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Date:: Sat Aug 14 20:52:22 2021 UTC
Message:: move more stuff outta telescope.c
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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 "compat.h"
18 
19 #include <limits.h>
20 #include <stdlib.h>
21 #include <string.h>
22 
23 #include "compl.h"
24 #include "defaults.h"
25 #include "minibuffer.h"
26 #include "session.h"
27 #include "telescope.h"
28 #include "ui.h"
29 #include "utf8.h"
30 
31 #define GUARD_RECURSIVE_MINIBUFFER()				\
32 	do {							\
33 		if (in_minibuffer) {				\
34 			message("enable-recursive-minibuffers " \
35 			    "is not yet available.");		\
36 			return;					\
37 		}						\
38 	} while(0)
39 
40 #define GUARD_READ_ONLY()				\
41 	do {						\
42 		if (!in_minibuffer) {			\
43 			message("text is read-only");	\
44 			return;				\
45 		}					\
46 	} while(0)
47 
48 /* return 1 if moved, 0 otherwise */
49 static inline int
50 forward_line(struct buffer *buffer, int n)
51 {
52 	struct vline *vl;
53 	int did;
54 
55 	if (buffer->current_line == NULL)
56 		return 0;
57 	vl = buffer->current_line;
58 
59 	did = 0;
60 	while (n != 0) {
61 		if (n > 0) {
62 			vl = TAILQ_NEXT(vl, vlines);
63 			if (vl == NULL)
64 				return did;
65 			if (vl->parent->flags & L_HIDDEN)
66 				continue;
67 			buffer->current_line = vl;
68 			n--;
69 		} else {
70 			vl = TAILQ_PREV(vl, vhead, vlines);
71 			if (vl == NULL)
72 				return did;
73 			if (vl->parent->flags & L_HIDDEN)
74 				continue;
75 			if (buffer->current_line == buffer->top_line) {
76 				buffer->line_off--;
77 				buffer->top_line = vl;
78 			}
79 			buffer->current_line = vl;
80 			n++;
81 		}
82 
83 		did = 1;
84 	}
85 
86 	return did;
87 }
88 
89 void
90 cmd_previous_line(struct buffer *buffer)
91 {
92 	forward_line(buffer, -1);
93 }
94 
95 void
96 cmd_next_line(struct buffer *buffer)
97 {
98 	forward_line(buffer, +1);
99 }
100 
101 void
102 cmd_backward_char(struct buffer *buffer)
103 {
104 	if (buffer->cpoff != 0)
105 		buffer->cpoff--;
106 }
107 
108 void
109 cmd_forward_char(struct buffer *buffer)
110 {
111 	size_t len = 0;
112 
113 	if (buffer->current_line == NULL)
114 		return;
115 
116 	if (buffer->current_line->line != NULL)
117 		len = utf8_cplen(buffer->current_line->line);
118 	if (++buffer->cpoff > len)
119 		buffer->cpoff = len;
120 }
121 
122 void
123 cmd_backward_paragraph(struct buffer *buffer)
124 {
125 	do {
126 		if (!forward_line(buffer, -1)) {
127 			message("No previous paragraph");
128 			return;
129 		}
130 	} while (buffer->current_line->line != NULL ||
131 	    buffer->current_line->parent->type != LINE_TEXT);
132 }
133 
134 void
135 cmd_forward_paragraph(struct buffer *buffer)
136 {
137 	do {
138 		if (!forward_line(buffer, +1)) {
139 			message("No next paragraph");
140 			return;
141 		}
142 	} while (buffer->current_line->line != NULL ||
143 	    buffer->current_line->parent->type != LINE_TEXT);
144 }
145 
146 void
147 cmd_move_beginning_of_line(struct buffer *buffer)
148 {
149 	buffer->cpoff = 0;
150 }
151 
152 void
153 cmd_move_end_of_line(struct buffer *buffer)
154 {
155 	struct vline	*vl;
156 
157 	vl = buffer->current_line;
158 	if (vl == NULL || vl->line == NULL)
159 		return;
160 	buffer->cpoff = utf8_cplen(vl->line);
161 }
162 
163 void
164 cmd_redraw(struct buffer *buffer)
165 {
166         ui_schedule_redraw();
167 }
168 
169 void
170 cmd_scroll_line_up(struct buffer *buffer)
171 {
172 	struct vline	*vl;
173 
174 	for (;;) {
175 		if (buffer->top_line == NULL)
176 			return;
177 
178 		if ((vl = TAILQ_PREV(buffer->top_line, vhead, vlines))
179 		    == NULL)
180 			return;
181 
182 		buffer->top_line = vl;
183 
184 		if (vl->parent->flags & L_HIDDEN)
185 			continue;
186 
187 		break;
188 	}
189 
190 	buffer->line_off--;
191 
192 	forward_line(buffer, -1);
193 }
194 
195 void
196 cmd_scroll_line_down(struct buffer *buffer)
197 {
198 	if (!forward_line(buffer, +1))
199 		return;
200 
201 	for (;;) {
202 		if (buffer->top_line == NULL)
203 			return;
204 
205 		buffer->top_line = TAILQ_NEXT(buffer->top_line, vlines);
206 		if (buffer->top_line->parent->flags & L_HIDDEN)
207 			continue;
208 		break;
209 	}
210 
211 	buffer->line_off++;
212 }
213 
214 void
215 cmd_scroll_up(struct buffer *buffer)
216 {
217 	struct vline	*vl;
218 	int		 i;
219 
220 	if (buffer->top_line == NULL)
221 		return;
222 
223 	for (i = 0; i < body_lines; ++i) {
224 		vl = TAILQ_PREV(buffer->top_line, vhead, vlines);
225 		if (vl == NULL)
226 			break;
227 		buffer->line_off--;
228 		buffer->top_line = vl;
229 		forward_line(buffer, -1);
230 	}
231 }
232 
233 void
234 cmd_scroll_down(struct buffer *buffer)
235 {
236 	int i;
237 
238 	if (buffer->top_line == NULL)
239 		return;
240 
241 	for (i = 0; i < body_lines; ++i) {
242 		if (!forward_line(buffer, +1))
243 			break;
244 
245 		buffer->top_line = TAILQ_NEXT(buffer->top_line,
246 		    vlines);
247 		buffer->line_off++;
248 	}
249 }
250 
251 void
252 cmd_beginning_of_buffer(struct buffer *buffer)
253 {
254 	buffer->current_line = TAILQ_FIRST(&buffer->head);
255 	buffer->cpoff = 0;
256 	buffer->top_line = buffer->current_line;
257 	buffer->line_off = 0;
258 }
259 
260 void
261 cmd_end_of_buffer(struct buffer *buffer)
262 {
263 	buffer->current_line = TAILQ_LAST(&buffer->head, vhead);
264 
265 	if (buffer->current_line == NULL)
266 		return;
267 
268 	/* deal with invisible lines */
269 	if (buffer->current_line->parent->flags & L_HIDDEN)
270 		forward_line(buffer, -1);
271 
272 	cmd_move_end_of_line(buffer);
273 }
274 
275 void
276 cmd_kill_telescope(struct buffer *buffer)
277 {
278 	save_session();
279 	event_loopbreak();
280 }
281 
282 void
283 cmd_push_button(struct buffer *buffer)
284 {
285 	struct vline	*vl;
286 	struct line	*l;
287 
288 	vl = buffer->current_line;
289 
290 	if (vl == NULL)
291 		return;
292 
293 	switch (vl->parent->type) {
294 	case LINE_LINK:
295 		load_url_in_tab(current_tab, vl->parent->alt, NULL, 0);
296 		break;
297 	case LINE_PRE_START:
298 		l = TAILQ_NEXT(vl->parent, lines);
299 		for (; l != NULL; l = TAILQ_NEXT(l, lines)) {
300 			if (l->type == LINE_PRE_END)
301 				break;
302 			l->flags ^= L_HIDDEN;
303 			if (l->flags & L_HIDDEN)
304 				buffer->line_max--;
305 			else
306 				buffer->line_max++;
307 		}
308 		break;
309 	default:
310 		break;
311 	}
312 }
313 
314 void
315 cmd_push_button_new_tab(struct buffer *buffer)
316 {
317 	struct vline	*vl;
318 
319 	vl = buffer->current_line;
320 	if (vl == NULL || vl->parent->type != LINE_LINK)
321 		return;
322 
323 	new_tab(vl->parent->alt, current_tab->hist_cur->h, current_tab);
324 }
325 
326 void
327 cmd_previous_button(struct buffer *buffer)
328 {
329 	struct excursion place;
330 
331 	save_excursion(&place, buffer);
332 
333 	do {
334 		if (!forward_line(buffer, -1)) {
335 			restore_excursion(&place, buffer);
336 			message("No previous link");
337 			return;
338 		}
339 	} while (buffer->current_line->parent->type != LINE_LINK);
340 }
341 
342 void
343 cmd_next_button(struct buffer *buffer)
344 {
345 	struct excursion place;
346 
347 	save_excursion(&place, buffer);
348 
349 	do {
350 		if (!forward_line(buffer, +1)){
351 			restore_excursion(&place, buffer);
352 			message("No next link");
353 			return;
354 		}
355 	} while (buffer->current_line->parent->type != LINE_LINK);
356 }
357 
358 static inline int
359 is_heading(const struct line *l)
360 {
361 	return l->type == LINE_TITLE_1 ||
362 		l->type == LINE_TITLE_2 ||
363 		l->type == LINE_TITLE_3;
364 }
365 
366 void
367 cmd_previous_heading(struct buffer *buffer)
368 {
369 	struct excursion place;
370 
371 	save_excursion(&place, buffer);
372 
373 	do {
374 		if (!forward_line(buffer, -1)) {
375 			restore_excursion(&place, buffer);
376 			message("No previous heading");
377 			return;
378 		}
379 	} while (!is_heading(buffer->current_line->parent));
380 }
381 
382 void
383 cmd_next_heading(struct buffer *buffer)
384 {
385 	struct excursion place;
386 
387 	save_excursion(&place, buffer);
388 
389 	do {
390 		if (!forward_line(buffer, +1)) {
391 			restore_excursion(&place, buffer);
392 			message("No next heading");
393 			return;
394 		}
395 	} while (!is_heading(buffer->current_line->parent));
396 }
397 
398 void
399 cmd_previous_page(struct buffer *buffer)
400 {
401 	if (!load_previous_page(current_tab))
402 		message("No previous page");
403 	else
404 		start_loading_anim(current_tab);
405 }
406 
407 void
408 cmd_next_page(struct buffer *buffer)
409 {
410 	if (!load_next_page(current_tab))
411 		message("No next page");
412 	else
413 		start_loading_anim(current_tab);
414 }
415 
416 void
417 cmd_clear_minibuf(struct buffer *buffer)
418 {
419         message(NULL);
420 }
421 
422 void
423 cmd_execute_extended_command(struct buffer *buffer)
424 {
425 	size_t	 len;
426 
427 	GUARD_RECURSIVE_MINIBUFFER();
428 
429 	enter_minibuffer(sensible_self_insert, eecmd_select, exit_minibuffer,
430 	    &eecmd_history, compl_eecmd, NULL);
431 
432 	len = sizeof(ministate.prompt);
433 	strlcpy(ministate.prompt, "", len);
434 
435 	if (thiskey.meta)
436 		strlcat(ministate.prompt, "M-", len);
437 
438 	strlcat(ministate.prompt, ui_keyname(thiskey.key), len);
439 
440 	if (thiskey.meta)
441 		strlcat(ministate.prompt, " ", len);
442 }
443 
444 void
445 cmd_tab_close(struct buffer *buffer)
446 {
447 	struct tab *tab, *t;
448 
449 	tab = current_tab;
450 
451 	if ((t = TAILQ_NEXT(tab, tabs)) != NULL ||
452 	    (t = TAILQ_PREV(tab, tabshead, tabs)) != NULL) {
453 		switch_to_tab(t);
454 		free_tab(tab);
455 	} else
456 		message("Can't close the only tab.");
457 
458 }
459 
460 void
461 cmd_tab_close_other(struct buffer *buffer)
462 {
463 	struct tab *t, *i;
464 
465 	TAILQ_FOREACH_SAFE(t, &tabshead, tabs, i) {
466 		if (t == current_tab)
467 			continue;
468 
469 		free_tab(t);
470 	}
471 }
472 
473 void
474 cmd_tab_new(struct buffer *buffer)
475 {
476 	const char *url;
477 
478 	if ((url = new_tab_url) == NULL)
479 		url = NEW_TAB_URL;
480 
481 	new_tab(url, NULL, NULL);
482 }
483 
484 void
485 cmd_tab_next(struct buffer *buffer)
486 {
487 	struct tab *t;
488 
489 	if ((t = TAILQ_NEXT(current_tab, tabs)) == NULL)
490 		t = TAILQ_FIRST(&tabshead);
491 	switch_to_tab(t);
492 }
493 
494 void
495 cmd_tab_previous(struct buffer *buffer)
496 {
497 	struct tab *t;
498 
499 	if ((t = TAILQ_PREV(current_tab, tabshead, tabs)) == NULL)
500 		t = TAILQ_LAST(&tabshead, tabshead);
501 	switch_to_tab(t);
502 }
503 
504 void
505 cmd_tab_move(struct buffer *buffer)
506 {
507 	struct tab *t;
508 
509 	t = TAILQ_NEXT(current_tab, tabs);
510 	TAILQ_REMOVE(&tabshead, current_tab, tabs);
511 
512 	if (t == NULL)
513 		TAILQ_INSERT_HEAD(&tabshead, current_tab, tabs);
514 	else
515 		TAILQ_INSERT_AFTER(&tabshead, t, current_tab, tabs);
516 }
517 
518 void
519 cmd_tab_move_to(struct buffer *buffer)
520 {
521 	struct tab *t;
522 
523 	t = TAILQ_PREV(current_tab, tabshead, tabs);
524 	TAILQ_REMOVE(&tabshead, current_tab, tabs);
525 
526 	if (t == NULL)
527 		TAILQ_INSERT_TAIL(&tabshead, current_tab, tabs);
528 	else
529 		TAILQ_INSERT_BEFORE(t, current_tab, tabs);
530 }
531 
532 void
533 cmd_tab_select(struct buffer *buffer)
534 {
535 	GUARD_RECURSIVE_MINIBUFFER();
536 
537 	enter_minibuffer(sensible_self_insert, ts_select, exit_minibuffer,
538 	    NULL, compl_ts, NULL);
539 	strlcpy(ministate.prompt, "Select tab: ", sizeof(ministate.prompt));
540 }
541 
542 void
543 cmd_load_url(struct buffer *buffer)
544 {
545 	GUARD_RECURSIVE_MINIBUFFER();
546 
547 	enter_minibuffer(sensible_self_insert, lu_select, exit_minibuffer,
548 	    &lu_history, NULL, NULL);
549 	strlcpy(ministate.prompt, "Load URL: ", sizeof(ministate.prompt));
550 	strlcpy(ministate.buf, "gemini://", sizeof(ministate.buf));
551 	cmd_move_end_of_line(&ministate.buffer);
552 }
553 
554 void
555 cmd_load_current_url(struct buffer *buffer)
556 {
557 	GUARD_RECURSIVE_MINIBUFFER();
558 
559 	enter_minibuffer(sensible_self_insert, lu_select, exit_minibuffer,
560 	    &lu_history, NULL, NULL);
561 	strlcpy(ministate.prompt, "Load 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_reload_page(struct buffer *buffer)
568 {
569 	load_url_in_tab(current_tab, current_tab->hist_cur->h, NULL, 1);
570 }
571 
572 void
573 cmd_bookmark_page(struct buffer *buffer)
574 {
575 	GUARD_RECURSIVE_MINIBUFFER();
576 
577 	enter_minibuffer(sensible_self_insert, bp_select, exit_minibuffer, NULL,
578 	    NULL, NULL);
579 	strlcpy(ministate.prompt, "Bookmark URL: ", sizeof(ministate.prompt));
580 	strlcpy(ministate.buf, current_tab->hist_cur->h, sizeof(ministate.buf));
581 	ministate.buffer.cpoff = utf8_cplen(ministate.buf);
582 }
583 
584 void
585 cmd_list_bookmarks(struct buffer *buffer)
586 {
587 	load_url_in_tab(current_tab, "about:bookmarks", NULL, 0);
588 }
589 
590 void
591 cmd_toggle_help(struct buffer *buffer)
592 {
593 	ui_toggle_side_window();
594 }
595 
596 void
597 cmd_link_select(struct buffer *buffer)
598 {
599 	struct line *l;
600 
601 	GUARD_RECURSIVE_MINIBUFFER();
602 
603 	l = TAILQ_FIRST(&buffer->page.head);
604 	while (l != NULL && l->type != LINE_LINK)
605 		l = TAILQ_NEXT(l, lines);
606 
607 	if (l == NULL) {
608 		message("No links found");
609 		return;
610 	}
611 
612 	enter_minibuffer(sensible_self_insert, ls_select, exit_minibuffer,
613 	    NULL, compl_ls, l);
614 	strlcpy(ministate.prompt, "Select link: ", sizeof(ministate.prompt));
615 }
616 
617 void
618 cmd_swiper(struct buffer *buffer)
619 {
620 	GUARD_RECURSIVE_MINIBUFFER();
621 
622 	enter_minibuffer(sensible_self_insert, swiper_select, exit_minibuffer,
623 	    NULL, compl_swiper, TAILQ_FIRST(&buffer->page.head));
624 	strlcpy(ministate.prompt, "Select line: ", sizeof(ministate.prompt));
625 }
626 
627 void
628 cmd_toc(struct buffer *buffer)
629 {
630 	struct line *l;
631 
632 	GUARD_RECURSIVE_MINIBUFFER();
633 
634 	l = TAILQ_FIRST(&buffer->page.head);
635 	while (l != NULL &&
636 	    l->type != LINE_TITLE_1 &&
637 	    l->type != LINE_TITLE_2 &&
638 	    l->type != LINE_TITLE_3)
639 		l = TAILQ_NEXT(l, lines);
640 
641 	if (l == NULL) {
642 		message("No headings found");
643 		return;
644 	}
645 
646 	enter_minibuffer(sensible_self_insert, toc_select, exit_minibuffer,
647 	    NULL, compl_toc, l);
648 	strlcpy(ministate.prompt, "Select heading: ",
649 	    sizeof(ministate.prompt));
650 }
651 
652 void
653 cmd_inc_fill_column(struct buffer *buffer)
654 {
655 	if (fill_column == INT_MAX)
656 		return;
657 
658 	fill_column += 2;
659 	message("fill-column: %d", fill_column);
660 
661 	ui_schedule_redraw();
662 }
663 
664 void
665 cmd_dec_fill_column(struct buffer *buffer)
666 {
667 	if (fill_column == INT_MAX || fill_column < 8)
668 		return;
669 
670 	fill_column -= 2;
671 	message("fill-column: %d", fill_column);
672 
673 	ui_schedule_redraw();
674 }
675 
676 void
677 cmd_olivetti_mode(struct buffer *buffer)
678 {
679 	olivetti_mode = !olivetti_mode;
680 	if (olivetti_mode)
681 		message("olivetti-mode enabled");
682 	else
683 		message("olivetti-mode disabled");
684 
685 	ui_schedule_redraw();
686 }
687 
688 void
689 cmd_mini_delete_char(struct buffer *buffer)
690 {
691 	char *c, *n;
692 
693 	GUARD_READ_ONLY();
694 
695 	minibuffer_taint_hist();
696 
697 	c = utf8_nth(buffer->current_line->line, buffer->cpoff);
698 	if (*c == '\0')
699 		return;
700 	n = utf8_next_cp(c);
701 
702 	memmove(c, n, strlen(n)+1);
703 
704 	recompute_completions(0);
705 }
706 
707 void
708 cmd_mini_delete_backward_char(struct buffer *buffer)
709 {
710 	char *c, *p, *start;
711 
712 	GUARD_READ_ONLY();
713 
714 	minibuffer_taint_hist();
715 
716 	c = utf8_nth(buffer->current_line->line, buffer->cpoff);
717 	start = buffer->current_line->line;
718 	if (c == start)
719 		return;
720 	p = utf8_prev_cp(c-1, start);
721 
722 	memmove(p, c, strlen(c)+1);
723 	buffer->cpoff--;
724 
725 	recompute_completions(0);
726 }
727 
728 void
729 cmd_mini_kill_line(struct buffer *buffer)
730 {
731 	char *c;
732 
733 	GUARD_READ_ONLY();
734 
735 	minibuffer_taint_hist();
736 	c = utf8_nth(buffer->current_line->line, buffer->cpoff);
737 	*c = '\0';
738 
739 	recompute_completions(0);
740 }
741 
742 void
743 cmd_mini_abort(struct buffer *buffer)
744 {
745 	if (!in_minibuffer)
746 		return;
747 
748 	ministate.abortfn();
749 }
750 
751 void
752 cmd_mini_complete_and_exit(struct buffer *buffer)
753 {
754 	if (!in_minibuffer)
755 		return;
756 
757 	minibuffer_taint_hist();
758 	ministate.donefn();
759 }
760 
761 void
762 cmd_mini_previous_history_element(struct buffer *buffer)
763 {
764 	if (ministate.history == NULL) {
765 		message("No history");
766 		return;
767 	}
768 
769 	if (ministate.hist_cur == NULL ||
770 	    (ministate.hist_cur = TAILQ_PREV(ministate.hist_cur, mhisthead, entries)) == NULL) {
771 		ministate.hist_cur = TAILQ_LAST(&ministate.history->head, mhisthead);
772 		ministate.hist_off = ministate.history->len - 1;
773 		if (ministate.hist_cur == NULL)
774 			message("No prev history item");
775 	} else {
776 		ministate.hist_off--;
777 	}
778 
779 	if (ministate.hist_cur != NULL)
780 		buffer->current_line->line = ministate.hist_cur->h;
781 }
782 
783 void
784 cmd_mini_next_history_element(struct buffer *buffer)
785 {
786 	if (ministate.history == NULL) {
787 		message("No history");
788 		return;
789 	}
790 
791 	if (ministate.hist_cur == NULL ||
792 	    (ministate.hist_cur = TAILQ_NEXT(ministate.hist_cur, entries)) == NULL) {
793 		ministate.hist_cur = TAILQ_FIRST(&ministate.history->head);
794 		ministate.hist_off = 0;
795 		if (ministate.hist_cur == NULL)
796 			message("No next history item");
797 	} else {
798 		ministate.hist_off++;
799 	}
800 
801 	if (ministate.hist_cur != NULL)
802 		buffer->current_line->line = ministate.hist_cur->h;
803 }
804 
805 void
806 cmd_previous_completion(struct buffer *buffer)
807 {
808 	if (in_minibuffer != MB_COMPREAD)
809 		return;
810 
811 	buffer = &ministate.compl.buffer;
812 
813 	if (buffer->current_line != NULL)
814 		buffer->current_line->parent->type = LINE_COMPL;
815 
816 	forward_line(buffer, -1);
817 
818 	if (buffer->current_line != NULL)
819 		buffer->current_line->parent->type = LINE_COMPL_CURRENT;
820 }
821 
822 void
823 cmd_next_completion(struct buffer *buffer)
824 {
825 	if (in_minibuffer != MB_COMPREAD)
826 		return;
827 
828 	buffer = &ministate.compl.buffer;
829 
830 	if (buffer->current_line != NULL)
831 		buffer->current_line->parent->type = LINE_COMPL;
832 
833 	forward_line(buffer, +1);
834 
835 	if (buffer->current_line != NULL)
836 		buffer->current_line->parent->type = LINE_COMPL_CURRENT;
837 }
838 
839 void
840 cmd_insert_current_candidate(struct buffer *buffer)
841 {
842 	struct vline *vl;
843 
844 	if (in_minibuffer != MB_COMPREAD)
845 		return;
846 
847 	buffer = &ministate.compl.buffer;
848 	if ((vl = buffer->current_line) == NULL)
849 		return;
850 
851 	minibuffer_taint_hist();
852 	strlcpy(ministate.buf, vl->parent->line, sizeof(ministate.buf));
853 	ministate.buffer.cpoff = utf8_cplen(ministate.buf);
854 }
855 
856 void
857 cmd_suspend_telescope(struct buffer *buffer)
858 {
859 	message("Zzz...");
860 	ui_suspend();
861 }
862 
863 void
864 cmd_toggle_pre_wrap(struct buffer *buffer)
865 {
866 	dont_wrap_pre = !dont_wrap_pre;
867 
868 	if (dont_wrap_pre)
869 		message("Don't wrap preformatted blocks");
870 	else
871 		message("Wrap preformatted blocks");
872 
873 	ui_schedule_redraw();
874 }
875 
876 void
877 cmd_mini_goto_beginning(struct buffer *buffer)
878 {
879 	struct vline *vl;
880 
881 	if (!in_minibuffer)
882 		return;
883 
884 	buffer = &ministate.compl.buffer;
885 
886 	if ((vl = buffer->current_line) != NULL)
887 		vl->parent->type = LINE_COMPL;
888 
889 	vl = TAILQ_FIRST(&buffer->head);
890 	while (vl != NULL && vl->parent->flags & L_HIDDEN)
891 		vl = TAILQ_NEXT(vl, vlines);
892 
893 	if (vl == NULL)
894 		return;
895 
896 	vl->parent->type = LINE_COMPL_CURRENT;
897 	buffer->top_line = vl;
898 	buffer->current_line = vl;
899 }
900 
901 void
902 cmd_mini_goto_end(struct buffer *buffer)
903 {
904 	struct vline *vl;
905 
906 	if (!in_minibuffer)
907 		return;
908 
909 	buffer = &ministate.compl.buffer;
910 
911 	if ((vl = buffer->current_line) != NULL)
912 		vl->parent->type = LINE_COMPL;
913 
914 	vl = TAILQ_LAST(&buffer->head, vhead);
915 	while (vl != NULL && vl->parent->flags & L_HIDDEN)
916 		vl = TAILQ_PREV(vl, vhead, vlines);
917 
918 	if (vl == NULL)
919 		return;
920 
921 	vl->parent->type = LINE_COMPL_CURRENT;
922 	buffer->current_line = vl;
923 }
924 
925 void
926 cmd_other_window(struct buffer *buffer)
927 {
928 	ui_other_window();
929 }
930 
931 void
932 cmd_mini_scroll_up(struct buffer *buffer)
933 {
934 	if (!in_minibuffer)
935 		return;
936 
937         buffer = &ministate.compl.buffer;
938 	if (buffer->current_line == NULL)
939 		return;
940 
941 	buffer->current_line->parent->type = LINE_COMPL;
942 	cmd_scroll_up(buffer);
943 	buffer->current_line->parent->type = LINE_COMPL_CURRENT;
944 }
945 
946 void
947 cmd_mini_scroll_down(struct buffer *buffer)
948 {
949 	if (!in_minibuffer)
950 		return;
951 
952         buffer = &ministate.compl.buffer;
953 	if (buffer->current_line == NULL)
954 		return;
955 
956 	buffer->current_line->parent->type = LINE_COMPL;
957 	cmd_scroll_down(buffer);
958 	buffer->current_line->parent->type = LINE_COMPL_CURRENT;
959 }