | |
420 | quit(); | |
421 | } | |
bfe13c81 KB |
422 | /* |
423 | * Display prompt and accept a character. | |
424 | */ | |
425 | cmd_reset(); | |
426 | prompt(); | |
427 | noprefix(); | |
428 | c = getcc(); | |
429 | ||
f5167107 | 430 | again: if (sigs) |
bfe13c81 KB |
431 | continue; |
432 | ||
433 | /* | |
434 | * If we are in a multicharacter command, call mca_char. | |
435 | * Otherwise we call cmd_decode to determine the | |
436 | * action to be performed. | |
437 | */ | |
438 | if (mca) | |
439 | switch (mca_char(c)) | |
440 | { | |
441 | case MCA_MORE: | |
442 | /* | |
443 | * Need another character. | |
444 | */ | |
445 | c = getcc(); | |
446 | goto again; | |
447 | case MCA_DONE: | |
448 | /* | |
449 | * Command has been handled by mca_char. | |
450 | * Start clean with a prompt. | |
451 | */ | |
452 | continue; | |
453 | case NO_MCA: | |
454 | /* | |
455 | * Not a multi-char command | |
456 | * (at least, not anymore). | |
457 | */ | |
458 | break; | |
459 | } | |
460 | ||
461 | /* | |
462 | * Decode the command character and decide what to do. | |
463 | */ | |
464 | switch (action = cmd_decode(c)) | |
465 | { | |
466 | case A_DIGIT: | |
467 | /* | |
468 | * First digit of a number. | |
469 | */ | |
470 | start_mca(A_DIGIT, ":"); | |
471 | goto again; | |
472 | ||
473 | case A_F_SCREEN: | |
474 | /* | |
475 | * Forward one screen. | |
476 | */ | |
477 | if (number <= 0) | |
478 | number = sc_window; | |
479 | if (number <= 0) | |
480 | number = sc_height - 1; | |
481 | cmd_exec(); | |
482 | forward(number, 1); | |
483 | break; | |
484 | ||
485 | case A_B_SCREEN: | |
486 | /* | |
487 | * Backward one screen. | |
488 | */ | |
489 | if (number <= 0) | |
490 | number = sc_window; | |
491 | if (number <= 0) | |
492 | number = sc_height - 1; | |
493 | cmd_exec(); | |
494 | backward(number, 1); | |
495 | break; | |
496 | ||
497 | case A_F_LINE: | |
498 | /* | |
499 | * Forward N (default 1) line. | |
500 | */ | |
501 | if (number <= 0) | |
502 | number = 1; | |
503 | cmd_exec(); | |
504 | forward(number, 0); | |
505 | break; | |
506 | ||
507 | case A_B_LINE: | |
508 | /* | |
509 | * Backward N (default 1) line. | |
510 | */ | |
511 | if (number <= 0) | |
512 | number = 1; | |
513 | cmd_exec(); | |
514 | backward(number, 0); | |
515 | break; | |
516 | ||
517 | case A_F_SCROLL: | |
518 | /* | |
519 | * Forward N lines | |
520 | * (default same as last 'd' or 'u' command). | |
521 | */ | |
522 | if (number > 0) | |
523 | scroll = number; | |
524 | cmd_exec(); | |
525 | forward(scroll, 0); | |
526 | break; | |
527 | ||
528 | case A_B_SCROLL: | |
529 | /* | |
530 | * Forward N lines | |
531 | * (default same as last 'd' or 'u' command). | |
532 | */ | |
533 | if (number > 0) | |
534 | scroll = number; | |
535 | cmd_exec(); | |
536 | backward(scroll, 0); | |
537 | break; | |
538 | ||
539 | case A_FREPAINT: | |
540 | /* | |
541 | * Flush buffers, then repaint screen. | |
542 | * Don't flush the buffers on a pipe! | |
543 | */ | |
544 | if (!ispipe) | |
545 | { | |
546 | ch_init(0, 0); | |
547 | clr_linenum(); | |
548 | } | |
549 | /* FALLTHRU */ | |
550 | case A_REPAINT: | |
551 | /* | |
552 | * Repaint screen. | |
553 | */ | |
554 | cmd_exec(); | |
555 | repaint(); | |
556 | break; | |
557 | ||
558 | case A_GOLINE: | |
559 | /* | |
560 | * Go to line N, default beginning of file. | |
561 | */ | |
562 | if (number <= 0) | |
563 | number = 1; | |
564 | cmd_exec(); | |
565 | jump_back(number); | |
566 | break; | |
567 | ||
568 | case A_PERCENT: | |
569 | /* | |
570 | * Go to a specified percentage into the file. | |
571 | */ | |
572 | if (number < 0) | |
573 | number = 0; | |
574 | if (number > 100) | |
575 | number = 100; | |
576 | cmd_exec(); | |
577 | jump_percent(number); | |
578 | break; | |
579 | ||
580 | case A_GOEND: | |
581 | /* | |
582 | * Go to line N, default end of file. | |
583 | */ | |
584 | cmd_exec(); | |
585 | if (number <= 0) | |
586 | jump_forw(); | |
587 | else | |
588 | jump_back(number); | |
589 | break; | |
590 | ||
591 | case A_STAT: | |
592 | /* | |
593 | * Print file name, etc. | |
594 | */ | |
595 | cmd_exec(); | |
f5167107 KB |
596 | lower_left(); |
597 | clear_eol(); | |
598 | putstr(eq_message()); | |
599 | lower_left(); | |
600 | c = getcc(); | |
601 | goto again; | |
bfe13c81 KB |
602 | case A_QUIT: |
603 | /* | |
604 | * Exit. | |
605 | */ | |
606 | quit(); | |
607 | ||
608 | case A_F_SEARCH: | |
609 | case A_B_SEARCH: | |
610 | /* | |
611 | * Search for a pattern. | |
612 | * Accept chars of the pattern until \n. | |
613 | */ | |
614 | if (number <= 0) | |
615 | number = 1; | |
616 | start_mca(action, (action==A_F_SEARCH) ? "/" : "?"); | |
617 | last_mca = mca; | |
618 | wsearch = 1; | |
619 | c = getcc(); | |
620 | if (c == '!') | |
621 | { | |
622 | /* | |
623 | * Invert the sense of the search. | |
624 | * Set wsearch to 0 and get a new | |
625 | * character for the start of the pattern. | |
626 | */ | |
627 | start_mca(action, | |
628 | (action==A_F_SEARCH) ? "!/" : "!?"); | |
629 | wsearch = 0; | |
630 | c = getcc(); | |
631 | } | |
632 | goto again; | |
633 | ||
634 | case A_AGAIN_SEARCH: | |
635 | /* | |
636 | * Repeat previous search. | |
637 | */ | |
638 | if (number <= 0) | |
639 | number = 1; | |
640 | if (wsearch) | |
641 | start_mca(last_mca, | |
642 | (last_mca==A_F_SEARCH) ? "/" : "?"); | |
643 | else | |
644 | start_mca(last_mca, | |
645 | (last_mca==A_F_SEARCH) ? "!/" : "!?"); | |
646 | cmd_exec(); | |
647 | search(mca==A_F_SEARCH, (char *)NULL, number, wsearch); | |
648 | break; | |
649 | ||
650 | case A_HELP: | |
651 | /* | |
652 | * Help. | |
653 | */ | |
654 | lower_left(); | |
655 | clear_eol(); | |
656 | putstr("help"); | |
657 | cmd_exec(); | |
658 | help(); | |
659 | break; | |
660 | ||
661 | case A_EXAMINE: | |
662 | /* | |
663 | * Edit a new file. Get the filename. | |
664 | */ | |
665 | cmd_reset(); | |
666 | start_mca(A_EXAMINE, "Examine: "); | |
667 | c = getcc(); | |
668 | goto again; | |
669 | ||
670 | case A_VISUAL: | |
671 | /* | |
672 | * Invoke an editor on the input file. | |
673 | */ | |
bfe13c81 KB |
674 | if (ispipe) |
675 | { | |
676 | error("Cannot edit standard input"); | |
677 | break; | |
678 | } | |
679 | /* | |
680 | * Try to pass the line number to the editor. | |
681 | */ | |
682 | cmd_exec(); | |
683 | c = currline(MIDDLE); | |
684 | if (c == 0) | |
d8cd1060 | 685 | (void)sprintf(cmdbuf, "%s %s", |
bfe13c81 KB |
686 | editor, current_file); |
687 | else | |
d8cd1060 | 688 | (void)sprintf(cmdbuf, "%s +%d %s", |
bfe13c81 KB |
689 | editor, c, current_file); |
690 | lsystem(cmdbuf); | |
691 | ch_init(0, 0); | |
692 | clr_linenum(); | |
693 | break; | |
bfe13c81 KB |
694 | |
695 | case A_NEXT_FILE: | |
696 | /* | |
697 | * Examine next file. | |
698 | */ | |
699 | if (number <= 0) | |
700 | number = 1; | |
701 | next_file(number); | |
702 | break; | |
703 | ||
704 | case A_PREV_FILE: | |
705 | /* | |
706 | * Examine previous file. | |
707 | */ | |
708 | if (number <= 0) | |
709 | number = 1; | |
710 | prev_file(number); | |
711 | break; | |
712 | ||
713 | case A_TOGGLE_OPTION: | |
714 | /* | |
715 | * Toggle a flag setting. | |
716 | */ | |
717 | cmd_reset(); | |
718 | start_mca(A_TOGGLE_OPTION, "-"); | |
719 | c = getcc(); | |
720 | goto again; | |
721 | ||
722 | case A_DISP_OPTION: | |
723 | /* | |
724 | * Report a flag setting. | |
725 | */ | |
726 | cmd_reset(); | |
727 | start_mca(A_DISP_OPTION, "_"); | |
728 | c = getcc(); | |
729 | if (c == erase_char || c == kill_char) | |
730 | break; | |
731 | cmdbuf[0] = c; | |
732 | cmdbuf[1] = '\0'; | |
733 | toggle_option(cmdbuf, 0); | |
734 | break; | |
735 | ||
736 | case A_FIRSTCMD: | |
737 | /* | |
738 | * Set an initial command for new files. | |
739 | */ | |
740 | cmd_reset(); | |
741 | start_mca(A_FIRSTCMD, "+"); | |
742 | c = getcc(); | |
743 | goto again; | |
744 | ||
bfe13c81 KB |
745 | case A_SETMARK: |
746 | /* | |
747 | * Set a mark. | |
748 | */ | |
749 | lower_left(); | |
750 | clear_eol(); | |
751 | start_mca(A_SETMARK, "mark: "); | |
752 | c = getcc(); | |
753 | if (c == erase_char || c == kill_char) | |
754 | break; | |
755 | setmark(c); | |
756 | break; | |
757 | ||
758 | case A_GOMARK: | |
759 | /* | |
760 | * Go to a mark. | |
761 | */ | |
762 | lower_left(); | |
763 | clear_eol(); | |
764 | start_mca(A_GOMARK, "goto mark: "); | |
765 | c = getcc(); | |
766 | if (c == erase_char || c == kill_char) | |
767 | break; | |
768 | gomark(c); | |
769 | break; | |
770 | ||
771 | case A_PREFIX: | |
772 | /* | |
773 | * The command is incomplete (more chars are needed). | |
774 | * Display the current char so the user knows | |
775 | * what's going on and get another character. | |
776 | */ | |
777 | if (mca != A_PREFIX) | |
778 | start_mca(A_PREFIX, "& "); | |
779 | if (control_char(c)) | |
780 | { | |
781 | putchr('^'); | |
782 | c = carat_char(c); | |
783 | } | |
784 | putchr(c); | |
785 | c = getcc(); | |
786 | goto again; | |
787 | ||
788 | default: | |
789 | bell(); | |
790 | break; | |
791 | } | |
792 | } | |
793 | } |