calc / calc-yank.el

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
;; Calculator for GNU Emacs, part II [calc-yank.el]
;; Copyright (C) 1990, 1991, 1992, 1993 Free Software Foundation, Inc.
;; Written by Dave Gillespie, daveg@synaptics.com.

;; This file is part of GNU Emacs.

;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY.  No author or distributor
;; accepts responsibility to anyone for the consequences of using it
;; or for whether it serves any particular purpose or works at all,
;; unless he says so in writing.  Refer to the GNU Emacs General Public
;; License for full details.

;; Everyone is granted permission to copy, modify and redistribute
;; GNU Emacs, but only under the conditions described in the
;; GNU Emacs General Public License.   A copy of this license is
;; supposed to have been given to you along with GNU Emacs so you
;; can know your rights and responsibilities.  It should be in a
;; file named COPYING.  Among other things, the copyright notice
;; and this notice must be preserved on all copies.



;; This file is autoloaded from calc-ext.el.
(require 'calc-ext)

(require 'calc-macs)

(defun calc-Need-calc-yank () nil)


;;; Kill ring commands.

(defun calc-kill (nn &optional no-delete)
  (interactive "P")
  (if (eq major-mode 'calc-mode)
      (calc-wrapper
       (calc-force-refresh)
       (calc-set-command-flag 'no-align)
       (let ((num (max (calc-locate-cursor-element (point)) 1))
	     (n (prefix-numeric-value nn)))
	 (if (< n 0)
	     (progn
	       (if (eobp)
		   (setq num (1- num)))
	       (setq num (- num n)
		     n (- n))))
	 (let ((stuff (calc-top-list n (- num n -1))))
	   (calc-cursor-stack-index num)
	   (let ((first (point)))
	     (calc-cursor-stack-index (- num n))
	     (if (null nn)
		 (backward-char 1))   ; don't include newline for raw C-k
	     (copy-region-as-kill first (point))
	     (if (not no-delete)
		 (calc-pop-stack n (- num n -1))))
	   (setq calc-last-kill (cons (car kill-ring) stuff)))))
    (kill-line nn))
)

(defun calc-force-refresh ()
  (if (or calc-executing-macro calc-display-dirty)
      (let ((calc-executing-macro nil))
	(calc-refresh)))
)

(defun calc-locate-cursor-element (pt)
  (save-excursion
    (goto-char (point-max))
    (calc-locate-cursor-scan (- calc-stack-top) calc-stack pt))
)

(defun calc-locate-cursor-scan (n stack pt)
  (if (or (<= (point) pt)
	  (null stack))
      n
    (forward-line (- (nth 1 (car stack))))
    (calc-locate-cursor-scan (1+ n) (cdr stack) pt))
)

(defun calc-kill-region (top bot &optional no-delete)
  (interactive "r")
  (if (eq major-mode 'calc-mode)
      (calc-wrapper
       (calc-force-refresh)
       (calc-set-command-flag 'no-align)
       (let* ((top-num (calc-locate-cursor-element top))
	      (bot-num (calc-locate-cursor-element (1- bot)))
	      (num (- top-num bot-num -1)))
	 (copy-region-as-kill top bot)
	 (setq calc-last-kill (cons (car kill-ring)
				    (calc-top-list num bot-num)))
	 (if (not no-delete)
	     (calc-pop-stack num bot-num))))
    (if no-delete
	(copy-region-as-kill top bot)
      (kill-region top bot)))
)

(defun calc-copy-as-kill (n)
  (interactive "P")
  (calc-kill n t)
)

(defun calc-copy-region-as-kill (top bot)
  (interactive "r")
  (calc-kill-region top bot t)
)

;;; This function uses calc-last-kill if possible to get an exact result,
;;; otherwise it just parses the yanked string.
;;; Modified to use Emacs 19 extended concept of kill-ring. -- daveg 12/15/96
(defun calc-yank ()
  (interactive)
  (calc-wrapper
   (calc-pop-push-record-list
    0 "yank"
    (let ((thing (if (fboundp 'current-kill)
		     (current-kill 0 t)
		   (car kill-ring-yank-pointer))))
      (if (eq (car-safe calc-last-kill) thing)
	  (cdr calc-last-kill)
	(if (stringp thing)
	    (let ((val (math-read-exprs (calc-clean-newlines thing))))
	      (if (eq (car-safe val) 'error)
		  (progn
		    (setq val (math-read-exprs thing))
		    (if (eq (car-safe val) 'error)
			(error "Bad format in yanked data")
		      val))
		val)))))))
)

(defun calc-clean-newlines (s)
  (cond
   
   ;; Omit leading/trailing whitespace
   ((or (string-match "\\`[ \n\r]+\\([^\001]*\\)\\'" s)
	(string-match "\\`\\([^\001]*\\)[ \n\r]+\\'" s))
    (calc-clean-newlines (math-match-substring s 1)))

   ;; Convert newlines to commas
   ((string-match "\\`\\(.*\\)[\n\r]+\\([^\001]*\\)\\'" s)
    (calc-clean-newlines (concat (math-match-substring s 1) ","
				 (math-match-substring s 2))))
   
   (t s))
)


(defun calc-do-grab-region (top bot arg)
  (and (memq major-mode '(calc-mode calc-trail-mode))
       (error "This command works only in a regular text buffer."))
  (let* ((from-buffer (current-buffer))
	 (calc-was-started (get-buffer-window "*Calculator*"))
	 (single nil)
	 data vals pos)
    (if arg
	(if (consp arg)
	    (setq single t)
	  (setq arg (prefix-numeric-value arg))
	  (if (= arg 0)
	      (save-excursion
		(beginning-of-line)
		(setq top (point))
		(end-of-line)
		(setq bot (point)))
	    (save-excursion
	      (setq top (point))
	      (forward-line arg)
	      (if (> arg 0)
		  (setq bot (point))
		(setq bot top
		      top (point)))))))
    (setq data (buffer-substring top bot))
    (calc)
    (if single
	(setq vals (math-read-expr data))
      (setq vals (math-read-expr (concat "[" data "]")))
      (and (eq (car-safe vals) 'vec)
	   (= (length vals) 2)
	   (eq (car-safe (nth 1 vals)) 'vec)
	   (setq vals (nth 1 vals))))
    (if (eq (car-safe vals) 'error)
	(progn
	  (if calc-was-started
	      (pop-to-buffer from-buffer)
	    (calc-quit t)
	    (switch-to-buffer from-buffer))
	  (goto-char top)
	  (forward-char (+ (nth 1 vals) (if single 0 1)))
	  (error (nth 2 vals))))
    (calc-slow-wrapper
     (calc-enter-result 0 "grab" vals)))
)


(defun calc-do-grab-rectangle (top bot arg &optional reduce)
  (and (memq major-mode '(calc-mode calc-trail-mode))
       (error "This command works only in a regular text buffer."))
  (let* ((col1 (save-excursion (goto-char top) (current-column)))
	 (col2 (save-excursion (goto-char bot) (current-column)))
	 (from-buffer (current-buffer))
	 (calc-was-started (get-buffer-window "*Calculator*"))
	 data mat vals lnum pt pos)
    (if (= col1 col2)
	(save-excursion
	  (or (= col1 0)
	      (error "Point and mark must be at beginning of line, or define a rectangle"))
	  (goto-char top)
	  (while (< (point) bot)
	    (setq pt (point))
	    (forward-line 1)
	    (setq data (cons (buffer-substring pt (1- (point))) data)))
	  (setq data (nreverse data)))
      (setq data (extract-rectangle top bot)))
    (calc)
    (setq mat (list 'vec)
	  lnum 0)
    (and arg
	 (setq arg (if (consp arg) 0 (prefix-numeric-value arg))))
    (while data
      (if (natnump arg)
	  (progn
	    (if (= arg 0)
		(setq arg 1000000))
	    (setq pos 0
		  vals (list 'vec))
	    (let ((w (length (car data)))
		  j v)
	      (while (< pos w)
		(setq j (+ pos arg)
		      v (if (>= j w)
			    (math-read-expr (substring (car data) pos))
			  (math-read-expr (substring (car data) pos j))))
		(if (eq (car-safe v) 'error)
		    (setq vals v w 0)
		  (setq vals (nconc vals (list v))
			pos j)))))
	(if (string-match "\\` *-?[0-9][0-9]?[0-9]?[0-9]?[0-9]?[0-9]? *\\'"
			  (car data))
	    (setq vals (list 'vec (string-to-int (car data))))
	  (if (and (null arg)
		   (string-match "[[{][^][{}]*[]}]" (car data)))
	      (setq pos (match-beginning 0)
		    vals (math-read-expr (math-match-substring (car data) 0)))
	    (let ((s (if (string-match
			  "\\`\\([0-9]+:[ \t]\\)?\\(.*[^, \t]\\)[, \t]*\\'"
			  (car data))
			 (math-match-substring (car data) 2)
		       (car data))))
	      (setq pos -1
		    vals (math-read-expr (concat "[" s "]")))
	      (if (eq (car-safe vals) 'error)
		  (let ((v2 (math-read-expr s)))
		    (or (eq (car-safe v2) 'error)
			(setq vals (list 'vec v2)))))))))
      (if (eq (car-safe vals) 'error)
	  (progn
	    (if calc-was-started
		(pop-to-buffer from-buffer)
	      (calc-quit t)
	      (switch-to-buffer from-buffer))
	    (goto-char top)
	    (forward-line lnum)
	    (forward-char (+ (nth 1 vals) (min col1 col2) pos))
	    (error (nth 2 vals))))
      (or (equal vals '(vec))
	  (setq mat (cons vals mat)))
      (setq data (cdr data)
	    lnum (1+ lnum)))
    (calc-slow-wrapper
     (if reduce
	 (calc-enter-result 0 "grb+" (list reduce '(var add var-add)
					   (nreverse mat)))
       (calc-enter-result 0 "grab" (nreverse mat)))))
)


(defun calc-copy-to-buffer (nn)
  "Copy the top of stack into an editing buffer."
  (interactive "P")
  (let ((thebuf (and (not (memq major-mode '(calc-mode calc-trail-mode)))
		     (current-buffer)))
	(movept nil)
	oldbuf newbuf)
    (calc-wrapper
     (save-excursion
       (calc-force-refresh)
       (let ((n (prefix-numeric-value nn))
	     (eat-lnums calc-line-numbering)
	     (big-offset (if (eq calc-language 'big) 1 0))
	     top bot)
	 (setq oldbuf (current-buffer)
	       newbuf (or thebuf
			  (calc-find-writable-buffer (buffer-list) 0)
			  (calc-find-writable-buffer (buffer-list) 1)
			  (error "No other buffer")))
	 (cond ((and (or (null nn)
			 (consp nn))
		     (= (calc-substack-height 0)
			(- (1- (calc-substack-height 1)) big-offset)))
		(calc-cursor-stack-index 1)
		(if (looking-at
		     (if calc-line-numbering "[0-9]+: *[^ \n]" " *[^ \n]"))
		    (goto-char (1- (match-end 0))))
		(setq eat-lnums nil
		      top (point))
		(calc-cursor-stack-index 0)
		(setq bot (- (1- (point)) big-offset)))
	       ((> n 0)
		(calc-cursor-stack-index n)
		(setq top (point))
		(calc-cursor-stack-index 0)
		(setq bot (- (point) big-offset)))
	       ((< n 0)
		(calc-cursor-stack-index (- n))
		(setq top (point))
		(calc-cursor-stack-index (1- (- n)))
		(setq bot (point)))
	       (t
		(goto-char (point-min))
		(forward-line 1)
		(setq top (point))
		(calc-cursor-stack-index 0)
		(setq bot (point))))
	 (save-excursion
	   (set-buffer newbuf)
	   (if (consp nn)
	       (kill-region (region-beginning) (region-end)))
	   (push-mark (point) t)
	   (if (and overwrite-mode (not (consp nn)))
	       (calc-overwrite-string (save-excursion
					(set-buffer oldbuf)
					(buffer-substring top bot))
				      eat-lnums)
	     (or (bolp) (setq eat-lnums nil))
	     (insert-buffer-substring oldbuf top bot)
	     (and eat-lnums
		  (let ((n 1))
		    (while (and (> (point) (mark))
				(progn
				  (forward-line -1)
				  (>= (point) (mark))))
		      (delete-char 4)
		      (setq n (1+ n)))
		    (forward-line n))))
	   (if thebuf (setq movept (point)))
	   (if (get-buffer-window (current-buffer))
	       (set-window-point (get-buffer-window (current-buffer))
				 (point)))))))
    (if movept (goto-char movept))
    (and (consp nn)
	 (not thebuf)
	 (progn
	   (calc-quit t)
	   (switch-to-buffer newbuf))))
)

(defun calc-overwrite-string (str eat-lnums)
  (if (string-match "\n\\'" str)
      (setq str (substring str 0 -1)))
  (if eat-lnums
      (setq str (substring str 4)))
  (if (and (string-match "\\`[-+]?[0-9.]+\\(e-?[0-9]+\\)?\\'" str)
	   (looking-at "[-+]?[0-9.]+\\(e-?[0-9]+\\)?"))
      (progn
	(delete-region (point) (match-end 0))
	(insert str))
    (let ((i 0))
      (while (< i (length str))
	(if (= (setq last-command-char (aref str i)) ?\n)
	    (or (= i (1- (length str)))
		(let ((pt (point)))
		  (end-of-line)
		  (delete-region pt (point))
		  (if (eobp)
		      (insert "\n")
		    (forward-char 1))
		  (if eat-lnums (setq i (+ i 4)))))
	  (self-insert-command 1))
	(setq i (1+ i)))))
)

;;; First, require that buffer is visible and does not begin with "*"
;;; Second, require only that it not begin with "*Calc"
(defun calc-find-writable-buffer (buf mode)
  (and buf
       (if (or (string-match "\\`\\( .*\\|\\*Calc.*\\)"
			     (buffer-name (car buf)))
	       (and (= mode 0)
		    (or (string-match "\\`\\*.*" (buffer-name (car buf)))
			(not (get-buffer-window (car buf))))))
	   (calc-find-writable-buffer (cdr buf) mode)
	 (car buf)))
)


(defun calc-edit (n)
  (interactive "p")
  (calc-slow-wrapper
   (if (eq n 0)
       (setq n (calc-stack-size)))
   (let* ((flag nil)
	  (allow-ret (> n 1))
	  (list (math-showing-full-precision
		 (mapcar (if (> n 1)
			     (function (lambda (x)
					 (math-format-flat-expr x 0)))
			   (function
			    (lambda (x)
			      (if (math-vectorp x) (setq allow-ret t))
			      (math-format-nice-expr x (frame-width)))))
			 (if (> n 0)
			     (calc-top-list n)
			   (calc-top-list 1 (- n)))))))
     (calc-edit-mode (list 'calc-finish-stack-edit (or flag n)) allow-ret)
     (while list
       (insert (car list) "\n")
       (setq list (cdr list)))))
  (calc-show-edit-buffer)
)

(defun calc-alg-edit (str)
  (calc-edit-mode '(calc-finish-stack-edit 0))
  (calc-show-edit-buffer)
  (insert str "\n")
  (backward-char 1)
  (calc-set-command-flag 'do-edit)
)

(defvar calc-edit-mode-map nil "Keymap for use by the calc-edit command.")
(if calc-edit-mode-map
    ()
  (setq calc-edit-mode-map (make-sparse-keymap))
  (define-key calc-edit-mode-map "\n" 'calc-edit-finish)
  (define-key calc-edit-mode-map "\r" 'calc-edit-return)
  (define-key calc-edit-mode-map "\C-c\C-c" 'calc-edit-finish)
)

(defun calc-edit-mode (&optional handler allow-ret title)
  "Calculator editing mode.  Press RET, LFD, or C-c C-c to finish.
To cancel the edit, simply kill the *Calc Edit* buffer."
  (interactive)
  (or handler
      (error "This command can be used only indirectly through calc-edit."))
  (let ((oldbuf (current-buffer))
	(buf (get-buffer-create "*Calc Edit*")))
    (set-buffer buf)
    (kill-all-local-variables)
    (use-local-map calc-edit-mode-map)
    (setq buffer-read-only nil)
    (setq truncate-lines nil)
    (setq major-mode 'calc-edit-mode)
    (setq mode-name "Calc Edit")
    (run-hooks 'calc-edit-mode-hook)
    (make-local-variable 'calc-original-buffer)
    (setq calc-original-buffer oldbuf)
    (make-local-variable 'calc-return-buffer)
    (setq calc-return-buffer oldbuf)
    (make-local-variable 'calc-one-window)
    (setq calc-one-window (and (one-window-p t) pop-up-windows))
    (make-local-variable 'calc-edit-handler)
    (setq calc-edit-handler handler)
    (make-local-variable 'calc-restore-trail)
    (setq calc-restore-trail (get-buffer-window (calc-trail-buffer)))
    (make-local-variable 'calc-allow-ret)
    (setq calc-allow-ret allow-ret)
    (erase-buffer)
    (insert (or title title "Calc Edit Mode")
	    ".  Press "
	    (if (eq (lookup-key (current-global-map) "\e#") 'calc-dispatch)
		"M-# M-# or C-c C-c"
	      (if allow-ret "C-c C-c" "RET"))
	    " to finish, "
	    (if (eq (lookup-key (current-global-map) "\e#") 'calc-dispatch)
		"M-# x"
	      "C-x k RET")
	    " to cancel.\n"))
)
(put 'calc-edit-mode 'mode-class 'special)

(defun calc-show-edit-buffer ()
  (let ((buf (current-buffer)))
    (if (and (one-window-p t) pop-up-windows)
	(pop-to-buffer (get-buffer-create "*Calc Edit*"))
      (and calc-embedded-info (get-buffer-window (aref calc-embedded-info 1))
	   (select-window (get-buffer-window (aref calc-embedded-info 1))))
      (switch-to-buffer (get-buffer-create "*Calc Edit*")))
    (setq calc-return-buffer buf)
    (if (and (< (window-width) (frame-width))
	     calc-display-trail)
	(let ((win (get-buffer-window (calc-trail-buffer))))
	  (if win
	      (delete-window win))))
    (set-buffer-modified-p nil)
    (goto-char (point-min))
    (forward-line 1))
)

(defun calc-edit-return ()
  (interactive)
  (if (and (boundp 'calc-allow-ret) calc-allow-ret)
      (newline)
    (calc-edit-finish))
)

(defun calc-edit-finish (&optional keep)
  "Finish calc-edit mode.  Parse buffer contents and push them on the stack."
  (interactive "P")
  (message "Working...")
  (or (and (boundp 'calc-original-buffer)
	   (boundp 'calc-return-buffer)
	   (boundp 'calc-one-window)
	   (boundp 'calc-edit-handler)
	   (boundp 'calc-restore-trail)
	   (eq major-mode 'calc-edit-mode))
      (error "This command is valid only in buffers created by calc-edit."))
  (let ((buf (current-buffer))
	(original calc-original-buffer)
	(return calc-return-buffer)
	(one-window calc-one-window)
	(disp-trail calc-restore-trail))
    (save-excursion
      (if (or (null (buffer-name original))
	      (progn
		(set-buffer original)
		(not (eq major-mode 'calc-mode))))
	  (error "Original calculator buffer has been corrupted.")))
    (goto-char (point-min))
    (if (looking-at "Calc Edit\\|Editing ")
	(forward-line 1))
    (if (buffer-modified-p)
	(eval calc-edit-handler))
    (if one-window
	(delete-window))
    (if (get-buffer-window return)
	(select-window (get-buffer-window return))
      (switch-to-buffer return))
    (if keep
	(bury-buffer buf)
      (kill-buffer buf))
    (if disp-trail
	(calc-wrapper
	 (calc-trail-display 1 t)))
    (message ""))
)

(defun calc-edit-cancel ()
  "Cancel calc-edit mode.  Ignore the Calc Edit buffer and don't change stack."
  (interactive)
  (let ((calc-edit-handler nil))
    (calc-edit-finish))
  (message "(Cancelled)")
)

(defun calc-finish-stack-edit (num)
  (let ((buf (current-buffer))
	(str (buffer-substring (point) (point-max)))
	(start (point))
	pos)
    (if (and (integerp num) (> num 1))
	(while (setq pos (string-match "\n." str))
	  (aset str pos ?\,)))
    (switch-to-buffer calc-original-buffer)
    (let ((vals (let ((calc-language nil)
		      (math-expr-opers math-standard-opers))
		  (and (string-match "[^\n\t ]" str)
		       (math-read-exprs str)))))
      (if (eq (car-safe vals) 'error)
	  (progn
	    (switch-to-buffer buf)
	    (goto-char (+ start (nth 1 vals)))
	    (error (nth 2 vals))))
      (calc-wrapper
       (if (symbolp num)
	   (progn
	     (set num (car vals))
	     (calc-refresh-evaltos num))
	 (if disp-trail
	     (calc-trail-display 1 t))
	 (and vals
	      (let ((calc-simplify-mode (if (eq last-command-char ?\C-j)
					    'none
					  calc-simplify-mode)))
		(if (>= num 0)
		    (calc-enter-result num "edit" vals)
		  (calc-enter-result 1 "edit" vals (- num)))))))))
)
Tip: Filter by directory path e.g. /media app.js to search for public/media/app.js.
Tip: Use camelCasing e.g. ProjME to search for ProjectModifiedEvent.java.
Tip: Filter by extension type e.g. /repo .js to search for all .js files in the /repo directory.
Tip: Separate your search with spaces e.g. /ssh pom.xml to search for src/ssh/pom.xml.
Tip: Use ↑ and ↓ arrow keys to navigate and return to view the file.
Tip: You can also navigate files with Ctrl+j (next) and Ctrl+k (previous) and view the file with Ctrl+o.
Tip: You can also navigate files with Alt+j (next) and Alt+k (previous) and view the file with Alt+o.