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Date:: Mon Jul 19 18:14:41 2021 UTC
Message:: add macro GUARD_READ_ONLY
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1 /*
2  * Copyright (c) 2021 Omar Polo <op@omarpolo.com>
3  *
4  * Permission to use, copy, modify, and distribute this software for any
5  * purpose with or without fee is hereby granted, provided that the above
6  * copyright notice and this permission notice appear in all copies.
7  *
8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15  */
16 
17 #include <limits.h>
18 #include <stdlib.h>
19 #include <string.h>
20 
21 #include "compl.h"
22 #include "defaults.h"
23 #include "minibuffer.h"
24 #include "telescope.h"
25 #include "ui.h"
26 #include "utf8.h"
27 
28 #define GUARD_RECURSIVE_MINIBUFFER()				\
29 	do {							\
30 		if (in_minibuffer) {				\
31 			message("enable-recursive-minibuffers " \
32 			    "is not yet available.");		\
33 			return;					\
34 		}						\
35 	} while(0)
36 
37 #define GUARD_READ_ONLY()				\
38 	do {						\
39 		if (!in_minibuffer) {			\
40 			message("text is read-only");	\
41 			return;				\
42 		}					\
43 	} while(0)
44 
45 /* return 1 if moved, 0 otherwise */
46 static inline int
47 forward_line(struct buffer *buffer, int n)
48 {
49 	struct vline *vl;
50 	int did;
51 
52 	if (buffer->current_line == NULL)
53 		return 0;
54 	vl = buffer->current_line;
55 
56 	did = 0;
57 	while (n != 0) {
58 		if (n > 0) {
59 			vl = TAILQ_NEXT(vl, vlines);
60 			if (vl == NULL)
61 				return did;
62 			if (vl->parent->flags & L_HIDDEN)
63 				continue;
64 			buffer->current_line = vl;
65 			n--;
66 		} else {
67 			vl = TAILQ_PREV(vl, vhead, vlines);
68 			if (vl == NULL)
69 				return did;
70 			if (vl->parent->flags & L_HIDDEN)
71 				continue;
72 			if (buffer->current_line == buffer->top_line) {
73 				buffer->line_off--;
74 				buffer->top_line = vl;
75 			}
76 			buffer->current_line = vl;
77 			n++;
78 		}
79 
80 		did = 1;
81 	}
82 
83 	return did;
84 }
85 
86 void
87 cmd_previous_line(struct buffer *buffer)
88 {
89 	forward_line(buffer, -1);
90 }
91 
92 void
93 cmd_next_line(struct buffer *buffer)
94 {
95 	forward_line(buffer, +1);
96 }
97 
98 void
99 cmd_backward_char(struct buffer *buffer)
100 {
101 	if (buffer->cpoff != 0)
102 		buffer->cpoff--;
103 }
104 
105 void
106 cmd_forward_char(struct buffer *buffer)
107 {
108 	size_t len = 0;
109 
110 	if (buffer->current_line == NULL)
111 		return;
112 
113 	if (buffer->current_line->line != NULL)
114 		len = utf8_cplen(buffer->current_line->line);
115 	if (++buffer->cpoff > len)
116 		buffer->cpoff = len;
117 }
118 
119 void
120 cmd_backward_paragraph(struct buffer *buffer)
121 {
122 	do {
123 		if (!forward_line(buffer, -1)) {
124 			message("No previous paragraph");
125 			return;
126 		}
127 	} while (buffer->current_line->line != NULL ||
128 	    buffer->current_line->parent->type != LINE_TEXT);
129 }
130 
131 void
132 cmd_forward_paragraph(struct buffer *buffer)
133 {
134 	do {
135 		if (!forward_line(buffer, +1)) {
136 			message("No next paragraph");
137 			return;
138 		}
139 	} while (buffer->current_line->line != NULL ||
140 	    buffer->current_line->parent->type != LINE_TEXT);
141 }
142 
143 void
144 cmd_move_beginning_of_line(struct buffer *buffer)
145 {
146 	buffer->cpoff = 0;
147 }
148 
149 void
150 cmd_move_end_of_line(struct buffer *buffer)
151 {
152 	struct vline	*vl;
153 
154 	vl = buffer->current_line;
155 	if (vl == NULL || vl->line == NULL)
156 		return;
157 	buffer->cpoff = utf8_cplen(vl->line);
158 }
159 
160 void
161 cmd_redraw(struct buffer *buffer)
162 {
163         ui_schedule_redraw();
164 }
165 
166 void
167 cmd_scroll_line_up(struct buffer *buffer)
168 {
169 	struct vline	*vl;
170 
171 	if ((vl = TAILQ_PREV(buffer->top_line, vhead, vlines))
172 	    == NULL)
173 		return;
174 
175 	forward_line(buffer, -1);
176 
177 	buffer->top_line = vl;
178 }
179 
180 void
181 cmd_scroll_line_down(struct buffer *buffer)
182 {
183 	if (!forward_line(buffer, +1))
184 		return;
185 
186 	buffer->top_line = TAILQ_NEXT(buffer->top_line, vlines);
187 	buffer->line_off++;
188 }
189 
190 void
191 cmd_scroll_up(struct buffer *buffer)
192 {
193 	struct vline	*vl;
194 	int		 i;
195 
196 	for (i = 0; i < body_lines; ++i) {
197 		vl = TAILQ_PREV(buffer->top_line, vhead, vlines);
198 		if (vl == NULL)
199 			break;
200 		buffer->top_line = vl;
201 		forward_line(buffer, -1);
202 	}
203 }
204 
205 void
206 cmd_scroll_down(struct buffer *buffer)
207 {
208 	int i;
209 
210 	for (i = 0; i < body_lines; ++i) {
211 		if (!forward_line(buffer, +1))
212 			break;
213 
214 		buffer->top_line = TAILQ_NEXT(buffer->top_line,
215 		    vlines);
216 	}
217 }
218 
219 void
220 cmd_beginning_of_buffer(struct buffer *buffer)
221 {
222 	buffer->current_line = TAILQ_FIRST(&buffer->head);
223 	buffer->cpoff = 0;
224 	buffer->top_line = buffer->current_line;
225 	buffer->line_off = 0;
226 }
227 
228 void
229 cmd_end_of_buffer(struct buffer *buffer)
230 {
231 	buffer->current_line = TAILQ_LAST(&buffer->head, vhead);
232 
233 	if (buffer->current_line == NULL)
234 		return;
235 
236 	/* deal with invisible lines */
237 	if (buffer->current_line->parent->flags & L_HIDDEN)
238 		forward_line(buffer, -1);
239 
240 	cmd_move_end_of_line(buffer);
241 }
242 
243 void
244 cmd_kill_telescope(struct buffer *buffer)
245 {
246 	save_session();
247 	event_loopbreak();
248 }
249 
250 void
251 cmd_push_button(struct buffer *buffer)
252 {
253 	struct vline	*vl;
254 	struct line	*l;
255 
256 	vl = buffer->current_line;
257 
258 	if (vl == NULL)
259 		return;
260 
261 	switch (vl->parent->type) {
262 	case LINE_LINK:
263 		load_url_in_tab(current_tab, vl->parent->alt);
264 		break;
265 	case LINE_PRE_START:
266 		l = TAILQ_NEXT(vl->parent, lines);
267 		for (; l != NULL; l = TAILQ_NEXT(l, lines)) {
268 			if (l->type == LINE_PRE_END)
269 				break;
270 			l->flags ^= L_HIDDEN;
271 			if (l->flags & L_HIDDEN)
272 				buffer->line_max--;
273 			else
274 				buffer->line_max++;
275 		}
276 		break;
277 	default:
278 		break;
279 	}
280 }
281 
282 void
283 cmd_push_button_new_tab(struct buffer *buffer)
284 {
285 	struct vline	*vl;
286 
287 	vl = buffer->current_line;
288 	if (vl == NULL || vl->parent->type != LINE_LINK)
289 		return;
290 
291 	new_tab(vl->parent->alt);
292 }
293 
294 void
295 cmd_previous_button(struct buffer *buffer)
296 {
297 	struct excursion place;
298 
299 	save_excursion(&place, buffer);
300 
301 	do {
302 		if (!forward_line(buffer, -1)) {
303 			restore_excursion(&place, buffer);
304 			message("No previous link");
305 			return;
306 		}
307 	} while (buffer->current_line->parent->type != LINE_LINK);
308 }
309 
310 void
311 cmd_next_button(struct buffer *buffer)
312 {
313 	struct excursion place;
314 
315 	save_excursion(&place, buffer);
316 
317 	do {
318 		if (!forward_line(buffer, +1)){
319 			restore_excursion(&place, buffer);
320 			message("No next link");
321 			return;
322 		}
323 	} while (buffer->current_line->parent->type != LINE_LINK);
324 }
325 
326 static inline int
327 is_heading(const struct line *l)
328 {
329 	return l->type == LINE_TITLE_1 ||
330 		l->type == LINE_TITLE_2 ||
331 		l->type == LINE_TITLE_3;
332 }
333 
334 void
335 cmd_previous_heading(struct buffer *buffer)
336 {
337 	struct excursion place;
338 
339 	save_excursion(&place, buffer);
340 
341 	do {
342 		if (!forward_line(buffer, -1)) {
343 			restore_excursion(&place, buffer);
344 			message("No previous heading");
345 			return;
346 		}
347 	} while (!is_heading(buffer->current_line->parent));
348 }
349 
350 void
351 cmd_next_heading(struct buffer *buffer)
352 {
353 	struct excursion place;
354 
355 	save_excursion(&place, buffer);
356 
357 	do {
358 		if (!forward_line(buffer, +1)) {
359 			restore_excursion(&place, buffer);
360 			message("No next heading");
361 			return;
362 		}
363 	} while (!is_heading(buffer->current_line->parent));
364 }
365 
366 void
367 cmd_previous_page(struct buffer *buffer)
368 {
369 	if (!load_previous_page(current_tab))
370 		message("No previous page");
371 	else
372 		start_loading_anim(current_tab);
373 }
374 
375 void
376 cmd_next_page(struct buffer *buffer)
377 {
378 	if (!load_next_page(current_tab))
379 		message("No next page");
380 	else
381 		start_loading_anim(current_tab);
382 }
383 
384 void
385 cmd_clear_minibuf(struct buffer *buffer)
386 {
387         message(NULL);
388 }
389 
390 void
391 cmd_execute_extended_command(struct buffer *buffer)
392 {
393 	size_t	 len;
394 
395 	GUARD_RECURSIVE_MINIBUFFER();
396 
397 	enter_minibuffer(eecmd_self_insert, eecmd_select, exit_minibuffer,
398 	    &eecmd_history, compl_eecmd, NULL);
399 
400 	len = sizeof(ministate.prompt);
401 	strlcpy(ministate.prompt, "", len);
402 
403 	if (thiskey.meta)
404 		strlcat(ministate.prompt, "M-", len);
405 
406 	strlcat(ministate.prompt, ui_keyname(thiskey.key), len);
407 
408 	if (thiskey.meta)
409 		strlcat(ministate.prompt, " ", len);
410 }
411 
412 void
413 cmd_tab_close(struct buffer *buffer)
414 {
415 	struct tab *tab, *t;
416 
417 	tab = current_tab;
418 	if (TAILQ_PREV(tab, tabshead, tabs) == NULL &&
419 	    TAILQ_NEXT(tab, tabs) == NULL) {
420 		message("Can't close the only tab.");
421 		return;
422 	}
423 
424 	if (evtimer_pending(&tab->loadingev, NULL))
425 		evtimer_del(&tab->loadingev);
426 
427 	stop_tab(tab);
428 
429 	if ((t = TAILQ_PREV(tab, tabshead, tabs)) == NULL)
430 		t = TAILQ_NEXT(tab, tabs);
431 	TAILQ_REMOVE(&tabshead, tab, tabs);
432 	free(tab);
433 
434 	switch_to_tab(t);
435 }
436 
437 void
438 cmd_tab_close_other(struct buffer *buffer)
439 {
440 	struct tab *t, *i;
441 
442 	TAILQ_FOREACH_SAFE(t, &tabshead, tabs, i) {
443 		if (t == current_tab)
444 			continue;
445 
446 		stop_tab(t);
447 		TAILQ_REMOVE(&tabshead, t, tabs);
448 		free(t);
449 	}
450 }
451 
452 void
453 cmd_tab_new(struct buffer *buffer)
454 {
455 	const char *url;
456 
457 	if ((url = new_tab_url) == NULL)
458 		url = NEW_TAB_URL;
459 
460 	new_tab(url);
461 }
462 
463 void
464 cmd_tab_next(struct buffer *buffer)
465 {
466 	struct tab *t;
467 
468 	if ((t = TAILQ_NEXT(current_tab, tabs)) == NULL)
469 		t = TAILQ_FIRST(&tabshead);
470 	switch_to_tab(t);
471 }
472 
473 void
474 cmd_tab_previous(struct buffer *buffer)
475 {
476 	struct tab *t;
477 
478 	if ((t = TAILQ_PREV(current_tab, tabshead, tabs)) == NULL)
479 		t = TAILQ_LAST(&tabshead, tabshead);
480 	switch_to_tab(t);
481 }
482 
483 void
484 cmd_tab_move(struct buffer *buffer)
485 {
486 	struct tab *t;
487 
488 	t = TAILQ_NEXT(current_tab, tabs);
489 	TAILQ_REMOVE(&tabshead, current_tab, tabs);
490 
491 	if (t == NULL)
492 		TAILQ_INSERT_HEAD(&tabshead, current_tab, tabs);
493 	else
494 		TAILQ_INSERT_AFTER(&tabshead, t, current_tab, tabs);
495 }
496 
497 void
498 cmd_tab_move_to(struct buffer *buffer)
499 {
500 	struct tab *t;
501 
502 	t = TAILQ_PREV(current_tab, tabshead, tabs);
503 	TAILQ_REMOVE(&tabshead, current_tab, tabs);
504 
505 	if (t == NULL) {
506 		if (TAILQ_EMPTY(&tabshead))
507 			TAILQ_INSERT_HEAD(&tabshead, current_tab, tabs);
508 		else
509 			TAILQ_INSERT_TAIL(&tabshead, current_tab, tabs);
510 	} else
511 		TAILQ_INSERT_BEFORE(t, current_tab, tabs);
512 }
513 
514 void
515 cmd_tab_select(struct buffer *buffer)
516 {
517 	GUARD_RECURSIVE_MINIBUFFER();
518 
519 	enter_minibuffer(sensible_self_insert, ts_select, exit_minibuffer,
520 	    NULL, compl_ts, NULL);
521 	strlcpy(ministate.prompt, "Select tab: ", sizeof(ministate.prompt));
522 }
523 
524 void
525 cmd_load_url(struct buffer *buffer)
526 {
527 	GUARD_RECURSIVE_MINIBUFFER();
528 
529 	enter_minibuffer(sensible_self_insert, lu_select, exit_minibuffer,
530 	    &lu_history, NULL, NULL);
531 	strlcpy(ministate.prompt, "Load URL: ", sizeof(ministate.prompt));
532 	strlcpy(ministate.buf, "gemini://", sizeof(ministate.buf));
533 	cmd_move_end_of_line(&ministate.buffer);
534 }
535 
536 void
537 cmd_load_current_url(struct buffer *buffer)
538 {
539 	GUARD_RECURSIVE_MINIBUFFER();
540 
541 	enter_minibuffer(sensible_self_insert, lu_select, exit_minibuffer,
542 	    &lu_history, NULL, NULL);
543 	strlcpy(ministate.prompt, "Load URL: ", sizeof(ministate.prompt));
544 	strlcpy(ministate.buf, current_tab->hist_cur->h, sizeof(ministate.buf));
545 	ministate.buffer.cpoff = utf8_cplen(ministate.buf);
546 }
547 
548 void
549 cmd_reload_page(struct buffer *buffer)
550 {
551 	load_url_in_tab(current_tab, current_tab->hist_cur->h);
552 }
553 
554 void
555 cmd_bookmark_page(struct buffer *buffer)
556 {
557 	GUARD_RECURSIVE_MINIBUFFER();
558 
559 	enter_minibuffer(sensible_self_insert, bp_select, exit_minibuffer, NULL,
560 	    NULL, NULL);
561 	strlcpy(ministate.prompt, "Bookmark URL: ", sizeof(ministate.prompt));
562 	strlcpy(ministate.buf, current_tab->hist_cur->h, sizeof(ministate.buf));
563 	ministate.buffer.cpoff = utf8_cplen(ministate.buf);
564 }
565 
566 void
567 cmd_list_bookmarks(struct buffer *buffer)
568 {
569 	load_url_in_tab(current_tab, "about:bookmarks");
570 }
571 
572 void
573 cmd_toggle_help(struct buffer *buffer)
574 {
575 	ui_toggle_side_window();
576 }
577 
578 void
579 cmd_link_select(struct buffer *buffer)
580 {
581 	struct line *l;
582 
583 	GUARD_RECURSIVE_MINIBUFFER();
584 
585 	l = TAILQ_FIRST(&buffer->page.head);
586 	while (l != NULL && l->type != LINE_LINK)
587 		l = TAILQ_NEXT(l, lines);
588 
589 	if (l == NULL) {
590 		message("No links found");
591 		return;
592 	}
593 
594 	enter_minibuffer(sensible_self_insert, ls_select, exit_minibuffer,
595 	    NULL, compl_ls, l);
596 	strlcpy(ministate.prompt, "Select link: ", sizeof(ministate.prompt));
597 }
598 
599 void
600 cmd_swiper(struct buffer *buffer)
601 {
602 	GUARD_RECURSIVE_MINIBUFFER();
603 
604 	enter_minibuffer(sensible_self_insert, swiper_select, exit_minibuffer,
605 	    NULL, compl_swiper, TAILQ_FIRST(&buffer->page.head));
606 	strlcpy(ministate.prompt, "Select line: ", sizeof(ministate.prompt));
607 }
608 
609 void
610 cmd_toc(struct buffer *buffer)
611 {
612 	struct line *l;
613 
614 	GUARD_RECURSIVE_MINIBUFFER();
615 
616 	l = TAILQ_FIRST(&buffer->page.head);
617 	while (l != NULL &&
618 	    l->type != LINE_TITLE_1 &&
619 	    l->type != LINE_TITLE_2 &&
620 	    l->type != LINE_TITLE_3)
621 		l = TAILQ_NEXT(l, lines);
622 
623 	if (l == NULL) {
624 		message("No headings found");
625 		return;
626 	}
627 
628 	enter_minibuffer(sensible_self_insert, toc_select, exit_minibuffer,
629 	    NULL, compl_toc, l);
630 	strlcpy(ministate.prompt, "Select heading: ",
631 	    sizeof(ministate.prompt));
632 }
633 
634 void
635 cmd_inc_fill_column(struct buffer *buffer)
636 {
637 	if (fill_column == INT_MAX)
638 		return;
639 
640 	fill_column += 2;
641 	message("fill-column: %d", fill_column);
642 
643 	ui_schedule_redraw();
644 }
645 
646 void
647 cmd_dec_fill_column(struct buffer *buffer)
648 {
649 	if (fill_column == INT_MAX || fill_column < 8)
650 		return;
651 
652 	fill_column -= 2;
653 	message("fill-column: %d", fill_column);
654 
655 	ui_schedule_redraw();
656 }
657 
658 void
659 cmd_olivetti_mode(struct buffer *buffer)
660 {
661 	olivetti_mode = !olivetti_mode;
662 	if (olivetti_mode)
663 		message("olivetti-mode enabled");
664 	else
665 		message("olivetti-mode disabled");
666 
667 	ui_schedule_redraw();
668 }
669 
670 void
671 cmd_mini_delete_char(struct buffer *buffer)
672 {
673 	char *c, *n;
674 
675 	GUARD_READ_ONLY();
676 
677 	minibuffer_taint_hist();
678 
679 	c = utf8_nth(buffer->current_line->line, buffer->cpoff);
680 	if (*c == '\0')
681 		return;
682 	n = utf8_next_cp(c);
683 
684 	memmove(c, n, strlen(n)+1);
685 
686 	recompute_completions(0);
687 }
688 
689 void
690 cmd_mini_delete_backward_char(struct buffer *buffer)
691 {
692 	char *c, *p, *start;
693 
694 	GUARD_READ_ONLY();
695 
696 	minibuffer_taint_hist();
697 
698 	c = utf8_nth(buffer->current_line->line, buffer->cpoff);
699 	start = buffer->current_line->line;
700 	if (c == start)
701 		return;
702 	p = utf8_prev_cp(c-1, start);
703 
704 	memmove(p, c, strlen(c)+1);
705 	buffer->cpoff--;
706 
707 	recompute_completions(0);
708 }
709 
710 void
711 cmd_mini_kill_line(struct buffer *buffer)
712 {
713 	char *c;
714 
715 	GUARD_READ_ONLY();
716 
717 	minibuffer_taint_hist();
718 	c = utf8_nth(buffer->current_line->line, buffer->cpoff);
719 	*c = '\0';
720 
721 	recompute_completions(0);
722 }
723 
724 void
725 cmd_mini_abort(struct buffer *buffer)
726 {
727 	if (!in_minibuffer)
728 		return;
729 
730 	ministate.abortfn();
731 }
732 
733 void
734 cmd_mini_complete_and_exit(struct buffer *buffer)
735 {
736 	if (!in_minibuffer)
737 		return;
738 
739 	minibuffer_taint_hist();
740 	ministate.donefn();
741 }
742 
743 void
744 cmd_mini_previous_history_element(struct buffer *buffer)
745 {
746 	if (ministate.history == NULL) {
747 		message("No history");
748 		return;
749 	}
750 
751 	if (ministate.hist_cur == NULL ||
752 	    (ministate.hist_cur = TAILQ_PREV(ministate.hist_cur, mhisthead, entries)) == NULL) {
753 		ministate.hist_cur = TAILQ_LAST(&ministate.history->head, mhisthead);
754 		ministate.hist_off = ministate.history->len - 1;
755 		if (ministate.hist_cur == NULL)
756 			message("No prev history item");
757 	} else {
758 		ministate.hist_off--;
759 	}
760 
761 	if (ministate.hist_cur != NULL)
762 		buffer->current_line->line = ministate.hist_cur->h;
763 }
764 
765 void
766 cmd_mini_next_history_element(struct buffer *buffer)
767 {
768 	if (ministate.history == NULL) {
769 		message("No history");
770 		return;
771 	}
772 
773 	if (ministate.hist_cur == NULL ||
774 	    (ministate.hist_cur = TAILQ_NEXT(ministate.hist_cur, entries)) == NULL) {
775 		ministate.hist_cur = TAILQ_FIRST(&ministate.history->head);
776 		ministate.hist_off = 0;
777 		if (ministate.hist_cur == NULL)
778 			message("No next history item");
779 	} else {
780 		ministate.hist_off++;
781 	}
782 
783 	if (ministate.hist_cur != NULL)
784 		buffer->current_line->line = ministate.hist_cur->h;
785 }
786 
787 void
788 cmd_previous_completion(struct buffer *buffer)
789 {
790 	if (in_minibuffer != MB_COMPREAD)
791 		return;
792 
793 	buffer = &ministate.compl.buffer;
794 
795 	if (buffer->current_line != NULL)
796 		buffer->current_line->parent->type = LINE_COMPL;
797 
798 	forward_line(buffer, -1);
799 
800 	if (buffer->current_line != NULL)
801 		buffer->current_line->parent->type = LINE_COMPL_CURRENT;
802 }
803 
804 void
805 cmd_next_completion(struct buffer *buffer)
806 {
807 	if (in_minibuffer != MB_COMPREAD)
808 		return;
809 
810 	buffer = &ministate.compl.buffer;
811 
812 	if (buffer->current_line != NULL)
813 		buffer->current_line->parent->type = LINE_COMPL;
814 
815 	forward_line(buffer, +1);
816 
817 	if (buffer->current_line != NULL)
818 		buffer->current_line->parent->type = LINE_COMPL_CURRENT;
819 }
820 
821 void
822 cmd_insert_current_candidate(struct buffer *buffer)
823 {
824 	struct vline *vl;
825 
826 	if (in_minibuffer != MB_COMPREAD)
827 		return;
828 
829 	buffer = &ministate.compl.buffer;
830 	if ((vl = buffer->current_line) == NULL)
831 		return;
832 
833 	minibuffer_taint_hist();
834 	strlcpy(ministate.buf, vl->parent->line, sizeof(ministate.buf));
835 	ministate.buffer.cpoff = utf8_cplen(ministate.buf);
836 }
837 
838 void
839 cmd_suspend_telescope(struct buffer *buffer)
840 {
841 	message("Zzz...");
842 	ui_suspend();
843 }
844 
845 void
846 cmd_toggle_pre_wrap(struct buffer *buffer)
847 {
848 	dont_wrap_pre = !dont_wrap_pre;
849 
850 	if (dont_wrap_pre)
851 		message("Don't wrap preformatted blocks");
852 	else
853 		message("Wrap preformatted blocks");
854 
855 	ui_schedule_redraw();
856 }
857 
858 void
859 cmd_mini_goto_beginning(struct buffer *buffer)
860 {
861 	struct vline *vl;
862 
863 	if (!in_minibuffer)
864 		return;
865 
866 	buffer = &ministate.compl.buffer;
867 
868 	if ((vl = buffer->current_line) != NULL)
869 		vl->parent->type = LINE_COMPL;
870 
871 	vl = TAILQ_FIRST(&buffer->head);
872 	while (vl != NULL && vl->parent->flags & L_HIDDEN)
873 		vl = TAILQ_NEXT(vl, vlines);
874 
875 	if (vl == NULL)
876 		return;
877 
878 	vl->parent->type = LINE_COMPL_CURRENT;
879 	buffer->top_line = vl;
880 	buffer->current_line = vl;
881 }
882 
883 void
884 cmd_mini_goto_end(struct buffer *buffer)
885 {
886 	struct vline *vl;
887 
888 	if (!in_minibuffer)
889 		return;
890 
891 	buffer = &ministate.compl.buffer;
892 
893 	if ((vl = buffer->current_line) != NULL)
894 		vl->parent->type = LINE_COMPL;
895 
896 	vl = TAILQ_LAST(&buffer->head, vhead);
897 	while (vl != NULL && vl->parent->flags & L_HIDDEN)
898 		vl = TAILQ_PREV(vl, vhead, vlines);
899 
900 	if (vl == NULL)
901 		return;
902 
903 	vl->parent->type = LINE_COMPL_CURRENT;
904 	buffer->current_line = vl;
905 }