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Date:: Sat Feb 26 17:45:38 2022 UTC
Message:: add compl_lu completion function for load-url and load-current-url
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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 "mcache.h"
26 #include "minibuffer.h"
27 #include "session.h"
28 #include "telescope.h"
29 #include "ui.h"
30 #include "utf8.h"
31 #include "utils.h"
32 
33 #define GUARD_RECURSIVE_MINIBUFFER()				\
34 	do {							\
35 		if (in_minibuffer) {				\
36 			message("enable-recursive-minibuffers " \
37 			    "is not yet available.");		\
38 			return;					\
39 		}						\
40 	} while(0)
41 
42 #define GUARD_READ_ONLY()				\
43 	do {						\
44 		if (!in_minibuffer) {			\
45 			message("text is read-only");	\
46 			return;				\
47 		}					\
48 	} while(0)
49 
50 /* return 1 if moved, 0 otherwise */
51 static inline int
52 forward_line(struct buffer *buffer, int n)
53 {
54 	struct vline *vl;
55 	int did;
56 
57 	if (buffer->current_line == NULL)
58 		return 0;
59 	vl = buffer->current_line;
60 
61 	did = 0;
62 	while (n != 0) {
63 		if (n > 0) {
64 			vl = TAILQ_NEXT(vl, vlines);
65 			if (vl == NULL)
66 				return did;
67 			if (vl->parent->flags & L_HIDDEN)
68 				continue;
69 			buffer->current_line = vl;
70 			n--;
71 		} else {
72 			vl = TAILQ_PREV(vl, vhead, vlines);
73 			if (vl == NULL)
74 				return did;
75 			if (vl->parent->flags & L_HIDDEN)
76 				continue;
77 			if (buffer->current_line == buffer->top_line) {
78 				buffer->line_off--;
79 				buffer->top_line = vl;
80 			}
81 			buffer->current_line = vl;
82 			n++;
83 		}
84 
85 		did = 1;
86 	}
87 
88 	return did;
89 }
90 
91 void
92 cmd_previous_line(struct buffer *buffer)
93 {
94 	forward_line(buffer, -1);
95 }
96 
97 void
98 cmd_next_line(struct buffer *buffer)
99 {
100 	forward_line(buffer, +1);
101 }
102 
103 void
104 cmd_backward_char(struct buffer *buffer)
105 {
106 	if (buffer->cpoff != 0)
107 		buffer->cpoff--;
108 }
109 
110 void
111 cmd_forward_char(struct buffer *buffer)
112 {
113 	size_t len = 0;
114 
115 	if (buffer->current_line == NULL)
116 		return;
117 
118 	if (buffer->current_line->line != NULL)
119 		len = utf8_cplen(buffer->current_line->line);
120 	if (++buffer->cpoff > len)
121 		buffer->cpoff = len;
122 }
123 
124 void
125 cmd_backward_paragraph(struct buffer *buffer)
126 {
127 	do {
128 		if (!forward_line(buffer, -1)) {
129 			message("No previous paragraph");
130 			return;
131 		}
132 	} while (buffer->current_line->line != NULL ||
133 	    buffer->current_line->parent->type != LINE_TEXT);
134 }
135 
136 void
137 cmd_forward_paragraph(struct buffer *buffer)
138 {
139 	do {
140 		if (!forward_line(buffer, +1)) {
141 			message("No next paragraph");
142 			return;
143 		}
144 	} while (buffer->current_line->line != NULL ||
145 	    buffer->current_line->parent->type != LINE_TEXT);
146 }
147 
148 void
149 cmd_move_beginning_of_line(struct buffer *buffer)
150 {
151 	buffer->cpoff = 0;
152 }
153 
154 void
155 cmd_move_end_of_line(struct buffer *buffer)
156 {
157 	struct vline	*vl;
158 
159 	vl = buffer->current_line;
160 	if (vl == NULL || vl->line == NULL)
161 		return;
162 	buffer->cpoff = utf8_cplen(vl->line);
163 }
164 
165 void
166 cmd_redraw(struct buffer *buffer)
167 {
168 	ui_schedule_redraw();
169 }
170 
171 void
172 cmd_scroll_line_up(struct buffer *buffer)
173 {
174 	struct vline	*vl;
175 
176 	for (;;) {
177 		if (buffer->top_line == NULL)
178 			return;
179 
180 		if ((vl = TAILQ_PREV(buffer->top_line, vhead, vlines))
181 		    == NULL)
182 			return;
183 
184 		buffer->top_line = vl;
185 
186 		if (vl->parent->flags & L_HIDDEN)
187 			continue;
188 
189 		break;
190 	}
191 
192 	buffer->line_off--;
193 
194 	forward_line(buffer, -1);
195 }
196 
197 void
198 cmd_scroll_line_down(struct buffer *buffer)
199 {
200 	if (!forward_line(buffer, +1))
201 		return;
202 
203 	for (;;) {
204 		if (buffer->top_line == NULL)
205 			return;
206 
207 		buffer->top_line = TAILQ_NEXT(buffer->top_line, vlines);
208 		if (buffer->top_line->parent->flags & L_HIDDEN)
209 			continue;
210 		break;
211 	}
212 
213 	buffer->line_off++;
214 }
215 
216 void
217 cmd_scroll_up(struct buffer *buffer)
218 {
219 	struct vline	*vl;
220 	int		 i;
221 
222 	if (buffer->top_line == NULL)
223 		return;
224 
225 	for (i = 0; i < body_lines; ++i) {
226 		vl = TAILQ_PREV(buffer->top_line, vhead, vlines);
227 		if (vl == NULL)
228 			break;
229 		buffer->line_off--;
230 		buffer->top_line = vl;
231 		forward_line(buffer, -1);
232 	}
233 }
234 
235 void
236 cmd_scroll_down(struct buffer *buffer)
237 {
238 	int i;
239 
240 	if (buffer->top_line == NULL)
241 		return;
242 
243 	for (i = 0; i < body_lines; ++i) {
244 		if (!forward_line(buffer, +1))
245 			break;
246 
247 		buffer->top_line = TAILQ_NEXT(buffer->top_line,
248 		    vlines);
249 		buffer->line_off++;
250 	}
251 }
252 
253 void
254 cmd_beginning_of_buffer(struct buffer *buffer)
255 {
256 	buffer->current_line = TAILQ_FIRST(&buffer->head);
257 	buffer->cpoff = 0;
258 	buffer->top_line = buffer->current_line;
259 	buffer->line_off = 0;
260 }
261 
262 void
263 cmd_end_of_buffer(struct buffer *buffer)
264 {
265 	buffer->current_line = TAILQ_LAST(&buffer->head, vhead);
266 
267 	if (buffer->current_line == NULL)
268 		return;
269 
270 	/* deal with invisible lines */
271 	if (buffer->current_line->parent->flags & L_HIDDEN)
272 		forward_line(buffer, -1);
273 
274 	cmd_move_end_of_line(buffer);
275 }
276 
277 static void
278 kill_telescope_cb(int r, struct tab *tab)
279 {
280 	if (r) {
281 		save_session();
282 		event_loopbreak();
283 	}
284 }
285 
286 void
287 cmd_kill_telescope(struct buffer *buffer)
288 {
289 	yornp("really quit?", kill_telescope_cb, NULL);
290 }
291 
292 void
293 cmd_push_button(struct buffer *buffer)
294 {
295 	struct vline	*vl;
296 	struct line	*l;
297 
298 	vl = buffer->current_line;
299 
300 	if (vl == NULL)
301 		return;
302 
303 	switch (vl->parent->type) {
304 	case LINE_LINK:
305 		load_url_in_tab(current_tab, vl->parent->alt, NULL,
306 		    LU_MODE_NOCACHE);
307 		break;
308 	case LINE_PRE_START:
309 		l = TAILQ_NEXT(vl->parent, lines);
310 		for (; l != NULL; l = TAILQ_NEXT(l, lines)) {
311 			if (l->type == LINE_PRE_END)
312 				break;
313 			l->flags ^= L_HIDDEN;
314 			if (l->flags & L_HIDDEN)
315 				buffer->line_max--;
316 			else
317 				buffer->line_max++;
318 		}
319 		break;
320 	default:
321 		break;
322 	}
323 }
324 
325 void
326 cmd_push_button_new_tab(struct buffer *buffer)
327 {
328 	struct vline	*vl;
329 
330 	vl = buffer->current_line;
331 	if (vl == NULL || vl->parent->type != LINE_LINK)
332 		return;
333 
334 	new_tab(vl->parent->alt, current_tab->hist_cur->h, current_tab);
335 }
336 
337 void
338 cmd_previous_button(struct buffer *buffer)
339 {
340 	struct excursion place;
341 
342 	save_excursion(&place, buffer);
343 
344 	do {
345 		if (!forward_line(buffer, -1)) {
346 			restore_excursion(&place, buffer);
347 			message("No previous link");
348 			return;
349 		}
350 	} while (buffer->current_line->parent->type != LINE_LINK);
351 }
352 
353 void
354 cmd_next_button(struct buffer *buffer)
355 {
356 	struct excursion place;
357 
358 	save_excursion(&place, buffer);
359 
360 	do {
361 		if (!forward_line(buffer, +1)){
362 			restore_excursion(&place, buffer);
363 			message("No next link");
364 			return;
365 		}
366 	} while (buffer->current_line->parent->type != LINE_LINK);
367 }
368 
369 static inline int
370 is_heading(const struct line *l)
371 {
372 	return l->type == LINE_TITLE_1 ||
373 		l->type == LINE_TITLE_2 ||
374 		l->type == LINE_TITLE_3;
375 }
376 
377 void
378 cmd_previous_heading(struct buffer *buffer)
379 {
380 	struct excursion place;
381 
382 	save_excursion(&place, buffer);
383 
384 	do {
385 		if (!forward_line(buffer, -1)) {
386 			restore_excursion(&place, buffer);
387 			message("No previous heading");
388 			return;
389 		}
390 	} while (!is_heading(buffer->current_line->parent));
391 }
392 
393 void
394 cmd_next_heading(struct buffer *buffer)
395 {
396 	struct excursion place;
397 
398 	save_excursion(&place, buffer);
399 
400 	do {
401 		if (!forward_line(buffer, +1)) {
402 			restore_excursion(&place, buffer);
403 			message("No next heading");
404 			return;
405 		}
406 	} while (!is_heading(buffer->current_line->parent));
407 }
408 
409 void
410 cmd_previous_page(struct buffer *buffer)
411 {
412 	if (!load_previous_page(current_tab))
413 		message("No previous page");
414 }
415 
416 void
417 cmd_next_page(struct buffer *buffer)
418 {
419 	if (!load_next_page(current_tab))
420 		message("No next page");
421 }
422 
423 void
424 cmd_clear_minibuf(struct buffer *buffer)
425 {
426 	message(NULL);
427 }
428 
429 void
430 cmd_execute_extended_command(struct buffer *buffer)
431 {
432 	size_t	 len;
433 
434 	GUARD_RECURSIVE_MINIBUFFER();
435 
436 	enter_minibuffer(sensible_self_insert, eecmd_select, exit_minibuffer,
437 	    &eecmd_history, compl_eecmd, NULL);
438 
439 	len = sizeof(ministate.prompt);
440 	strlcpy(ministate.prompt, "", len);
441 
442 	if (thiskey.meta)
443 		strlcat(ministate.prompt, "M-", len);
444 
445 	strlcat(ministate.prompt, ui_keyname(thiskey.key), len);
446 
447 	if (thiskey.meta)
448 		strlcat(ministate.prompt, " ", len);
449 }
450 
451 void
452 cmd_tab_close(struct buffer *buffer)
453 {
454 	struct tab *tab, *t;
455 
456 	tab = current_tab;
457 
458 	if ((t = TAILQ_NEXT(tab, tabs)) != NULL ||
459 	    (t = TAILQ_PREV(tab, tabshead, tabs)) != NULL) {
460 		switch_to_tab(t);
461 		kill_tab(tab, 0);
462 	} else
463 		message("Can't close the only tab.");
464 
465 }
466 
467 void
468 cmd_tab_close_other(struct buffer *buffer)
469 {
470 	struct tab *t, *i;
471 
472 	TAILQ_FOREACH_SAFE(t, &tabshead, tabs, i) {
473 		if (t == current_tab)
474 			continue;
475 
476 		kill_tab(t, 0);
477 	}
478 }
479 
480 void
481 cmd_tab_undo_close(struct buffer *buffer)
482 {
483 	struct tab *t;
484 
485 	if ((t = unkill_tab()) == NULL) {
486 		message("No recently-closed tabs");
487 		return;
488 	}
489 
490 	switch_to_tab(t);
491 }
492 
493 void
494 cmd_tab_new(struct buffer *buffer)
495 {
496 	const char *url;
497 
498 	if ((url = new_tab_url) == NULL)
499 		url = NEW_TAB_URL;
500 
501 	new_tab(url, NULL, NULL);
502 }
503 
504 void
505 cmd_tab_next(struct buffer *buffer)
506 {
507 	struct tab *t;
508 
509 	if ((t = TAILQ_NEXT(current_tab, tabs)) == NULL)
510 		t = TAILQ_FIRST(&tabshead);
511 	switch_to_tab(t);
512 }
513 
514 void
515 cmd_tab_previous(struct buffer *buffer)
516 {
517 	struct tab *t;
518 
519 	if ((t = TAILQ_PREV(current_tab, tabshead, tabs)) == NULL)
520 		t = TAILQ_LAST(&tabshead, tabshead);
521 	switch_to_tab(t);
522 }
523 
524 void
525 cmd_tab_move(struct buffer *buffer)
526 {
527 	struct tab *t;
528 
529 	t = TAILQ_NEXT(current_tab, tabs);
530 	TAILQ_REMOVE(&tabshead, current_tab, tabs);
531 
532 	if (t == NULL)
533 		TAILQ_INSERT_HEAD(&tabshead, current_tab, tabs);
534 	else
535 		TAILQ_INSERT_AFTER(&tabshead, t, current_tab, tabs);
536 }
537 
538 void
539 cmd_tab_move_to(struct buffer *buffer)
540 {
541 	struct tab *t;
542 
543 	t = TAILQ_PREV(current_tab, tabshead, tabs);
544 	TAILQ_REMOVE(&tabshead, current_tab, tabs);
545 
546 	if (t == NULL)
547 		TAILQ_INSERT_TAIL(&tabshead, current_tab, tabs);
548 	else
549 		TAILQ_INSERT_BEFORE(t, current_tab, tabs);
550 }
551 
552 void
553 cmd_tab_select(struct buffer *buffer)
554 {
555 	GUARD_RECURSIVE_MINIBUFFER();
556 
557 	enter_minibuffer(sensible_self_insert, ts_select, exit_minibuffer,
558 	    NULL, compl_ts, NULL);
559 	strlcpy(ministate.prompt, "Select tab: ", sizeof(ministate.prompt));
560 }
561 
562 void
563 cmd_load_url(struct buffer *buffer)
564 {
565 	GUARD_RECURSIVE_MINIBUFFER();
566 
567 	enter_minibuffer(sensible_self_insert, lu_select, exit_minibuffer,
568 	    &lu_history, compl_lu, NULL);
569 	strlcpy(ministate.prompt, "Load URL: ", sizeof(ministate.prompt));
570 }
571 
572 void
573 cmd_load_current_url(struct buffer *buffer)
574 {
575 	GUARD_RECURSIVE_MINIBUFFER();
576 
577 	enter_minibuffer(sensible_self_insert, lu_select, exit_minibuffer,
578 	    &lu_history, compl_lu, NULL);
579 	strlcpy(ministate.prompt, "Load 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_reload_page(struct buffer *buffer)
586 {
587 	load_url_in_tab(current_tab, current_tab->hist_cur->h, NULL,
588 	    LU_MODE_NOHIST|LU_MODE_NOCACHE);
589 }
590 
591 void
592 cmd_bookmark_page(struct buffer *buffer)
593 {
594 	GUARD_RECURSIVE_MINIBUFFER();
595 
596 	enter_minibuffer(sensible_self_insert, bp_select, exit_minibuffer, NULL,
597 	    NULL, NULL);
598 	strlcpy(ministate.prompt, "Bookmark URL: ", sizeof(ministate.prompt));
599 	strlcpy(ministate.buf, current_tab->hist_cur->h, sizeof(ministate.buf));
600 	ministate.buffer.cpoff = utf8_cplen(ministate.buf);
601 }
602 
603 void
604 cmd_list_bookmarks(struct buffer *buffer)
605 {
606 	load_url_in_tab(current_tab, "about:bookmarks", NULL, LU_MODE_NONE);
607 }
608 
609 void
610 cmd_toggle_help(struct buffer *buffer)
611 {
612 	ui_toggle_side_window(SIDE_WINDOW_LEFT);
613 }
614 
615 void
616 cmd_link_select(struct buffer *buffer)
617 {
618 	struct line *l;
619 
620 	GUARD_RECURSIVE_MINIBUFFER();
621 
622 	l = TAILQ_FIRST(&buffer->page.head);
623 	while (l != NULL && l->type != LINE_LINK)
624 		l = TAILQ_NEXT(l, lines);
625 
626 	if (l == NULL) {
627 		message("No links found");
628 		return;
629 	}
630 
631 	enter_minibuffer(sensible_self_insert, ls_select, exit_minibuffer,
632 	    NULL, compl_ls, l);
633 	strlcpy(ministate.prompt, "Select link: ", sizeof(ministate.prompt));
634 }
635 
636 void
637 cmd_swiper(struct buffer *buffer)
638 {
639 	GUARD_RECURSIVE_MINIBUFFER();
640 
641 	enter_minibuffer(sensible_self_insert, swiper_select, exit_minibuffer,
642 	    NULL, compl_swiper, TAILQ_FIRST(&buffer->page.head));
643 	strlcpy(ministate.prompt, "Select line: ", sizeof(ministate.prompt));
644 }
645 
646 void
647 cmd_toc(struct buffer *buffer)
648 {
649 	struct line *l;
650 
651 	GUARD_RECURSIVE_MINIBUFFER();
652 
653 	l = TAILQ_FIRST(&buffer->page.head);
654 	while (l != NULL &&
655 	    l->type != LINE_TITLE_1 &&
656 	    l->type != LINE_TITLE_2 &&
657 	    l->type != LINE_TITLE_3)
658 		l = TAILQ_NEXT(l, lines);
659 
660 	if (l == NULL) {
661 		message("No headings found");
662 		return;
663 	}
664 
665 	enter_minibuffer(sensible_self_insert, toc_select, exit_minibuffer,
666 	    NULL, compl_toc, l);
667 	strlcpy(ministate.prompt, "Select heading: ",
668 	    sizeof(ministate.prompt));
669 }
670 
671 void
672 cmd_inc_fill_column(struct buffer *buffer)
673 {
674 	if (fill_column == INT_MAX)
675 		return;
676 
677 	fill_column += 2;
678 	message("fill-column: %d", fill_column);
679 
680 	ui_schedule_redraw();
681 }
682 
683 void
684 cmd_dec_fill_column(struct buffer *buffer)
685 {
686 	if (fill_column == INT_MAX || fill_column < 8)
687 		return;
688 
689 	fill_column -= 2;
690 	message("fill-column: %d", fill_column);
691 
692 	ui_schedule_redraw();
693 }
694 
695 void
696 cmd_olivetti_mode(struct buffer *buffer)
697 {
698 	olivetti_mode = !olivetti_mode;
699 	if (olivetti_mode)
700 		message("olivetti-mode enabled");
701 	else
702 		message("olivetti-mode disabled");
703 
704 	ui_schedule_redraw();
705 }
706 
707 void
708 cmd_mini_delete_char(struct buffer *buffer)
709 {
710 	char *c, *n;
711 
712 	GUARD_READ_ONLY();
713 
714 	minibuffer_taint_hist();
715 
716 	c = utf8_nth(buffer->current_line->line, buffer->cpoff);
717 	if (*c == '\0')
718 		return;
719 	n = utf8_next_cp(c);
720 
721 	memmove(c, n, strlen(n)+1);
722 
723 	recompute_completions(0);
724 }
725 
726 void
727 cmd_mini_delete_backward_char(struct buffer *buffer)
728 {
729 	char *c, *p, *start;
730 
731 	GUARD_READ_ONLY();
732 
733 	minibuffer_taint_hist();
734 
735 	c = utf8_nth(buffer->current_line->line, buffer->cpoff);
736 	start = buffer->current_line->line;
737 	if (c == start)
738 		return;
739 	p = utf8_prev_cp(c-1, start);
740 
741 	memmove(p, c, strlen(c)+1);
742 	buffer->cpoff--;
743 
744 	recompute_completions(0);
745 }
746 
747 void
748 cmd_mini_kill_line(struct buffer *buffer)
749 {
750 	char *c;
751 
752 	GUARD_READ_ONLY();
753 
754 	minibuffer_taint_hist();
755 	c = utf8_nth(buffer->current_line->line, buffer->cpoff);
756 	*c = '\0';
757 
758 	recompute_completions(0);
759 }
760 
761 void
762 cmd_mini_abort(struct buffer *buffer)
763 {
764 	if (!in_minibuffer)
765 		return;
766 
767 	ministate.abortfn();
768 }
769 
770 void
771 cmd_mini_complete_and_exit(struct buffer *buffer)
772 {
773 	if (!in_minibuffer)
774 		return;
775 
776 	minibuffer_taint_hist();
777 	ministate.donefn();
778 }
779 
780 void
781 cmd_mini_previous_history_element(struct buffer *buffer)
782 {
783 	if (ministate.history == NULL) {
784 		message("No history");
785 		return;
786 	}
787 
788 	if (ministate.hist_cur == NULL ||
789 	    (ministate.hist_cur = TAILQ_PREV(ministate.hist_cur, mhisthead, entries)) == NULL) {
790 		ministate.hist_cur = TAILQ_LAST(&ministate.history->head, mhisthead);
791 		ministate.hist_off = ministate.history->len - 1;
792 		if (ministate.hist_cur == NULL)
793 			message("No prev history item");
794 	} else {
795 		ministate.hist_off--;
796 	}
797 
798 	if (ministate.hist_cur != NULL)
799 		buffer->current_line->line = ministate.hist_cur->h;
800 }
801 
802 void
803 cmd_mini_next_history_element(struct buffer *buffer)
804 {
805 	if (ministate.history == NULL) {
806 		message("No history");
807 		return;
808 	}
809 
810 	if (ministate.hist_cur == NULL ||
811 	    (ministate.hist_cur = TAILQ_NEXT(ministate.hist_cur, entries)) == NULL) {
812 		ministate.hist_cur = TAILQ_FIRST(&ministate.history->head);
813 		ministate.hist_off = 0;
814 		if (ministate.hist_cur == NULL)
815 			message("No next history item");
816 	} else {
817 		ministate.hist_off++;
818 	}
819 
820 	if (ministate.hist_cur != NULL)
821 		buffer->current_line->line = ministate.hist_cur->h;
822 }
823 
824 void
825 cmd_previous_completion(struct buffer *buffer)
826 {
827 	if (in_minibuffer != MB_COMPREAD)
828 		return;
829 
830 	buffer = &ministate.compl.buffer;
831 
832 	if (buffer->current_line != NULL)
833 		buffer->current_line->parent->type = LINE_COMPL;
834 
835 	forward_line(buffer, -1);
836 
837 	if (buffer->current_line != NULL)
838 		buffer->current_line->parent->type = LINE_COMPL_CURRENT;
839 }
840 
841 void
842 cmd_next_completion(struct buffer *buffer)
843 {
844 	if (in_minibuffer != MB_COMPREAD)
845 		return;
846 
847 	buffer = &ministate.compl.buffer;
848 
849 	if (buffer->current_line != NULL)
850 		buffer->current_line->parent->type = LINE_COMPL;
851 
852 	forward_line(buffer, +1);
853 
854 	if (buffer->current_line != NULL)
855 		buffer->current_line->parent->type = LINE_COMPL_CURRENT;
856 }
857 
858 void
859 cmd_insert_current_candidate(struct buffer *buffer)
860 {
861 	if (in_minibuffer != MB_COMPREAD)
862 		return;
863 
864 	minibuffer_insert_current_candidate();
865 }
866 
867 void
868 cmd_suspend_telescope(struct buffer *buffer)
869 {
870 	message("Zzz...");
871 	ui_suspend();
872 }
873 
874 void
875 cmd_toggle_pre_wrap(struct buffer *buffer)
876 {
877 	dont_wrap_pre = !dont_wrap_pre;
878 
879 	if (dont_wrap_pre)
880 		message("Don't wrap preformatted blocks");
881 	else
882 		message("Wrap preformatted blocks");
883 
884 	ui_schedule_redraw();
885 }
886 
887 void
888 cmd_mini_goto_beginning(struct buffer *buffer)
889 {
890 	struct vline *vl;
891 
892 	if (!in_minibuffer)
893 		return;
894 
895 	buffer = &ministate.compl.buffer;
896 
897 	if ((vl = buffer->current_line) != NULL)
898 		vl->parent->type = LINE_COMPL;
899 
900 	vl = TAILQ_FIRST(&buffer->head);
901 	while (vl != NULL && vl->parent->flags & L_HIDDEN)
902 		vl = TAILQ_NEXT(vl, vlines);
903 
904 	if (vl == NULL)
905 		return;
906 
907 	vl->parent->type = LINE_COMPL_CURRENT;
908 	buffer->top_line = vl;
909 	buffer->current_line = vl;
910 }
911 
912 void
913 cmd_mini_goto_end(struct buffer *buffer)
914 {
915 	struct vline *vl;
916 
917 	if (!in_minibuffer)
918 		return;
919 
920 	buffer = &ministate.compl.buffer;
921 
922 	if ((vl = buffer->current_line) != NULL)
923 		vl->parent->type = LINE_COMPL;
924 
925 	vl = TAILQ_LAST(&buffer->head, vhead);
926 	while (vl != NULL && vl->parent->flags & L_HIDDEN)
927 		vl = TAILQ_PREV(vl, vhead, vlines);
928 
929 	if (vl == NULL)
930 		return;
931 
932 	vl->parent->type = LINE_COMPL_CURRENT;
933 	buffer->current_line = vl;
934 }
935 
936 void
937 cmd_other_window(struct buffer *buffer)
938 {
939 	ui_other_window();
940 }
941 
942 void
943 cmd_mini_scroll_up(struct buffer *buffer)
944 {
945 	if (!in_minibuffer)
946 		return;
947 
948 	buffer = &ministate.compl.buffer;
949 	if (buffer->current_line == NULL)
950 		return;
951 
952 	buffer->current_line->parent->type = LINE_COMPL;
953 	cmd_scroll_up(buffer);
954 	buffer->current_line->parent->type = LINE_COMPL_CURRENT;
955 }
956 
957 void
958 cmd_mini_scroll_down(struct buffer *buffer)
959 {
960 	if (!in_minibuffer)
961 		return;
962 
963 	buffer = &ministate.compl.buffer;
964 	if (buffer->current_line == NULL)
965 		return;
966 
967 	buffer->current_line->parent->type = LINE_COMPL;
968 	cmd_scroll_down(buffer);
969 	buffer->current_line->parent->type = LINE_COMPL_CURRENT;
970 }
971 
972 void
973 cmd_toggle_downloads(struct buffer *buffer)
974 {
975 	ui_toggle_side_window(SIDE_WINDOW_BOTTOM);
976 }
977 
978 void
979 cmd_cache_info(struct buffer *buffer)
980 {
981 	size_t	npages, tot;
982 	char	fmt[FMT_SCALED_STRSIZE];
983 
984 	mcache_info(&npages, &tot);
985 
986 	if (fmt_scaled(tot, fmt) == 0)
987 		message("pages: %zu, total: %s", npages, fmt);
988 	else
989 		message("pages: %zu, total: %zu", npages, tot);
990 }
991 
992 void
993 cmd_reply_last_input(struct buffer *buffer)
994 {
995 	GUARD_RECURSIVE_MINIBUFFER();
996 
997 	if (current_tab->last_input_url == NULL) {
998 		message("there was no previous input request in this tab");
999 		return;
1000 	}
1001 
1002 	if (has_prefix(current_tab->last_input_url, "gopher")) {
1003 		load_url_in_tab(current_tab, current_tab->last_input_url,
1004 		    NULL, LU_MODE_NOCACHE);
1005 		return;
1006 	}
1007 
1008 	message("%s", current_tab->last_input_url);
1009 	ui_require_input(current_tab, 0, ir_select_reply);
1010 }