xref: /openbsd-src/usr.bin/tmux/window-copy.c (revision 68dd5bb1859285b71cb62a10bf107b8ad54064d9)
1 /* $OpenBSD: window-copy.c,v 1.345 2023/11/02 10:38:14 nicm Exp $ */
2 
3 /*
4  * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
5  *
6  * Permission to use, copy, modify, and distribute this software for any
7  * purpose with or without fee is hereby granted, provided that the above
8  * copyright notice and this permission notice appear in all copies.
9  *
10  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14  * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
15  * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
16  * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17  */
18 
19 #include <sys/types.h>
20 
21 #include <ctype.h>
22 #include <regex.h>
23 #include <stdlib.h>
24 #include <string.h>
25 #include <time.h>
26 
27 #include "tmux.h"
28 
29 struct window_copy_mode_data;
30 
31 static const char *window_copy_key_table(struct window_mode_entry *);
32 static void	window_copy_command(struct window_mode_entry *, struct client *,
33 		    struct session *, struct winlink *, struct args *,
34 		    struct mouse_event *);
35 static struct screen *window_copy_init(struct window_mode_entry *,
36 		    struct cmd_find_state *, struct args *);
37 static struct screen *window_copy_view_init(struct window_mode_entry *,
38 		    struct cmd_find_state *, struct args *);
39 static void	window_copy_free(struct window_mode_entry *);
40 static void	window_copy_resize(struct window_mode_entry *, u_int, u_int);
41 static void	window_copy_formats(struct window_mode_entry *,
42 		    struct format_tree *);
43 static void	window_copy_pageup1(struct window_mode_entry *, int);
44 static int	window_copy_pagedown(struct window_mode_entry *, int, int);
45 static void	window_copy_next_paragraph(struct window_mode_entry *);
46 static void	window_copy_previous_paragraph(struct window_mode_entry *);
47 static void	window_copy_redraw_selection(struct window_mode_entry *, u_int);
48 static void	window_copy_redraw_lines(struct window_mode_entry *, u_int,
49 		    u_int);
50 static void	window_copy_redraw_screen(struct window_mode_entry *);
51 static void	window_copy_write_line(struct window_mode_entry *,
52 		    struct screen_write_ctx *, u_int);
53 static void	window_copy_write_lines(struct window_mode_entry *,
54 		    struct screen_write_ctx *, u_int, u_int);
55 static char    *window_copy_match_at_cursor(struct window_copy_mode_data *);
56 static void	window_copy_scroll_to(struct window_mode_entry *, u_int, u_int,
57 		    int);
58 static int	window_copy_search_compare(struct grid *, u_int, u_int,
59 		    struct grid *, u_int, int);
60 static int	window_copy_search_lr(struct grid *, struct grid *, u_int *,
61 		    u_int, u_int, u_int, int);
62 static int	window_copy_search_rl(struct grid *, struct grid *, u_int *,
63 		    u_int, u_int, u_int, int);
64 static int	window_copy_last_regex(struct grid *, u_int, u_int, u_int,
65 		    u_int, u_int *, u_int *, const char *, const regex_t *,
66 		    int);
67 static int	window_copy_search_mark_at(struct window_copy_mode_data *,
68 		    u_int, u_int, u_int *);
69 static char    *window_copy_stringify(struct grid *, u_int, u_int, u_int,
70 		    char *, u_int *);
71 static void	window_copy_cstrtocellpos(struct grid *, u_int, u_int *,
72 		    u_int *, const char *);
73 static int	window_copy_search_marks(struct window_mode_entry *,
74 		    struct screen *, int, int);
75 static void	window_copy_clear_marks(struct window_mode_entry *);
76 static int	window_copy_is_lowercase(const char *);
77 static void	window_copy_search_back_overlap(struct grid *, regex_t *,
78 		    u_int *, u_int *, u_int *, u_int);
79 static int	window_copy_search_jump(struct window_mode_entry *,
80 		    struct grid *, struct grid *, u_int, u_int, u_int, int, int,
81 		    int, int);
82 static int	window_copy_search(struct window_mode_entry *, int, int);
83 static int	window_copy_search_up(struct window_mode_entry *, int);
84 static int	window_copy_search_down(struct window_mode_entry *, int);
85 static void	window_copy_goto_line(struct window_mode_entry *, const char *);
86 static void	window_copy_update_cursor(struct window_mode_entry *, u_int,
87 		    u_int);
88 static void	window_copy_start_selection(struct window_mode_entry *);
89 static int	window_copy_adjust_selection(struct window_mode_entry *,
90 		    u_int *, u_int *);
91 static int	window_copy_set_selection(struct window_mode_entry *, int, int);
92 static int	window_copy_update_selection(struct window_mode_entry *, int,
93 		    int);
94 static void	window_copy_synchronize_cursor(struct window_mode_entry *, int);
95 static void    *window_copy_get_selection(struct window_mode_entry *, size_t *);
96 static void	window_copy_copy_buffer(struct window_mode_entry *,
97 		    const char *, void *, size_t);
98 static void	window_copy_pipe(struct window_mode_entry *,
99 		    struct session *, const char *);
100 static void	window_copy_copy_pipe(struct window_mode_entry *,
101 		    struct session *, const char *, const char *);
102 static void	window_copy_copy_selection(struct window_mode_entry *,
103 		    const char *);
104 static void	window_copy_append_selection(struct window_mode_entry *);
105 static void	window_copy_clear_selection(struct window_mode_entry *);
106 static void	window_copy_copy_line(struct window_mode_entry *, char **,
107 		    size_t *, u_int, u_int, u_int);
108 static int	window_copy_in_set(struct window_mode_entry *, u_int, u_int,
109 		    const char *);
110 static u_int	window_copy_find_length(struct window_mode_entry *, u_int);
111 static void	window_copy_cursor_start_of_line(struct window_mode_entry *);
112 static void	window_copy_cursor_back_to_indentation(
113 		    struct window_mode_entry *);
114 static void	window_copy_cursor_end_of_line(struct window_mode_entry *);
115 static void	window_copy_other_end(struct window_mode_entry *);
116 static void	window_copy_cursor_left(struct window_mode_entry *);
117 static void	window_copy_cursor_right(struct window_mode_entry *, int);
118 static void	window_copy_cursor_up(struct window_mode_entry *, int);
119 static void	window_copy_cursor_down(struct window_mode_entry *, int);
120 static void	window_copy_cursor_jump(struct window_mode_entry *);
121 static void	window_copy_cursor_jump_back(struct window_mode_entry *);
122 static void	window_copy_cursor_jump_to(struct window_mode_entry *);
123 static void	window_copy_cursor_jump_to_back(struct window_mode_entry *);
124 static void	window_copy_cursor_next_word(struct window_mode_entry *,
125 		    const char *);
126 static void	window_copy_cursor_next_word_end_pos(struct window_mode_entry *,
127 		    const char *, u_int *, u_int *);
128 static void	window_copy_cursor_next_word_end(struct window_mode_entry *,
129 		    const char *, int);
130 static void	window_copy_cursor_previous_word_pos(struct window_mode_entry *,
131 		    const char *, u_int *, u_int *);
132 static void	window_copy_cursor_previous_word(struct window_mode_entry *,
133 		    const char *, int);
134 static void	window_copy_cursor_prompt(struct window_mode_entry *, int,
135 		    const char *);
136 static void	window_copy_scroll_up(struct window_mode_entry *, u_int);
137 static void	window_copy_scroll_down(struct window_mode_entry *, u_int);
138 static void	window_copy_rectangle_set(struct window_mode_entry *, int);
139 static void	window_copy_move_mouse(struct mouse_event *);
140 static void	window_copy_drag_update(struct client *, struct mouse_event *);
141 static void	window_copy_drag_release(struct client *, struct mouse_event *);
142 static void	window_copy_jump_to_mark(struct window_mode_entry *);
143 static void	window_copy_acquire_cursor_up(struct window_mode_entry *,
144 		    u_int, u_int, u_int, u_int, u_int);
145 static void	window_copy_acquire_cursor_down(struct window_mode_entry *,
146 		    u_int, u_int, u_int, u_int, u_int, u_int, int);
147 
148 const struct window_mode window_copy_mode = {
149 	.name = "copy-mode",
150 
151 	.init = window_copy_init,
152 	.free = window_copy_free,
153 	.resize = window_copy_resize,
154 	.key_table = window_copy_key_table,
155 	.command = window_copy_command,
156 	.formats = window_copy_formats,
157 };
158 
159 const struct window_mode window_view_mode = {
160 	.name = "view-mode",
161 
162 	.init = window_copy_view_init,
163 	.free = window_copy_free,
164 	.resize = window_copy_resize,
165 	.key_table = window_copy_key_table,
166 	.command = window_copy_command,
167 	.formats = window_copy_formats,
168 };
169 
170 enum {
171 	WINDOW_COPY_OFF,
172 	WINDOW_COPY_SEARCHUP,
173 	WINDOW_COPY_SEARCHDOWN,
174 	WINDOW_COPY_JUMPFORWARD,
175 	WINDOW_COPY_JUMPBACKWARD,
176 	WINDOW_COPY_JUMPTOFORWARD,
177 	WINDOW_COPY_JUMPTOBACKWARD,
178 };
179 
180 enum {
181 	WINDOW_COPY_REL_POS_ABOVE,
182 	WINDOW_COPY_REL_POS_ON_SCREEN,
183 	WINDOW_COPY_REL_POS_BELOW,
184 };
185 
186 enum window_copy_cmd_action {
187 	WINDOW_COPY_CMD_NOTHING,
188 	WINDOW_COPY_CMD_REDRAW,
189 	WINDOW_COPY_CMD_CANCEL,
190 };
191 
192 enum window_copy_cmd_clear {
193 	WINDOW_COPY_CMD_CLEAR_ALWAYS,
194 	WINDOW_COPY_CMD_CLEAR_NEVER,
195 	WINDOW_COPY_CMD_CLEAR_EMACS_ONLY,
196 };
197 
198 struct window_copy_cmd_state {
199 	struct window_mode_entry	*wme;
200 	struct args			*args;
201 	struct mouse_event		*m;
202 
203 	struct client			*c;
204 	struct session			*s;
205 	struct winlink			*wl;
206 };
207 
208 /*
209  * Copy mode's visible screen (the "screen" field) is filled from one of two
210  * sources: the original contents of the pane (used when we actually enter via
211  * the "copy-mode" command, to copy the contents of the current pane), or else
212  * a series of lines containing the output from an output-writing tmux command
213  * (such as any of the "show-*" or "list-*" commands).
214  *
215  * In either case, the full content of the copy-mode grid is pointed at by the
216  * "backing" field, and is copied into "screen" as needed (that is, when
217  * scrolling occurs). When copy-mode is backed by a pane, backing points
218  * directly at that pane's screen structure (&wp->base); when backed by a list
219  * of output-lines from a command, it points at a newly-allocated screen
220  * structure (which is deallocated when the mode ends).
221  */
222 struct window_copy_mode_data {
223 	struct screen	 screen;
224 
225 	struct screen	*backing;
226 	int		 backing_written; /* backing display started */
227 	struct screen	*writing;
228 	struct input_ctx *ictx;
229 
230 	int		 viewmode;	/* view mode entered */
231 
232 	u_int		 oy;		/* number of lines scrolled up */
233 
234 	u_int		 selx;		/* beginning of selection */
235 	u_int		 sely;
236 
237 	u_int		 endselx;	/* end of selection */
238 	u_int		 endsely;
239 
240 	enum {
241 		CURSORDRAG_NONE,	/* selection is independent of cursor */
242 		CURSORDRAG_ENDSEL,	/* end is synchronized with cursor */
243 		CURSORDRAG_SEL,		/* start is synchronized with cursor */
244 	} cursordrag;
245 
246 	int		 modekeys;
247 	enum {
248 		LINE_SEL_NONE,
249 		LINE_SEL_LEFT_RIGHT,
250 		LINE_SEL_RIGHT_LEFT,
251 	} lineflag;			/* line selection mode */
252 	int		 rectflag;	/* in rectangle copy mode? */
253 	int		 scroll_exit;	/* exit on scroll to end? */
254 	int		 hide_position;	/* hide position marker */
255 
256 	enum {
257 		SEL_CHAR,		/* select one char at a time */
258 		SEL_WORD,		/* select one word at a time */
259 		SEL_LINE,		/* select one line at a time */
260 	} selflag;
261 
262 	const char	*separators;	/* word separators */
263 
264 	u_int		 dx;		/* drag start position */
265 	u_int		 dy;
266 
267 	u_int		 selrx;		/* selection reset positions */
268 	u_int		 selry;
269 	u_int		 endselrx;
270 	u_int		 endselry;
271 
272 	u_int		 cx;
273 	u_int		 cy;
274 
275 	u_int		 lastcx; 	/* position in last line w/ content */
276 	u_int		 lastsx;	/* size of last line w/ content */
277 
278 	u_int		 mx;		/* mark position */
279 	u_int		 my;
280 	int		 showmark;
281 
282 	int		 searchtype;
283 	int		 searchdirection;
284 	int		 searchregex;
285 	char		*searchstr;
286 	u_char		*searchmark;
287 	int		 searchcount;
288 	int		 searchmore;
289 	int		 searchall;
290 	int		 searchx;
291 	int		 searchy;
292 	int		 searcho;
293 	u_char		 searchgen;
294 
295 	int		 timeout;	/* search has timed out */
296 #define WINDOW_COPY_SEARCH_TIMEOUT 10000
297 #define WINDOW_COPY_SEARCH_ALL_TIMEOUT 200
298 #define WINDOW_COPY_SEARCH_MAX_LINE 2000
299 
300 	int			 jumptype;
301 	struct utf8_data	*jumpchar;
302 
303 	struct event	 dragtimer;
304 #define WINDOW_COPY_DRAG_REPEAT_TIME 50000
305 };
306 
307 static void
308 window_copy_scroll_timer(__unused int fd, __unused short events, void *arg)
309 {
310 	struct window_mode_entry	*wme = arg;
311 	struct window_pane		*wp = wme->wp;
312 	struct window_copy_mode_data	*data = wme->data;
313 	struct timeval			 tv = {
314 		.tv_usec = WINDOW_COPY_DRAG_REPEAT_TIME
315 	};
316 
317 	evtimer_del(&data->dragtimer);
318 
319 	if (TAILQ_FIRST(&wp->modes) != wme)
320 		return;
321 
322 	if (data->cy == 0) {
323 		evtimer_add(&data->dragtimer, &tv);
324 		window_copy_cursor_up(wme, 1);
325 	} else if (data->cy == screen_size_y(&data->screen) - 1) {
326 		evtimer_add(&data->dragtimer, &tv);
327 		window_copy_cursor_down(wme, 1);
328 	}
329 }
330 
331 static struct screen *
332 window_copy_clone_screen(struct screen *src, struct screen *hint, u_int *cx,
333     u_int *cy, int trim)
334 {
335 	struct screen		*dst;
336 	const struct grid_line	*gl;
337 	u_int			 sy, wx, wy;
338 	int			 reflow;
339 
340 	dst = xcalloc(1, sizeof *dst);
341 
342 	sy = screen_hsize(src) + screen_size_y(src);
343 	if (trim) {
344 		while (sy > screen_hsize(src)) {
345 			gl = grid_peek_line(src->grid, sy - 1);
346 			if (gl->cellused != 0)
347 				break;
348 			sy--;
349 		}
350 	}
351 	log_debug("%s: target screen is %ux%u, source %ux%u", __func__,
352 	    screen_size_x(src), sy, screen_size_x(hint),
353 	    screen_hsize(src) + screen_size_y(src));
354 	screen_init(dst, screen_size_x(src), sy, screen_hlimit(src));
355 
356 	/*
357 	 * Ensure history is on for the backing grid so lines are not deleted
358 	 * during resizing.
359 	 */
360 	dst->grid->flags |= GRID_HISTORY;
361 	grid_duplicate_lines(dst->grid, 0, src->grid, 0, sy);
362 
363 	dst->grid->sy = sy - screen_hsize(src);
364 	dst->grid->hsize = screen_hsize(src);
365 	dst->grid->hscrolled = src->grid->hscrolled;
366 	if (src->cy > dst->grid->sy - 1) {
367 		dst->cx = 0;
368 		dst->cy = dst->grid->sy - 1;
369 	} else {
370 		dst->cx = src->cx;
371 		dst->cy = src->cy;
372 	}
373 
374 	if (cx != NULL && cy != NULL) {
375 		*cx = dst->cx;
376 		*cy = screen_hsize(dst) + dst->cy;
377 		reflow = (screen_size_x(hint) != screen_size_x(dst));
378 	}
379 	else
380 		reflow = 0;
381 	if (reflow)
382 		grid_wrap_position(dst->grid, *cx, *cy, &wx, &wy);
383 	screen_resize_cursor(dst, screen_size_x(hint), screen_size_y(hint), 1,
384 	    0, 0);
385 	if (reflow)
386 		grid_unwrap_position(dst->grid, cx, cy, wx, wy);
387 
388 	return (dst);
389 }
390 
391 static struct window_copy_mode_data *
392 window_copy_common_init(struct window_mode_entry *wme)
393 {
394 	struct window_pane		*wp = wme->wp;
395 	struct window_copy_mode_data	*data;
396 	struct screen			*base = &wp->base;
397 
398 	wme->data = data = xcalloc(1, sizeof *data);
399 
400 	data->cursordrag = CURSORDRAG_NONE;
401 	data->lineflag = LINE_SEL_NONE;
402 	data->selflag = SEL_CHAR;
403 
404 	if (wp->searchstr != NULL) {
405 		data->searchtype = WINDOW_COPY_SEARCHUP;
406 		data->searchregex = wp->searchregex;
407 		data->searchstr = xstrdup(wp->searchstr);
408 	} else {
409 		data->searchtype = WINDOW_COPY_OFF;
410 		data->searchregex = 0;
411 		data->searchstr = NULL;
412 	}
413 	data->searchx = data->searchy = data->searcho = -1;
414 	data->searchall = 1;
415 
416 	data->jumptype = WINDOW_COPY_OFF;
417 	data->jumpchar = NULL;
418 
419 	screen_init(&data->screen, screen_size_x(base), screen_size_y(base), 0);
420 	data->modekeys = options_get_number(wp->window->options, "mode-keys");
421 
422 	evtimer_set(&data->dragtimer, window_copy_scroll_timer, wme);
423 
424 	return (data);
425 }
426 
427 static struct screen *
428 window_copy_init(struct window_mode_entry *wme,
429     __unused struct cmd_find_state *fs, struct args *args)
430 {
431 	struct window_pane		*wp = wme->swp;
432 	struct window_copy_mode_data	*data;
433 	struct screen			*base = &wp->base;
434 	struct screen_write_ctx		 ctx;
435 	u_int				 i, cx, cy;
436 
437 	data = window_copy_common_init(wme);
438 	data->backing = window_copy_clone_screen(base, &data->screen, &cx, &cy,
439 	    wme->swp != wme->wp);
440 
441 	data->cx = cx;
442 	if (cy < screen_hsize(data->backing)) {
443 		data->cy = 0;
444 		data->oy = screen_hsize(data->backing) - cy;
445 	} else {
446 		data->cy = cy - screen_hsize(data->backing);
447 		data->oy = 0;
448 	}
449 
450 	data->scroll_exit = args_has(args, 'e');
451 	data->hide_position = args_has(args, 'H');
452 
453 	data->screen.cx = data->cx;
454 	data->screen.cy = data->cy;
455 	data->mx = data->cx;
456 	data->my = screen_hsize(data->backing) + data->cy - data->oy;
457 	data->showmark = 0;
458 
459 	screen_write_start(&ctx, &data->screen);
460 	for (i = 0; i < screen_size_y(&data->screen); i++)
461 		window_copy_write_line(wme, &ctx, i);
462 	screen_write_cursormove(&ctx, data->cx, data->cy, 0);
463 	screen_write_stop(&ctx);
464 
465 	return (&data->screen);
466 }
467 
468 static struct screen *
469 window_copy_view_init(struct window_mode_entry *wme,
470     __unused struct cmd_find_state *fs, __unused struct args *args)
471 {
472 	struct window_pane		*wp = wme->wp;
473 	struct window_copy_mode_data	*data;
474 	struct screen			*base = &wp->base;
475 	u_int				 sx = screen_size_x(base);
476 
477 	data = window_copy_common_init(wme);
478 	data->viewmode = 1;
479 
480 	data->backing = xmalloc(sizeof *data->backing);
481 	screen_init(data->backing, sx, screen_size_y(base), UINT_MAX);
482 	data->writing = xmalloc(sizeof *data->writing);
483 	screen_init(data->writing, sx, screen_size_y(base), 0);
484 	data->ictx = input_init(NULL, NULL, NULL);
485 	data->mx = data->cx;
486 	data->my = screen_hsize(data->backing) + data->cy - data->oy;
487 	data->showmark = 0;
488 
489 	return (&data->screen);
490 }
491 
492 static void
493 window_copy_free(struct window_mode_entry *wme)
494 {
495 	struct window_copy_mode_data	*data = wme->data;
496 
497 	evtimer_del(&data->dragtimer);
498 
499 	free(data->searchmark);
500 	free(data->searchstr);
501 	free(data->jumpchar);
502 
503 	if (data->writing != NULL) {
504 		screen_free(data->writing);
505 		free(data->writing);
506 	}
507 	if (data->ictx != NULL)
508 		input_free(data->ictx);
509 	screen_free(data->backing);
510 	free(data->backing);
511 
512 	screen_free(&data->screen);
513 	free(data);
514 }
515 
516 void
517 window_copy_add(struct window_pane *wp, int parse, const char *fmt, ...)
518 {
519 	va_list	ap;
520 
521 	va_start(ap, fmt);
522 	window_copy_vadd(wp, parse, fmt, ap);
523 	va_end(ap);
524 }
525 
526 static void
527 window_copy_init_ctx_cb(__unused struct screen_write_ctx *ctx,
528     struct tty_ctx *ttyctx)
529 {
530 	memcpy(&ttyctx->defaults, &grid_default_cell, sizeof ttyctx->defaults);
531 	ttyctx->palette = NULL;
532 	ttyctx->redraw_cb = NULL;
533 	ttyctx->set_client_cb = NULL;
534 	ttyctx->arg = NULL;
535 }
536 
537 void
538 window_copy_vadd(struct window_pane *wp, int parse, const char *fmt, va_list ap)
539 {
540 	struct window_mode_entry	*wme = TAILQ_FIRST(&wp->modes);
541 	struct window_copy_mode_data	*data = wme->data;
542 	struct screen			*backing = data->backing;
543 	struct screen			*writing = data->writing;
544 	struct screen_write_ctx	 	 writing_ctx, backing_ctx, ctx;
545 	struct grid_cell		 gc;
546 	u_int				 old_hsize, old_cy;
547 	u_int				 sx = screen_size_x(backing);
548 	char				*text;
549 
550 	if (parse) {
551 		vasprintf(&text, fmt, ap);
552 		screen_write_start(&writing_ctx, writing);
553 		screen_write_reset(&writing_ctx);
554 		input_parse_screen(data->ictx, writing, window_copy_init_ctx_cb,
555 		    data, text, strlen(text));
556 		free(text);
557 	}
558 
559 	old_hsize = screen_hsize(data->backing);
560 	screen_write_start(&backing_ctx, backing);
561 	if (data->backing_written) {
562 		/*
563 		 * On the second or later line, do a CRLF before writing
564 		 * (so it's on a new line).
565 		 */
566 		screen_write_carriagereturn(&backing_ctx);
567 		screen_write_linefeed(&backing_ctx, 0, 8);
568 	} else
569 		data->backing_written = 1;
570 	old_cy = backing->cy;
571 	if (parse)
572 		screen_write_fast_copy(&backing_ctx, writing, 0, 0, sx, 1);
573 	else {
574 		memcpy(&gc, &grid_default_cell, sizeof gc);
575 		screen_write_vnputs(&backing_ctx, 0, &gc, fmt, ap);
576 	}
577 	screen_write_stop(&backing_ctx);
578 
579 	data->oy += screen_hsize(data->backing) - old_hsize;
580 
581 	screen_write_start_pane(&ctx, wp, &data->screen);
582 
583 	/*
584 	 * If the history has changed, draw the top line.
585 	 * (If there's any history at all, it has changed.)
586 	 */
587 	if (screen_hsize(data->backing))
588 		window_copy_redraw_lines(wme, 0, 1);
589 
590 	/* Write the new lines. */
591 	window_copy_redraw_lines(wme, old_cy, backing->cy - old_cy + 1);
592 
593 	screen_write_stop(&ctx);
594 }
595 
596 void
597 window_copy_pageup(struct window_pane *wp, int half_page)
598 {
599 	window_copy_pageup1(TAILQ_FIRST(&wp->modes), half_page);
600 }
601 
602 static void
603 window_copy_pageup1(struct window_mode_entry *wme, int half_page)
604 {
605 	struct window_copy_mode_data	*data = wme->data;
606 	struct screen			*s = &data->screen;
607 	u_int				 n, ox, oy, px, py;
608 
609 	oy = screen_hsize(data->backing) + data->cy - data->oy;
610 	ox = window_copy_find_length(wme, oy);
611 
612 	if (data->cx != ox) {
613 		data->lastcx = data->cx;
614 		data->lastsx = ox;
615 	}
616 	data->cx = data->lastcx;
617 
618 	n = 1;
619 	if (screen_size_y(s) > 2) {
620 		if (half_page)
621 			n = screen_size_y(s) / 2;
622 		else
623 			n = screen_size_y(s) - 2;
624 	}
625 
626 	if (data->oy + n > screen_hsize(data->backing)) {
627 		data->oy = screen_hsize(data->backing);
628 		if (data->cy < n)
629 			data->cy = 0;
630 		else
631 			data->cy -= n;
632 	} else
633 		data->oy += n;
634 
635 	if (data->screen.sel == NULL || !data->rectflag) {
636 		py = screen_hsize(data->backing) + data->cy - data->oy;
637 		px = window_copy_find_length(wme, py);
638 		if ((data->cx >= data->lastsx && data->cx != px) ||
639 		    data->cx > px)
640 			window_copy_cursor_end_of_line(wme);
641 	}
642 
643 	if (data->searchmark != NULL && !data->timeout)
644 		window_copy_search_marks(wme, NULL, data->searchregex, 1);
645 	window_copy_update_selection(wme, 1, 0);
646 	window_copy_redraw_screen(wme);
647 }
648 
649 static int
650 window_copy_pagedown(struct window_mode_entry *wme, int half_page,
651     int scroll_exit)
652 {
653 	struct window_copy_mode_data	*data = wme->data;
654 	struct screen			*s = &data->screen;
655 	u_int				 n, ox, oy, px, py;
656 
657 	oy = screen_hsize(data->backing) + data->cy - data->oy;
658 	ox = window_copy_find_length(wme, oy);
659 
660 	if (data->cx != ox) {
661 		data->lastcx = data->cx;
662 		data->lastsx = ox;
663 	}
664 	data->cx = data->lastcx;
665 
666 	n = 1;
667 	if (screen_size_y(s) > 2) {
668 		if (half_page)
669 			n = screen_size_y(s) / 2;
670 		else
671 			n = screen_size_y(s) - 2;
672 	}
673 
674 	if (data->oy < n) {
675 		data->oy = 0;
676 		if (data->cy + (n - data->oy) >= screen_size_y(data->backing))
677 			data->cy = screen_size_y(data->backing) - 1;
678 		else
679 			data->cy += n - data->oy;
680 	} else
681 		data->oy -= n;
682 
683 	if (data->screen.sel == NULL || !data->rectflag) {
684 		py = screen_hsize(data->backing) + data->cy - data->oy;
685 		px = window_copy_find_length(wme, py);
686 		if ((data->cx >= data->lastsx && data->cx != px) ||
687 		    data->cx > px)
688 			window_copy_cursor_end_of_line(wme);
689 	}
690 
691 	if (scroll_exit && data->oy == 0)
692 		return (1);
693 	if (data->searchmark != NULL && !data->timeout)
694 		window_copy_search_marks(wme, NULL, data->searchregex, 1);
695 	window_copy_update_selection(wme, 1, 0);
696 	window_copy_redraw_screen(wme);
697 	return (0);
698 }
699 
700 static void
701 window_copy_previous_paragraph(struct window_mode_entry *wme)
702 {
703 	struct window_copy_mode_data	*data = wme->data;
704 	u_int				 oy;
705 
706 	oy = screen_hsize(data->backing) + data->cy - data->oy;
707 
708 	while (oy > 0 && window_copy_find_length(wme, oy) == 0)
709 		oy--;
710 
711 	while (oy > 0 && window_copy_find_length(wme, oy) > 0)
712 		oy--;
713 
714 	window_copy_scroll_to(wme, 0, oy, 0);
715 }
716 
717 static void
718 window_copy_next_paragraph(struct window_mode_entry *wme)
719 {
720 	struct window_copy_mode_data	*data = wme->data;
721 	struct screen			*s = &data->screen;
722 	u_int				 maxy, ox, oy;
723 
724 	oy = screen_hsize(data->backing) + data->cy - data->oy;
725 	maxy = screen_hsize(data->backing) + screen_size_y(s) - 1;
726 
727 	while (oy < maxy && window_copy_find_length(wme, oy) == 0)
728 		oy++;
729 
730 	while (oy < maxy && window_copy_find_length(wme, oy) > 0)
731 		oy++;
732 
733 	ox = window_copy_find_length(wme, oy);
734 	window_copy_scroll_to(wme, ox, oy, 0);
735 }
736 
737 char *
738 window_copy_get_word(struct window_pane *wp, u_int x, u_int y)
739 {
740 	struct window_mode_entry	*wme = TAILQ_FIRST(&wp->modes);
741 	struct window_copy_mode_data	*data = wme->data;
742 	struct grid			*gd = data->screen.grid;
743 
744 	return (format_grid_word(gd, x, gd->hsize + y));
745 }
746 
747 char *
748 window_copy_get_line(struct window_pane *wp, u_int y)
749 {
750 	struct window_mode_entry	*wme = TAILQ_FIRST(&wp->modes);
751 	struct window_copy_mode_data	*data = wme->data;
752 	struct grid			*gd = data->screen.grid;
753 
754 	return (format_grid_line(gd, gd->hsize + y));
755 }
756 
757 static void *
758 window_copy_cursor_word_cb(struct format_tree *ft)
759 {
760 	struct window_pane		*wp = format_get_pane(ft);
761 	struct window_mode_entry	*wme = TAILQ_FIRST(&wp->modes);
762 	struct window_copy_mode_data	*data = wme->data;
763 
764 	return (window_copy_get_word(wp, data->cx, data->cy));
765 }
766 
767 static void *
768 window_copy_cursor_line_cb(struct format_tree *ft)
769 {
770 	struct window_pane		*wp = format_get_pane(ft);
771 	struct window_mode_entry	*wme = TAILQ_FIRST(&wp->modes);
772 	struct window_copy_mode_data	*data = wme->data;
773 
774 	return (window_copy_get_line(wp, data->cy));
775 }
776 
777 static void *
778 window_copy_search_match_cb(struct format_tree *ft)
779 {
780 	struct window_pane		*wp = format_get_pane(ft);
781 	struct window_mode_entry	*wme = TAILQ_FIRST(&wp->modes);
782 	struct window_copy_mode_data	*data = wme->data;
783 
784 	return (window_copy_match_at_cursor(data));
785 }
786 
787 static void
788 window_copy_formats(struct window_mode_entry *wme, struct format_tree *ft)
789 {
790 	struct window_copy_mode_data	*data = wme->data;
791 
792 	format_add(ft, "scroll_position", "%d", data->oy);
793 	format_add(ft, "rectangle_toggle", "%d", data->rectflag);
794 
795 	format_add(ft, "copy_cursor_x", "%d", data->cx);
796 	format_add(ft, "copy_cursor_y", "%d", data->cy);
797 
798 	format_add(ft, "selection_present", "%d", data->screen.sel != NULL);
799 	if (data->screen.sel != NULL) {
800 		format_add(ft, "selection_start_x", "%d", data->selx);
801 		format_add(ft, "selection_start_y", "%d", data->sely);
802 		format_add(ft, "selection_end_x", "%d", data->endselx);
803 		format_add(ft, "selection_end_y", "%d", data->endsely);
804 		format_add(ft, "selection_active", "%d",
805 		    data->cursordrag != CURSORDRAG_NONE);
806 	} else
807 		format_add(ft, "selection_active", "%d", 0);
808 
809 	format_add(ft, "search_present", "%d", data->searchmark != NULL);
810 	format_add_cb(ft, "search_match", window_copy_search_match_cb);
811 
812 	format_add_cb(ft, "copy_cursor_word", window_copy_cursor_word_cb);
813 	format_add_cb(ft, "copy_cursor_line", window_copy_cursor_line_cb);
814 }
815 
816 static void
817 window_copy_size_changed(struct window_mode_entry *wme)
818 {
819 	struct window_copy_mode_data	*data = wme->data;
820 	struct screen			*s = &data->screen;
821 	struct screen_write_ctx		 ctx;
822 	int				 search = (data->searchmark != NULL);
823 
824 	window_copy_clear_selection(wme);
825 	window_copy_clear_marks(wme);
826 
827 	screen_write_start(&ctx, s);
828 	window_copy_write_lines(wme, &ctx, 0, screen_size_y(s));
829 	screen_write_stop(&ctx);
830 
831 	if (search && !data->timeout)
832 		window_copy_search_marks(wme, NULL, data->searchregex, 0);
833 	data->searchx = data->cx;
834 	data->searchy = data->cy;
835 	data->searcho = data->oy;
836 }
837 
838 static void
839 window_copy_resize(struct window_mode_entry *wme, u_int sx, u_int sy)
840 {
841 	struct window_copy_mode_data	*data = wme->data;
842 	struct screen			*s = &data->screen;
843 	struct grid			*gd = data->backing->grid;
844 	u_int				 cx, cy, wx, wy;
845 	int				 reflow;
846 
847 	screen_resize(s, sx, sy, 0);
848 	cx = data->cx;
849 	cy = gd->hsize + data->cy - data->oy;
850 	reflow = (gd->sx != sx);
851 	if (reflow)
852 		grid_wrap_position(gd, cx, cy, &wx, &wy);
853 	screen_resize_cursor(data->backing, sx, sy, 1, 0, 0);
854 	if (reflow)
855 		grid_unwrap_position(gd, &cx, &cy, wx, wy);
856 
857 	data->cx = cx;
858 	if (cy < gd->hsize) {
859 		data->cy = 0;
860 		data->oy = gd->hsize - cy;
861 	} else {
862 		data->cy = cy - gd->hsize;
863 		data->oy = 0;
864 	}
865 
866 	window_copy_size_changed(wme);
867 	window_copy_redraw_screen(wme);
868 }
869 
870 static const char *
871 window_copy_key_table(struct window_mode_entry *wme)
872 {
873 	struct window_pane	*wp = wme->wp;
874 
875 	if (options_get_number(wp->window->options, "mode-keys") == MODEKEY_VI)
876 		return ("copy-mode-vi");
877 	return ("copy-mode");
878 }
879 
880 static int
881 window_copy_expand_search_string(struct window_copy_cmd_state *cs)
882 {
883 	struct window_mode_entry	*wme = cs->wme;
884 	struct window_copy_mode_data	*data = wme->data;
885 	const char			*ss = args_string(cs->args, 1);
886 	char				*expanded;
887 
888 	if (ss == NULL || *ss == '\0')
889 		return (0);
890 
891 	if (args_has(cs->args, 'F')) {
892 		expanded = format_single(NULL, ss, NULL, NULL, NULL, wme->wp);
893 		if (*expanded == '\0') {
894 			free(expanded);
895 			return (0);
896 		}
897 		free(data->searchstr);
898 		data->searchstr = expanded;
899 	} else {
900 		free(data->searchstr);
901 		data->searchstr = xstrdup(ss);
902 	}
903 	return (1);
904 }
905 
906 static enum window_copy_cmd_action
907 window_copy_cmd_append_selection(struct window_copy_cmd_state *cs)
908 {
909 	struct window_mode_entry	*wme = cs->wme;
910 	struct session			*s = cs->s;
911 
912 	if (s != NULL)
913 		window_copy_append_selection(wme);
914 	window_copy_clear_selection(wme);
915 	return (WINDOW_COPY_CMD_REDRAW);
916 }
917 
918 static enum window_copy_cmd_action
919 window_copy_cmd_append_selection_and_cancel(struct window_copy_cmd_state *cs)
920 {
921 	struct window_mode_entry	*wme = cs->wme;
922 	struct session			*s = cs->s;
923 
924 	if (s != NULL)
925 		window_copy_append_selection(wme);
926 	window_copy_clear_selection(wme);
927 	return (WINDOW_COPY_CMD_CANCEL);
928 }
929 
930 static enum window_copy_cmd_action
931 window_copy_cmd_back_to_indentation(struct window_copy_cmd_state *cs)
932 {
933 	struct window_mode_entry	*wme = cs->wme;
934 
935 	window_copy_cursor_back_to_indentation(wme);
936 	return (WINDOW_COPY_CMD_NOTHING);
937 }
938 
939 static enum window_copy_cmd_action
940 window_copy_cmd_begin_selection(struct window_copy_cmd_state *cs)
941 {
942 	struct window_mode_entry	*wme = cs->wme;
943 	struct client			*c = cs->c;
944 	struct mouse_event		*m = cs->m;
945 	struct window_copy_mode_data	*data = wme->data;
946 
947 	if (m != NULL) {
948 		window_copy_start_drag(c, m);
949 		return (WINDOW_COPY_CMD_NOTHING);
950 	}
951 
952 	data->lineflag = LINE_SEL_NONE;
953 	data->selflag = SEL_CHAR;
954 	window_copy_start_selection(wme);
955 	return (WINDOW_COPY_CMD_REDRAW);
956 }
957 
958 static enum window_copy_cmd_action
959 window_copy_cmd_stop_selection(struct window_copy_cmd_state *cs)
960 {
961 	struct window_mode_entry	*wme = cs->wme;
962 	struct window_copy_mode_data	*data = wme->data;
963 
964 	data->cursordrag = CURSORDRAG_NONE;
965 	data->lineflag = LINE_SEL_NONE;
966 	data->selflag = SEL_CHAR;
967 	return (WINDOW_COPY_CMD_NOTHING);
968 }
969 
970 static enum window_copy_cmd_action
971 window_copy_cmd_bottom_line(struct window_copy_cmd_state *cs)
972 {
973 	struct window_mode_entry	*wme = cs->wme;
974 	struct window_copy_mode_data	*data = wme->data;
975 
976 	data->cx = 0;
977 	data->cy = screen_size_y(&data->screen) - 1;
978 
979 	window_copy_update_selection(wme, 1, 0);
980 	return (WINDOW_COPY_CMD_REDRAW);
981 }
982 
983 static enum window_copy_cmd_action
984 window_copy_cmd_cancel(__unused struct window_copy_cmd_state *cs)
985 {
986 	return (WINDOW_COPY_CMD_CANCEL);
987 }
988 
989 static enum window_copy_cmd_action
990 window_copy_cmd_clear_selection(struct window_copy_cmd_state *cs)
991 {
992 	struct window_mode_entry	*wme = cs->wme;
993 
994 	window_copy_clear_selection(wme);
995 	return (WINDOW_COPY_CMD_REDRAW);
996 }
997 
998 static enum window_copy_cmd_action
999 window_copy_do_copy_end_of_line(struct window_copy_cmd_state *cs, int pipe,
1000     int cancel)
1001 {
1002 	struct window_mode_entry	 *wme = cs->wme;
1003 	struct client			 *c = cs->c;
1004 	struct session			 *s = cs->s;
1005 	struct winlink			 *wl = cs->wl;
1006 	struct window_pane		 *wp = wme->wp;
1007 	u_int				  count = args_count(cs->args);
1008 	u_int				  np = wme->prefix, ocx, ocy, ooy;
1009 	struct window_copy_mode_data	 *data = wme->data;
1010 	char				 *prefix = NULL, *command = NULL;
1011 	const char			 *arg1 = args_string(cs->args, 1);
1012 	const char			 *arg2 = args_string(cs->args, 2);
1013 
1014 	if (pipe) {
1015 		if (count == 3)
1016 			prefix = format_single(NULL, arg2, c, s, wl, wp);
1017 		if (s != NULL && count > 1 && *arg1 != '\0')
1018 			command = format_single(NULL, arg1, c, s, wl, wp);
1019 	} else {
1020 		if (count == 2)
1021 			prefix = format_single(NULL, arg1, c, s, wl, wp);
1022 	}
1023 
1024 	ocx = data->cx;
1025 	ocy = data->cy;
1026 	ooy = data->oy;
1027 
1028 	window_copy_start_selection(wme);
1029 	for (; np > 1; np--)
1030 		window_copy_cursor_down(wme, 0);
1031 	window_copy_cursor_end_of_line(wme);
1032 
1033 	if (s != NULL) {
1034 		if (pipe)
1035 			window_copy_copy_pipe(wme, s, prefix, command);
1036 		else
1037 			window_copy_copy_selection(wme, prefix);
1038 
1039 		if (cancel) {
1040 			free(prefix);
1041 			free(command);
1042 			return (WINDOW_COPY_CMD_CANCEL);
1043 		}
1044 	}
1045 	window_copy_clear_selection(wme);
1046 
1047 	data->cx = ocx;
1048 	data->cy = ocy;
1049 	data->oy = ooy;
1050 
1051 	free(prefix);
1052 	free(command);
1053 	return (WINDOW_COPY_CMD_REDRAW);
1054 }
1055 
1056 static enum window_copy_cmd_action
1057 window_copy_cmd_copy_end_of_line(struct window_copy_cmd_state *cs)
1058 {
1059 	return (window_copy_do_copy_end_of_line(cs, 0, 0));
1060 }
1061 
1062 static enum window_copy_cmd_action
1063 window_copy_cmd_copy_end_of_line_and_cancel(struct window_copy_cmd_state *cs)
1064 {
1065 	return (window_copy_do_copy_end_of_line(cs, 0, 1));
1066 }
1067 
1068 static enum window_copy_cmd_action
1069 window_copy_cmd_copy_pipe_end_of_line(struct window_copy_cmd_state *cs)
1070 {
1071 	return (window_copy_do_copy_end_of_line(cs, 1, 0));
1072 }
1073 
1074 static enum window_copy_cmd_action
1075 window_copy_cmd_copy_pipe_end_of_line_and_cancel(
1076     struct window_copy_cmd_state *cs)
1077 {
1078 	return (window_copy_do_copy_end_of_line(cs, 1, 1));
1079 }
1080 
1081 static enum window_copy_cmd_action
1082 window_copy_do_copy_line(struct window_copy_cmd_state *cs, int pipe, int cancel)
1083 {
1084 	struct window_mode_entry	 *wme = cs->wme;
1085 	struct client			 *c = cs->c;
1086 	struct session			 *s = cs->s;
1087 	struct winlink			 *wl = cs->wl;
1088 	struct window_pane		 *wp = wme->wp;
1089 	struct window_copy_mode_data	 *data = wme->data;
1090 	u_int				  count = args_count(cs->args);
1091 	u_int				  np = wme->prefix, ocx, ocy, ooy;
1092 	char				 *prefix = NULL, *command = NULL;
1093 	const char			 *arg1 = args_string(cs->args, 1);
1094 	const char			 *arg2 = args_string(cs->args, 2);
1095 
1096 	if (pipe) {
1097 		if (count == 3)
1098 			prefix = format_single(NULL, arg2, c, s, wl, wp);
1099 		if (s != NULL && count > 1 && *arg1 != '\0')
1100 			command = format_single(NULL, arg1, c, s, wl, wp);
1101 	} else {
1102 		if (count == 2)
1103 			prefix = format_single(NULL, arg1, c, s, wl, wp);
1104 	}
1105 
1106 	ocx = data->cx;
1107 	ocy = data->cy;
1108 	ooy = data->oy;
1109 
1110 	data->selflag = SEL_CHAR;
1111 	window_copy_cursor_start_of_line(wme);
1112 	window_copy_start_selection(wme);
1113 	for (; np > 1; np--)
1114 		window_copy_cursor_down(wme, 0);
1115 	window_copy_cursor_end_of_line(wme);
1116 
1117 	if (s != NULL) {
1118 		if (pipe)
1119 			window_copy_copy_pipe(wme, s, prefix, command);
1120 		else
1121 			window_copy_copy_selection(wme, prefix);
1122 
1123 		if (cancel) {
1124 			free(prefix);
1125 			free(command);
1126 			return (WINDOW_COPY_CMD_CANCEL);
1127 		}
1128 	}
1129 	window_copy_clear_selection(wme);
1130 
1131 	data->cx = ocx;
1132 	data->cy = ocy;
1133 	data->oy = ooy;
1134 
1135 	free(prefix);
1136 	free(command);
1137 	return (WINDOW_COPY_CMD_REDRAW);
1138 }
1139 
1140 static enum window_copy_cmd_action
1141 window_copy_cmd_copy_line(struct window_copy_cmd_state *cs)
1142 {
1143 	return (window_copy_do_copy_line(cs, 0, 0));
1144 }
1145 
1146 static enum window_copy_cmd_action
1147 window_copy_cmd_copy_line_and_cancel(struct window_copy_cmd_state *cs)
1148 {
1149 	return (window_copy_do_copy_line(cs, 0, 1));
1150 }
1151 
1152 static enum window_copy_cmd_action
1153 window_copy_cmd_copy_pipe_line(struct window_copy_cmd_state *cs)
1154 {
1155 	return (window_copy_do_copy_line(cs, 1, 0));
1156 }
1157 
1158 static enum window_copy_cmd_action
1159 window_copy_cmd_copy_pipe_line_and_cancel(struct window_copy_cmd_state *cs)
1160 {
1161 	return (window_copy_do_copy_line(cs, 1, 1));
1162 }
1163 
1164 static enum window_copy_cmd_action
1165 window_copy_cmd_copy_selection_no_clear(struct window_copy_cmd_state *cs)
1166 {
1167 	struct window_mode_entry	*wme = cs->wme;
1168 	struct client			*c = cs->c;
1169 	struct session			*s = cs->s;
1170 	struct winlink			*wl = cs->wl;
1171 	struct window_pane		*wp = wme->wp;
1172 	char				*prefix = NULL;
1173 	const char			*arg1 = args_string(cs->args, 1);
1174 
1175 	if (arg1 != NULL)
1176 		prefix = format_single(NULL, arg1, c, s, wl, wp);
1177 
1178 	if (s != NULL)
1179 		window_copy_copy_selection(wme, prefix);
1180 
1181 	free(prefix);
1182 	return (WINDOW_COPY_CMD_NOTHING);
1183 }
1184 
1185 static enum window_copy_cmd_action
1186 window_copy_cmd_copy_selection(struct window_copy_cmd_state *cs)
1187 {
1188 	struct window_mode_entry	*wme = cs->wme;
1189 
1190 	window_copy_cmd_copy_selection_no_clear(cs);
1191 	window_copy_clear_selection(wme);
1192 	return (WINDOW_COPY_CMD_REDRAW);
1193 }
1194 
1195 static enum window_copy_cmd_action
1196 window_copy_cmd_copy_selection_and_cancel(struct window_copy_cmd_state *cs)
1197 {
1198 	struct window_mode_entry	*wme = cs->wme;
1199 
1200 	window_copy_cmd_copy_selection_no_clear(cs);
1201 	window_copy_clear_selection(wme);
1202 	return (WINDOW_COPY_CMD_CANCEL);
1203 }
1204 
1205 static enum window_copy_cmd_action
1206 window_copy_cmd_cursor_down(struct window_copy_cmd_state *cs)
1207 {
1208 	struct window_mode_entry	*wme = cs->wme;
1209 	u_int				 np = wme->prefix;
1210 
1211 	for (; np != 0; np--)
1212 		window_copy_cursor_down(wme, 0);
1213 	return (WINDOW_COPY_CMD_NOTHING);
1214 }
1215 
1216 static enum window_copy_cmd_action
1217 window_copy_cmd_cursor_down_and_cancel(struct window_copy_cmd_state *cs)
1218 {
1219 	struct window_mode_entry	*wme = cs->wme;
1220 	struct window_copy_mode_data	*data = wme->data;
1221 	u_int				 np = wme->prefix, cy;
1222 
1223 	cy = data->cy;
1224 	for (; np != 0; np--)
1225 		window_copy_cursor_down(wme, 0);
1226 	if (cy == data->cy && data->oy == 0)
1227 		return (WINDOW_COPY_CMD_CANCEL);
1228 	return (WINDOW_COPY_CMD_NOTHING);
1229 }
1230 
1231 static enum window_copy_cmd_action
1232 window_copy_cmd_cursor_left(struct window_copy_cmd_state *cs)
1233 {
1234 	struct window_mode_entry	*wme = cs->wme;
1235 	u_int				 np = wme->prefix;
1236 
1237 	for (; np != 0; np--)
1238 		window_copy_cursor_left(wme);
1239 	return (WINDOW_COPY_CMD_NOTHING);
1240 }
1241 
1242 static enum window_copy_cmd_action
1243 window_copy_cmd_cursor_right(struct window_copy_cmd_state *cs)
1244 {
1245 	struct window_mode_entry	*wme = cs->wme;
1246 	struct window_copy_mode_data	*data = wme->data;
1247 	u_int				 np = wme->prefix;
1248 
1249 	for (; np != 0; np--) {
1250 		window_copy_cursor_right(wme, data->screen.sel != NULL &&
1251 		    data->rectflag);
1252 	}
1253 	return (WINDOW_COPY_CMD_NOTHING);
1254 }
1255 
1256 /* Scroll line containing the cursor to the given position. */
1257 static enum window_copy_cmd_action
1258 window_copy_cmd_scroll_to(struct window_copy_cmd_state *cs, u_int to)
1259 {
1260 	struct window_mode_entry	*wme = cs->wme;
1261 	struct window_copy_mode_data	*data = wme->data;
1262 	u_int				 oy, delta;
1263 	int				 scroll_up; /* >0 up, <0 down */
1264 
1265 	scroll_up = data->cy - to;
1266 	delta = abs(scroll_up);
1267 	oy = screen_hsize(data->backing) - data->oy;
1268 
1269 	/*
1270 	 * oy is the maximum scroll down amount, while data->oy is the maximum
1271 	 * scroll up amount.
1272 	 */
1273 	if (scroll_up > 0 && data->oy >= delta) {
1274 		window_copy_scroll_up(wme, delta);
1275 		data->cy -= delta;
1276 	} else if (scroll_up < 0 && oy >= delta) {
1277 		window_copy_scroll_down(wme, delta);
1278 		data->cy += delta;
1279 	}
1280 
1281 	window_copy_update_selection(wme, 0, 0);
1282 	return (WINDOW_COPY_CMD_REDRAW);
1283 }
1284 
1285 /* Scroll line containing the cursor to the bottom. */
1286 static enum window_copy_cmd_action
1287 window_copy_cmd_scroll_bottom(struct window_copy_cmd_state *cs)
1288 {
1289 	struct window_copy_mode_data	*data = cs->wme->data;
1290 	u_int				 bottom;
1291 
1292 	bottom = screen_size_y(&data->screen) - 1;
1293 	return (window_copy_cmd_scroll_to(cs, bottom));
1294 }
1295 
1296 /* Scroll line containing the cursor to the middle. */
1297 static enum window_copy_cmd_action
1298 window_copy_cmd_scroll_middle(struct window_copy_cmd_state *cs)
1299 {
1300 	struct window_copy_mode_data	*data = cs->wme->data;
1301 	u_int				 mid_value;
1302 
1303 	mid_value = (screen_size_y(&data->screen) - 1) / 2;
1304 	return (window_copy_cmd_scroll_to(cs, mid_value));
1305 }
1306 
1307 /* Scroll line containing the cursor to the top. */
1308 static enum window_copy_cmd_action
1309 window_copy_cmd_scroll_top(struct window_copy_cmd_state *cs)
1310 {
1311 	return (window_copy_cmd_scroll_to(cs, 0));
1312 }
1313 
1314 static enum window_copy_cmd_action
1315 window_copy_cmd_cursor_up(struct window_copy_cmd_state *cs)
1316 {
1317 	struct window_mode_entry	*wme = cs->wme;
1318 	u_int				 np = wme->prefix;
1319 
1320 	for (; np != 0; np--)
1321 		window_copy_cursor_up(wme, 0);
1322 	return (WINDOW_COPY_CMD_NOTHING);
1323 }
1324 
1325 static enum window_copy_cmd_action
1326 window_copy_cmd_end_of_line(struct window_copy_cmd_state *cs)
1327 {
1328 	struct window_mode_entry	*wme = cs->wme;
1329 
1330 	window_copy_cursor_end_of_line(wme);
1331 	return (WINDOW_COPY_CMD_NOTHING);
1332 }
1333 
1334 static enum window_copy_cmd_action
1335 window_copy_cmd_halfpage_down(struct window_copy_cmd_state *cs)
1336 {
1337 	struct window_mode_entry	*wme = cs->wme;
1338 	struct window_copy_mode_data	*data = wme->data;
1339 	u_int				 np = wme->prefix;
1340 
1341 	for (; np != 0; np--) {
1342 		if (window_copy_pagedown(wme, 1, data->scroll_exit))
1343 			return (WINDOW_COPY_CMD_CANCEL);
1344 	}
1345 	return (WINDOW_COPY_CMD_NOTHING);
1346 }
1347 
1348 static enum window_copy_cmd_action
1349 window_copy_cmd_halfpage_down_and_cancel(struct window_copy_cmd_state *cs)
1350 {
1351 
1352 	struct window_mode_entry	*wme = cs->wme;
1353 	u_int				 np = wme->prefix;
1354 
1355 	for (; np != 0; np--) {
1356 		if (window_copy_pagedown(wme, 1, 1))
1357 			return (WINDOW_COPY_CMD_CANCEL);
1358 	}
1359 	return (WINDOW_COPY_CMD_NOTHING);
1360 }
1361 
1362 static enum window_copy_cmd_action
1363 window_copy_cmd_halfpage_up(struct window_copy_cmd_state *cs)
1364 {
1365 	struct window_mode_entry	*wme = cs->wme;
1366 	u_int				 np = wme->prefix;
1367 
1368 	for (; np != 0; np--)
1369 		window_copy_pageup1(wme, 1);
1370 	return (WINDOW_COPY_CMD_NOTHING);
1371 }
1372 
1373 static enum window_copy_cmd_action
1374 window_copy_cmd_toggle_position(struct window_copy_cmd_state *cs)
1375 {
1376 	struct window_mode_entry	*wme = cs->wme;
1377 	struct window_copy_mode_data	*data = wme->data;
1378 
1379 	data->hide_position = !data->hide_position;
1380 	return (WINDOW_COPY_CMD_REDRAW);
1381 }
1382 
1383 static enum window_copy_cmd_action
1384 window_copy_cmd_history_bottom(struct window_copy_cmd_state *cs)
1385 {
1386 	struct window_mode_entry	*wme = cs->wme;
1387 	struct window_copy_mode_data	*data = wme->data;
1388 	struct screen			*s = data->backing;
1389 	u_int				 oy;
1390 
1391 	oy = screen_hsize(s) + data->cy - data->oy;
1392 	if (data->lineflag == LINE_SEL_RIGHT_LEFT && oy == data->endsely)
1393 		window_copy_other_end(wme);
1394 
1395 	data->cy = screen_size_y(&data->screen) - 1;
1396 	data->cx = window_copy_find_length(wme, screen_hsize(s) + data->cy);
1397 	data->oy = 0;
1398 
1399 	if (data->searchmark != NULL && !data->timeout)
1400 		window_copy_search_marks(wme, NULL, data->searchregex, 1);
1401 	window_copy_update_selection(wme, 1, 0);
1402 	return (WINDOW_COPY_CMD_REDRAW);
1403 }
1404 
1405 static enum window_copy_cmd_action
1406 window_copy_cmd_history_top(struct window_copy_cmd_state *cs)
1407 {
1408 	struct window_mode_entry	*wme = cs->wme;
1409 	struct window_copy_mode_data	*data = wme->data;
1410 	u_int				 oy;
1411 
1412 	oy = screen_hsize(data->backing) + data->cy - data->oy;
1413 	if (data->lineflag == LINE_SEL_LEFT_RIGHT && oy == data->sely)
1414 		window_copy_other_end(wme);
1415 
1416 	data->cy = 0;
1417 	data->cx = 0;
1418 	data->oy = screen_hsize(data->backing);
1419 
1420 	if (data->searchmark != NULL && !data->timeout)
1421 		window_copy_search_marks(wme, NULL, data->searchregex, 1);
1422 	window_copy_update_selection(wme, 1, 0);
1423 	return (WINDOW_COPY_CMD_REDRAW);
1424 }
1425 
1426 static enum window_copy_cmd_action
1427 window_copy_cmd_jump_again(struct window_copy_cmd_state *cs)
1428 {
1429 	struct window_mode_entry	*wme = cs->wme;
1430 	struct window_copy_mode_data	*data = wme->data;
1431 	u_int				 np = wme->prefix;
1432 
1433 	switch (data->jumptype) {
1434 	case WINDOW_COPY_JUMPFORWARD:
1435 		for (; np != 0; np--)
1436 			window_copy_cursor_jump(wme);
1437 		break;
1438 	case WINDOW_COPY_JUMPBACKWARD:
1439 		for (; np != 0; np--)
1440 			window_copy_cursor_jump_back(wme);
1441 		break;
1442 	case WINDOW_COPY_JUMPTOFORWARD:
1443 		for (; np != 0; np--)
1444 			window_copy_cursor_jump_to(wme);
1445 		break;
1446 	case WINDOW_COPY_JUMPTOBACKWARD:
1447 		for (; np != 0; np--)
1448 			window_copy_cursor_jump_to_back(wme);
1449 		break;
1450 	}
1451 	return (WINDOW_COPY_CMD_NOTHING);
1452 }
1453 
1454 static enum window_copy_cmd_action
1455 window_copy_cmd_jump_reverse(struct window_copy_cmd_state *cs)
1456 {
1457 	struct window_mode_entry	*wme = cs->wme;
1458 	struct window_copy_mode_data	*data = wme->data;
1459 	u_int				 np = wme->prefix;
1460 
1461 	switch (data->jumptype) {
1462 	case WINDOW_COPY_JUMPFORWARD:
1463 		for (; np != 0; np--)
1464 			window_copy_cursor_jump_back(wme);
1465 		break;
1466 	case WINDOW_COPY_JUMPBACKWARD:
1467 		for (; np != 0; np--)
1468 			window_copy_cursor_jump(wme);
1469 		break;
1470 	case WINDOW_COPY_JUMPTOFORWARD:
1471 		for (; np != 0; np--)
1472 			window_copy_cursor_jump_to_back(wme);
1473 		break;
1474 	case WINDOW_COPY_JUMPTOBACKWARD:
1475 		for (; np != 0; np--)
1476 			window_copy_cursor_jump_to(wme);
1477 		break;
1478 	}
1479 	return (WINDOW_COPY_CMD_NOTHING);
1480 }
1481 
1482 static enum window_copy_cmd_action
1483 window_copy_cmd_middle_line(struct window_copy_cmd_state *cs)
1484 {
1485 	struct window_mode_entry	*wme = cs->wme;
1486 	struct window_copy_mode_data	*data = wme->data;
1487 
1488 	data->cx = 0;
1489 	data->cy = (screen_size_y(&data->screen) - 1) / 2;
1490 
1491 	window_copy_update_selection(wme, 1, 0);
1492 	return (WINDOW_COPY_CMD_REDRAW);
1493 }
1494 
1495 static enum window_copy_cmd_action
1496 window_copy_cmd_previous_matching_bracket(struct window_copy_cmd_state *cs)
1497 {
1498 	struct window_mode_entry	*wme = cs->wme;
1499 	u_int				 np = wme->prefix;
1500 	struct window_copy_mode_data	*data = wme->data;
1501 	struct screen			*s = data->backing;
1502 	char				 open[] = "{[(", close[] = "}])";
1503 	char				 tried, found, start, *cp;
1504 	u_int				 px, py, xx, n;
1505 	struct grid_cell		 gc;
1506 	int				 failed;
1507 
1508 	for (; np != 0; np--) {
1509 		/* Get cursor position and line length. */
1510 		px = data->cx;
1511 		py = screen_hsize(s) + data->cy - data->oy;
1512 		xx = window_copy_find_length(wme, py);
1513 		if (xx == 0)
1514 			break;
1515 
1516 		/*
1517 		 * Get the current character. If not on a bracket, try the
1518 		 * previous. If still not, then behave like previous-word.
1519 		 */
1520 		tried = 0;
1521 	retry:
1522 		grid_get_cell(s->grid, px, py, &gc);
1523 		if (gc.data.size != 1 || (gc.flags & GRID_FLAG_PADDING))
1524 			cp = NULL;
1525 		else {
1526 			found = *gc.data.data;
1527 			cp = strchr(close, found);
1528 		}
1529 		if (cp == NULL) {
1530 			if (data->modekeys == MODEKEY_EMACS) {
1531 				if (!tried && px > 0) {
1532 					px--;
1533 					tried = 1;
1534 					goto retry;
1535 				}
1536 				window_copy_cursor_previous_word(wme, close, 1);
1537 			}
1538 			continue;
1539 		}
1540 		start = open[cp - close];
1541 
1542 		/* Walk backward until the matching bracket is reached. */
1543 		n = 1;
1544 		failed = 0;
1545 		do {
1546 			if (px == 0) {
1547 				if (py == 0) {
1548 					failed = 1;
1549 					break;
1550 				}
1551 				do {
1552 					py--;
1553 					xx = window_copy_find_length(wme, py);
1554 				} while (xx == 0 && py > 0);
1555 				if (xx == 0 && py == 0) {
1556 					failed = 1;
1557 					break;
1558 				}
1559 				px = xx - 1;
1560 			} else
1561 				px--;
1562 
1563 			grid_get_cell(s->grid, px, py, &gc);
1564 			if (gc.data.size == 1 &&
1565 			    (~gc.flags & GRID_FLAG_PADDING)) {
1566 				if (*gc.data.data == found)
1567 					n++;
1568 				else if (*gc.data.data == start)
1569 					n--;
1570 			}
1571 		} while (n != 0);
1572 
1573 		/* Move the cursor to the found location if any. */
1574 		if (!failed)
1575 			window_copy_scroll_to(wme, px, py, 0);
1576 	}
1577 
1578 	return (WINDOW_COPY_CMD_NOTHING);
1579 }
1580 
1581 static enum window_copy_cmd_action
1582 window_copy_cmd_next_matching_bracket(struct window_copy_cmd_state *cs)
1583 {
1584 	struct window_mode_entry	*wme = cs->wme;
1585 	u_int				 np = wme->prefix;
1586 	struct window_copy_mode_data	*data = wme->data;
1587 	struct screen			*s = data->backing;
1588 	char				 open[] = "{[(", close[] = "}])";
1589 	char				 tried, found, end, *cp;
1590 	u_int				 px, py, xx, yy, sx, sy, n;
1591 	struct grid_cell		 gc;
1592 	int				 failed;
1593 	struct grid_line		*gl;
1594 
1595 	for (; np != 0; np--) {
1596 		/* Get cursor position and line length. */
1597 		px = data->cx;
1598 		py = screen_hsize(s) + data->cy - data->oy;
1599 		xx = window_copy_find_length(wme, py);
1600 		yy = screen_hsize(s) + screen_size_y(s) - 1;
1601 		if (xx == 0)
1602 			break;
1603 
1604 		/*
1605 		 * Get the current character. If not on a bracket, try the
1606 		 * next. If still not, then behave like next-word.
1607 		 */
1608 		tried = 0;
1609 	retry:
1610 		grid_get_cell(s->grid, px, py, &gc);
1611 		if (gc.data.size != 1 || (gc.flags & GRID_FLAG_PADDING))
1612 			cp = NULL;
1613 		else {
1614 			found = *gc.data.data;
1615 
1616 			/*
1617 			 * In vi mode, attempt to move to previous bracket if a
1618 			 * closing bracket is found first. If this fails,
1619 			 * return to the original cursor position.
1620 			 */
1621 			cp = strchr(close, found);
1622 			if (cp != NULL && data->modekeys == MODEKEY_VI) {
1623 				sx = data->cx;
1624 				sy = screen_hsize(s) + data->cy - data->oy;
1625 
1626 				window_copy_scroll_to(wme, px, py, 0);
1627 				window_copy_cmd_previous_matching_bracket(cs);
1628 
1629 				px = data->cx;
1630 				py = screen_hsize(s) + data->cy - data->oy;
1631 				grid_get_cell(s->grid, px, py, &gc);
1632 				if (gc.data.size == 1 &&
1633 				    (~gc.flags & GRID_FLAG_PADDING) &&
1634 				    strchr(close, *gc.data.data) != NULL)
1635 					window_copy_scroll_to(wme, sx, sy, 0);
1636 				break;
1637 			}
1638 
1639 			cp = strchr(open, found);
1640 		}
1641 		if (cp == NULL) {
1642 			if (data->modekeys == MODEKEY_EMACS) {
1643 				if (!tried && px <= xx) {
1644 					px++;
1645 					tried = 1;
1646 					goto retry;
1647 				}
1648 				window_copy_cursor_next_word_end(wme, open, 0);
1649 				continue;
1650 			}
1651 			/* For vi, continue searching for bracket until EOL. */
1652 			if (px > xx) {
1653 				if (py == yy)
1654 					continue;
1655 				gl = grid_get_line(s->grid, py);
1656 				if (~gl->flags & GRID_LINE_WRAPPED)
1657 					continue;
1658 				if (gl->cellsize > s->grid->sx)
1659 					continue;
1660 				px = 0;
1661 				py++;
1662 				xx = window_copy_find_length(wme, py);
1663 			} else
1664 				px++;
1665 			goto retry;
1666 		}
1667 		end = close[cp - open];
1668 
1669 		/* Walk forward until the matching bracket is reached. */
1670 		n = 1;
1671 		failed = 0;
1672 		do {
1673 			if (px > xx) {
1674 				if (py == yy) {
1675 					failed = 1;
1676 					break;
1677 				}
1678 				px = 0;
1679 				py++;
1680 				xx = window_copy_find_length(wme, py);
1681 			} else
1682 				px++;
1683 
1684 			grid_get_cell(s->grid, px, py, &gc);
1685 			if (gc.data.size == 1 &&
1686 			    (~gc.flags & GRID_FLAG_PADDING)) {
1687 				if (*gc.data.data == found)
1688 					n++;
1689 				else if (*gc.data.data == end)
1690 					n--;
1691 			}
1692 		} while (n != 0);
1693 
1694 		/* Move the cursor to the found location if any. */
1695 		if (!failed)
1696 			window_copy_scroll_to(wme, px, py, 0);
1697 	}
1698 
1699 	return (WINDOW_COPY_CMD_NOTHING);
1700 }
1701 
1702 static enum window_copy_cmd_action
1703 window_copy_cmd_next_paragraph(struct window_copy_cmd_state *cs)
1704 {
1705 	struct window_mode_entry	*wme = cs->wme;
1706 	u_int				 np = wme->prefix;
1707 
1708 	for (; np != 0; np--)
1709 		window_copy_next_paragraph(wme);
1710 	return (WINDOW_COPY_CMD_NOTHING);
1711 }
1712 
1713 static enum window_copy_cmd_action
1714 window_copy_cmd_next_space(struct window_copy_cmd_state *cs)
1715 {
1716 	struct window_mode_entry	*wme = cs->wme;
1717 	u_int				 np = wme->prefix;
1718 
1719 	for (; np != 0; np--)
1720 		window_copy_cursor_next_word(wme, "");
1721 	return (WINDOW_COPY_CMD_NOTHING);
1722 }
1723 
1724 static enum window_copy_cmd_action
1725 window_copy_cmd_next_space_end(struct window_copy_cmd_state *cs)
1726 {
1727 	struct window_mode_entry	*wme = cs->wme;
1728 	u_int				 np = wme->prefix;
1729 
1730 	for (; np != 0; np--)
1731 		window_copy_cursor_next_word_end(wme, "", 0);
1732 	return (WINDOW_COPY_CMD_NOTHING);
1733 }
1734 
1735 static enum window_copy_cmd_action
1736 window_copy_cmd_next_word(struct window_copy_cmd_state *cs)
1737 {
1738 	struct window_mode_entry	*wme = cs->wme;
1739 	u_int				 np = wme->prefix;
1740 	const char			*separators;
1741 
1742 	separators = options_get_string(cs->s->options, "word-separators");
1743 
1744 	for (; np != 0; np--)
1745 		window_copy_cursor_next_word(wme, separators);
1746 	return (WINDOW_COPY_CMD_NOTHING);
1747 }
1748 
1749 static enum window_copy_cmd_action
1750 window_copy_cmd_next_word_end(struct window_copy_cmd_state *cs)
1751 {
1752 	struct window_mode_entry	*wme = cs->wme;
1753 	u_int				 np = wme->prefix;
1754 	const char			*separators;
1755 
1756 	separators = options_get_string(cs->s->options, "word-separators");
1757 
1758 	for (; np != 0; np--)
1759 		window_copy_cursor_next_word_end(wme, separators, 0);
1760 	return (WINDOW_COPY_CMD_NOTHING);
1761 }
1762 
1763 static enum window_copy_cmd_action
1764 window_copy_cmd_other_end(struct window_copy_cmd_state *cs)
1765 {
1766 	struct window_mode_entry	*wme = cs->wme;
1767 	u_int				 np = wme->prefix;
1768 	struct window_copy_mode_data	*data = wme->data;
1769 
1770 	data->selflag = SEL_CHAR;
1771 	if ((np % 2) != 0)
1772 		window_copy_other_end(wme);
1773 	return (WINDOW_COPY_CMD_NOTHING);
1774 }
1775 
1776 static enum window_copy_cmd_action
1777 window_copy_cmd_page_down(struct window_copy_cmd_state *cs)
1778 {
1779 	struct window_mode_entry	*wme = cs->wme;
1780 	struct window_copy_mode_data	*data = wme->data;
1781 	u_int				 np = wme->prefix;
1782 
1783 	for (; np != 0; np--) {
1784 		if (window_copy_pagedown(wme, 0, data->scroll_exit))
1785 			return (WINDOW_COPY_CMD_CANCEL);
1786 	}
1787 	return (WINDOW_COPY_CMD_NOTHING);
1788 }
1789 
1790 static enum window_copy_cmd_action
1791 window_copy_cmd_page_down_and_cancel(struct window_copy_cmd_state *cs)
1792 {
1793 	struct window_mode_entry	*wme = cs->wme;
1794 	u_int				 np = wme->prefix;
1795 
1796 	for (; np != 0; np--) {
1797 		if (window_copy_pagedown(wme, 0, 1))
1798 			return (WINDOW_COPY_CMD_CANCEL);
1799 	}
1800 	return (WINDOW_COPY_CMD_NOTHING);
1801 }
1802 
1803 static enum window_copy_cmd_action
1804 window_copy_cmd_page_up(struct window_copy_cmd_state *cs)
1805 {
1806 	struct window_mode_entry	*wme = cs->wme;
1807 	u_int				 np = wme->prefix;
1808 
1809 	for (; np != 0; np--)
1810 		window_copy_pageup1(wme, 0);
1811 	return (WINDOW_COPY_CMD_NOTHING);
1812 }
1813 
1814 static enum window_copy_cmd_action
1815 window_copy_cmd_previous_paragraph(struct window_copy_cmd_state *cs)
1816 {
1817 	struct window_mode_entry	*wme = cs->wme;
1818 	u_int				 np = wme->prefix;
1819 
1820 	for (; np != 0; np--)
1821 		window_copy_previous_paragraph(wme);
1822 	return (WINDOW_COPY_CMD_NOTHING);
1823 }
1824 
1825 static enum window_copy_cmd_action
1826 window_copy_cmd_previous_space(struct window_copy_cmd_state *cs)
1827 {
1828 	struct window_mode_entry	*wme = cs->wme;
1829 	u_int				 np = wme->prefix;
1830 
1831 	for (; np != 0; np--)
1832 		window_copy_cursor_previous_word(wme, "", 1);
1833 	return (WINDOW_COPY_CMD_NOTHING);
1834 }
1835 
1836 static enum window_copy_cmd_action
1837 window_copy_cmd_previous_word(struct window_copy_cmd_state *cs)
1838 {
1839 	struct window_mode_entry	*wme = cs->wme;
1840 	u_int				 np = wme->prefix;
1841 	const char			*separators;
1842 
1843 	separators = options_get_string(cs->s->options, "word-separators");
1844 
1845 	for (; np != 0; np--)
1846 		window_copy_cursor_previous_word(wme, separators, 1);
1847 	return (WINDOW_COPY_CMD_NOTHING);
1848 }
1849 
1850 static enum window_copy_cmd_action
1851 window_copy_cmd_rectangle_on(struct window_copy_cmd_state *cs)
1852 {
1853 	struct window_mode_entry	*wme = cs->wme;
1854 	struct window_copy_mode_data	*data = wme->data;
1855 
1856 	data->lineflag = LINE_SEL_NONE;
1857 	window_copy_rectangle_set(wme, 1);
1858 
1859 	return (WINDOW_COPY_CMD_NOTHING);
1860 }
1861 
1862 static enum window_copy_cmd_action
1863 window_copy_cmd_rectangle_off(struct window_copy_cmd_state *cs)
1864 {
1865 	struct window_mode_entry	*wme = cs->wme;
1866 	struct window_copy_mode_data	*data = wme->data;
1867 
1868 	data->lineflag = LINE_SEL_NONE;
1869 	window_copy_rectangle_set(wme, 0);
1870 
1871 	return (WINDOW_COPY_CMD_NOTHING);
1872 }
1873 
1874 static enum window_copy_cmd_action
1875 window_copy_cmd_rectangle_toggle(struct window_copy_cmd_state *cs)
1876 {
1877 	struct window_mode_entry	*wme = cs->wme;
1878 	struct window_copy_mode_data	*data = wme->data;
1879 
1880 	data->lineflag = LINE_SEL_NONE;
1881 	window_copy_rectangle_set(wme, !data->rectflag);
1882 
1883 	return (WINDOW_COPY_CMD_NOTHING);
1884 }
1885 
1886 static enum window_copy_cmd_action
1887 window_copy_cmd_scroll_down(struct window_copy_cmd_state *cs)
1888 {
1889 	struct window_mode_entry	*wme = cs->wme;
1890 	struct window_copy_mode_data	*data = wme->data;
1891 	u_int				 np = wme->prefix;
1892 
1893 	for (; np != 0; np--)
1894 		window_copy_cursor_down(wme, 1);
1895 	if (data->scroll_exit && data->oy == 0)
1896 		return (WINDOW_COPY_CMD_CANCEL);
1897 	return (WINDOW_COPY_CMD_NOTHING);
1898 }
1899 
1900 static enum window_copy_cmd_action
1901 window_copy_cmd_scroll_down_and_cancel(struct window_copy_cmd_state *cs)
1902 {
1903 	struct window_mode_entry	*wme = cs->wme;
1904 	struct window_copy_mode_data	*data = wme->data;
1905 	u_int				 np = wme->prefix;
1906 
1907 	for (; np != 0; np--)
1908 		window_copy_cursor_down(wme, 1);
1909 	if (data->oy == 0)
1910 		return (WINDOW_COPY_CMD_CANCEL);
1911 	return (WINDOW_COPY_CMD_NOTHING);
1912 }
1913 
1914 static enum window_copy_cmd_action
1915 window_copy_cmd_scroll_up(struct window_copy_cmd_state *cs)
1916 {
1917 	struct window_mode_entry	*wme = cs->wme;
1918 	u_int				 np = wme->prefix;
1919 
1920 	for (; np != 0; np--)
1921 		window_copy_cursor_up(wme, 1);
1922 	return (WINDOW_COPY_CMD_NOTHING);
1923 }
1924 
1925 static enum window_copy_cmd_action
1926 window_copy_cmd_search_again(struct window_copy_cmd_state *cs)
1927 {
1928 	struct window_mode_entry	*wme = cs->wme;
1929 	struct window_copy_mode_data	*data = wme->data;
1930 	u_int				 np = wme->prefix;
1931 
1932 	if (data->searchtype == WINDOW_COPY_SEARCHUP) {
1933 		for (; np != 0; np--)
1934 			window_copy_search_up(wme, data->searchregex);
1935 	} else if (data->searchtype == WINDOW_COPY_SEARCHDOWN) {
1936 		for (; np != 0; np--)
1937 			window_copy_search_down(wme, data->searchregex);
1938 	}
1939 	return (WINDOW_COPY_CMD_NOTHING);
1940 }
1941 
1942 static enum window_copy_cmd_action
1943 window_copy_cmd_search_reverse(struct window_copy_cmd_state *cs)
1944 {
1945 	struct window_mode_entry	*wme = cs->wme;
1946 	struct window_copy_mode_data	*data = wme->data;
1947 	u_int				 np = wme->prefix;
1948 
1949 	if (data->searchtype == WINDOW_COPY_SEARCHUP) {
1950 		for (; np != 0; np--)
1951 			window_copy_search_down(wme, data->searchregex);
1952 	} else if (data->searchtype == WINDOW_COPY_SEARCHDOWN) {
1953 		for (; np != 0; np--)
1954 			window_copy_search_up(wme, data->searchregex);
1955 	}
1956 	return (WINDOW_COPY_CMD_NOTHING);
1957 }
1958 
1959 static enum window_copy_cmd_action
1960 window_copy_cmd_select_line(struct window_copy_cmd_state *cs)
1961 {
1962 	struct window_mode_entry	*wme = cs->wme;
1963 	struct window_copy_mode_data	*data = wme->data;
1964 	u_int				 np = wme->prefix;
1965 
1966 	data->lineflag = LINE_SEL_LEFT_RIGHT;
1967 	data->rectflag = 0;
1968 	data->selflag = SEL_LINE;
1969 	data->dx = data->cx;
1970 	data->dy = screen_hsize(data->backing) + data->cy - data->oy;
1971 
1972 	window_copy_cursor_start_of_line(wme);
1973 	data->selrx = data->cx;
1974 	data->selry = screen_hsize(data->backing) + data->cy - data->oy;
1975 	data->endselry = data->selry;
1976 	window_copy_start_selection(wme);
1977 	window_copy_cursor_end_of_line(wme);
1978 	data->endselry = screen_hsize(data->backing) + data->cy - data->oy;
1979 	data->endselrx = window_copy_find_length(wme, data->endselry);
1980 	for (; np > 1; np--) {
1981 		window_copy_cursor_down(wme, 0);
1982 		window_copy_cursor_end_of_line(wme);
1983 	}
1984 
1985 	return (WINDOW_COPY_CMD_REDRAW);
1986 }
1987 
1988 static enum window_copy_cmd_action
1989 window_copy_cmd_select_word(struct window_copy_cmd_state *cs)
1990 {
1991 	struct window_mode_entry	*wme = cs->wme;
1992 	struct options			*session_options = cs->s->options;
1993 	struct window_copy_mode_data	*data = wme->data;
1994 	u_int				 px, py, nextx, nexty;
1995 
1996 	data->lineflag = LINE_SEL_LEFT_RIGHT;
1997 	data->rectflag = 0;
1998 	data->selflag = SEL_WORD;
1999 	data->dx = data->cx;
2000 	data->dy = screen_hsize(data->backing) + data->cy - data->oy;
2001 
2002 	data->separators = options_get_string(session_options,
2003 	    "word-separators");
2004 	window_copy_cursor_previous_word(wme, data->separators, 0);
2005 	px = data->cx;
2006 	py = screen_hsize(data->backing) + data->cy - data->oy;
2007 	data->selrx = px;
2008 	data->selry = py;
2009 	window_copy_start_selection(wme);
2010 
2011 	/* Handle single character words. */
2012 	nextx = px + 1;
2013 	nexty = py;
2014 	if (grid_get_line(data->backing->grid, nexty)->flags &
2015 	    GRID_LINE_WRAPPED && nextx > screen_size_x(data->backing) - 1) {
2016 		nextx = 0;
2017 		nexty++;
2018 	}
2019 	if (px >= window_copy_find_length(wme, py) ||
2020 	    !window_copy_in_set(wme, nextx, nexty, WHITESPACE))
2021 		window_copy_cursor_next_word_end(wme, data->separators, 1);
2022 	else {
2023 		window_copy_update_cursor(wme, px, data->cy);
2024 		if (window_copy_update_selection(wme, 1, 1))
2025 			window_copy_redraw_lines(wme, data->cy, 1);
2026 	}
2027 	data->endselrx = data->cx;
2028 	data->endselry = screen_hsize(data->backing) + data->cy - data->oy;
2029 	if (data->dy > data->endselry) {
2030 		data->dy = data->endselry;
2031 		data->dx = data->endselrx;
2032 	} else if (data->dx > data->endselrx)
2033 		data->dx = data->endselrx;
2034 
2035 	return (WINDOW_COPY_CMD_REDRAW);
2036 }
2037 
2038 static enum window_copy_cmd_action
2039 window_copy_cmd_set_mark(struct window_copy_cmd_state *cs)
2040 {
2041 	struct window_copy_mode_data	*data = cs->wme->data;
2042 
2043 	data->mx = data->cx;
2044 	data->my = screen_hsize(data->backing) + data->cy - data->oy;
2045 	data->showmark = 1;
2046 	return (WINDOW_COPY_CMD_REDRAW);
2047 }
2048 
2049 static enum window_copy_cmd_action
2050 window_copy_cmd_start_of_line(struct window_copy_cmd_state *cs)
2051 {
2052 	struct window_mode_entry	*wme = cs->wme;
2053 
2054 	window_copy_cursor_start_of_line(wme);
2055 	return (WINDOW_COPY_CMD_NOTHING);
2056 }
2057 
2058 static enum window_copy_cmd_action
2059 window_copy_cmd_top_line(struct window_copy_cmd_state *cs)
2060 {
2061 	struct window_mode_entry	*wme = cs->wme;
2062 	struct window_copy_mode_data	*data = wme->data;
2063 
2064 	data->cx = 0;
2065 	data->cy = 0;
2066 
2067 	window_copy_update_selection(wme, 1, 0);
2068 	return (WINDOW_COPY_CMD_REDRAW);
2069 }
2070 
2071 static enum window_copy_cmd_action
2072 window_copy_cmd_copy_pipe_no_clear(struct window_copy_cmd_state *cs)
2073 {
2074 	struct window_mode_entry	*wme = cs->wme;
2075 	struct client			*c = cs->c;
2076 	struct session			*s = cs->s;
2077 	struct winlink			*wl = cs->wl;
2078 	struct window_pane		*wp = wme->wp;
2079 	char				*command = NULL, *prefix = NULL;
2080 	const char			*arg1 = args_string(cs->args, 1);
2081 	const char			*arg2 = args_string(cs->args, 2);
2082 
2083 	if (arg2 != NULL)
2084 		prefix = format_single(NULL, arg2, c, s, wl, wp);
2085 
2086 	if (s != NULL && arg1 != NULL && *arg1 != '\0')
2087 		command = format_single(NULL, arg1, c, s, wl, wp);
2088 	window_copy_copy_pipe(wme, s, prefix, command);
2089 	free(command);
2090 
2091 	free(prefix);
2092 	return (WINDOW_COPY_CMD_NOTHING);
2093 }
2094 
2095 static enum window_copy_cmd_action
2096 window_copy_cmd_copy_pipe(struct window_copy_cmd_state *cs)
2097 {
2098 	struct window_mode_entry	*wme = cs->wme;
2099 
2100 	window_copy_cmd_copy_pipe_no_clear(cs);
2101 	window_copy_clear_selection(wme);
2102 	return (WINDOW_COPY_CMD_REDRAW);
2103 }
2104 
2105 static enum window_copy_cmd_action
2106 window_copy_cmd_copy_pipe_and_cancel(struct window_copy_cmd_state *cs)
2107 {
2108 	struct window_mode_entry	*wme = cs->wme;
2109 
2110 	window_copy_cmd_copy_pipe_no_clear(cs);
2111 	window_copy_clear_selection(wme);
2112 	return (WINDOW_COPY_CMD_CANCEL);
2113 }
2114 
2115 static enum window_copy_cmd_action
2116 window_copy_cmd_pipe_no_clear(struct window_copy_cmd_state *cs)
2117 {
2118 	struct window_mode_entry	*wme = cs->wme;
2119 	struct client			*c = cs->c;
2120 	struct session			*s = cs->s;
2121 	struct winlink			*wl = cs->wl;
2122 	struct window_pane		*wp = wme->wp;
2123 	char				*command = NULL;
2124 	const char			*arg1 = args_string(cs->args, 1);
2125 
2126 	if (s != NULL && arg1 != NULL && *arg1 != '\0')
2127 		command = format_single(NULL, arg1, c, s, wl, wp);
2128 	window_copy_pipe(wme, s, command);
2129 	free(command);
2130 
2131 	return (WINDOW_COPY_CMD_NOTHING);
2132 }
2133 
2134 static enum window_copy_cmd_action
2135 window_copy_cmd_pipe(struct window_copy_cmd_state *cs)
2136 {
2137 	struct window_mode_entry	*wme = cs->wme;
2138 
2139 	window_copy_cmd_pipe_no_clear(cs);
2140 	window_copy_clear_selection(wme);
2141 	return (WINDOW_COPY_CMD_REDRAW);
2142 }
2143 
2144 static enum window_copy_cmd_action
2145 window_copy_cmd_pipe_and_cancel(struct window_copy_cmd_state *cs)
2146 {
2147 	struct window_mode_entry	*wme = cs->wme;
2148 
2149 	window_copy_cmd_pipe_no_clear(cs);
2150 	window_copy_clear_selection(wme);
2151 	return (WINDOW_COPY_CMD_CANCEL);
2152 }
2153 
2154 static enum window_copy_cmd_action
2155 window_copy_cmd_goto_line(struct window_copy_cmd_state *cs)
2156 {
2157 	struct window_mode_entry	*wme = cs->wme;
2158 	const char			*arg1 = args_string(cs->args, 1);
2159 
2160 	if (*arg1 != '\0')
2161 		window_copy_goto_line(wme, arg1);
2162 	return (WINDOW_COPY_CMD_NOTHING);
2163 }
2164 
2165 static enum window_copy_cmd_action
2166 window_copy_cmd_jump_backward(struct window_copy_cmd_state *cs)
2167 {
2168 	struct window_mode_entry	*wme = cs->wme;
2169 	struct window_copy_mode_data	*data = wme->data;
2170 	u_int				 np = wme->prefix;
2171 	const char			*arg1 = args_string(cs->args, 1);
2172 
2173 	if (*arg1 != '\0') {
2174 		data->jumptype = WINDOW_COPY_JUMPBACKWARD;
2175 		free(data->jumpchar);
2176 		data->jumpchar = utf8_fromcstr(arg1);
2177 		for (; np != 0; np--)
2178 			window_copy_cursor_jump_back(wme);
2179 	}
2180 	return (WINDOW_COPY_CMD_NOTHING);
2181 }
2182 
2183 static enum window_copy_cmd_action
2184 window_copy_cmd_jump_forward(struct window_copy_cmd_state *cs)
2185 {
2186 	struct window_mode_entry	*wme = cs->wme;
2187 	struct window_copy_mode_data	*data = wme->data;
2188 	u_int				 np = wme->prefix;
2189 	const char			*arg1 = args_string(cs->args, 1);
2190 
2191 	if (*arg1 != '\0') {
2192 		data->jumptype = WINDOW_COPY_JUMPFORWARD;
2193 		free(data->jumpchar);
2194 		data->jumpchar = utf8_fromcstr(arg1);
2195 		for (; np != 0; np--)
2196 			window_copy_cursor_jump(wme);
2197 	}
2198 	return (WINDOW_COPY_CMD_NOTHING);
2199 }
2200 
2201 static enum window_copy_cmd_action
2202 window_copy_cmd_jump_to_backward(struct window_copy_cmd_state *cs)
2203 {
2204 	struct window_mode_entry	*wme = cs->wme;
2205 	struct window_copy_mode_data	*data = wme->data;
2206 	u_int				 np = wme->prefix;
2207 	const char			*arg1 = args_string(cs->args, 1);
2208 
2209 	if (*arg1 != '\0') {
2210 		data->jumptype = WINDOW_COPY_JUMPTOBACKWARD;
2211 		free(data->jumpchar);
2212 		data->jumpchar = utf8_fromcstr(arg1);
2213 		for (; np != 0; np--)
2214 			window_copy_cursor_jump_to_back(wme);
2215 	}
2216 	return (WINDOW_COPY_CMD_NOTHING);
2217 }
2218 
2219 static enum window_copy_cmd_action
2220 window_copy_cmd_jump_to_forward(struct window_copy_cmd_state *cs)
2221 {
2222 	struct window_mode_entry	*wme = cs->wme;
2223 	struct window_copy_mode_data	*data = wme->data;
2224 	u_int				 np = wme->prefix;
2225 	const char			*arg1 = args_string(cs->args, 1);
2226 
2227 	if (*arg1 != '\0') {
2228 		data->jumptype = WINDOW_COPY_JUMPTOFORWARD;
2229 		free(data->jumpchar);
2230 		data->jumpchar = utf8_fromcstr(arg1);
2231 		for (; np != 0; np--)
2232 			window_copy_cursor_jump_to(wme);
2233 	}
2234 	return (WINDOW_COPY_CMD_NOTHING);
2235 }
2236 
2237 static enum window_copy_cmd_action
2238 window_copy_cmd_jump_to_mark(struct window_copy_cmd_state *cs)
2239 {
2240 	struct window_mode_entry	*wme = cs->wme;
2241 
2242 	window_copy_jump_to_mark(wme);
2243 	return (WINDOW_COPY_CMD_NOTHING);
2244 }
2245 
2246 static enum window_copy_cmd_action
2247 window_copy_cmd_next_prompt(struct window_copy_cmd_state *cs)
2248 {
2249 	struct window_mode_entry	*wme = cs->wme;
2250 	const char			*arg1 = args_string(cs->args, 1);
2251 
2252 	window_copy_cursor_prompt(wme, 1, arg1);
2253 	return (WINDOW_COPY_CMD_NOTHING);
2254 }
2255 
2256 static enum window_copy_cmd_action
2257 window_copy_cmd_previous_prompt(struct window_copy_cmd_state *cs)
2258 {
2259 	struct window_mode_entry	*wme = cs->wme;
2260 	const char			*arg1 = args_string(cs->args, 1);
2261 
2262 	window_copy_cursor_prompt(wme, 0, arg1);
2263 	return (WINDOW_COPY_CMD_NOTHING);
2264 }
2265 
2266 static enum window_copy_cmd_action
2267 window_copy_cmd_search_backward(struct window_copy_cmd_state *cs)
2268 {
2269 	struct window_mode_entry	*wme = cs->wme;
2270 	struct window_copy_mode_data	*data = wme->data;
2271 	u_int				 np = wme->prefix;
2272 
2273 	if (!window_copy_expand_search_string(cs))
2274 		return (WINDOW_COPY_CMD_NOTHING);
2275 
2276 	if (data->searchstr != NULL) {
2277 		data->searchtype = WINDOW_COPY_SEARCHUP;
2278 		data->searchregex = 1;
2279 		data->timeout = 0;
2280 		for (; np != 0; np--)
2281 			window_copy_search_up(wme, 1);
2282 	}
2283 	return (WINDOW_COPY_CMD_NOTHING);
2284 }
2285 
2286 static enum window_copy_cmd_action
2287 window_copy_cmd_search_backward_text(struct window_copy_cmd_state *cs)
2288 {
2289 	struct window_mode_entry	*wme = cs->wme;
2290 	struct window_copy_mode_data	*data = wme->data;
2291 	u_int				 np = wme->prefix;
2292 
2293 	if (!window_copy_expand_search_string(cs))
2294 		return (WINDOW_COPY_CMD_NOTHING);
2295 
2296 	if (data->searchstr != NULL) {
2297 		data->searchtype = WINDOW_COPY_SEARCHUP;
2298 		data->searchregex = 0;
2299 		data->timeout = 0;
2300 		for (; np != 0; np--)
2301 			window_copy_search_up(wme, 0);
2302 	}
2303 	return (WINDOW_COPY_CMD_NOTHING);
2304 }
2305 
2306 static enum window_copy_cmd_action
2307 window_copy_cmd_search_forward(struct window_copy_cmd_state *cs)
2308 {
2309 	struct window_mode_entry	*wme = cs->wme;
2310 	struct window_copy_mode_data	*data = wme->data;
2311 	u_int				 np = wme->prefix;
2312 
2313 	if (!window_copy_expand_search_string(cs))
2314 		return (WINDOW_COPY_CMD_NOTHING);
2315 
2316 	if (data->searchstr != NULL) {
2317 		data->searchtype = WINDOW_COPY_SEARCHDOWN;
2318 		data->searchregex = 1;
2319 		data->timeout = 0;
2320 		for (; np != 0; np--)
2321 			window_copy_search_down(wme, 1);
2322 	}
2323 	return (WINDOW_COPY_CMD_NOTHING);
2324 }
2325 
2326 static enum window_copy_cmd_action
2327 window_copy_cmd_search_forward_text(struct window_copy_cmd_state *cs)
2328 {
2329 	struct window_mode_entry	*wme = cs->wme;
2330 	struct window_copy_mode_data	*data = wme->data;
2331 	u_int				 np = wme->prefix;
2332 
2333 	if (!window_copy_expand_search_string(cs))
2334 		return (WINDOW_COPY_CMD_NOTHING);
2335 
2336 	if (data->searchstr != NULL) {
2337 		data->searchtype = WINDOW_COPY_SEARCHDOWN;
2338 		data->searchregex = 0;
2339 		data->timeout = 0;
2340 		for (; np != 0; np--)
2341 			window_copy_search_down(wme, 0);
2342 	}
2343 	return (WINDOW_COPY_CMD_NOTHING);
2344 }
2345 
2346 static enum window_copy_cmd_action
2347 window_copy_cmd_search_backward_incremental(struct window_copy_cmd_state *cs)
2348 {
2349 	struct window_mode_entry	*wme = cs->wme;
2350 	struct window_copy_mode_data	*data = wme->data;
2351 	const char			*arg1 = args_string(cs->args, 1);
2352 	const char			*ss = data->searchstr;
2353 	char				 prefix;
2354 	enum window_copy_cmd_action	 action = WINDOW_COPY_CMD_NOTHING;
2355 
2356 	data->timeout = 0;
2357 
2358 	log_debug("%s: %s", __func__, arg1);
2359 
2360 	prefix = *arg1++;
2361 	if (data->searchx == -1 || data->searchy == -1) {
2362 		data->searchx = data->cx;
2363 		data->searchy = data->cy;
2364 		data->searcho = data->oy;
2365 	} else if (ss != NULL && strcmp(arg1, ss) != 0) {
2366 		data->cx = data->searchx;
2367 		data->cy = data->searchy;
2368 		data->oy = data->searcho;
2369 		action = WINDOW_COPY_CMD_REDRAW;
2370 	}
2371 	if (*arg1 == '\0') {
2372 		window_copy_clear_marks(wme);
2373 		return (WINDOW_COPY_CMD_REDRAW);
2374 	}
2375 	switch (prefix) {
2376 	case '=':
2377 	case '-':
2378 		data->searchtype = WINDOW_COPY_SEARCHUP;
2379 		data->searchregex = 0;
2380 		free(data->searchstr);
2381 		data->searchstr = xstrdup(arg1);
2382 		if (!window_copy_search_up(wme, 0)) {
2383 			window_copy_clear_marks(wme);
2384 			return (WINDOW_COPY_CMD_REDRAW);
2385 		}
2386 		break;
2387 	case '+':
2388 		data->searchtype = WINDOW_COPY_SEARCHDOWN;
2389 		data->searchregex = 0;
2390 		free(data->searchstr);
2391 		data->searchstr = xstrdup(arg1);
2392 		if (!window_copy_search_down(wme, 0)) {
2393 			window_copy_clear_marks(wme);
2394 			return (WINDOW_COPY_CMD_REDRAW);
2395 		}
2396 		break;
2397 	}
2398 	return (action);
2399 }
2400 
2401 static enum window_copy_cmd_action
2402 window_copy_cmd_search_forward_incremental(struct window_copy_cmd_state *cs)
2403 {
2404 	struct window_mode_entry	*wme = cs->wme;
2405 	struct window_copy_mode_data	*data = wme->data;
2406 	const char			*arg1 = args_string(cs->args, 1);
2407 	const char			*ss = data->searchstr;
2408 	char				 prefix;
2409 	enum window_copy_cmd_action	 action = WINDOW_COPY_CMD_NOTHING;
2410 
2411 	data->timeout = 0;
2412 
2413 	log_debug("%s: %s", __func__, arg1);
2414 
2415 	prefix = *arg1++;
2416 	if (data->searchx == -1 || data->searchy == -1) {
2417 		data->searchx = data->cx;
2418 		data->searchy = data->cy;
2419 		data->searcho = data->oy;
2420 	} else if (ss != NULL && strcmp(arg1, ss) != 0) {
2421 		data->cx = data->searchx;
2422 		data->cy = data->searchy;
2423 		data->oy = data->searcho;
2424 		action = WINDOW_COPY_CMD_REDRAW;
2425 	}
2426 	if (*arg1 == '\0') {
2427 		window_copy_clear_marks(wme);
2428 		return (WINDOW_COPY_CMD_REDRAW);
2429 	}
2430 	switch (prefix) {
2431 	case '=':
2432 	case '+':
2433 		data->searchtype = WINDOW_COPY_SEARCHDOWN;
2434 		data->searchregex = 0;
2435 		free(data->searchstr);
2436 		data->searchstr = xstrdup(arg1);
2437 		if (!window_copy_search_down(wme, 0)) {
2438 			window_copy_clear_marks(wme);
2439 			return (WINDOW_COPY_CMD_REDRAW);
2440 		}
2441 		break;
2442 	case '-':
2443 		data->searchtype = WINDOW_COPY_SEARCHUP;
2444 		data->searchregex = 0;
2445 		free(data->searchstr);
2446 		data->searchstr = xstrdup(arg1);
2447 		if (!window_copy_search_up(wme, 0)) {
2448 			window_copy_clear_marks(wme);
2449 			return (WINDOW_COPY_CMD_REDRAW);
2450 		}
2451 	}
2452 	return (action);
2453 }
2454 
2455 static enum window_copy_cmd_action
2456 window_copy_cmd_refresh_from_pane(struct window_copy_cmd_state *cs)
2457 {
2458 	struct window_mode_entry	*wme = cs->wme;
2459 	struct window_pane		*wp = wme->swp;
2460 	struct window_copy_mode_data	*data = wme->data;
2461 
2462 	if (data->viewmode)
2463 		return (WINDOW_COPY_CMD_NOTHING);
2464 
2465 	screen_free(data->backing);
2466 	free(data->backing);
2467 	data->backing = window_copy_clone_screen(&wp->base, &data->screen, NULL,   NULL, wme->swp != wme->wp);
2468 
2469 	window_copy_size_changed(wme);
2470 	return (WINDOW_COPY_CMD_REDRAW);
2471 }
2472 
2473 static const struct {
2474 	const char			 *command;
2475 	u_int				  minargs;
2476 	u_int				  maxargs;
2477 	enum window_copy_cmd_clear	  clear;
2478 	enum window_copy_cmd_action	(*f)(struct window_copy_cmd_state *);
2479 } window_copy_cmd_table[] = {
2480 	{ .command = "append-selection",
2481 	  .minargs = 0,
2482 	  .maxargs = 0,
2483 	  .clear = WINDOW_COPY_CMD_CLEAR_ALWAYS,
2484 	  .f = window_copy_cmd_append_selection
2485 	},
2486 	{ .command = "append-selection-and-cancel",
2487 	  .minargs = 0,
2488 	  .maxargs = 0,
2489 	  .clear = WINDOW_COPY_CMD_CLEAR_ALWAYS,
2490 	  .f = window_copy_cmd_append_selection_and_cancel
2491 	},
2492 	{ .command = "back-to-indentation",
2493 	  .minargs = 0,
2494 	  .maxargs = 0,
2495 	  .clear = WINDOW_COPY_CMD_CLEAR_ALWAYS,
2496 	  .f = window_copy_cmd_back_to_indentation
2497 	},
2498 	{ .command = "begin-selection",
2499 	  .minargs = 0,
2500 	  .maxargs = 0,
2501 	  .clear = WINDOW_COPY_CMD_CLEAR_ALWAYS,
2502 	  .f = window_copy_cmd_begin_selection
2503 	},
2504 	{ .command = "bottom-line",
2505 	  .minargs = 0,
2506 	  .maxargs = 0,
2507 	  .clear = WINDOW_COPY_CMD_CLEAR_EMACS_ONLY,
2508 	  .f = window_copy_cmd_bottom_line
2509 	},
2510 	{ .command = "cancel",
2511 	  .minargs = 0,
2512 	  .maxargs = 0,
2513 	  .clear = WINDOW_COPY_CMD_CLEAR_ALWAYS,
2514 	  .f = window_copy_cmd_cancel
2515 	},
2516 	{ .command = "clear-selection",
2517 	  .minargs = 0,
2518 	  .maxargs = 0,
2519 	  .clear = WINDOW_COPY_CMD_CLEAR_ALWAYS,
2520 	  .f = window_copy_cmd_clear_selection
2521 	},
2522 	{ .command = "copy-end-of-line",
2523 	  .minargs = 0,
2524 	  .maxargs = 1,
2525 	  .clear = WINDOW_COPY_CMD_CLEAR_ALWAYS,
2526 	  .f = window_copy_cmd_copy_end_of_line
2527 	},
2528 	{ .command = "copy-end-of-line-and-cancel",
2529 	  .minargs = 0,
2530 	  .maxargs = 1,
2531 	  .clear = WINDOW_COPY_CMD_CLEAR_ALWAYS,
2532 	  .f = window_copy_cmd_copy_end_of_line_and_cancel
2533 	},
2534 	{ .command = "copy-pipe-end-of-line",
2535 	  .minargs = 0,
2536 	  .maxargs = 2,
2537 	  .clear = WINDOW_COPY_CMD_CLEAR_ALWAYS,
2538 	  .f = window_copy_cmd_copy_pipe_end_of_line
2539 	},
2540 	{ .command = "copy-pipe-end-of-line-and-cancel",
2541 	  .minargs = 0,
2542 	  .maxargs = 2,
2543 	  .clear = WINDOW_COPY_CMD_CLEAR_ALWAYS,
2544 	  .f = window_copy_cmd_copy_pipe_end_of_line_and_cancel
2545 	},
2546 	{ .command = "copy-line",
2547 	  .minargs = 0,
2548 	  .maxargs = 1,
2549 	  .clear = WINDOW_COPY_CMD_CLEAR_ALWAYS,
2550 	  .f = window_copy_cmd_copy_line
2551 	},
2552 	{ .command = "copy-line-and-cancel",
2553 	  .minargs = 0,
2554 	  .maxargs = 1,
2555 	  .clear = WINDOW_COPY_CMD_CLEAR_ALWAYS,
2556 	  .f = window_copy_cmd_copy_line_and_cancel
2557 	},
2558 	{ .command = "copy-pipe-line",
2559 	  .minargs = 0,
2560 	  .maxargs = 2,
2561 	  .clear = WINDOW_COPY_CMD_CLEAR_ALWAYS,
2562 	  .f = window_copy_cmd_copy_pipe_line
2563 	},
2564 	{ .command = "copy-pipe-line-and-cancel",
2565 	  .minargs = 0,
2566 	  .maxargs = 2,
2567 	  .clear = WINDOW_COPY_CMD_CLEAR_ALWAYS,
2568 	  .f = window_copy_cmd_copy_pipe_line_and_cancel
2569 	},
2570 	{ .command = "copy-pipe-no-clear",
2571 	  .minargs = 0,
2572 	  .maxargs = 2,
2573 	  .clear = WINDOW_COPY_CMD_CLEAR_NEVER,
2574 	  .f = window_copy_cmd_copy_pipe_no_clear
2575 	},
2576 	{ .command = "copy-pipe",
2577 	  .minargs = 0,
2578 	  .maxargs = 2,
2579 	  .clear = WINDOW_COPY_CMD_CLEAR_ALWAYS,
2580 	  .f = window_copy_cmd_copy_pipe
2581 	},
2582 	{ .command = "copy-pipe-and-cancel",
2583 	  .minargs = 0,
2584 	  .maxargs = 2,
2585 	  .clear = WINDOW_COPY_CMD_CLEAR_ALWAYS,
2586 	  .f = window_copy_cmd_copy_pipe_and_cancel
2587 	},
2588 	{ .command = "copy-selection-no-clear",
2589 	  .minargs = 0,
2590 	  .maxargs = 1,
2591 	  .clear = WINDOW_COPY_CMD_CLEAR_NEVER,
2592 	  .f = window_copy_cmd_copy_selection_no_clear
2593 	},
2594 	{ .command = "copy-selection",
2595 	  .minargs = 0,
2596 	  .maxargs = 1,
2597 	  .clear = WINDOW_COPY_CMD_CLEAR_ALWAYS,
2598 	  .f = window_copy_cmd_copy_selection
2599 	},
2600 	{ .command = "copy-selection-and-cancel",
2601 	  .minargs = 0,
2602 	  .maxargs = 1,
2603 	  .clear = WINDOW_COPY_CMD_CLEAR_ALWAYS,
2604 	  .f = window_copy_cmd_copy_selection_and_cancel
2605 	},
2606 	{ .command = "cursor-down",
2607 	  .minargs = 0,
2608 	  .maxargs = 0,
2609 	  .clear = WINDOW_COPY_CMD_CLEAR_EMACS_ONLY,
2610 	  .f = window_copy_cmd_cursor_down
2611 	},
2612 	{ .command = "cursor-down-and-cancel",
2613 	  .minargs = 0,
2614 	  .maxargs = 0,
2615 	  .clear = WINDOW_COPY_CMD_CLEAR_ALWAYS,
2616 	  .f = window_copy_cmd_cursor_down_and_cancel
2617 	},
2618 	{ .command = "cursor-left",
2619 	  .minargs = 0,
2620 	  .maxargs = 0,
2621 	  .clear = WINDOW_COPY_CMD_CLEAR_EMACS_ONLY,
2622 	  .f = window_copy_cmd_cursor_left
2623 	},
2624 	{ .command = "cursor-right",
2625 	  .minargs = 0,
2626 	  .maxargs = 0,
2627 	  .clear = WINDOW_COPY_CMD_CLEAR_EMACS_ONLY,
2628 	  .f = window_copy_cmd_cursor_right
2629 	},
2630 	{ .command = "cursor-up",
2631 	  .minargs = 0,
2632 	  .maxargs = 0,
2633 	  .clear = WINDOW_COPY_CMD_CLEAR_EMACS_ONLY,
2634 	  .f = window_copy_cmd_cursor_up
2635 	},
2636 	{ .command = "end-of-line",
2637 	  .minargs = 0,
2638 	  .maxargs = 0,
2639 	  .clear = WINDOW_COPY_CMD_CLEAR_EMACS_ONLY,
2640 	  .f = window_copy_cmd_end_of_line
2641 	},
2642 	{ .command = "goto-line",
2643 	  .minargs = 1,
2644 	  .maxargs = 1,
2645 	  .clear = WINDOW_COPY_CMD_CLEAR_EMACS_ONLY,
2646 	  .f = window_copy_cmd_goto_line
2647 	},
2648 	{ .command = "halfpage-down",
2649 	  .minargs = 0,
2650 	  .maxargs = 0,
2651 	  .clear = WINDOW_COPY_CMD_CLEAR_EMACS_ONLY,
2652 	  .f = window_copy_cmd_halfpage_down
2653 	},
2654 	{ .command = "halfpage-down-and-cancel",
2655 	  .minargs = 0,
2656 	  .maxargs = 0,
2657 	  .clear = WINDOW_COPY_CMD_CLEAR_ALWAYS,
2658 	  .f = window_copy_cmd_halfpage_down_and_cancel
2659 	},
2660 	{ .command = "halfpage-up",
2661 	  .minargs = 0,
2662 	  .maxargs = 0,
2663 	  .clear = WINDOW_COPY_CMD_CLEAR_EMACS_ONLY,
2664 	  .f = window_copy_cmd_halfpage_up
2665 	},
2666 	{ .command = "history-bottom",
2667 	  .minargs = 0,
2668 	  .maxargs = 0,
2669 	  .clear = WINDOW_COPY_CMD_CLEAR_EMACS_ONLY,
2670 	  .f = window_copy_cmd_history_bottom
2671 	},
2672 	{ .command = "history-top",
2673 	  .minargs = 0,
2674 	  .maxargs = 0,
2675 	  .clear = WINDOW_COPY_CMD_CLEAR_EMACS_ONLY,
2676 	  .f = window_copy_cmd_history_top
2677 	},
2678 	{ .command = "jump-again",
2679 	  .minargs = 0,
2680 	  .maxargs = 0,
2681 	  .clear = WINDOW_COPY_CMD_CLEAR_EMACS_ONLY,
2682 	  .f = window_copy_cmd_jump_again
2683 	},
2684 	{ .command = "jump-backward",
2685 	  .minargs = 1,
2686 	  .maxargs = 1,
2687 	  .clear = WINDOW_COPY_CMD_CLEAR_EMACS_ONLY,
2688 	  .f = window_copy_cmd_jump_backward
2689 	},
2690 	{ .command = "jump-forward",
2691 	  .minargs = 1,
2692 	  .maxargs = 1,
2693 	  .clear = WINDOW_COPY_CMD_CLEAR_EMACS_ONLY,
2694 	  .f = window_copy_cmd_jump_forward
2695 	},
2696 	{ .command = "jump-reverse",
2697 	  .minargs = 0,
2698 	  .maxargs = 0,
2699 	  .clear = WINDOW_COPY_CMD_CLEAR_EMACS_ONLY,
2700 	  .f = window_copy_cmd_jump_reverse
2701 	},
2702 	{ .command = "jump-to-backward",
2703 	  .minargs = 1,
2704 	  .maxargs = 1,
2705 	  .clear = WINDOW_COPY_CMD_CLEAR_EMACS_ONLY,
2706 	  .f = window_copy_cmd_jump_to_backward
2707 	},
2708 	{ .command = "jump-to-forward",
2709 	  .minargs = 1,
2710 	  .maxargs = 1,
2711 	  .clear = WINDOW_COPY_CMD_CLEAR_EMACS_ONLY,
2712 	  .f = window_copy_cmd_jump_to_forward
2713 	},
2714 	{ .command = "jump-to-mark",
2715 	  .minargs = 0,
2716 	  .maxargs = 0,
2717 	  .clear = WINDOW_COPY_CMD_CLEAR_ALWAYS,
2718 	  .f = window_copy_cmd_jump_to_mark
2719 	},
2720 	{ .command = "next-prompt",
2721 	  .minargs = 0,
2722 	  .maxargs = 1,
2723 	  .clear = WINDOW_COPY_CMD_CLEAR_ALWAYS,
2724 	  .f = window_copy_cmd_next_prompt
2725 	},
2726 	{ .command = "previous-prompt",
2727 	  .minargs = 0,
2728 	  .maxargs = 1,
2729 	  .clear = WINDOW_COPY_CMD_CLEAR_ALWAYS,
2730 	  .f = window_copy_cmd_previous_prompt
2731 	},
2732 	{ .command = "middle-line",
2733 	  .minargs = 0,
2734 	  .maxargs = 0,
2735 	  .clear = WINDOW_COPY_CMD_CLEAR_EMACS_ONLY,
2736 	  .f = window_copy_cmd_middle_line
2737 	},
2738 	{ .command = "next-matching-bracket",
2739 	  .minargs = 0,
2740 	  .maxargs = 0,
2741 	  .clear = WINDOW_COPY_CMD_CLEAR_ALWAYS,
2742 	  .f = window_copy_cmd_next_matching_bracket
2743 	},
2744 	{ .command = "next-paragraph",
2745 	  .minargs = 0,
2746 	  .maxargs = 0,
2747 	  .clear = WINDOW_COPY_CMD_CLEAR_EMACS_ONLY,
2748 	  .f = window_copy_cmd_next_paragraph
2749 	},
2750 	{ .command = "next-space",
2751 	  .minargs = 0,
2752 	  .maxargs = 0,
2753 	  .clear = WINDOW_COPY_CMD_CLEAR_EMACS_ONLY,
2754 	  .f = window_copy_cmd_next_space
2755 	},
2756 	{ .command = "next-space-end",
2757 	  .minargs = 0,
2758 	  .maxargs = 0,
2759 	  .clear = WINDOW_COPY_CMD_CLEAR_EMACS_ONLY,
2760 	  .f = window_copy_cmd_next_space_end
2761 	},
2762 	{ .command = "next-word",
2763 	  .minargs = 0,
2764 	  .maxargs = 0,
2765 	  .clear = WINDOW_COPY_CMD_CLEAR_EMACS_ONLY,
2766 	  .f = window_copy_cmd_next_word
2767 	},
2768 	{ .command = "next-word-end",
2769 	  .minargs = 0,
2770 	  .maxargs = 0,
2771 	  .clear = WINDOW_COPY_CMD_CLEAR_EMACS_ONLY,
2772 	  .f = window_copy_cmd_next_word_end
2773 	},
2774 	{ .command = "other-end",
2775 	  .minargs = 0,
2776 	  .maxargs = 0,
2777 	  .clear = WINDOW_COPY_CMD_CLEAR_EMACS_ONLY,
2778 	  .f = window_copy_cmd_other_end
2779 	},
2780 	{ .command = "page-down",
2781 	  .minargs = 0,
2782 	  .maxargs = 0,
2783 	  .clear = WINDOW_COPY_CMD_CLEAR_EMACS_ONLY,
2784 	  .f = window_copy_cmd_page_down
2785 	},
2786 	{ .command = "page-down-and-cancel",
2787 	  .minargs = 0,
2788 	  .maxargs = 0,
2789 	  .clear = WINDOW_COPY_CMD_CLEAR_ALWAYS,
2790 	  .f = window_copy_cmd_page_down_and_cancel
2791 	},
2792 	{ .command = "page-up",
2793 	  .minargs = 0,
2794 	  .maxargs = 0,
2795 	  .clear = WINDOW_COPY_CMD_CLEAR_EMACS_ONLY,
2796 	  .f = window_copy_cmd_page_up
2797 	},
2798 	{ .command = "pipe-no-clear",
2799 	  .minargs = 0,
2800 	  .maxargs = 1,
2801 	  .clear = WINDOW_COPY_CMD_CLEAR_NEVER,
2802 	  .f = window_copy_cmd_pipe_no_clear
2803 	},
2804 	{ .command = "pipe",
2805 	  .minargs = 0,
2806 	  .maxargs = 1,
2807 	  .clear = WINDOW_COPY_CMD_CLEAR_ALWAYS,
2808 	  .f = window_copy_cmd_pipe
2809 	},
2810 	{ .command = "pipe-and-cancel",
2811 	  .minargs = 0,
2812 	  .maxargs = 1,
2813 	  .clear = WINDOW_COPY_CMD_CLEAR_ALWAYS,
2814 	  .f = window_copy_cmd_pipe_and_cancel
2815 	},
2816 	{ .command = "previous-matching-bracket",
2817 	  .minargs = 0,
2818 	  .maxargs = 0,
2819 	  .clear = WINDOW_COPY_CMD_CLEAR_ALWAYS,
2820 	  .f = window_copy_cmd_previous_matching_bracket
2821 	},
2822 	{ .command = "previous-paragraph",
2823 	  .minargs = 0,
2824 	  .maxargs = 0,
2825 	  .clear = WINDOW_COPY_CMD_CLEAR_EMACS_ONLY,
2826 	  .f = window_copy_cmd_previous_paragraph
2827 	},
2828 	{ .command = "previous-space",
2829 	  .minargs = 0,
2830 	  .maxargs = 0,
2831 	  .clear = WINDOW_COPY_CMD_CLEAR_EMACS_ONLY,
2832 	  .f = window_copy_cmd_previous_space
2833 	},
2834 	{ .command = "previous-word",
2835 	  .minargs = 0,
2836 	  .maxargs = 0,
2837 	  .clear = WINDOW_COPY_CMD_CLEAR_EMACS_ONLY,
2838 	  .f = window_copy_cmd_previous_word
2839 	},
2840 	{ .command = "rectangle-on",
2841 	  .minargs = 0,
2842 	  .maxargs = 0,
2843 	  .clear = WINDOW_COPY_CMD_CLEAR_ALWAYS,
2844 	  .f = window_copy_cmd_rectangle_on
2845 	},
2846 	{ .command = "rectangle-off",
2847 	  .minargs = 0,
2848 	  .maxargs = 0,
2849 	  .clear = WINDOW_COPY_CMD_CLEAR_ALWAYS,
2850 	  .f = window_copy_cmd_rectangle_off
2851 	},
2852 	{ .command = "rectangle-toggle",
2853 	  .minargs = 0,
2854 	  .maxargs = 0,
2855 	  .clear = WINDOW_COPY_CMD_CLEAR_ALWAYS,
2856 	  .f = window_copy_cmd_rectangle_toggle
2857 	},
2858 	{ .command = "refresh-from-pane",
2859 	  .minargs = 0,
2860 	  .maxargs = 0,
2861 	  .clear = WINDOW_COPY_CMD_CLEAR_ALWAYS,
2862 	  .f = window_copy_cmd_refresh_from_pane
2863 	},
2864 	{ .command = "scroll-bottom",
2865 	  .minargs = 0,
2866 	  .maxargs = 0,
2867 	  .clear = WINDOW_COPY_CMD_CLEAR_ALWAYS,
2868 	  .f = window_copy_cmd_scroll_bottom
2869 	},
2870 	{ .command = "scroll-down",
2871 	  .minargs = 0,
2872 	  .maxargs = 0,
2873 	  .clear = WINDOW_COPY_CMD_CLEAR_EMACS_ONLY,
2874 	  .f = window_copy_cmd_scroll_down
2875 	},
2876 	{ .command = "scroll-down-and-cancel",
2877 	  .minargs = 0,
2878 	  .maxargs = 0,
2879 	  .clear = WINDOW_COPY_CMD_CLEAR_ALWAYS,
2880 	  .f = window_copy_cmd_scroll_down_and_cancel
2881 	},
2882 	{ .command = "scroll-middle",
2883 	  .minargs = 0,
2884 	  .maxargs = 0,
2885 	  .clear = WINDOW_COPY_CMD_CLEAR_ALWAYS,
2886 	  .f = window_copy_cmd_scroll_middle
2887 	},
2888 	{ .command = "scroll-top",
2889 	  .minargs = 0,
2890 	  .maxargs = 0,
2891 	  .clear = WINDOW_COPY_CMD_CLEAR_ALWAYS,
2892 	  .f = window_copy_cmd_scroll_top
2893 	},
2894 	{ .command = "scroll-up",
2895 	  .minargs = 0,
2896 	  .maxargs = 0,
2897 	  .clear = WINDOW_COPY_CMD_CLEAR_EMACS_ONLY,
2898 	  .f = window_copy_cmd_scroll_up
2899 	},
2900 	{ .command = "search-again",
2901 	  .minargs = 0,
2902 	  .maxargs = 0,
2903 	  .clear = WINDOW_COPY_CMD_CLEAR_ALWAYS,
2904 	  .f = window_copy_cmd_search_again
2905 	},
2906 	{ .command = "search-backward",
2907 	  .minargs = 0,
2908 	  .maxargs = 1,
2909 	  .clear = WINDOW_COPY_CMD_CLEAR_ALWAYS,
2910 	  .f = window_copy_cmd_search_backward
2911 	},
2912 	{ .command = "search-backward-text",
2913 	  .minargs = 0,
2914 	  .maxargs = 1,
2915 	  .clear = WINDOW_COPY_CMD_CLEAR_ALWAYS,
2916 	  .f = window_copy_cmd_search_backward_text
2917 	},
2918 	{ .command = "search-backward-incremental",
2919 	  .minargs = 1,
2920 	  .maxargs = 1,
2921 	  .clear = WINDOW_COPY_CMD_CLEAR_ALWAYS,
2922 	  .f = window_copy_cmd_search_backward_incremental
2923 	},
2924 	{ .command = "search-forward",
2925 	  .minargs = 0,
2926 	  .maxargs = 1,
2927 	  .clear = WINDOW_COPY_CMD_CLEAR_ALWAYS,
2928 	  .f = window_copy_cmd_search_forward
2929 	},
2930 	{ .command = "search-forward-text",
2931 	  .minargs = 0,
2932 	  .maxargs = 1,
2933 	  .clear = WINDOW_COPY_CMD_CLEAR_ALWAYS,
2934 	  .f = window_copy_cmd_search_forward_text
2935 	},
2936 	{ .command = "search-forward-incremental",
2937 	  .minargs = 1,
2938 	  .maxargs = 1,
2939 	  .clear = WINDOW_COPY_CMD_CLEAR_ALWAYS,
2940 	  .f = window_copy_cmd_search_forward_incremental
2941 	},
2942 	{ .command = "search-reverse",
2943 	  .minargs = 0,
2944 	  .maxargs = 0,
2945 	  .clear = WINDOW_COPY_CMD_CLEAR_ALWAYS,
2946 	  .f = window_copy_cmd_search_reverse
2947 	},
2948 	{ .command = "select-line",
2949 	  .minargs = 0,
2950 	  .maxargs = 0,
2951 	  .clear = WINDOW_COPY_CMD_CLEAR_ALWAYS,
2952 	  .f = window_copy_cmd_select_line
2953 	},
2954 	{ .command = "select-word",
2955 	  .minargs = 0,
2956 	  .maxargs = 0,
2957 	  .clear = WINDOW_COPY_CMD_CLEAR_ALWAYS,
2958 	  .f = window_copy_cmd_select_word
2959 	},
2960 	{ .command = "set-mark",
2961 	  .minargs = 0,
2962 	  .maxargs = 0,
2963 	  .clear = WINDOW_COPY_CMD_CLEAR_ALWAYS,
2964 	  .f = window_copy_cmd_set_mark
2965 	},
2966 	{ .command = "start-of-line",
2967 	  .minargs = 0,
2968 	  .maxargs = 0,
2969 	  .clear = WINDOW_COPY_CMD_CLEAR_EMACS_ONLY,
2970 	  .f = window_copy_cmd_start_of_line
2971 	},
2972 	{ .command = "stop-selection",
2973 	  .minargs = 0,
2974 	  .maxargs = 0,
2975 	  .clear = WINDOW_COPY_CMD_CLEAR_ALWAYS,
2976 	  .f = window_copy_cmd_stop_selection
2977 	},
2978 	{ .command = "toggle-position",
2979 	  .minargs = 0,
2980 	  .maxargs = 0,
2981 	  .clear = WINDOW_COPY_CMD_CLEAR_NEVER,
2982 	  .f = window_copy_cmd_toggle_position
2983 	},
2984 	{ .command = "top-line",
2985 	  .minargs = 0,
2986 	  .maxargs = 0,
2987 	  .clear = WINDOW_COPY_CMD_CLEAR_EMACS_ONLY,
2988 	  .f = window_copy_cmd_top_line
2989 	}
2990 };
2991 
2992 static void
2993 window_copy_command(struct window_mode_entry *wme, struct client *c,
2994     struct session *s, struct winlink *wl, struct args *args,
2995     struct mouse_event *m)
2996 {
2997 	struct window_copy_mode_data	*data = wme->data;
2998 	struct window_copy_cmd_state	 cs;
2999 	enum window_copy_cmd_action	 action;
3000 	enum window_copy_cmd_clear	 clear = WINDOW_COPY_CMD_CLEAR_NEVER;
3001 	const char			*command;
3002 	u_int				 i, count = args_count(args);
3003 	int				 keys;
3004 
3005 	if (count == 0)
3006 		return;
3007 	command = args_string(args, 0);
3008 
3009 	if (m != NULL && m->valid && !MOUSE_WHEEL(m->b))
3010 		window_copy_move_mouse(m);
3011 
3012 	cs.wme = wme;
3013 	cs.args = args;
3014 	cs.m = m;
3015 
3016 	cs.c = c;
3017 	cs.s = s;
3018 	cs.wl = wl;
3019 
3020 	action = WINDOW_COPY_CMD_NOTHING;
3021 	for (i = 0; i < nitems(window_copy_cmd_table); i++) {
3022 		if (strcmp(window_copy_cmd_table[i].command, command) == 0) {
3023 			if (count - 1 < window_copy_cmd_table[i].minargs ||
3024 			    count - 1 > window_copy_cmd_table[i].maxargs)
3025 				break;
3026 			clear = window_copy_cmd_table[i].clear;
3027 			action = window_copy_cmd_table[i].f(&cs);
3028 			break;
3029 		}
3030 	}
3031 
3032 	if (strncmp(command, "search-", 7) != 0 && data->searchmark != NULL) {
3033 		keys = options_get_number(wme->wp->window->options, "mode-keys");
3034 		if (clear == WINDOW_COPY_CMD_CLEAR_EMACS_ONLY &&
3035 		    keys == MODEKEY_VI)
3036 			clear = WINDOW_COPY_CMD_CLEAR_NEVER;
3037 		if (clear != WINDOW_COPY_CMD_CLEAR_NEVER) {
3038 			window_copy_clear_marks(wme);
3039 			data->searchx = data->searchy = -1;
3040 		}
3041 		if (action == WINDOW_COPY_CMD_NOTHING)
3042 			action = WINDOW_COPY_CMD_REDRAW;
3043 	}
3044 	wme->prefix = 1;
3045 
3046 	if (action == WINDOW_COPY_CMD_CANCEL)
3047 		window_pane_reset_mode(wme->wp);
3048 	else if (action == WINDOW_COPY_CMD_REDRAW)
3049 		window_copy_redraw_screen(wme);
3050 }
3051 
3052 static void
3053 window_copy_scroll_to(struct window_mode_entry *wme, u_int px, u_int py,
3054     int no_redraw)
3055 {
3056 	struct window_copy_mode_data	*data = wme->data;
3057 	struct grid			*gd = data->backing->grid;
3058 	u_int				 offset, gap;
3059 
3060 	data->cx = px;
3061 
3062 	if (py >= gd->hsize - data->oy && py < gd->hsize - data->oy + gd->sy)
3063 		data->cy = py - (gd->hsize - data->oy);
3064 	else {
3065 		gap = gd->sy / 4;
3066 		if (py < gd->sy) {
3067 			offset = 0;
3068 			data->cy = py;
3069 		} else if (py > gd->hsize + gd->sy - gap) {
3070 			offset = gd->hsize;
3071 			data->cy = py - gd->hsize;
3072 		} else {
3073 			offset = py + gap - gd->sy;
3074 			data->cy = py - offset;
3075 		}
3076 		data->oy = gd->hsize - offset;
3077 	}
3078 
3079 	if (!no_redraw && data->searchmark != NULL && !data->timeout)
3080 		window_copy_search_marks(wme, NULL, data->searchregex, 1);
3081 	window_copy_update_selection(wme, 1, 0);
3082 	if (!no_redraw)
3083 		window_copy_redraw_screen(wme);
3084 }
3085 
3086 static int
3087 window_copy_search_compare(struct grid *gd, u_int px, u_int py,
3088     struct grid *sgd, u_int spx, int cis)
3089 {
3090 	struct grid_cell	 gc, sgc;
3091 	const struct utf8_data	*ud, *sud;
3092 
3093 	grid_get_cell(gd, px, py, &gc);
3094 	ud = &gc.data;
3095 	grid_get_cell(sgd, spx, 0, &sgc);
3096 	sud = &sgc.data;
3097 
3098 	if (ud->size != sud->size || ud->width != sud->width)
3099 		return (0);
3100 
3101 	if (cis && ud->size == 1)
3102 		return (tolower(ud->data[0]) == sud->data[0]);
3103 
3104 	return (memcmp(ud->data, sud->data, ud->size) == 0);
3105 }
3106 
3107 static int
3108 window_copy_search_lr(struct grid *gd, struct grid *sgd, u_int *ppx, u_int py,
3109     u_int first, u_int last, int cis)
3110 {
3111 	u_int			 ax, bx, px, pywrap, endline;
3112 	int			 matched;
3113 	struct grid_line	*gl;
3114 
3115 	endline = gd->hsize + gd->sy - 1;
3116 	for (ax = first; ax < last; ax++) {
3117 		for (bx = 0; bx < sgd->sx; bx++) {
3118 			px = ax + bx;
3119 			pywrap = py;
3120 			/* Wrap line. */
3121 			while (px >= gd->sx && pywrap < endline) {
3122 				gl = grid_get_line(gd, pywrap);
3123 				if (~gl->flags & GRID_LINE_WRAPPED)
3124 					break;
3125 				px -= gd->sx;
3126 				pywrap++;
3127 			}
3128 			/* We have run off the end of the grid. */
3129 			if (px >= gd->sx)
3130 				break;
3131 			matched = window_copy_search_compare(gd, px, pywrap,
3132 			    sgd, bx, cis);
3133 			if (!matched)
3134 				break;
3135 		}
3136 		if (bx == sgd->sx) {
3137 			*ppx = ax;
3138 			return (1);
3139 		}
3140 	}
3141 	return (0);
3142 }
3143 
3144 static int
3145 window_copy_search_rl(struct grid *gd,
3146     struct grid *sgd, u_int *ppx, u_int py, u_int first, u_int last, int cis)
3147 {
3148 	u_int			 ax, bx, px, pywrap, endline;
3149 	int			 matched;
3150 	struct grid_line	*gl;
3151 
3152 	endline = gd->hsize + gd->sy - 1;
3153 	for (ax = last; ax > first; ax--) {
3154 		for (bx = 0; bx < sgd->sx; bx++) {
3155 			px = ax - 1 + bx;
3156 			pywrap = py;
3157 			/* Wrap line. */
3158 			while (px >= gd->sx && pywrap < endline) {
3159 				gl = grid_get_line(gd, pywrap);
3160 				if (~gl->flags & GRID_LINE_WRAPPED)
3161 					break;
3162 				px -= gd->sx;
3163 				pywrap++;
3164 			}
3165 			/* We have run off the end of the grid. */
3166 			if (px >= gd->sx)
3167 				break;
3168 			matched = window_copy_search_compare(gd, px, pywrap,
3169 			    sgd, bx, cis);
3170 			if (!matched)
3171 				break;
3172 		}
3173 		if (bx == sgd->sx) {
3174 			*ppx = ax - 1;
3175 			return (1);
3176 		}
3177 	}
3178 	return (0);
3179 }
3180 
3181 static int
3182 window_copy_search_lr_regex(struct grid *gd, u_int *ppx, u_int *psx, u_int py,
3183     u_int first, u_int last, regex_t *reg)
3184 {
3185 	int			eflags = 0;
3186 	u_int			endline, foundx, foundy, len, pywrap, size = 1;
3187 	char		       *buf;
3188 	regmatch_t		regmatch;
3189 	struct grid_line       *gl;
3190 
3191 	/*
3192 	 * This can happen during search if the last match was the last
3193 	 * character on a line.
3194 	 */
3195 	if (first >= last)
3196 		return (0);
3197 
3198 	/* Set flags for regex search. */
3199 	if (first != 0)
3200 		eflags |= REG_NOTBOL;
3201 
3202 	/* Need to look at the entire string. */
3203 	buf = xmalloc(size);
3204 	buf[0] = '\0';
3205 	buf = window_copy_stringify(gd, py, first, gd->sx, buf, &size);
3206 	len = gd->sx - first;
3207 	endline = gd->hsize + gd->sy - 1;
3208 	pywrap = py;
3209 	while (buf != NULL &&
3210 	    pywrap <= endline &&
3211 	    len < WINDOW_COPY_SEARCH_MAX_LINE) {
3212 		gl = grid_get_line(gd, pywrap);
3213 		if (~gl->flags & GRID_LINE_WRAPPED)
3214 			break;
3215 		pywrap++;
3216 		buf = window_copy_stringify(gd, pywrap, 0, gd->sx, buf, &size);
3217 		len += gd->sx;
3218 	}
3219 
3220 	if (regexec(reg, buf, 1, &regmatch, eflags) == 0 &&
3221 	    regmatch.rm_so != regmatch.rm_eo) {
3222 		foundx = first;
3223 		foundy = py;
3224 		window_copy_cstrtocellpos(gd, len, &foundx, &foundy,
3225 		    buf + regmatch.rm_so);
3226 		if (foundy == py && foundx < last) {
3227 			*ppx = foundx;
3228 			len -= foundx - first;
3229 			window_copy_cstrtocellpos(gd, len, &foundx, &foundy,
3230 			    buf + regmatch.rm_eo);
3231 			*psx = foundx;
3232 			while (foundy > py) {
3233 				*psx += gd->sx;
3234 				foundy--;
3235 			}
3236 			*psx -= *ppx;
3237 			free(buf);
3238 			return (1);
3239 		}
3240 	}
3241 
3242 	free(buf);
3243 	*ppx = 0;
3244 	*psx = 0;
3245 	return (0);
3246 }
3247 
3248 static int
3249 window_copy_search_rl_regex(struct grid *gd, u_int *ppx, u_int *psx, u_int py,
3250     u_int first, u_int last, regex_t *reg)
3251 {
3252 	int			eflags = 0;
3253 	u_int			endline, len, pywrap, size = 1;
3254 	char		       *buf;
3255 	struct grid_line       *gl;
3256 
3257 	/* Set flags for regex search. */
3258 	if (first != 0)
3259 		eflags |= REG_NOTBOL;
3260 
3261 	/* Need to look at the entire string. */
3262 	buf = xmalloc(size);
3263 	buf[0] = '\0';
3264 	buf = window_copy_stringify(gd, py, first, gd->sx, buf, &size);
3265 	len = gd->sx - first;
3266 	endline = gd->hsize + gd->sy - 1;
3267 	pywrap = py;
3268 	while (buf != NULL &&
3269 	    pywrap <= endline &&
3270 	    len < WINDOW_COPY_SEARCH_MAX_LINE) {
3271 		gl = grid_get_line(gd, pywrap);
3272 		if (~gl->flags & GRID_LINE_WRAPPED)
3273 			break;
3274 		pywrap++;
3275 		buf = window_copy_stringify(gd, pywrap, 0, gd->sx, buf, &size);
3276 		len += gd->sx;
3277 	}
3278 
3279 	if (window_copy_last_regex(gd, py, first, last, len, ppx, psx, buf,
3280 	    reg, eflags))
3281 	{
3282 		free(buf);
3283 		return (1);
3284 	}
3285 
3286 	free(buf);
3287 	*ppx = 0;
3288 	*psx = 0;
3289 	return (0);
3290 }
3291 
3292 static const char *
3293 window_copy_cellstring(const struct grid_line *gl, u_int px, size_t *size,
3294     int *allocated)
3295 {
3296 	static struct utf8_data	 ud;
3297 	struct grid_cell_entry	*gce;
3298 	char			*copy;
3299 
3300 	if (px >= gl->cellsize) {
3301 		*size = 1;
3302 		*allocated = 0;
3303 		return (" ");
3304 	}
3305 
3306 	gce = &gl->celldata[px];
3307 	if (gce->flags & GRID_FLAG_PADDING) {
3308 		*size = 0;
3309 		*allocated = 0;
3310 		return (NULL);
3311 	}
3312 	if (~gce->flags & GRID_FLAG_EXTENDED) {
3313 		*size = 1;
3314 		*allocated = 0;
3315 		return (&gce->data.data);
3316 	}
3317 
3318 	utf8_to_data(gl->extddata[gce->offset].data, &ud);
3319 	if (ud.size == 0) {
3320 		*size = 0;
3321 		*allocated = 0;
3322 		return (NULL);
3323 	}
3324 	*size = ud.size;
3325 	*allocated = 1;
3326 
3327 	copy = xmalloc(ud.size);
3328 	memcpy(copy, ud.data, ud.size);
3329 	return (copy);
3330 }
3331 
3332 /* Find last match in given range. */
3333 static int
3334 window_copy_last_regex(struct grid *gd, u_int py, u_int first, u_int last,
3335     u_int len, u_int *ppx, u_int *psx, const char *buf, const regex_t *preg,
3336     int eflags)
3337 {
3338 	u_int		foundx, foundy, oldx, px = 0, savepx, savesx = 0;
3339 	regmatch_t	regmatch;
3340 
3341 	foundx = first;
3342 	foundy = py;
3343 	oldx = first;
3344 	while (regexec(preg, buf + px, 1, &regmatch, eflags) == 0) {
3345 		if (regmatch.rm_so == regmatch.rm_eo)
3346 			break;
3347 		window_copy_cstrtocellpos(gd, len, &foundx, &foundy,
3348 		    buf + px + regmatch.rm_so);
3349 		if (foundy > py || foundx >= last)
3350 			break;
3351 		len -= foundx - oldx;
3352 		savepx = foundx;
3353 		window_copy_cstrtocellpos(gd, len, &foundx, &foundy,
3354 		    buf + px + regmatch.rm_eo);
3355 		if (foundy > py || foundx >= last) {
3356 			*ppx = savepx;
3357 			*psx = foundx;
3358 			while (foundy > py) {
3359 				*psx += gd->sx;
3360 				foundy--;
3361 			}
3362 			*psx -= *ppx;
3363 			return (1);
3364 		} else {
3365 			savesx = foundx - savepx;
3366 			len -= savesx;
3367 			oldx = foundx;
3368 		}
3369 		px += regmatch.rm_eo;
3370 	}
3371 
3372 	if (savesx > 0) {
3373 		*ppx = savepx;
3374 		*psx = savesx;
3375 		return (1);
3376 	} else {
3377 		*ppx = 0;
3378 		*psx = 0;
3379 		return (0);
3380 	}
3381 }
3382 
3383 /* Stringify line and append to input buffer. Caller frees. */
3384 static char *
3385 window_copy_stringify(struct grid *gd, u_int py, u_int first, u_int last,
3386     char *buf, u_int *size)
3387 {
3388 	u_int			 ax, bx, newsize = *size;
3389 	const struct grid_line	*gl;
3390 	const char		*d;
3391 	size_t			 bufsize = 1024, dlen;
3392 	int			 allocated;
3393 
3394 	while (bufsize < newsize)
3395 		bufsize *= 2;
3396 	buf = xrealloc(buf, bufsize);
3397 
3398 	gl = grid_peek_line(gd, py);
3399 	bx = *size - 1;
3400 	for (ax = first; ax < last; ax++) {
3401 		d = window_copy_cellstring(gl, ax, &dlen, &allocated);
3402 		newsize += dlen;
3403 		while (bufsize < newsize) {
3404 			bufsize *= 2;
3405 			buf = xrealloc(buf, bufsize);
3406 		}
3407 		if (dlen == 1)
3408 			buf[bx++] = *d;
3409 		else {
3410 			memcpy(buf + bx, d, dlen);
3411 			bx += dlen;
3412 		}
3413 		if (allocated)
3414 			free((void *)d);
3415 	}
3416 	buf[newsize - 1] = '\0';
3417 
3418 	*size = newsize;
3419 	return (buf);
3420 }
3421 
3422 /* Map start of C string containing UTF-8 data to grid cell position. */
3423 static void
3424 window_copy_cstrtocellpos(struct grid *gd, u_int ncells, u_int *ppx, u_int *ppy,
3425     const char *str)
3426 {
3427 	u_int			 cell, ccell, px, pywrap, pos, len;
3428 	int			 match;
3429 	const struct grid_line	*gl;
3430 	const char		*d;
3431 	size_t			 dlen;
3432 	struct {
3433 		const char	*d;
3434 		size_t		 dlen;
3435 		int		 allocated;
3436 	} *cells;
3437 
3438 	/* Populate the array of cell data. */
3439 	cells = xreallocarray(NULL, ncells, sizeof cells[0]);
3440 	cell = 0;
3441 	px = *ppx;
3442 	pywrap = *ppy;
3443 	gl = grid_peek_line(gd, pywrap);
3444 	while (cell < ncells) {
3445 		cells[cell].d = window_copy_cellstring(gl, px,
3446 		    &cells[cell].dlen, &cells[cell].allocated);
3447 		cell++;
3448 		px++;
3449 		if (px == gd->sx) {
3450 			px = 0;
3451 			pywrap++;
3452 			gl = grid_peek_line(gd, pywrap);
3453 		}
3454 	}
3455 
3456 	/* Locate starting cell. */
3457 	cell = 0;
3458 	len = strlen(str);
3459 	while (cell < ncells) {
3460 		ccell = cell;
3461 		pos = 0;
3462 		match = 1;
3463 		while (ccell < ncells) {
3464 			if (str[pos] == '\0') {
3465 				match = 0;
3466 				break;
3467 			}
3468 			d = cells[ccell].d;
3469 			dlen = cells[ccell].dlen;
3470 			if (dlen == 1) {
3471 				if (str[pos] != *d) {
3472 					match = 0;
3473 					break;
3474 				}
3475 				pos++;
3476 			} else {
3477 				if (dlen > len - pos)
3478 					dlen = len - pos;
3479 				if (memcmp(str + pos, d, dlen) != 0) {
3480 					match = 0;
3481 					break;
3482 				}
3483 				pos += dlen;
3484 			}
3485 			ccell++;
3486 		}
3487 		if (match)
3488 			break;
3489 		cell++;
3490 	}
3491 
3492 	/* If not found this will be one past the end. */
3493 	px = *ppx + cell;
3494 	pywrap = *ppy;
3495 	while (px >= gd->sx) {
3496 		px -= gd->sx;
3497 		pywrap++;
3498 	}
3499 
3500 	*ppx = px;
3501 	*ppy = pywrap;
3502 
3503 	/* Free cell data. */
3504 	for (cell = 0; cell < ncells; cell++) {
3505 		if (cells[cell].allocated)
3506 			free((void *)cells[cell].d);
3507 	}
3508 	free(cells);
3509 }
3510 
3511 static void
3512 window_copy_move_left(struct screen *s, u_int *fx, u_int *fy, int wrapflag)
3513 {
3514 	if (*fx == 0) {	/* left */
3515 		if (*fy == 0) { /* top */
3516 			if (wrapflag) {
3517 				*fx = screen_size_x(s) - 1;
3518 				*fy = screen_hsize(s) + screen_size_y(s) - 1;
3519 			}
3520 			return;
3521 		}
3522 		*fx = screen_size_x(s) - 1;
3523 		*fy = *fy - 1;
3524 	} else
3525 		*fx = *fx - 1;
3526 }
3527 
3528 static void
3529 window_copy_move_right(struct screen *s, u_int *fx, u_int *fy, int wrapflag)
3530 {
3531 	if (*fx == screen_size_x(s) - 1) { /* right */
3532 		if (*fy == screen_hsize(s) + screen_size_y(s) - 1) { /* bottom */
3533 			if (wrapflag) {
3534 				*fx = 0;
3535 				*fy = 0;
3536 			}
3537 			return;
3538 		}
3539 		*fx = 0;
3540 		*fy = *fy + 1;
3541 	} else
3542 		*fx = *fx + 1;
3543 }
3544 
3545 static int
3546 window_copy_is_lowercase(const char *ptr)
3547 {
3548 	while (*ptr != '\0') {
3549 		if (*ptr != tolower((u_char)*ptr))
3550 			return (0);
3551 		++ptr;
3552 	}
3553 	return (1);
3554 }
3555 
3556 /*
3557  * Handle backward wrapped regex searches with overlapping matches. In this case
3558  * find the longest overlapping match from previous wrapped lines.
3559  */
3560 static void
3561 window_copy_search_back_overlap(struct grid *gd, regex_t *preg, u_int *ppx,
3562     u_int *psx, u_int *ppy, u_int endline)
3563 {
3564 	u_int	endx, endy, oldendx, oldendy, px, py, sx;
3565 	int	found = 1;
3566 
3567 	oldendx = *ppx + *psx;
3568 	oldendy = *ppy - 1;
3569 	while (oldendx > gd->sx - 1) {
3570 		oldendx -= gd->sx;
3571 		oldendy++;
3572 	}
3573 	endx = oldendx;
3574 	endy = oldendy;
3575 	px = *ppx;
3576 	py = *ppy;
3577 	while (found && px == 0 && py - 1 > endline &&
3578 	       grid_get_line(gd, py - 2)->flags & GRID_LINE_WRAPPED &&
3579 	       endx == oldendx && endy == oldendy) {
3580 		py--;
3581 		found = window_copy_search_rl_regex(gd, &px, &sx, py - 1, 0,
3582 		    gd->sx, preg);
3583 		if (found) {
3584 			endx = px + sx;
3585 			endy = py - 1;
3586 			while (endx > gd->sx - 1) {
3587 				endx -= gd->sx;
3588 				endy++;
3589 			}
3590 			if (endx == oldendx && endy == oldendy) {
3591 				*ppx = px;
3592 				*ppy = py;
3593 			}
3594 		}
3595 	}
3596 }
3597 
3598 /*
3599  * Search for text stored in sgd starting from position fx,fy up to endline. If
3600  * found, jump to it. If cis then ignore case. The direction is 0 for searching
3601  * up, down otherwise. If wrap then go to begin/end of grid and try again if
3602  * not found.
3603  */
3604 static int
3605 window_copy_search_jump(struct window_mode_entry *wme, struct grid *gd,
3606     struct grid *sgd, u_int fx, u_int fy, u_int endline, int cis, int wrap,
3607     int direction, int regex)
3608 {
3609 	u_int			 i, px, sx, ssize = 1;
3610 	int			 found = 0, cflags = REG_EXTENDED;
3611 	char			*sbuf;
3612 	regex_t			 reg;
3613 	struct grid_line	*gl;
3614 
3615 	if (regex) {
3616 		sbuf = xmalloc(ssize);
3617 		sbuf[0] = '\0';
3618 		sbuf = window_copy_stringify(sgd, 0, 0, sgd->sx, sbuf, &ssize);
3619 		if (cis)
3620 			cflags |= REG_ICASE;
3621 		if (regcomp(&reg, sbuf, cflags) != 0) {
3622 			free(sbuf);
3623 			return (0);
3624 		}
3625 		free(sbuf);
3626 	}
3627 
3628 	if (direction) {
3629 		for (i = fy; i <= endline; i++) {
3630 			gl = grid_get_line(gd, i);
3631 			if (i != endline && gl->flags & GRID_LINE_WRAPPED)
3632 				continue;
3633 			if (regex) {
3634 				found = window_copy_search_lr_regex(gd,
3635 				    &px, &sx, i, fx, gd->sx, &reg);
3636 			} else {
3637 				found = window_copy_search_lr(gd, sgd,
3638 				    &px, i, fx, gd->sx, cis);
3639 			}
3640 			if (found)
3641 				break;
3642 			fx = 0;
3643 		}
3644 	} else {
3645 		for (i = fy + 1; endline < i; i--) {
3646 			gl = grid_get_line(gd, i - 1);
3647 			if (i != endline && gl->flags & GRID_LINE_WRAPPED)
3648 				continue;
3649 			if (regex) {
3650 				found = window_copy_search_rl_regex(gd,
3651 				    &px, &sx, i - 1, 0, fx + 1, &reg);
3652 				if (found) {
3653 					window_copy_search_back_overlap(gd,
3654 					    &reg, &px, &sx, &i, endline);
3655 				}
3656 			} else {
3657 				found = window_copy_search_rl(gd, sgd,
3658 				    &px, i - 1, 0, fx + 1, cis);
3659 			}
3660 			if (found) {
3661 				i--;
3662 				break;
3663 			}
3664 			fx = gd->sx - 1;
3665 		}
3666 	}
3667 	if (regex)
3668 		regfree(&reg);
3669 
3670 	if (found) {
3671 		window_copy_scroll_to(wme, px, i, 1);
3672 		return (1);
3673 	}
3674 	if (wrap) {
3675 		return (window_copy_search_jump(wme, gd, sgd,
3676 		    direction ? 0 : gd->sx - 1,
3677 		    direction ? 0 : gd->hsize + gd->sy - 1, fy, cis, 0,
3678 		    direction, regex));
3679 	}
3680 	return (0);
3681 }
3682 
3683 static void
3684 window_copy_move_after_search_mark(struct window_copy_mode_data *data,
3685     u_int *fx, u_int *fy, int wrapflag)
3686 {
3687 	struct screen  *s = data->backing;
3688 	u_int		at, start;
3689 
3690 	if (window_copy_search_mark_at(data, *fx, *fy, &start) == 0 &&
3691 	    data->searchmark[start] != 0) {
3692 		while (window_copy_search_mark_at(data, *fx, *fy, &at) == 0) {
3693 			if (data->searchmark[at] != data->searchmark[start])
3694 				break;
3695 			/* Stop if not wrapping and at the end of the grid. */
3696 			if (!wrapflag &&
3697 			    *fx == screen_size_x(s) - 1 &&
3698 			    *fy == screen_hsize(s) + screen_size_y(s) - 1)
3699 				break;
3700 
3701 			window_copy_move_right(s, fx, fy, wrapflag);
3702 		}
3703 	}
3704 }
3705 
3706 /*
3707  * Search in for text searchstr. If direction is 0 then search up, otherwise
3708  * down.
3709  */
3710 static int
3711 window_copy_search(struct window_mode_entry *wme, int direction, int regex)
3712 {
3713 	struct window_pane		*wp = wme->wp;
3714 	struct window_copy_mode_data	*data = wme->data;
3715 	struct screen			*s = data->backing, ss;
3716 	struct screen_write_ctx		 ctx;
3717 	struct grid			*gd = s->grid;
3718 	const char			*str = data->searchstr;
3719 	u_int				 at, endline, fx, fy, start;
3720 	int				 cis, found, keys, visible_only;
3721 	int				 wrapflag;
3722 
3723 	if (regex && str[strcspn(str, "^$*+()?[].\\")] == '\0')
3724 		regex = 0;
3725 
3726 	data->searchdirection = direction;
3727 
3728 	if (data->timeout)
3729 		return (0);
3730 
3731 	if (data->searchall || wp->searchstr == NULL ||
3732 	    wp->searchregex != regex) {
3733 		visible_only = 0;
3734 		data->searchall = 0;
3735 	} else
3736 		visible_only = (strcmp(wp->searchstr, str) == 0);
3737 	if (visible_only == 0 && data->searchmark != NULL)
3738 		window_copy_clear_marks(wme);
3739 	free(wp->searchstr);
3740 	wp->searchstr = xstrdup(str);
3741 	wp->searchregex = regex;
3742 
3743 	fx = data->cx;
3744 	fy = screen_hsize(data->backing) - data->oy + data->cy;
3745 
3746 	screen_init(&ss, screen_write_strlen("%s", str), 1, 0);
3747 	screen_write_start(&ctx, &ss);
3748 	screen_write_nputs(&ctx, -1, &grid_default_cell, "%s", str);
3749 	screen_write_stop(&ctx);
3750 
3751 	wrapflag = options_get_number(wp->window->options, "wrap-search");
3752 	cis = window_copy_is_lowercase(str);
3753 
3754 	keys = options_get_number(wp->window->options, "mode-keys");
3755 
3756 	if (direction) {
3757 		/*
3758 		 * Behave according to mode-keys. If it is emacs, search forward
3759 		 * leaves the cursor after the match. If it is vi, the cursor
3760 		 * remains at the beginning of the match, regardless of
3761 		 * direction, which means that we need to start the next search
3762 		 * after the term the cursor is currently on when searching
3763 		 * forward.
3764 		 */
3765 		if (keys == MODEKEY_VI) {
3766 			if (data->searchmark != NULL)
3767 				window_copy_move_after_search_mark(data, &fx,
3768 				    &fy, wrapflag);
3769 			else {
3770 				/*
3771 				 * When there are no search marks, start the
3772 				 * search after the current cursor position.
3773 				 */
3774 				window_copy_move_right(s, &fx, &fy, wrapflag);
3775 			}
3776 		}
3777 		endline = gd->hsize + gd->sy - 1;
3778 	} else {
3779 		window_copy_move_left(s, &fx, &fy, wrapflag);
3780 		endline = 0;
3781 	}
3782 
3783 	found = window_copy_search_jump(wme, gd, ss.grid, fx, fy, endline, cis,
3784 	    wrapflag, direction, regex);
3785 	if (found) {
3786 		window_copy_search_marks(wme, &ss, regex, visible_only);
3787 		fx = data->cx;
3788 		fy = screen_hsize(data->backing) - data->oy + data->cy;
3789 
3790 		/*
3791 		 * When searching forward, if the cursor is not at the beginning
3792 		 * of the mark, search again.
3793 		 */
3794 		if (direction &&
3795 		    window_copy_search_mark_at(data, fx, fy, &at) == 0 &&
3796 		    at > 0 &&
3797 		    data->searchmark != NULL &&
3798 		    data->searchmark[at] == data->searchmark[at - 1]) {
3799 			window_copy_move_after_search_mark(data, &fx, &fy,
3800 			    wrapflag);
3801 			window_copy_search_jump(wme, gd, ss.grid, fx,
3802 			    fy, endline, cis, wrapflag, direction,
3803 			    regex);
3804 			fx = data->cx;
3805 			fy = screen_hsize(data->backing) - data->oy + data->cy;
3806 		}
3807 
3808 		if (direction) {
3809 			/*
3810 			 * When in Emacs mode, position the cursor just after
3811 			 * the mark.
3812 			 */
3813 			if (keys == MODEKEY_EMACS) {
3814 				window_copy_move_after_search_mark(data, &fx,
3815 				    &fy, wrapflag);
3816 				data->cx = fx;
3817 				data->cy = fy - screen_hsize(data->backing) +
3818 				    data-> oy;
3819 			}
3820 		} else {
3821 			/*
3822 			 * When searching backward, position the cursor at the
3823 			 * beginning of the mark.
3824 			 */
3825 			if (window_copy_search_mark_at(data, fx, fy,
3826 			        &start) == 0) {
3827 				while (window_copy_search_mark_at(data, fx, fy,
3828 				           &at) == 0 &&
3829 				       data->searchmark != NULL &&
3830 				       data->searchmark[at] ==
3831 				           data->searchmark[start]) {
3832 					data->cx = fx;
3833 					data->cy = fy -
3834 					    screen_hsize(data->backing) +
3835 					    data-> oy;
3836 					if (at == 0)
3837 						break;
3838 
3839 					window_copy_move_left(s, &fx, &fy, 0);
3840 				}
3841 			}
3842 		}
3843 	}
3844 	window_copy_redraw_screen(wme);
3845 
3846 	screen_free(&ss);
3847 	return (found);
3848 }
3849 
3850 static void
3851 window_copy_visible_lines(struct window_copy_mode_data *data, u_int *start,
3852     u_int *end)
3853 {
3854 	struct grid		*gd = data->backing->grid;
3855 	const struct grid_line	*gl;
3856 
3857 	for (*start = gd->hsize - data->oy; *start > 0; (*start)--) {
3858 		gl = grid_peek_line(gd, (*start) - 1);
3859 		if (~gl->flags & GRID_LINE_WRAPPED)
3860 			break;
3861 	}
3862 	*end = gd->hsize - data->oy + gd->sy;
3863 }
3864 
3865 static int
3866 window_copy_search_mark_at(struct window_copy_mode_data *data, u_int px,
3867     u_int py, u_int *at)
3868 {
3869 	struct screen	*s = data->backing;
3870 	struct grid	*gd = s->grid;
3871 
3872 	if (py < gd->hsize - data->oy)
3873 		return (-1);
3874 	if (py > gd->hsize - data->oy + gd->sy - 1)
3875 		return (-1);
3876 	*at = ((py - (gd->hsize - data->oy)) * gd->sx) + px;
3877 	return (0);
3878 }
3879 
3880 static int
3881 window_copy_search_marks(struct window_mode_entry *wme, struct screen *ssp,
3882     int regex, int visible_only)
3883 {
3884 	struct window_copy_mode_data	*data = wme->data;
3885 	struct screen			*s = data->backing, ss;
3886 	struct screen_write_ctx		 ctx;
3887 	struct grid			*gd = s->grid;
3888 	int				 found, cis, stopped = 0;
3889 	int				 cflags = REG_EXTENDED;
3890 	u_int				 px, py, i, b, nfound = 0, width;
3891 	u_int				 ssize = 1, start, end;
3892 	char				*sbuf;
3893 	regex_t				 reg;
3894 	uint64_t			 stop = 0, tstart, t;
3895 
3896 	if (ssp == NULL) {
3897 		width = screen_write_strlen("%s", data->searchstr);
3898 		screen_init(&ss, width, 1, 0);
3899 		screen_write_start(&ctx, &ss);
3900 		screen_write_nputs(&ctx, -1, &grid_default_cell, "%s",
3901 		    data->searchstr);
3902 		screen_write_stop(&ctx);
3903 		ssp = &ss;
3904 	} else
3905 		width = screen_size_x(ssp);
3906 
3907 	cis = window_copy_is_lowercase(data->searchstr);
3908 
3909 	if (regex) {
3910 		sbuf = xmalloc(ssize);
3911 		sbuf[0] = '\0';
3912 		sbuf = window_copy_stringify(ssp->grid, 0, 0, ssp->grid->sx,
3913 		    sbuf, &ssize);
3914 		if (cis)
3915 			cflags |= REG_ICASE;
3916 		if (regcomp(&reg, sbuf, cflags) != 0) {
3917 			free(sbuf);
3918 			return (0);
3919 		}
3920 		free(sbuf);
3921 	}
3922 	tstart = get_timer();
3923 
3924 	if (visible_only)
3925 		window_copy_visible_lines(data, &start, &end);
3926 	else {
3927 		start = 0;
3928 		end = gd->hsize + gd->sy;
3929 		stop = get_timer() + WINDOW_COPY_SEARCH_ALL_TIMEOUT;
3930 	}
3931 
3932 again:
3933 	free(data->searchmark);
3934 	data->searchmark = xcalloc(gd->sx, gd->sy);
3935 	data->searchgen = 1;
3936 
3937 	for (py = start; py < end; py++) {
3938 		px = 0;
3939 		for (;;) {
3940 			if (regex) {
3941 				found = window_copy_search_lr_regex(gd,
3942 				    &px, &width, py, px, gd->sx, &reg);
3943 				if (!found)
3944 					break;
3945 			} else {
3946 				found = window_copy_search_lr(gd, ssp->grid,
3947 				    &px, py, px, gd->sx, cis);
3948 				if (!found)
3949 					break;
3950 			}
3951 			nfound++;
3952 
3953 			if (window_copy_search_mark_at(data, px, py, &b) == 0) {
3954 				if (b + width > gd->sx * gd->sy)
3955 					width = (gd->sx * gd->sy) - b;
3956 				for (i = b; i < b + width; i++) {
3957 					if (data->searchmark[i] != 0)
3958 						continue;
3959 					data->searchmark[i] = data->searchgen;
3960 				}
3961 				if (data->searchgen == UCHAR_MAX)
3962 					data->searchgen = 1;
3963 				else
3964 					data->searchgen++;
3965 			}
3966 			px += width;
3967 		}
3968 
3969 		t = get_timer();
3970 		if (t - tstart > WINDOW_COPY_SEARCH_TIMEOUT) {
3971 			data->timeout = 1;
3972 			break;
3973 		}
3974 		if (stop != 0 && t > stop) {
3975 			stopped = 1;
3976 			break;
3977 		}
3978 	}
3979 	if (data->timeout) {
3980 		window_copy_clear_marks(wme);
3981 		goto out;
3982 	}
3983 
3984 	if (stopped && stop != 0) {
3985 		/* Try again but just the visible context. */
3986 		window_copy_visible_lines(data, &start, &end);
3987 		stop = 0;
3988 		goto again;
3989 	}
3990 
3991 	if (!visible_only) {
3992 		if (stopped) {
3993 			if (nfound > 1000)
3994 				data->searchcount = 1000;
3995 			else if (nfound > 100)
3996 				data->searchcount = 100;
3997 			else if (nfound > 10)
3998 				data->searchcount = 10;
3999 			else
4000 				data->searchcount = -1;
4001 			data->searchmore = 1;
4002 		} else {
4003 			data->searchcount = nfound;
4004 			data->searchmore = 0;
4005 		}
4006 	}
4007 
4008 out:
4009 	if (ssp == &ss)
4010 		screen_free(&ss);
4011 	if (regex)
4012 		regfree(&reg);
4013 	return (1);
4014 }
4015 
4016 static void
4017 window_copy_clear_marks(struct window_mode_entry *wme)
4018 {
4019 	struct window_copy_mode_data	*data = wme->data;
4020 
4021 	free(data->searchmark);
4022 	data->searchmark = NULL;
4023 }
4024 
4025 static int
4026 window_copy_search_up(struct window_mode_entry *wme, int regex)
4027 {
4028 	return (window_copy_search(wme, 0, regex));
4029 }
4030 
4031 static int
4032 window_copy_search_down(struct window_mode_entry *wme, int regex)
4033 {
4034 	return (window_copy_search(wme, 1, regex));
4035 }
4036 
4037 static void
4038 window_copy_goto_line(struct window_mode_entry *wme, const char *linestr)
4039 {
4040 	struct window_copy_mode_data	*data = wme->data;
4041 	const char			*errstr;
4042 	int				 lineno;
4043 
4044 	lineno = strtonum(linestr, -1, INT_MAX, &errstr);
4045 	if (errstr != NULL)
4046 		return;
4047 	if (lineno < 0 || (u_int)lineno > screen_hsize(data->backing))
4048 		lineno = screen_hsize(data->backing);
4049 
4050 	data->oy = lineno;
4051 	window_copy_update_selection(wme, 1, 0);
4052 	window_copy_redraw_screen(wme);
4053 }
4054 
4055 static void
4056 window_copy_match_start_end(struct window_copy_mode_data *data, u_int at,
4057     u_int *start, u_int *end)
4058 {
4059 	struct grid	*gd = data->backing->grid;
4060 	u_int		 last = (gd->sy * gd->sx) - 1;
4061 	u_char		 mark = data->searchmark[at];
4062 
4063 	*start = *end = at;
4064 	while (*start != 0 && data->searchmark[*start] == mark)
4065 		(*start)--;
4066 	if (data->searchmark[*start] != mark)
4067 		(*start)++;
4068 	while (*end != last && data->searchmark[*end] == mark)
4069 		(*end)++;
4070 	if (data->searchmark[*end] != mark)
4071 		(*end)--;
4072 }
4073 
4074 static char *
4075 window_copy_match_at_cursor(struct window_copy_mode_data *data)
4076 {
4077 	struct grid	*gd = data->backing->grid;
4078 	struct grid_cell gc;
4079 	u_int		 at, start, end, cy, px, py;
4080 	u_int		 sx = screen_size_x(data->backing);
4081 	char		*buf = NULL;
4082 	size_t		 len = 0;
4083 
4084 	if (data->searchmark == NULL)
4085 		return (NULL);
4086 
4087 	cy = screen_hsize(data->backing) - data->oy + data->cy;
4088 	if (window_copy_search_mark_at(data, data->cx, cy, &at) != 0)
4089 		return (NULL);
4090 	if (data->searchmark[at] == 0) {
4091 		/* Allow one position after the match. */
4092 		if (at == 0 || data->searchmark[--at] == 0)
4093 			return (NULL);
4094 	}
4095 	window_copy_match_start_end(data, at, &start, &end);
4096 
4097 	/*
4098 	 * Cells will not be set in the marked array unless they are valid text
4099 	 * and wrapping will be taken care of, so we can just copy.
4100  	 */
4101 	for (at = start; at <= end; at++) {
4102 		py = at / sx;
4103 		px = at - (py * sx);
4104 
4105 		grid_get_cell(gd, px, gd->hsize + py - data->oy, &gc);
4106 		buf = xrealloc(buf, len + gc.data.size + 1);
4107 		memcpy(buf + len, gc.data.data, gc.data.size);
4108 		len += gc.data.size;
4109 	}
4110 	if (len != 0)
4111 		buf[len] = '\0';
4112 	return (buf);
4113 }
4114 
4115 static void
4116 window_copy_update_style(struct window_mode_entry *wme, u_int fx, u_int fy,
4117     struct grid_cell *gc, const struct grid_cell *mgc,
4118     const struct grid_cell *cgc, const struct grid_cell *mkgc)
4119 {
4120 	struct window_pane		*wp = wme->wp;
4121 	struct window_copy_mode_data	*data = wme->data;
4122 	u_int				 mark, start, end, cy, cursor, current;
4123 	int				 inv = 0, found = 0;
4124 	int				 keys;
4125 
4126 	if (data->showmark && fy == data->my) {
4127 		gc->attr = mkgc->attr;
4128 		if (fx == data->mx)
4129 			inv = 1;
4130 		if (inv) {
4131 			gc->fg = mkgc->bg;
4132 			gc->bg = mkgc->fg;
4133 		}
4134 		else {
4135 			gc->fg = mkgc->fg;
4136 			gc->bg = mkgc->bg;
4137 		}
4138 	}
4139 
4140 	if (data->searchmark == NULL)
4141 		return;
4142 
4143 	if (window_copy_search_mark_at(data, fx, fy, &current) != 0)
4144 		return;
4145 	mark = data->searchmark[current];
4146 	if (mark == 0)
4147 		return;
4148 
4149 	cy = screen_hsize(data->backing) - data->oy + data->cy;
4150 	if (window_copy_search_mark_at(data, data->cx, cy, &cursor) == 0) {
4151 		keys = options_get_number(wp->window->options, "mode-keys");
4152 		if (cursor != 0 &&
4153 		    keys == MODEKEY_EMACS &&
4154 		    data->searchdirection) {
4155 			if (data->searchmark[cursor - 1] == mark) {
4156 				cursor--;
4157 				found = 1;
4158 			}
4159 		} else if (data->searchmark[cursor] == mark)
4160 			found = 1;
4161 		if (found) {
4162 			window_copy_match_start_end(data, cursor, &start, &end);
4163 			if (current >= start && current <= end) {
4164 				gc->attr = cgc->attr;
4165 				if (inv) {
4166 					gc->fg = cgc->bg;
4167 					gc->bg = cgc->fg;
4168 				}
4169 				else {
4170 					gc->fg = cgc->fg;
4171 					gc->bg = cgc->bg;
4172 				}
4173 				return;
4174 			}
4175 		}
4176 	}
4177 
4178 	gc->attr = mgc->attr;
4179 	if (inv) {
4180 		gc->fg = mgc->bg;
4181 		gc->bg = mgc->fg;
4182 	}
4183 	else {
4184 		gc->fg = mgc->fg;
4185 		gc->bg = mgc->bg;
4186 	}
4187 }
4188 
4189 static void
4190 window_copy_write_one(struct window_mode_entry *wme,
4191     struct screen_write_ctx *ctx, u_int py, u_int fy, u_int nx,
4192     const struct grid_cell *mgc, const struct grid_cell *cgc,
4193     const struct grid_cell *mkgc)
4194 {
4195 	struct window_copy_mode_data	*data = wme->data;
4196 	struct grid			*gd = data->backing->grid;
4197 	struct grid_cell		 gc;
4198 	u_int		 		 fx;
4199 
4200 	screen_write_cursormove(ctx, 0, py, 0);
4201 	for (fx = 0; fx < nx; fx++) {
4202 		grid_get_cell(gd, fx, fy, &gc);
4203 		if (fx + gc.data.width <= nx) {
4204 			window_copy_update_style(wme, fx, fy, &gc, mgc, cgc,
4205 			    mkgc);
4206 			screen_write_cell(ctx, &gc);
4207 		}
4208 	}
4209 }
4210 
4211 static void
4212 window_copy_write_line(struct window_mode_entry *wme,
4213     struct screen_write_ctx *ctx, u_int py)
4214 {
4215 	struct window_pane		*wp = wme->wp;
4216 	struct window_copy_mode_data	*data = wme->data;
4217 	struct screen			*s = &data->screen;
4218 	struct options			*oo = wp->window->options;
4219 	struct grid_line		*gl;
4220 	struct grid_cell		 gc, mgc, cgc, mkgc;
4221 	char				 hdr[512], tmp[256], *t;
4222 	size_t				 size = 0;
4223 	u_int				 hsize = screen_hsize(data->backing);
4224 
4225 	style_apply(&gc, oo, "mode-style", NULL);
4226 	gc.flags |= GRID_FLAG_NOPALETTE;
4227 	style_apply(&mgc, oo, "copy-mode-match-style", NULL);
4228 	mgc.flags |= GRID_FLAG_NOPALETTE;
4229 	style_apply(&cgc, oo, "copy-mode-current-match-style", NULL);
4230 	cgc.flags |= GRID_FLAG_NOPALETTE;
4231 	style_apply(&mkgc, oo, "copy-mode-mark-style", NULL);
4232 	mkgc.flags |= GRID_FLAG_NOPALETTE;
4233 
4234 	if (py == 0 && s->rupper < s->rlower && !data->hide_position) {
4235 		gl = grid_get_line(data->backing->grid, hsize - data->oy);
4236 		if (gl->time == 0)
4237 			xsnprintf(tmp, sizeof tmp, "[%u/%u]", data->oy, hsize);
4238 		else {
4239 			t = format_pretty_time(gl->time, 1);
4240 			xsnprintf(tmp, sizeof tmp, "%s [%u/%u]", t, data->oy,
4241 			    hsize);
4242 			free(t);
4243 		}
4244 
4245 		if (data->searchmark == NULL) {
4246 			if (data->timeout) {
4247 				size = xsnprintf(hdr, sizeof hdr,
4248 				    "(timed out) %s", tmp);
4249 			} else
4250 				size = xsnprintf(hdr, sizeof hdr, "%s", tmp);
4251 		} else {
4252 			if (data->searchcount == -1)
4253 				size = xsnprintf(hdr, sizeof hdr, "%s", tmp);
4254 			else {
4255 				size = xsnprintf(hdr, sizeof hdr,
4256 				    "(%d%s results) %s", data->searchcount,
4257 				    data->searchmore ? "+" : "", tmp);
4258 			}
4259 		}
4260 		if (size > screen_size_x(s))
4261 			size = screen_size_x(s);
4262 		screen_write_cursormove(ctx, screen_size_x(s) - size, 0, 0);
4263 		screen_write_puts(ctx, &gc, "%s", hdr);
4264 	} else
4265 		size = 0;
4266 
4267 	if (size < screen_size_x(s)) {
4268 		window_copy_write_one(wme, ctx, py, hsize - data->oy + py,
4269 		    screen_size_x(s) - size, &mgc, &cgc, &mkgc);
4270 	}
4271 
4272 	if (py == data->cy && data->cx == screen_size_x(s)) {
4273 		screen_write_cursormove(ctx, screen_size_x(s) - 1, py, 0);
4274 		screen_write_putc(ctx, &grid_default_cell, '$');
4275 	}
4276 }
4277 
4278 static void
4279 window_copy_write_lines(struct window_mode_entry *wme,
4280     struct screen_write_ctx *ctx, u_int py, u_int ny)
4281 {
4282 	u_int	yy;
4283 
4284 	for (yy = py; yy < py + ny; yy++)
4285 		window_copy_write_line(wme, ctx, py);
4286 }
4287 
4288 static void
4289 window_copy_redraw_selection(struct window_mode_entry *wme, u_int old_y)
4290 {
4291 	struct window_copy_mode_data	*data = wme->data;
4292 	struct grid			*gd = data->backing->grid;
4293 	u_int				 new_y, start, end;
4294 
4295 	new_y = data->cy;
4296 	if (old_y <= new_y) {
4297 		start = old_y;
4298 		end = new_y;
4299 	} else {
4300 		start = new_y;
4301 		end = old_y;
4302 	}
4303 
4304 	/*
4305 	 * In word selection mode the first word on the line below the cursor
4306 	 * might be selected, so add this line to the redraw area.
4307 	 */
4308 	if (data->selflag == SEL_WORD) {
4309 		/* Last grid line in data coordinates. */
4310 		if (end < gd->sy + data->oy - 1)
4311 			end++;
4312 	}
4313 	window_copy_redraw_lines(wme, start, end - start + 1);
4314 }
4315 
4316 static void
4317 window_copy_redraw_lines(struct window_mode_entry *wme, u_int py, u_int ny)
4318 {
4319 	struct window_pane		*wp = wme->wp;
4320 	struct window_copy_mode_data	*data = wme->data;
4321 	struct screen_write_ctx	 	 ctx;
4322 	u_int				 i;
4323 
4324 	screen_write_start_pane(&ctx, wp, NULL);
4325 	for (i = py; i < py + ny; i++)
4326 		window_copy_write_line(wme, &ctx, i);
4327 	screen_write_cursormove(&ctx, data->cx, data->cy, 0);
4328 	screen_write_stop(&ctx);
4329 }
4330 
4331 static void
4332 window_copy_redraw_screen(struct window_mode_entry *wme)
4333 {
4334 	struct window_copy_mode_data	*data = wme->data;
4335 
4336 	window_copy_redraw_lines(wme, 0, screen_size_y(&data->screen));
4337 }
4338 
4339 static void
4340 window_copy_synchronize_cursor_end(struct window_mode_entry *wme, int begin,
4341     int no_reset)
4342 {
4343 	struct window_copy_mode_data	*data = wme->data;
4344 	u_int				 xx, yy;
4345 
4346 	xx = data->cx;
4347 	yy = screen_hsize(data->backing) + data->cy - data->oy;
4348 	switch (data->selflag) {
4349 	case SEL_WORD:
4350 		if (no_reset)
4351 			break;
4352 		begin = 0;
4353 		if (data->dy > yy || (data->dy == yy && data->dx > xx)) {
4354 			/* Right to left selection. */
4355 			window_copy_cursor_previous_word_pos(wme,
4356 			    data->separators, &xx, &yy);
4357 			begin = 1;
4358 
4359 			/* Reset the end. */
4360 			data->endselx = data->endselrx;
4361 			data->endsely = data->endselry;
4362 		} else {
4363 			/* Left to right selection. */
4364 			if (xx >= window_copy_find_length(wme, yy) ||
4365 			    !window_copy_in_set(wme, xx + 1, yy, WHITESPACE)) {
4366 				window_copy_cursor_next_word_end_pos(wme,
4367 				    data->separators, &xx, &yy);
4368 			}
4369 
4370 			/* Reset the start. */
4371 			data->selx = data->selrx;
4372 			data->sely = data->selry;
4373 		}
4374 		break;
4375 	case SEL_LINE:
4376 		if (no_reset)
4377 			break;
4378 		begin = 0;
4379 		if (data->dy > yy) {
4380 			/* Right to left selection. */
4381 			xx = 0;
4382 			begin = 1;
4383 
4384 			/* Reset the end. */
4385 			data->endselx = data->endselrx;
4386 			data->endsely = data->endselry;
4387 		} else {
4388 			/* Left to right selection. */
4389 			if (yy < data->endselry)
4390 				yy = data->endselry;
4391 			xx = window_copy_find_length(wme, yy);
4392 
4393 			/* Reset the start. */
4394 			data->selx = data->selrx;
4395 			data->sely = data->selry;
4396 		}
4397 		break;
4398 	case SEL_CHAR:
4399 		break;
4400 	}
4401 	if (begin) {
4402 		data->selx = xx;
4403 		data->sely = yy;
4404 	} else {
4405 		data->endselx = xx;
4406 		data->endsely = yy;
4407 	}
4408 }
4409 
4410 static void
4411 window_copy_synchronize_cursor(struct window_mode_entry *wme, int no_reset)
4412 {
4413 	struct window_copy_mode_data	*data = wme->data;
4414 
4415 	switch (data->cursordrag) {
4416 	case CURSORDRAG_ENDSEL:
4417 		window_copy_synchronize_cursor_end(wme, 0, no_reset);
4418 		break;
4419 	case CURSORDRAG_SEL:
4420 		window_copy_synchronize_cursor_end(wme, 1, no_reset);
4421 		break;
4422 	case CURSORDRAG_NONE:
4423 		break;
4424 	}
4425 }
4426 
4427 static void
4428 window_copy_update_cursor(struct window_mode_entry *wme, u_int cx, u_int cy)
4429 {
4430 	struct window_pane		*wp = wme->wp;
4431 	struct window_copy_mode_data	*data = wme->data;
4432 	struct screen			*s = &data->screen;
4433 	struct screen_write_ctx		 ctx;
4434 	u_int				 old_cx, old_cy;
4435 
4436 	old_cx = data->cx; old_cy = data->cy;
4437 	data->cx = cx; data->cy = cy;
4438 	if (old_cx == screen_size_x(s))
4439 		window_copy_redraw_lines(wme, old_cy, 1);
4440 	if (data->cx == screen_size_x(s))
4441 		window_copy_redraw_lines(wme, data->cy, 1);
4442 	else {
4443 		screen_write_start_pane(&ctx, wp, NULL);
4444 		screen_write_cursormove(&ctx, data->cx, data->cy, 0);
4445 		screen_write_stop(&ctx);
4446 	}
4447 }
4448 
4449 static void
4450 window_copy_start_selection(struct window_mode_entry *wme)
4451 {
4452 	struct window_copy_mode_data	*data = wme->data;
4453 
4454 	data->selx = data->cx;
4455 	data->sely = screen_hsize(data->backing) + data->cy - data->oy;
4456 
4457 	data->endselx = data->selx;
4458 	data->endsely = data->sely;
4459 
4460 	data->cursordrag = CURSORDRAG_ENDSEL;
4461 
4462 	window_copy_set_selection(wme, 1, 0);
4463 }
4464 
4465 static int
4466 window_copy_adjust_selection(struct window_mode_entry *wme, u_int *selx,
4467     u_int *sely)
4468 {
4469 	struct window_copy_mode_data	*data = wme->data;
4470 	struct screen			*s = &data->screen;
4471 	u_int 				 sx, sy, ty;
4472 	int				 relpos;
4473 
4474 	sx = *selx;
4475 	sy = *sely;
4476 
4477 	ty = screen_hsize(data->backing) - data->oy;
4478 	if (sy < ty) {
4479 		relpos = WINDOW_COPY_REL_POS_ABOVE;
4480 		if (!data->rectflag)
4481 			sx = 0;
4482 		sy = 0;
4483 	} else if (sy > ty + screen_size_y(s) - 1) {
4484 		relpos = WINDOW_COPY_REL_POS_BELOW;
4485 		if (!data->rectflag)
4486 			sx = screen_size_x(s) - 1;
4487 		sy = screen_size_y(s) - 1;
4488 	} else {
4489 		relpos = WINDOW_COPY_REL_POS_ON_SCREEN;
4490 		sy -= ty;
4491 	}
4492 
4493 	*selx = sx;
4494 	*sely = sy;
4495 	return (relpos);
4496 }
4497 
4498 static int
4499 window_copy_update_selection(struct window_mode_entry *wme, int may_redraw,
4500     int no_reset)
4501 {
4502 	struct window_copy_mode_data	*data = wme->data;
4503 	struct screen			*s = &data->screen;
4504 
4505 	if (s->sel == NULL && data->lineflag == LINE_SEL_NONE)
4506 		return (0);
4507 	return (window_copy_set_selection(wme, may_redraw, no_reset));
4508 }
4509 
4510 static int
4511 window_copy_set_selection(struct window_mode_entry *wme, int may_redraw,
4512     int no_reset)
4513 {
4514 	struct window_pane		*wp = wme->wp;
4515 	struct window_copy_mode_data	*data = wme->data;
4516 	struct screen			*s = &data->screen;
4517 	struct options			*oo = wp->window->options;
4518 	struct grid_cell		 gc;
4519 	u_int				 sx, sy, cy, endsx, endsy;
4520 	int				 startrelpos, endrelpos;
4521 
4522 	window_copy_synchronize_cursor(wme, no_reset);
4523 
4524 	/* Adjust the selection. */
4525 	sx = data->selx;
4526 	sy = data->sely;
4527 	startrelpos = window_copy_adjust_selection(wme, &sx, &sy);
4528 
4529 	/* Adjust the end of selection. */
4530 	endsx = data->endselx;
4531 	endsy = data->endsely;
4532 	endrelpos = window_copy_adjust_selection(wme, &endsx, &endsy);
4533 
4534 	/* Selection is outside of the current screen */
4535 	if (startrelpos == endrelpos &&
4536 	    startrelpos != WINDOW_COPY_REL_POS_ON_SCREEN) {
4537 		screen_hide_selection(s);
4538 		return (0);
4539 	}
4540 
4541 	/* Set colours and selection. */
4542 	style_apply(&gc, oo, "mode-style", NULL);
4543 	gc.flags |= GRID_FLAG_NOPALETTE;
4544 	screen_set_selection(s, sx, sy, endsx, endsy, data->rectflag,
4545 	    data->modekeys, &gc);
4546 
4547 	if (data->rectflag && may_redraw) {
4548 		/*
4549 		 * Can't rely on the caller to redraw the right lines for
4550 		 * rectangle selection - find the highest line and the number
4551 		 * of lines, and redraw just past that in both directions
4552 		 */
4553 		cy = data->cy;
4554 		if (data->cursordrag == CURSORDRAG_ENDSEL) {
4555 			if (sy < cy)
4556 				window_copy_redraw_lines(wme, sy, cy - sy + 1);
4557 			else
4558 				window_copy_redraw_lines(wme, cy, sy - cy + 1);
4559 		} else {
4560 			if (endsy < cy) {
4561 				window_copy_redraw_lines(wme, endsy,
4562 				    cy - endsy + 1);
4563 			} else {
4564 				window_copy_redraw_lines(wme, cy,
4565 				    endsy - cy + 1);
4566 			}
4567 		}
4568 	}
4569 
4570 	return (1);
4571 }
4572 
4573 static void *
4574 window_copy_get_selection(struct window_mode_entry *wme, size_t *len)
4575 {
4576 	struct window_pane		*wp = wme->wp;
4577 	struct window_copy_mode_data	*data = wme->data;
4578 	struct screen			*s = &data->screen;
4579 	char				*buf;
4580 	size_t				 off;
4581 	u_int				 i, xx, yy, sx, sy, ex, ey, ey_last;
4582 	u_int				 firstsx, lastex, restex, restsx, selx;
4583 	int				 keys;
4584 
4585 	if (data->screen.sel == NULL && data->lineflag == LINE_SEL_NONE) {
4586 		buf = window_copy_match_at_cursor(data);
4587 		if (buf != NULL)
4588 			*len = strlen(buf);
4589 		else
4590 			*len = 0;
4591 		return (buf);
4592 	}
4593 
4594 	buf = xmalloc(1);
4595 	off = 0;
4596 
4597 	*buf = '\0';
4598 
4599 	/*
4600 	 * The selection extends from selx,sely to (adjusted) cx,cy on
4601 	 * the base screen.
4602 	 */
4603 
4604 	/* Find start and end. */
4605 	xx = data->endselx;
4606 	yy = data->endsely;
4607 	if (yy < data->sely || (yy == data->sely && xx < data->selx)) {
4608 		sx = xx; sy = yy;
4609 		ex = data->selx; ey = data->sely;
4610 	} else {
4611 		sx = data->selx; sy = data->sely;
4612 		ex = xx; ey = yy;
4613 	}
4614 
4615 	/* Trim ex to end of line. */
4616 	ey_last = window_copy_find_length(wme, ey);
4617 	if (ex > ey_last)
4618 		ex = ey_last;
4619 
4620 	/*
4621 	 * Deal with rectangle-copy if necessary; four situations: start of
4622 	 * first line (firstsx), end of last line (lastex), start (restsx) and
4623 	 * end (restex) of all other lines.
4624 	 */
4625 	xx = screen_size_x(s);
4626 
4627 	/*
4628 	 * Behave according to mode-keys. If it is emacs, copy like emacs,
4629 	 * keeping the top-left-most character, and dropping the
4630 	 * bottom-right-most, regardless of copy direction. If it is vi, also
4631 	 * keep bottom-right-most character.
4632 	 */
4633 	keys = options_get_number(wp->window->options, "mode-keys");
4634 	if (data->rectflag) {
4635 		/*
4636 		 * Need to ignore the column with the cursor in it, which for
4637 		 * rectangular copy means knowing which side the cursor is on.
4638 		 */
4639 		if (data->cursordrag == CURSORDRAG_ENDSEL)
4640 			selx = data->selx;
4641 		else
4642 			selx = data->endselx;
4643 		if (selx < data->cx) {
4644 			/* Selection start is on the left. */
4645 			if (keys == MODEKEY_EMACS) {
4646 				lastex = data->cx;
4647 				restex = data->cx;
4648 			}
4649 			else {
4650 				lastex = data->cx + 1;
4651 				restex = data->cx + 1;
4652 			}
4653 			firstsx = selx;
4654 			restsx = selx;
4655 		} else {
4656 			/* Cursor is on the left. */
4657 			lastex = selx + 1;
4658 			restex = selx + 1;
4659 			firstsx = data->cx;
4660 			restsx = data->cx;
4661 		}
4662 	} else {
4663 		if (keys == MODEKEY_EMACS)
4664 			lastex = ex;
4665 		else
4666 			lastex = ex + 1;
4667 		restex = xx;
4668 		firstsx = sx;
4669 		restsx = 0;
4670 	}
4671 
4672 	/* Copy the lines. */
4673 	for (i = sy; i <= ey; i++) {
4674 		window_copy_copy_line(wme, &buf, &off, i,
4675 		    (i == sy ? firstsx : restsx),
4676 		    (i == ey ? lastex : restex));
4677 	}
4678 
4679 	/* Don't bother if no data. */
4680 	if (off == 0) {
4681 		free(buf);
4682 		*len = 0;
4683 		return (NULL);
4684 	}
4685 	 /* Remove final \n (unless at end in vi mode). */
4686 	if (keys == MODEKEY_EMACS || lastex <= ey_last) {
4687 		if (~grid_get_line(data->backing->grid, ey)->flags &
4688 		    GRID_LINE_WRAPPED || lastex != ey_last)
4689 		off -= 1;
4690 	}
4691 	*len = off;
4692 	return (buf);
4693 }
4694 
4695 static void
4696 window_copy_copy_buffer(struct window_mode_entry *wme, const char *prefix,
4697     void *buf, size_t len)
4698 {
4699 	struct window_pane	*wp = wme->wp;
4700 	struct screen_write_ctx	 ctx;
4701 
4702 	if (options_get_number(global_options, "set-clipboard") != 0) {
4703 		screen_write_start_pane(&ctx, wp, NULL);
4704 		screen_write_setselection(&ctx, "", buf, len);
4705 		screen_write_stop(&ctx);
4706 		notify_pane("pane-set-clipboard", wp);
4707 	}
4708 
4709 	paste_add(prefix, buf, len);
4710 }
4711 
4712 static void *
4713 window_copy_pipe_run(struct window_mode_entry *wme, struct session *s,
4714     const char *cmd, size_t *len)
4715 {
4716 	void		*buf;
4717 	struct job	*job;
4718 
4719 	buf = window_copy_get_selection(wme, len);
4720 	if (cmd == NULL || *cmd == '\0')
4721 		cmd = options_get_string(global_options, "copy-command");
4722 	if (cmd != NULL && *cmd != '\0') {
4723 		job = job_run(cmd, 0, NULL, NULL, s, NULL, NULL, NULL, NULL,
4724 		    NULL, JOB_NOWAIT, -1, -1);
4725 		bufferevent_write(job_get_event(job), buf, *len);
4726 	}
4727 	return (buf);
4728 }
4729 
4730 static void
4731 window_copy_pipe(struct window_mode_entry *wme, struct session *s,
4732     const char *cmd)
4733 {
4734 	size_t	len;
4735 
4736 	window_copy_pipe_run(wme, s, cmd, &len);
4737 }
4738 
4739 static void
4740 window_copy_copy_pipe(struct window_mode_entry *wme, struct session *s,
4741     const char *prefix, const char *cmd)
4742 {
4743 	void	*buf;
4744 	size_t	 len;
4745 
4746 	buf = window_copy_pipe_run(wme, s, cmd, &len);
4747 	if (buf != NULL)
4748 		window_copy_copy_buffer(wme, prefix, buf, len);
4749 }
4750 
4751 static void
4752 window_copy_copy_selection(struct window_mode_entry *wme, const char *prefix)
4753 {
4754 	char	*buf;
4755 	size_t	 len;
4756 
4757 	buf = window_copy_get_selection(wme, &len);
4758 	if (buf != NULL)
4759 		window_copy_copy_buffer(wme, prefix, buf, len);
4760 }
4761 
4762 static void
4763 window_copy_append_selection(struct window_mode_entry *wme)
4764 {
4765 	struct window_pane		*wp = wme->wp;
4766 	char				*buf;
4767 	struct paste_buffer		*pb;
4768 	const char			*bufdata, *bufname = NULL;
4769 	size_t				 len, bufsize;
4770 	struct screen_write_ctx		 ctx;
4771 
4772 	buf = window_copy_get_selection(wme, &len);
4773 	if (buf == NULL)
4774 		return;
4775 
4776 	if (options_get_number(global_options, "set-clipboard") != 0) {
4777 		screen_write_start_pane(&ctx, wp, NULL);
4778 		screen_write_setselection(&ctx, "", buf, len);
4779 		screen_write_stop(&ctx);
4780 		notify_pane("pane-set-clipboard", wp);
4781 	}
4782 
4783 	pb = paste_get_top(&bufname);
4784 	if (pb != NULL) {
4785 		bufdata = paste_buffer_data(pb, &bufsize);
4786 		buf = xrealloc(buf, len + bufsize);
4787 		memmove(buf + bufsize, buf, len);
4788 		memcpy(buf, bufdata, bufsize);
4789 		len += bufsize;
4790 	}
4791 	if (paste_set(buf, len, bufname, NULL) != 0)
4792 		free(buf);
4793 }
4794 
4795 static void
4796 window_copy_copy_line(struct window_mode_entry *wme, char **buf, size_t *off,
4797     u_int sy, u_int sx, u_int ex)
4798 {
4799 	struct window_copy_mode_data	*data = wme->data;
4800 	struct grid			*gd = data->backing->grid;
4801 	struct grid_cell		 gc;
4802 	struct grid_line		*gl;
4803 	struct utf8_data		 ud;
4804 	u_int				 i, xx, wrapped = 0;
4805 	const char			*s;
4806 
4807 	if (sx > ex)
4808 		return;
4809 
4810 	/*
4811 	 * Work out if the line was wrapped at the screen edge and all of it is
4812 	 * on screen.
4813 	 */
4814 	gl = grid_get_line(gd, sy);
4815 	if (gl->flags & GRID_LINE_WRAPPED && gl->cellsize <= gd->sx)
4816 		wrapped = 1;
4817 
4818 	/* If the line was wrapped, don't strip spaces (use the full length). */
4819 	if (wrapped)
4820 		xx = gl->cellsize;
4821 	else
4822 		xx = window_copy_find_length(wme, sy);
4823 	if (ex > xx)
4824 		ex = xx;
4825 	if (sx > xx)
4826 		sx = xx;
4827 
4828 	if (sx < ex) {
4829 		for (i = sx; i < ex; i++) {
4830 			grid_get_cell(gd, i, sy, &gc);
4831 			if (gc.flags & GRID_FLAG_PADDING)
4832 				continue;
4833 			utf8_copy(&ud, &gc.data);
4834 			if (ud.size == 1 && (gc.attr & GRID_ATTR_CHARSET)) {
4835 				s = tty_acs_get(NULL, ud.data[0]);
4836 				if (s != NULL && strlen(s) <= sizeof ud.data) {
4837 					ud.size = strlen(s);
4838 					memcpy(ud.data, s, ud.size);
4839 				}
4840 			}
4841 
4842 			*buf = xrealloc(*buf, (*off) + ud.size);
4843 			memcpy(*buf + *off, ud.data, ud.size);
4844 			*off += ud.size;
4845 		}
4846 	}
4847 
4848 	/* Only add a newline if the line wasn't wrapped. */
4849 	if (!wrapped || ex != xx) {
4850 		*buf = xrealloc(*buf, (*off) + 1);
4851 		(*buf)[(*off)++] = '\n';
4852 	}
4853 }
4854 
4855 static void
4856 window_copy_clear_selection(struct window_mode_entry *wme)
4857 {
4858 	struct window_copy_mode_data   *data = wme->data;
4859 	u_int				px, py;
4860 
4861 	screen_clear_selection(&data->screen);
4862 
4863 	data->cursordrag = CURSORDRAG_NONE;
4864 	data->lineflag = LINE_SEL_NONE;
4865 	data->selflag = SEL_CHAR;
4866 
4867 	py = screen_hsize(data->backing) + data->cy - data->oy;
4868 	px = window_copy_find_length(wme, py);
4869 	if (data->cx > px)
4870 		window_copy_update_cursor(wme, px, data->cy);
4871 }
4872 
4873 static int
4874 window_copy_in_set(struct window_mode_entry *wme, u_int px, u_int py,
4875     const char *set)
4876 {
4877 	struct window_copy_mode_data	*data = wme->data;
4878 	struct grid_cell		 gc;
4879 
4880 	grid_get_cell(data->backing->grid, px, py, &gc);
4881 	if (gc.flags & GRID_FLAG_PADDING)
4882 		return (0);
4883 	return (utf8_cstrhas(set, &gc.data));
4884 }
4885 
4886 static u_int
4887 window_copy_find_length(struct window_mode_entry *wme, u_int py)
4888 {
4889 	struct window_copy_mode_data	*data = wme->data;
4890 
4891 	return (grid_line_length(data->backing->grid, py));
4892 }
4893 
4894 static void
4895 window_copy_cursor_start_of_line(struct window_mode_entry *wme)
4896 {
4897 	struct window_copy_mode_data	*data = wme->data;
4898 	struct screen			*back_s = data->backing;
4899 	struct grid_reader		 gr;
4900 	u_int				 px, py, oldy, hsize;
4901 
4902 	px = data->cx;
4903 	hsize = screen_hsize(back_s);
4904 	py = hsize + data->cy - data->oy;
4905 	oldy = data->cy;
4906 
4907 	grid_reader_start(&gr, back_s->grid, px, py);
4908 	grid_reader_cursor_start_of_line(&gr, 1);
4909 	grid_reader_get_cursor(&gr, &px, &py);
4910 	window_copy_acquire_cursor_up(wme, hsize, data->oy, oldy, px, py);
4911 }
4912 
4913 static void
4914 window_copy_cursor_back_to_indentation(struct window_mode_entry *wme)
4915 {
4916 	struct window_copy_mode_data	*data = wme->data;
4917 	struct screen			*back_s = data->backing;
4918 	struct grid_reader		 gr;
4919 	u_int				 px, py, oldy, hsize;
4920 
4921 	px = data->cx;
4922 	hsize = screen_hsize(back_s);
4923 	py = hsize + data->cy - data->oy;
4924 	oldy = data->cy;
4925 
4926 	grid_reader_start(&gr, back_s->grid, px, py);
4927 	grid_reader_cursor_back_to_indentation(&gr);
4928 	grid_reader_get_cursor(&gr, &px, &py);
4929 	window_copy_acquire_cursor_up(wme, hsize, data->oy, oldy, px, py);
4930 }
4931 
4932 static void
4933 window_copy_cursor_end_of_line(struct window_mode_entry *wme)
4934 {
4935 	struct window_copy_mode_data	*data = wme->data;
4936 	struct screen			*back_s = data->backing;
4937 	struct grid_reader		 gr;
4938 	u_int				 px, py, oldy, hsize;
4939 
4940 	px = data->cx;
4941 	hsize = screen_hsize(back_s);
4942 	py =  hsize + data->cy - data->oy;
4943 	oldy = data->cy;
4944 
4945 	grid_reader_start(&gr, back_s->grid, px, py);
4946 	if (data->screen.sel != NULL && data->rectflag)
4947 		grid_reader_cursor_end_of_line(&gr, 1, 1);
4948 	else
4949 		grid_reader_cursor_end_of_line(&gr, 1, 0);
4950 	grid_reader_get_cursor(&gr, &px, &py);
4951 	window_copy_acquire_cursor_down(wme, hsize, screen_size_y(back_s),
4952 	    data->oy, oldy, px, py, 0);
4953 }
4954 
4955 static void
4956 window_copy_other_end(struct window_mode_entry *wme)
4957 {
4958 	struct window_copy_mode_data	*data = wme->data;
4959 	struct screen			*s = &data->screen;
4960 	u_int				 selx, sely, cy, yy, hsize;
4961 
4962 	if (s->sel == NULL && data->lineflag == LINE_SEL_NONE)
4963 		return;
4964 
4965 	if (data->lineflag == LINE_SEL_LEFT_RIGHT)
4966 		data->lineflag = LINE_SEL_RIGHT_LEFT;
4967 	else if (data->lineflag == LINE_SEL_RIGHT_LEFT)
4968 		data->lineflag = LINE_SEL_LEFT_RIGHT;
4969 
4970 	switch (data->cursordrag) {
4971 		case CURSORDRAG_NONE:
4972 		case CURSORDRAG_SEL:
4973 			data->cursordrag = CURSORDRAG_ENDSEL;
4974 			break;
4975 		case CURSORDRAG_ENDSEL:
4976 			data->cursordrag = CURSORDRAG_SEL;
4977 			break;
4978 	}
4979 
4980 	selx = data->endselx;
4981 	sely = data->endsely;
4982 	if (data->cursordrag == CURSORDRAG_SEL) {
4983 		selx = data->selx;
4984 		sely = data->sely;
4985 	}
4986 
4987 	cy = data->cy;
4988 	yy = screen_hsize(data->backing) + data->cy - data->oy;
4989 
4990 	data->cx = selx;
4991 
4992 	hsize = screen_hsize(data->backing);
4993 	if (sely < hsize - data->oy) { /* above */
4994 		data->oy = hsize - sely;
4995 		data->cy = 0;
4996 	} else if (sely > hsize - data->oy + screen_size_y(s)) { /* below */
4997 		data->oy = hsize - sely + screen_size_y(s) - 1;
4998 		data->cy = screen_size_y(s) - 1;
4999 	} else
5000 		data->cy = cy + sely - yy;
5001 
5002 	window_copy_update_selection(wme, 1, 1);
5003 	window_copy_redraw_screen(wme);
5004 }
5005 
5006 static void
5007 window_copy_cursor_left(struct window_mode_entry *wme)
5008 {
5009 	struct window_copy_mode_data	*data = wme->data;
5010 	struct screen			*back_s = data->backing;
5011 	struct grid_reader		 gr;
5012 	u_int				 px, py, oldy, hsize;
5013 
5014 	px = data->cx;
5015 	hsize = screen_hsize(back_s);
5016 	py = hsize + data->cy - data->oy;
5017 	oldy = data->cy;
5018 
5019 	grid_reader_start(&gr, back_s->grid, px, py);
5020 	grid_reader_cursor_left(&gr, 1);
5021 	grid_reader_get_cursor(&gr, &px, &py);
5022 	window_copy_acquire_cursor_up(wme, hsize, data->oy, oldy, px, py);
5023 }
5024 
5025 static void
5026 window_copy_cursor_right(struct window_mode_entry *wme, int all)
5027 {
5028 	struct window_copy_mode_data	*data = wme->data;
5029 	struct screen			*back_s = data->backing;
5030 	struct grid_reader		 gr;
5031 	u_int				 px, py, oldy, hsize;
5032 
5033 	px = data->cx;
5034 	hsize = screen_hsize(back_s);
5035 	py = hsize + data->cy - data->oy;
5036 	oldy = data->cy;
5037 
5038 	grid_reader_start(&gr, back_s->grid, px, py);
5039 	grid_reader_cursor_right(&gr, 1, all);
5040 	grid_reader_get_cursor(&gr, &px, &py);
5041 	window_copy_acquire_cursor_down(wme, hsize, screen_size_y(back_s),
5042 	    data->oy, oldy, px, py, 0);
5043 }
5044 
5045 static void
5046 window_copy_cursor_up(struct window_mode_entry *wme, int scroll_only)
5047 {
5048 	struct window_copy_mode_data	*data = wme->data;
5049 	struct screen			*s = &data->screen;
5050 	u_int				 ox, oy, px, py;
5051 	int				 norectsel;
5052 
5053 	norectsel = data->screen.sel == NULL || !data->rectflag;
5054 	oy = screen_hsize(data->backing) + data->cy - data->oy;
5055 	ox = window_copy_find_length(wme, oy);
5056 	if (norectsel && data->cx != ox) {
5057 		data->lastcx = data->cx;
5058 		data->lastsx = ox;
5059 	}
5060 
5061 	if (data->lineflag == LINE_SEL_LEFT_RIGHT && oy == data->sely)
5062 		window_copy_other_end(wme);
5063 
5064 	if (scroll_only || data->cy == 0) {
5065 		if (norectsel)
5066 			data->cx = data->lastcx;
5067 		window_copy_scroll_down(wme, 1);
5068 		if (scroll_only) {
5069 			if (data->cy == screen_size_y(s) - 1)
5070 				window_copy_redraw_lines(wme, data->cy, 1);
5071 			else
5072 				window_copy_redraw_lines(wme, data->cy, 2);
5073 		}
5074 	} else {
5075 		if (norectsel) {
5076 			window_copy_update_cursor(wme, data->lastcx,
5077 			    data->cy - 1);
5078 		} else
5079 			window_copy_update_cursor(wme, data->cx, data->cy - 1);
5080 		if (window_copy_update_selection(wme, 1, 0)) {
5081 			if (data->cy == screen_size_y(s) - 1)
5082 				window_copy_redraw_lines(wme, data->cy, 1);
5083 			else
5084 				window_copy_redraw_lines(wme, data->cy, 2);
5085 		}
5086 	}
5087 
5088 	if (norectsel) {
5089 		py = screen_hsize(data->backing) + data->cy - data->oy;
5090 		px = window_copy_find_length(wme, py);
5091 		if ((data->cx >= data->lastsx && data->cx != px) ||
5092 		    data->cx > px)
5093 		{
5094 			window_copy_update_cursor(wme, px, data->cy);
5095 			if (window_copy_update_selection(wme, 1, 0))
5096 				window_copy_redraw_lines(wme, data->cy, 1);
5097 		}
5098 	}
5099 
5100 	if (data->lineflag == LINE_SEL_LEFT_RIGHT)
5101 	{
5102 		py = screen_hsize(data->backing) + data->cy - data->oy;
5103 		if (data->rectflag)
5104 			px = screen_size_x(data->backing);
5105 		else
5106 			px = window_copy_find_length(wme, py);
5107 		window_copy_update_cursor(wme, px, data->cy);
5108 		if (window_copy_update_selection(wme, 1, 0))
5109 			window_copy_redraw_lines(wme, data->cy, 1);
5110 	}
5111 	else if (data->lineflag == LINE_SEL_RIGHT_LEFT)
5112 	{
5113 		window_copy_update_cursor(wme, 0, data->cy);
5114 		if (window_copy_update_selection(wme, 1, 0))
5115 			window_copy_redraw_lines(wme, data->cy, 1);
5116 	}
5117 }
5118 
5119 static void
5120 window_copy_cursor_down(struct window_mode_entry *wme, int scroll_only)
5121 {
5122 	struct window_copy_mode_data	*data = wme->data;
5123 	struct screen			*s = &data->screen;
5124 	u_int				 ox, oy, px, py;
5125 	int				 norectsel;
5126 
5127 	norectsel = data->screen.sel == NULL || !data->rectflag;
5128 	oy = screen_hsize(data->backing) + data->cy - data->oy;
5129 	ox = window_copy_find_length(wme, oy);
5130 	if (norectsel && data->cx != ox) {
5131 		data->lastcx = data->cx;
5132 		data->lastsx = ox;
5133 	}
5134 
5135 	if (data->lineflag == LINE_SEL_RIGHT_LEFT && oy == data->endsely)
5136 		window_copy_other_end(wme);
5137 
5138 	if (scroll_only || data->cy == screen_size_y(s) - 1) {
5139 		if (norectsel)
5140 			data->cx = data->lastcx;
5141 		window_copy_scroll_up(wme, 1);
5142 		if (scroll_only && data->cy > 0)
5143 			window_copy_redraw_lines(wme, data->cy - 1, 2);
5144 	} else {
5145 		if (norectsel) {
5146 			window_copy_update_cursor(wme, data->lastcx,
5147 			    data->cy + 1);
5148 		} else
5149 			window_copy_update_cursor(wme, data->cx, data->cy + 1);
5150 		if (window_copy_update_selection(wme, 1, 0))
5151 			window_copy_redraw_lines(wme, data->cy - 1, 2);
5152 	}
5153 
5154 	if (norectsel) {
5155 		py = screen_hsize(data->backing) + data->cy - data->oy;
5156 		px = window_copy_find_length(wme, py);
5157 		if ((data->cx >= data->lastsx && data->cx != px) ||
5158 		    data->cx > px)
5159 		{
5160 			window_copy_update_cursor(wme, px, data->cy);
5161 			if (window_copy_update_selection(wme, 1, 0))
5162 				window_copy_redraw_lines(wme, data->cy, 1);
5163 		}
5164 	}
5165 
5166 	if (data->lineflag == LINE_SEL_LEFT_RIGHT)
5167 	{
5168 		py = screen_hsize(data->backing) + data->cy - data->oy;
5169 		if (data->rectflag)
5170 			px = screen_size_x(data->backing);
5171 		else
5172 			px = window_copy_find_length(wme, py);
5173 		window_copy_update_cursor(wme, px, data->cy);
5174 		if (window_copy_update_selection(wme, 1, 0))
5175 			window_copy_redraw_lines(wme, data->cy, 1);
5176 	}
5177 	else if (data->lineflag == LINE_SEL_RIGHT_LEFT)
5178 	{
5179 		window_copy_update_cursor(wme, 0, data->cy);
5180 		if (window_copy_update_selection(wme, 1, 0))
5181 			window_copy_redraw_lines(wme, data->cy, 1);
5182 	}
5183 }
5184 
5185 static void
5186 window_copy_cursor_jump(struct window_mode_entry *wme)
5187 {
5188 	struct window_copy_mode_data	*data = wme->data;
5189 	struct screen			*back_s = data->backing;
5190 	struct grid_reader		 gr;
5191 	u_int				 px, py, oldy, hsize;
5192 
5193 	px = data->cx + 1;
5194 	hsize = screen_hsize(back_s);
5195 	py = hsize + data->cy - data->oy;
5196 	oldy = data->cy;
5197 
5198 	grid_reader_start(&gr, back_s->grid, px, py);
5199 	if (grid_reader_cursor_jump(&gr, data->jumpchar)) {
5200 		grid_reader_get_cursor(&gr, &px, &py);
5201 		window_copy_acquire_cursor_down(wme, hsize,
5202 		    screen_size_y(back_s), data->oy, oldy, px, py, 0);
5203 	}
5204 }
5205 
5206 static void
5207 window_copy_cursor_jump_back(struct window_mode_entry *wme)
5208 {
5209 	struct window_copy_mode_data	*data = wme->data;
5210 	struct screen			*back_s = data->backing;
5211 	struct grid_reader		 gr;
5212 	u_int				 px, py, oldy, hsize;
5213 
5214 	px = data->cx;
5215 	hsize = screen_hsize(back_s);
5216 	py = hsize + data->cy - data->oy;
5217 	oldy = data->cy;
5218 
5219 	grid_reader_start(&gr, back_s->grid, px, py);
5220 	grid_reader_cursor_left(&gr, 0);
5221 	if (grid_reader_cursor_jump_back(&gr, data->jumpchar)) {
5222 		grid_reader_get_cursor(&gr, &px, &py);
5223 		window_copy_acquire_cursor_up(wme, hsize, data->oy, oldy, px,
5224 		    py);
5225 	}
5226 }
5227 
5228 static void
5229 window_copy_cursor_jump_to(struct window_mode_entry *wme)
5230 {
5231 	struct window_copy_mode_data	*data = wme->data;
5232 	struct screen			*back_s = data->backing;
5233 	struct grid_reader		 gr;
5234 	u_int				 px, py, oldy, hsize;
5235 
5236 	px = data->cx + 2;
5237 	hsize = screen_hsize(back_s);
5238 	py = hsize + data->cy - data->oy;
5239 	oldy = data->cy;
5240 
5241 	grid_reader_start(&gr, back_s->grid, px, py);
5242 	if (grid_reader_cursor_jump(&gr, data->jumpchar)) {
5243 		grid_reader_cursor_left(&gr, 1);
5244 		grid_reader_get_cursor(&gr, &px, &py);
5245 		window_copy_acquire_cursor_down(wme, hsize,
5246 		    screen_size_y(back_s), data->oy, oldy, px, py, 0);
5247 	}
5248 }
5249 
5250 static void
5251 window_copy_cursor_jump_to_back(struct window_mode_entry *wme)
5252 {
5253 	struct window_copy_mode_data	*data = wme->data;
5254 	struct screen			*back_s = data->backing;
5255 	struct grid_reader		 gr;
5256 	u_int				 px, py, oldy, hsize;
5257 
5258 	px = data->cx;
5259 	hsize = screen_hsize(back_s);
5260 	py = hsize + data->cy - data->oy;
5261 	oldy = data->cy;
5262 
5263 	grid_reader_start(&gr, back_s->grid, px, py);
5264 	grid_reader_cursor_left(&gr, 0);
5265 	grid_reader_cursor_left(&gr, 0);
5266 	if (grid_reader_cursor_jump_back(&gr, data->jumpchar)) {
5267 		grid_reader_cursor_right(&gr, 1, 0);
5268 		grid_reader_get_cursor(&gr, &px, &py);
5269 		window_copy_acquire_cursor_up(wme, hsize, data->oy, oldy, px,
5270 		    py);
5271 	}
5272 }
5273 
5274 static void
5275 window_copy_cursor_next_word(struct window_mode_entry *wme,
5276     const char *separators)
5277 {
5278 	struct window_copy_mode_data	*data = wme->data;
5279 	struct screen			*back_s = data->backing;
5280 	struct grid_reader		 gr;
5281 	u_int				 px, py, oldy, hsize;
5282 
5283 	px = data->cx;
5284 	hsize = screen_hsize(back_s);
5285 	py =  hsize + data->cy - data->oy;
5286 	oldy = data->cy;
5287 
5288 	grid_reader_start(&gr, back_s->grid, px, py);
5289 	grid_reader_cursor_next_word(&gr, separators);
5290 	grid_reader_get_cursor(&gr, &px, &py);
5291 	window_copy_acquire_cursor_down(wme, hsize, screen_size_y(back_s),
5292 	    data->oy, oldy, px, py, 0);
5293 }
5294 
5295 /* Compute the next place where a word ends. */
5296 static void
5297 window_copy_cursor_next_word_end_pos(struct window_mode_entry *wme,
5298     const char *separators, u_int *ppx, u_int *ppy)
5299 {
5300 	struct window_pane		*wp = wme->wp;
5301 	struct window_copy_mode_data	*data = wme->data;
5302 	struct options			*oo = wp->window->options;
5303 	struct screen			*back_s = data->backing;
5304 	struct grid_reader		 gr;
5305 	u_int				 px, py, hsize;
5306 
5307 	px = data->cx;
5308 	hsize = screen_hsize(back_s);
5309 	py =  hsize + data->cy - data->oy;
5310 
5311 	grid_reader_start(&gr, back_s->grid, px, py);
5312 	if (options_get_number(oo, "mode-keys") == MODEKEY_VI) {
5313 		if (!grid_reader_in_set(&gr, WHITESPACE))
5314 			grid_reader_cursor_right(&gr, 0, 0);
5315 		grid_reader_cursor_next_word_end(&gr, separators);
5316 		grid_reader_cursor_left(&gr, 1);
5317 	} else
5318 		grid_reader_cursor_next_word_end(&gr, separators);
5319 	grid_reader_get_cursor(&gr, &px, &py);
5320 	*ppx = px;
5321 	*ppy = py;
5322 }
5323 
5324 /* Move to the next place where a word ends. */
5325 static void
5326 window_copy_cursor_next_word_end(struct window_mode_entry *wme,
5327     const char *separators, int no_reset)
5328 {
5329 	struct window_pane		*wp = wme->wp;
5330 	struct window_copy_mode_data	*data = wme->data;
5331 	struct options			*oo = wp->window->options;
5332 	struct screen			*back_s = data->backing;
5333 	struct grid_reader		 gr;
5334 	u_int				 px, py, oldy, hsize;
5335 
5336 	px = data->cx;
5337 	hsize = screen_hsize(back_s);
5338 	py =  hsize + data->cy - data->oy;
5339 	oldy = data->cy;
5340 
5341 	grid_reader_start(&gr, back_s->grid, px, py);
5342 	if (options_get_number(oo, "mode-keys") == MODEKEY_VI) {
5343 		if (!grid_reader_in_set(&gr, WHITESPACE))
5344 			grid_reader_cursor_right(&gr, 0, 0);
5345 		grid_reader_cursor_next_word_end(&gr, separators);
5346 		grid_reader_cursor_left(&gr, 1);
5347 	} else
5348 		grid_reader_cursor_next_word_end(&gr, separators);
5349 	grid_reader_get_cursor(&gr, &px, &py);
5350 	window_copy_acquire_cursor_down(wme, hsize, screen_size_y(back_s),
5351 	    data->oy, oldy, px, py, no_reset);
5352 }
5353 
5354 /* Compute the previous place where a word begins. */
5355 static void
5356 window_copy_cursor_previous_word_pos(struct window_mode_entry *wme,
5357     const char *separators, u_int *ppx, u_int *ppy)
5358 {
5359 	struct window_copy_mode_data	*data = wme->data;
5360 	struct screen			*back_s = data->backing;
5361 	struct grid_reader		 gr;
5362 	u_int				 px, py, hsize;
5363 
5364 	px = data->cx;
5365 	hsize = screen_hsize(back_s);
5366 	py = hsize + data->cy - data->oy;
5367 
5368 	grid_reader_start(&gr, back_s->grid, px, py);
5369 	grid_reader_cursor_previous_word(&gr, separators, /* already= */ 0,
5370         /* stop_at_eol= */ 1);
5371 	grid_reader_get_cursor(&gr, &px, &py);
5372 	*ppx = px;
5373 	*ppy = py;
5374 }
5375 
5376 /* Move to the previous place where a word begins. */
5377 static void
5378 window_copy_cursor_previous_word(struct window_mode_entry *wme,
5379     const char *separators, int already)
5380 {
5381 	struct window_copy_mode_data	*data = wme->data;
5382 	struct window			*w = wme->wp->window;
5383 	struct screen			*back_s = data->backing;
5384 	struct grid_reader		 gr;
5385 	u_int				 px, py, oldy, hsize;
5386 	int				 stop_at_eol;
5387 
5388 	if (options_get_number(w->options, "mode-keys") == MODEKEY_EMACS)
5389 		stop_at_eol = 1;
5390 	else
5391 		stop_at_eol = 0;
5392 
5393 	px = data->cx;
5394 	hsize = screen_hsize(back_s);
5395 	py = hsize + data->cy - data->oy;
5396 	oldy = data->cy;
5397 
5398 	grid_reader_start(&gr, back_s->grid, px, py);
5399 	grid_reader_cursor_previous_word(&gr, separators, already, stop_at_eol);
5400 	grid_reader_get_cursor(&gr, &px, &py);
5401 	window_copy_acquire_cursor_up(wme, hsize, data->oy, oldy, px, py);
5402 }
5403 
5404 static void
5405 window_copy_cursor_prompt(struct window_mode_entry *wme, int direction,
5406     const char *args)
5407 {
5408 	struct window_copy_mode_data	*data = wme->data;
5409 	struct screen			*s = data->backing;
5410 	struct grid			*gd = s->grid;
5411 	u_int				 end_line;
5412 	u_int				 line = gd->hsize - data->oy + data->cy;
5413 	int				 add, line_flag;
5414 
5415 	if (args != NULL && strcmp(args, "-o") == 0)
5416 		line_flag = GRID_LINE_START_OUTPUT;
5417 	else
5418 		line_flag = GRID_LINE_START_PROMPT;
5419 
5420 	if (direction == 0) { /* up */
5421 		add = -1;
5422 		end_line = 0;
5423 	} else { /* down */
5424 		add = 1;
5425 		end_line = gd->hsize + gd->sy - 1;
5426 	}
5427 
5428 	if (line == end_line)
5429 		return;
5430 	for (;;) {
5431 		if (line == end_line)
5432 			return;
5433 		line += add;
5434 
5435 		if (grid_get_line(gd, line)->flags & line_flag)
5436 			break;
5437 	}
5438 
5439 	data->cx = 0;
5440 	if (line > gd->hsize) {
5441 		data->cy = line - gd->hsize;
5442 		data->oy = 0;
5443 	} else {
5444 		data->cy = 0;
5445 		data->oy = gd->hsize - line;
5446 	}
5447 
5448 	window_copy_update_selection(wme, 1, 0);
5449 	window_copy_redraw_screen(wme);
5450 }
5451 
5452 static void
5453 window_copy_scroll_up(struct window_mode_entry *wme, u_int ny)
5454 {
5455 	struct window_pane		*wp = wme->wp;
5456 	struct window_copy_mode_data	*data = wme->data;
5457 	struct screen			*s = &data->screen;
5458 	struct screen_write_ctx		 ctx;
5459 
5460 	if (data->oy < ny)
5461 		ny = data->oy;
5462 	if (ny == 0)
5463 		return;
5464 	data->oy -= ny;
5465 
5466 	if (data->searchmark != NULL && !data->timeout)
5467 		window_copy_search_marks(wme, NULL, data->searchregex, 1);
5468 	window_copy_update_selection(wme, 0, 0);
5469 
5470 	screen_write_start_pane(&ctx, wp, NULL);
5471 	screen_write_cursormove(&ctx, 0, 0, 0);
5472 	screen_write_deleteline(&ctx, ny, 8);
5473 	window_copy_write_lines(wme, &ctx, screen_size_y(s) - ny, ny);
5474 	window_copy_write_line(wme, &ctx, 0);
5475 	if (screen_size_y(s) > 1)
5476 		window_copy_write_line(wme, &ctx, 1);
5477 	if (screen_size_y(s) > 3)
5478 		window_copy_write_line(wme, &ctx, screen_size_y(s) - 2);
5479 	if (s->sel != NULL && screen_size_y(s) > ny)
5480 		window_copy_write_line(wme, &ctx, screen_size_y(s) - ny - 1);
5481 	screen_write_cursormove(&ctx, data->cx, data->cy, 0);
5482 	screen_write_stop(&ctx);
5483 }
5484 
5485 static void
5486 window_copy_scroll_down(struct window_mode_entry *wme, u_int ny)
5487 {
5488 	struct window_pane		*wp = wme->wp;
5489 	struct window_copy_mode_data	*data = wme->data;
5490 	struct screen			*s = &data->screen;
5491 	struct screen_write_ctx		 ctx;
5492 
5493 	if (ny > screen_hsize(data->backing))
5494 		return;
5495 
5496 	if (data->oy > screen_hsize(data->backing) - ny)
5497 		ny = screen_hsize(data->backing) - data->oy;
5498 	if (ny == 0)
5499 		return;
5500 	data->oy += ny;
5501 
5502 	if (data->searchmark != NULL && !data->timeout)
5503 		window_copy_search_marks(wme, NULL, data->searchregex, 1);
5504 	window_copy_update_selection(wme, 0, 0);
5505 
5506 	screen_write_start_pane(&ctx, wp, NULL);
5507 	screen_write_cursormove(&ctx, 0, 0, 0);
5508 	screen_write_insertline(&ctx, ny, 8);
5509 	window_copy_write_lines(wme, &ctx, 0, ny);
5510 	if (s->sel != NULL && screen_size_y(s) > ny)
5511 		window_copy_write_line(wme, &ctx, ny);
5512 	else if (ny == 1) /* nuke position */
5513 		window_copy_write_line(wme, &ctx, 1);
5514 	screen_write_cursormove(&ctx, data->cx, data->cy, 0);
5515 	screen_write_stop(&ctx);
5516 }
5517 
5518 static void
5519 window_copy_rectangle_set(struct window_mode_entry *wme, int rectflag)
5520 {
5521 	struct window_copy_mode_data	*data = wme->data;
5522 	u_int				 px, py;
5523 
5524 	data->rectflag = rectflag;
5525 
5526 	py = screen_hsize(data->backing) + data->cy - data->oy;
5527 	px = window_copy_find_length(wme, py);
5528 	if (data->cx > px)
5529 		window_copy_update_cursor(wme, px, data->cy);
5530 
5531 	window_copy_update_selection(wme, 1, 0);
5532 	window_copy_redraw_screen(wme);
5533 }
5534 
5535 static void
5536 window_copy_move_mouse(struct mouse_event *m)
5537 {
5538 	struct window_pane		*wp;
5539 	struct window_mode_entry	*wme;
5540 	u_int				 x, y;
5541 
5542 	wp = cmd_mouse_pane(m, NULL, NULL);
5543 	if (wp == NULL)
5544 		return;
5545 	wme = TAILQ_FIRST(&wp->modes);
5546 	if (wme == NULL)
5547 		return;
5548 	if (wme->mode != &window_copy_mode && wme->mode != &window_view_mode)
5549 		return;
5550 
5551 	if (cmd_mouse_at(wp, m, &x, &y, 0) != 0)
5552 		return;
5553 
5554 	window_copy_update_cursor(wme, x, y);
5555 }
5556 
5557 void
5558 window_copy_start_drag(struct client *c, struct mouse_event *m)
5559 {
5560 	struct window_pane		*wp;
5561 	struct window_mode_entry	*wme;
5562 	struct window_copy_mode_data	*data;
5563 	u_int				 x, y, yg;
5564 
5565 	if (c == NULL)
5566 		return;
5567 
5568 	wp = cmd_mouse_pane(m, NULL, NULL);
5569 	if (wp == NULL)
5570 		return;
5571 	wme = TAILQ_FIRST(&wp->modes);
5572 	if (wme == NULL)
5573 		return;
5574 	if (wme->mode != &window_copy_mode && wme->mode != &window_view_mode)
5575 		return;
5576 
5577 	if (cmd_mouse_at(wp, m, &x, &y, 1) != 0)
5578 		return;
5579 
5580 	c->tty.mouse_drag_update = window_copy_drag_update;
5581 	c->tty.mouse_drag_release = window_copy_drag_release;
5582 
5583 	data = wme->data;
5584 	yg = screen_hsize(data->backing) + y - data->oy;
5585 	if (x < data->selrx || x > data->endselrx || yg != data->selry)
5586 		data->selflag = SEL_CHAR;
5587 	switch (data->selflag) {
5588 	case SEL_WORD:
5589 		if (data->separators != NULL) {
5590 			window_copy_update_cursor(wme, x, y);
5591 			window_copy_cursor_previous_word_pos(wme,
5592 			    data->separators, &x, &y);
5593 			y -= screen_hsize(data->backing) - data->oy;
5594 		}
5595 		window_copy_update_cursor(wme, x, y);
5596 		break;
5597 	case SEL_LINE:
5598 		window_copy_update_cursor(wme, 0, y);
5599 		break;
5600 	case SEL_CHAR:
5601 		window_copy_update_cursor(wme, x, y);
5602 		window_copy_start_selection(wme);
5603 		break;
5604 	}
5605 
5606 	window_copy_redraw_screen(wme);
5607 	window_copy_drag_update(c, m);
5608 }
5609 
5610 static void
5611 window_copy_drag_update(struct client *c, struct mouse_event *m)
5612 {
5613 	struct window_pane		*wp;
5614 	struct window_mode_entry	*wme;
5615 	struct window_copy_mode_data	*data;
5616 	u_int				 x, y, old_cx, old_cy;
5617 	struct timeval			 tv = {
5618 		.tv_usec = WINDOW_COPY_DRAG_REPEAT_TIME
5619 	};
5620 
5621 	if (c == NULL)
5622 		return;
5623 
5624 	wp = cmd_mouse_pane(m, NULL, NULL);
5625 	if (wp == NULL)
5626 		return;
5627 	wme = TAILQ_FIRST(&wp->modes);
5628 	if (wme == NULL)
5629 		return;
5630 	if (wme->mode != &window_copy_mode && wme->mode != &window_view_mode)
5631 		return;
5632 
5633 	data = wme->data;
5634 	evtimer_del(&data->dragtimer);
5635 
5636 	if (cmd_mouse_at(wp, m, &x, &y, 0) != 0)
5637 		return;
5638 	old_cx = data->cx;
5639 	old_cy = data->cy;
5640 
5641 	window_copy_update_cursor(wme, x, y);
5642 	if (window_copy_update_selection(wme, 1, 0))
5643 		window_copy_redraw_selection(wme, old_cy);
5644 	if (old_cy != data->cy || old_cx == data->cx) {
5645 		if (y == 0) {
5646 			evtimer_add(&data->dragtimer, &tv);
5647 			window_copy_cursor_up(wme, 1);
5648 		} else if (y == screen_size_y(&data->screen) - 1) {
5649 			evtimer_add(&data->dragtimer, &tv);
5650 			window_copy_cursor_down(wme, 1);
5651 		}
5652 	}
5653 }
5654 
5655 static void
5656 window_copy_drag_release(struct client *c, struct mouse_event *m)
5657 {
5658 	struct window_pane		*wp;
5659 	struct window_mode_entry	*wme;
5660 	struct window_copy_mode_data	*data;
5661 
5662 	if (c == NULL)
5663 		return;
5664 
5665 	wp = cmd_mouse_pane(m, NULL, NULL);
5666 	if (wp == NULL)
5667 		return;
5668 	wme = TAILQ_FIRST(&wp->modes);
5669 	if (wme == NULL)
5670 		return;
5671 	if (wme->mode != &window_copy_mode && wme->mode != &window_view_mode)
5672 		return;
5673 
5674 	data = wme->data;
5675 	evtimer_del(&data->dragtimer);
5676 }
5677 
5678 static void
5679 window_copy_jump_to_mark(struct window_mode_entry *wme)
5680 {
5681 	struct window_copy_mode_data	*data = wme->data;
5682 	u_int				 tmx, tmy;
5683 
5684 	tmx = data->cx;
5685 	tmy = screen_hsize(data->backing) + data->cy - data->oy;
5686 	data->cx = data->mx;
5687 	if (data->my < screen_hsize(data->backing)) {
5688 		data->cy = 0;
5689 		data->oy = screen_hsize(data->backing) - data->my;
5690 	} else {
5691 		data->cy = data->my - screen_hsize(data->backing);
5692 		data->oy = 0;
5693 	}
5694 	data->mx = tmx;
5695 	data->my = tmy;
5696 	data->showmark = 1;
5697 	window_copy_update_selection(wme, 0, 0);
5698 	window_copy_redraw_screen(wme);
5699 }
5700 
5701 /* Scroll up if the cursor went off the visible screen. */
5702 static void
5703 window_copy_acquire_cursor_up(struct window_mode_entry *wme, u_int hsize,
5704     u_int oy, u_int oldy, u_int px, u_int py)
5705 {
5706 	u_int	cy, yy, ny, nd;
5707 
5708 	yy = hsize - oy;
5709 	if (py < yy) {
5710 		ny = yy - py;
5711 		cy = 0;
5712 		nd = 1;
5713 	} else {
5714 		ny = 0;
5715 		cy = py - yy;
5716 		nd = oldy - cy + 1;
5717 	}
5718 	while (ny > 0) {
5719 		window_copy_cursor_up(wme, 1);
5720 		ny--;
5721 	}
5722 	window_copy_update_cursor(wme, px, cy);
5723 	if (window_copy_update_selection(wme, 1, 0))
5724 		window_copy_redraw_lines(wme, cy, nd);
5725 }
5726 
5727 /* Scroll down if the cursor went off the visible screen. */
5728 static void
5729 window_copy_acquire_cursor_down(struct window_mode_entry *wme, u_int hsize,
5730     u_int sy, u_int oy, u_int oldy, u_int px, u_int py, int no_reset)
5731 {
5732 	u_int	cy, yy, ny, nd;
5733 
5734 	cy = py - hsize + oy;
5735 	yy = sy - 1;
5736 	if (cy > yy) {
5737 		ny = cy - yy;
5738 		oldy = yy;
5739 		nd = 1;
5740 	} else {
5741 		ny = 0;
5742 		nd = cy - oldy + 1;
5743 	}
5744 	while (ny > 0) {
5745 	  window_copy_cursor_down(wme, 1);
5746 	  ny--;
5747 	}
5748 	if (cy > yy)
5749 		window_copy_update_cursor(wme, px, yy);
5750 	else
5751 		window_copy_update_cursor(wme, px, cy);
5752 	if (window_copy_update_selection(wme, 1, no_reset))
5753 		window_copy_redraw_lines(wme, oldy, nd);
5754 }
5755