emacs-orgmode@gnu.org archives
 help / color / mirror / code / Atom feed
blob bfc4d6c3e36352db40cca578e9f749fbfcc103fb 31315 bytes (raw)
name: contrib/lisp/org-velocity.el 	 # note: path name is non-authoritative(*)

  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
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
 
;;; org-velocity.el --- something like Notational Velocity for Org. -*- lexical-binding: t -*-

;; Copyright (C) 2010-2014 Paul M. Rodriguez

;; Author: Paul M. Rodriguez <paulmrodriguez@gmail.com>
;; Created: 2010-05-05
;; Version: 4.1

;; This file is not part of GNU Emacs.

;; This program is free software; you can redistribute it and/or
;; modify it under the terms of the GNU General Public License as
;; published by the Free Software Foundation version 2.

;; This program is distributed in the hope that it will be useful, but
;; WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
;; General Public License for more details.

;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.

;;; Commentary:
;; Org-Velocity.el is an interface for Org inspired by the minimalist
;; notetaking program Notational Velocity. The idea is to let you
;; amass and access brief notes on many subjects with minimal fuss.
;; Each note is an entry in an ordinary Org file.

;; Org-Velocity can be used in two ways: when called outside Org, to
;; store and access notes in a designated bucket file; or, when called
;; inside Org, as a method for navigating any Org file. (Setting the
;; option `org-velocity-always-use-bucket' disables navigation inside
;; Org files by default, although you can still force this behavior by
;; calling `org-velocity-read' with an argument.)

;; Org-Velocity prompts for search terms in the minibuffer. A list of
;; headings of entries whose text matches your search is updated as
;; you type; you can end the search and visit an entry at any time by
;; clicking on its heading.

;; RET displays the results. If there are no matches, Org-Velocity
;; offers to create a new entry with your search string as its
;; heading. If there are matches, it displays a list of results where
;; the heading of each matching entry is hinted with a number or
;; letter; clicking a result, or typing the matching hint, opens the
;; entry for editing in an indirect buffer. 0 forces a new entry; RET
;; reopens the search for editing.

;; You can customize every step in this process, including the search
;; method, completion for search terms, and templates for creating new
;; entries; M-x customize-group RET org-velocity RET to see all the
;; options.

;; Thanks to Richard Riley, Carsten Dominik, Bastien Guerry, and Jeff
;; Horn for their suggestions.

;;; Usage:
;; (require 'org-velocity)
;; (setq org-velocity-bucket (expand-file-name "bucket.org" org-directory))
;; (global-set-key (kbd "C-c v") 'org-velocity)

;;; Code:
(require 'org)
(require 'button)
(require 'electric)
(require 'dabbrev)
(require 'cl-lib)

(defgroup org-velocity nil
  "Notational Velocity-style interface for Org."
  :tag "Org-Velocity"
  :group 'outlines
  :group 'hypermedia
  :group 'org)

(defcustom org-velocity-bucket ""
  "Where is the bucket file?"
  :group 'org-velocity
  :type 'file)

(defcustom org-velocity-show-previews t
  "Show previews of the text of each heading?"
  :group 'velocity
  :type 'boolean
  :safe 'booleanp)

(defcustom org-velocity-exit-on-match nil
  "When searching incrementally, exit on a single match?"
  :group 'org-velocity
  :type 'boolean
  :safe 'booleanp)

(defcustom org-velocity-force-new nil
  "Should exiting the minibuffer with C-j force a new entry?"
  :group 'org-velocity
  :type 'boolean
  :safe 'booleanp)

(defcustom org-velocity-use-search-ring t
  "Push search to `search-ring' when visiting an entry?

This means that C-s C-s will take you directly to the first
instance of the search string."
  :group 'org-velocity
  :type 'boolean
  :safe 'booleanp)

(defcustom org-velocity-always-use-bucket nil
  "Use bucket file even when called from an Org buffer?"
  :group 'org-velocity
  :type 'boolean
  :safe 'booleanp)

(defcustom org-velocity-use-completion nil
  "Use completion?

Notwithstanding the value of this option, calling
`dabbrev-expand' always completes against the text of the bucket
file."
  :group 'org-velocity
  :type '(choice
          (const :tag "Do not use completion" nil)
          (const :tag "Use completion" t))
  :safe 'booleanp)

(defcustom org-velocity-search-method 'phrase
  "Match on whole phrase, any word, or all words?"
  :group 'org-velocity
  :type '(choice
          (const :tag "Match whole phrase" phrase)
          (const :tag "Match any word" any)
          (const :tag "Match all words" all)
          (const :tag "Match a regular expression" regexp))
  :safe (lambda (v) (memq v '(phrase any all regexp))))

(defcustom org-velocity-capture-templates
  '(("v"
     "Velocity entry"
     entry
     (file "")
     "* %:search\n\n%i%?"))
  "Use these template with `org-capture'.
Meanwhile `org-default-notes-file' is bound to `org-velocity-bucket-file'.
The keyword :search inserts the current search.
See the documentation for `org-capture-templates'."
  :group 'org-velocity
  :type (or (get 'org-capture-templates 'custom-type) 'list))

(defcustom org-velocity-heading-level 1
  "Only match headings at this level or higher.
0 means to match headings at any level."
  :group 'org-velocity
  :type 'integer
  :safe (lambda (x)
          (and (integerp x)
               (>= x 0))))

(defvar crm-separator)                  ;Ensure dynamic binding.

(defsubst org-velocity-grab-preview ()
  "Grab preview of a subtree.
The length of the preview is determined by `window-width'.

Replace all contiguous whitespace with single spaces."
  (let* ((start (progn
                  (forward-line 1)
                  (if (looking-at org-property-start-re)
                      (re-search-forward org-property-end-re)
                    (1- (point)))))
         (string+props (buffer-substring
                        start
                        (min
                         (+ start (window-width))
                         (point-max)))))
    ;; We want to preserve the text properties so that, for example,
    ;; we don't end up with the raw text of links in the preview.
    (with-temp-buffer
      (insert string+props)
      (goto-char (point-min))
      (save-match-data
        (while (re-search-forward split-string-default-separators
                                  (point-max)
                                  t)
          (replace-match " ")))
      (buffer-string))))

(cl-defstruct org-velocity-heading buffer position name level preview)

(defsubst org-velocity-nearest-heading (position)
  "Return last heading at POSITION.
If there is no last heading, return nil."
  (save-excursion
    (goto-char position)
    (re-search-backward (org-velocity-heading-regexp))
    (let ((components (org-heading-components)))
      (make-org-velocity-heading
       :buffer (current-buffer)
       :position (point)
       :name (nth 4 components)
       :level (nth 0 components)
       :preview (if org-velocity-show-previews
                    (org-velocity-grab-preview))))))

(defconst org-velocity-index
  (eval-when-compile
    (nconc (number-sequence 49 57)      ;numbers
           (number-sequence 97 122)	;lowercase letters
           (number-sequence 65 90)))	;uppercase letters
  "List of chars for indexing results.")

(defconst org-velocity-match-buffer-name "*Velocity matches*")

(cl-defun org-velocity-heading-regexp (&optional (level org-velocity-heading-level))
  "Regexp to match headings at LEVEL or deeper."
  (if (zerop level)
      "^\\*+ "
    (format "^\\*\\{1,%d\\} " level)))

(defvar org-velocity-search nil
  "Variable to bind to current search.")

(defun org-velocity-buffer-file-name (&optional buffer)
  "Return the name of the file BUFFER saves to.
Same as function `buffer-file-name' unless BUFFER is an indirect
buffer or a minibuffer. In the former case, return the file name
of the base buffer; in the latter, return the file name of
`minibuffer-selected-window' (or its base buffer)."
  (let ((buffer (if (minibufferp buffer)
                    (window-buffer (minibuffer-selected-window))
                  buffer)))
    (buffer-file-name
     (or (buffer-base-buffer buffer)
         buffer))))

(defun org-velocity-minibuffer-contents ()
  "Return the contents of the minibuffer when it is active."
  (when (active-minibuffer-window)
    (with-current-buffer (window-buffer (active-minibuffer-window))
      (minibuffer-contents))))

(defun org-velocity-nix-minibuffer ()
  "Return the contents of the minibuffer and clear it."
  (when (active-minibuffer-window)
    (with-current-buffer (window-buffer (active-minibuffer-window))
      (prog1 (minibuffer-contents)
        (delete-minibuffer-contents)))))

(defun org-velocity-bucket-file ()
  "Return the proper file for Org-Velocity to search.
If `org-velocity-always-use-bucket' is t, use bucket file;
complain if missing. Otherwise, if an Org file is current, then
use it."
  (let ((org-velocity-bucket
         (when org-velocity-bucket (expand-file-name org-velocity-bucket)))
        (buffer
         (let ((buffer-file (org-velocity-buffer-file-name)))
           (when buffer-file
             ;; Use the target in capture buffers.
             (org-find-base-buffer-visiting buffer-file)))))
    (if org-velocity-always-use-bucket
        (or org-velocity-bucket (error "Bucket required but not defined"))
      (if (and (eq (buffer-local-value 'major-mode (or buffer (current-buffer)))
                   'org-mode)
               (org-velocity-buffer-file-name))
          (org-velocity-buffer-file-name)
        (or org-velocity-bucket
            (error "No bucket and not an Org file"))))))

(defvar org-velocity-bucket-buffer nil)
(defvar org-velocity-navigating nil)

(defsubst org-velocity-bucket-buffer ()
  (or org-velocity-bucket-buffer
      (find-file-noselect (org-velocity-bucket-file))))

(defsubst org-velocity-match-buffer ()
  "Return the proper buffer for Org-Velocity to display in."
  (get-buffer-create org-velocity-match-buffer-name))

(defsubst org-velocity-match-window ()
  (get-buffer-window (org-velocity-match-buffer)))

(defun org-velocity-beginning-of-headings ()
  "Goto the start of the first heading."
  (goto-char (point-min))
  ;; If we are before the first heading we could still be at the
  ;; first heading.
  (or (looking-at (org-velocity-heading-regexp))
      (re-search-forward (org-velocity-heading-regexp))))

(defun org-velocity-make-indirect-buffer (heading)
  "Make or switch to an indirect buffer visiting HEADING."
  (let* ((bucket (org-velocity-heading-buffer heading))
         (name (org-velocity-heading-name heading))
         (existing (get-buffer name)))
    (if (and existing (buffer-base-buffer existing)
             (equal (buffer-base-buffer existing) bucket))
        existing
      (make-indirect-buffer
       bucket
       (generate-new-buffer-name (org-velocity-heading-name heading))
       t))))

(defun org-velocity-capture ()
  "Record a note with `org-capture'."
  (let ((org-capture-templates
         org-velocity-capture-templates))
    (org-capture nil
                 ;; This is no longer automatically selected.
                 (when (null (cdr org-capture-templates))
                   (caar org-capture-templates)))
    (when org-capture-mode
      (rename-buffer org-velocity-search t))))

(defvar org-velocity-saved-winconf nil)
(make-variable-buffer-local 'org-velocity-saved-winconf)

(defun org-velocity-edit-entry (heading)
  (if org-velocity-navigating
      (org-velocity-edit-entry/inline heading)
    (org-velocity-edit-entry/indirect heading)))

(cl-defun org-velocity-goto-entry (heading &key narrow)
  (goto-char (org-velocity-heading-position heading))
  (save-excursion
    (when narrow
      (org-narrow-to-subtree))
    (outline-show-all)))

(defun org-velocity-edit-entry/inline (heading)
  "Edit entry at HEADING in the original buffer."
  (let ((buffer (org-velocity-heading-buffer heading)))
    (pop-to-buffer buffer)
    (with-current-buffer buffer
      (org-velocity-goto-entry heading))))

(defun org-velocity-format-header-line (control-string &rest args)
  (set (make-local-variable 'header-line-format)
       (apply #'format control-string args)))

(defun org-velocity-edit-entry/indirect (heading)
  "Edit entry at HEADING in an indirect buffer."
  (let ((winconf (current-window-configuration))
        (dd default-directory)
        (buffer (org-velocity-make-indirect-buffer heading))
        (inhibit-point-motion-hooks t)
        (inhibit-field-text-motion t))
    (with-current-buffer buffer
      (setq default-directory dd)       ;Inherit default directory.
      (setq org-velocity-saved-winconf winconf)
      (org-velocity-goto-entry heading :narrow t)
      (goto-char (point-max))
      (add-hook 'org-ctrl-c-ctrl-c-hook 'org-velocity-dismiss nil t))
    (pop-to-buffer buffer)
    (org-velocity-format-header-line
     "%s Use C-c C-c to finish."
     (abbreviate-file-name
      (buffer-file-name
       (org-velocity-heading-buffer heading))))))

(defun org-velocity-dismiss ()
  "Save current entry and close indirect buffer."
  (let ((winconf org-velocity-saved-winconf))
    (prog1 t                            ;Tell hook we're done.
      (save-buffer)
      (kill-buffer)
      (when (window-configuration-p winconf)
        (set-window-configuration winconf)))))

(defun org-velocity-visit-button (button)
  (run-hooks 'mouse-leave-buffer-hook)
  (when org-velocity-use-search-ring
    (add-to-history 'search-ring
                    (button-get button 'search)
                    search-ring-max))
  (let ((match (button-get button 'match)))
    (throw 'org-velocity-done match)))

(define-button-type 'org-velocity-button
  'action #'org-velocity-visit-button
  'follow-link 'mouse-face)

(defsubst org-velocity-buttonize (heading)
  "Insert HEADING as a text button with no hints."
  (insert-text-button
   (propertize (org-velocity-heading-name heading) 'face 'link)
   :type 'org-velocity-button
   'match heading
   'search org-velocity-search))

(defsubst org-velocity-insert-preview (heading)
  (when org-velocity-show-previews
    (insert-char ?\  1)
    (insert
     (propertize
      (org-velocity-heading-preview heading)
      'face 'shadow))))

(defvar org-velocity-recursive-headings nil)
(defvar org-velocity-recursive-search nil)

(cl-defun org-velocity-search-with (fun style search
                                        &key (headings org-velocity-recursive-headings))
  (if headings
      (save-restriction
        (dolist (heading headings)
          (widen)
          (let ((start (org-velocity-heading-position heading)))
            (goto-char start)
            (let ((end (save-excursion
                         (org-end-of-subtree)
                         (point))))
              (narrow-to-region start end)
              (org-velocity-search-with fun style search
                                        :headings nil)))))
    (cl-ecase style
      ((phrase any regexp)
       (cl-block nil
         (while (re-search-forward search nil t)
           (let ((match (org-velocity-nearest-heading (point))))
             (funcall fun match))
           ;; Skip to the next heading.
           (unless (re-search-forward (org-velocity-heading-regexp) nil t)
             (cl-return)))))
      ((all)
       (let ((keywords
              (cl-loop for word in (split-string search)
                       collect (concat "\\<" (regexp-quote word) "\\>"))))
         (org-map-entries
          (lambda ()
            ;; Only search the subtree once.
            (setq org-map-continue-from
                  (save-excursion
                    (org-end-of-subtree)
                    (point)))
            (when (cl-loop for word in keywords
                           always (save-excursion
                                    (re-search-forward word org-map-continue-from t)))
              (let ((match (org-velocity-nearest-heading (match-end 0))))
                (funcall fun match))))))))))

(defun org-velocity-all-results (style search)
  (with-current-buffer (org-velocity-bucket-buffer)
    (save-excursion
      (goto-char (point-min))
      (let (matches)
        (org-velocity-search-with (lambda (match)
                                    (push match matches))
                                  style
                                  search)
        (nreverse matches)))))

(defsubst org-velocity-present-match (hint match)
  (with-current-buffer (org-velocity-match-buffer)
    (when hint (insert "#" hint " "))
    (org-velocity-buttonize match)
    (org-velocity-insert-preview match)
    (newline)))

(defun org-velocity-present-search (style search hide-hints)
  (let ((hints org-velocity-index) matches)
    (cl-block nil
      (org-velocity-search-with (lambda (match)
                                  (unless hints
                                    (cl-return))
                                  (let ((hint (if hide-hints
                                                  nil
                                                (car hints))))
                                    (org-velocity-present-match hint match))
                                  (pop hints)
                                  (push match matches))
                                style
                                search))
    (nreverse matches)))

(defun org-velocity-restrict-search ()
  (interactive)
  (let ((search (org-velocity-nix-minibuffer)))
    (when (equal search "")
      (error "No search to restrict to"))
    (push search org-velocity-recursive-search)
    (setq org-velocity-recursive-headings
          (org-velocity-all-results
           org-velocity-search-method
           search))
    ;; TODO We could extend the current search instead of starting
    ;; over.
    (org-velocity-update-match-header)
    (minibuffer-message "Restricting search to %s" search)))

(cl-defun org-velocity-update-match-header (&key (match-buffer (org-velocity-match-buffer))
                                                 (bucket-buffer (org-velocity-bucket-buffer))
                                                 (search-method org-velocity-search-method))
  (let ((navigating? org-velocity-navigating)
        (recursive? org-velocity-recursive-search))
    (with-current-buffer match-buffer
      (org-velocity-format-header-line
       "%s search in %s%s (%s mode)"
       (capitalize (symbol-name search-method))
       (abbreviate-file-name (buffer-file-name bucket-buffer))
       (if (not recursive?)
           ""
         (let ((sep " > "))
           (concat sep (string-join (reverse recursive?) sep))))
       (if navigating? "nav" "notes")))))

(cl-defun org-velocity-present (search &key hide-hints)
  "Buttonize matches for SEARCH in `org-velocity-match-buffer'.
If HIDE-HINTS is non-nil, display entries without indices. SEARCH
binds `org-velocity-search'.

Return matches."
  (let ((match-buffer (org-velocity-match-buffer))
        (bucket-buffer (org-velocity-bucket-buffer))
        (search-method org-velocity-search-method))
    (if (and (stringp search) (not (string= "" search)))
        ;; Fold case when the search string is all lowercase.
        (let ((case-fold-search (equal search (downcase search)))
              (truncate-partial-width-windows t))
          (with-current-buffer match-buffer
            (erase-buffer)
            ;; Permanent locals.
            (setq cursor-type nil
                  truncate-lines t)
            (org-velocity-update-match-header
             :match-buffer match-buffer
             :bucket-buffer bucket-buffer
             :search-method search-method))
          (prog1
              (with-current-buffer bucket-buffer
                (widen)
                (let* ((inhibit-point-motion-hooks t)
                       (inhibit-field-text-motion t)
                       (anchored? (string-match-p "^\\s-" search))
                       (search
                        (cl-ecase search-method
                          (all search)
                          (phrase
                           (if anchored?
                               (regexp-quote search)
                             ;; Anchor the search to the start of a word.
                             (concat "\\<" (regexp-quote search))))
                          (any
                           (concat "\\<" (regexp-opt (split-string search))))
                          (regexp search))))
                  (save-excursion
                    (org-velocity-beginning-of-headings)
                    (condition-case lossage
                        (org-velocity-present-search search-method search hide-hints)
                      (invalid-regexp
                       (minibuffer-message "%s" lossage))))))
            (with-current-buffer match-buffer
              (goto-char (point-min)))))
      (with-current-buffer match-buffer
        (erase-buffer)))))

(defun org-velocity-store-link ()
  "Function for `org-store-link-functions'."
  (if org-velocity-search
      (org-store-link-props
       :search org-velocity-search)))

(add-hook 'org-store-link-functions 'org-velocity-store-link)

(cl-defun org-velocity-create (search &key ask)
  "Create new heading named SEARCH.
If ASK is non-nil, ask first."
  (when (or (null ask) (y-or-n-p "No match found, create? "))
    (let ((org-velocity-search search)
          (org-default-notes-file (org-velocity-bucket-file))
          ;; save a stored link
          org-store-link-plist)
      (org-velocity-capture))
    search))

(defun org-velocity-engine (search)
  "Display a list of headings where SEARCH occurs."
  (let ((org-velocity-search search))
    (unless (or
             (not (stringp search))
             (string= "" search))	;exit on empty string
      (cl-case
          (if (and org-velocity-force-new (eq last-command-event ?\C-j))
              :force
            (let* ((org-velocity-index (org-velocity-adjust-index))
                   (matches (org-velocity-present search)))
              (cond ((null matches) :new)
                    ((null (cdr matches)) :follow)
                    (t :prompt))))
        (:prompt (progn
                   (pop-to-buffer (org-velocity-match-buffer))
                   (let ((hint (org-velocity-electric-read-hint)))
                     (when hint (cl-case hint
                                  (:edit (org-velocity-read nil search))
                                  (:force (org-velocity-create search))
                                  (otherwise (org-velocity-activate-button hint)))))))
        (:new (unless (org-velocity-create search :ask t)
                (org-velocity-read nil search)))
        (:force (org-velocity-create search))
        (:follow (if (y-or-n-p "One match, follow? ")
                     (progn
                       (set-buffer (org-velocity-match-buffer))
                       (goto-char (point-min))
                       (button-activate (next-button (point))))
                   (org-velocity-read nil search)))))))

(defun org-velocity-activate-button (char)
  "Go to button on line number associated with CHAR in `org-velocity-index'."
  (goto-char (point-min))
  (forward-line (cl-position char org-velocity-index))
  (goto-char
   (button-start
    (next-button (point))))
  (message "%s" (button-label (button-at (point))))
  (button-activate (button-at (point))))

(defun org-velocity-electric-undefined ()
  "Complain about an undefined key."
  (interactive)
  (message "%s"
           (substitute-command-keys
            "\\[org-velocity-electric-new] for new entry,
\\[org-velocity-electric-edit] to edit search,
\\[scroll-up] to scroll up,
\\[scroll-down] to scroll down,
\\[keyboard-quit] to quit."))
  (sit-for 4))

(defun org-velocity-electric-follow (ev)
  "Follow a hint indexed by keyboard event EV."
  (interactive (list last-command-event))
  (if (not (> (cl-position ev org-velocity-index)
              (1- (count-lines (point-min) (point-max)))))
      (throw 'org-velocity-select ev)
    (call-interactively 'org-velocity-electric-undefined)))

(defun org-velocity-electric-edit ()
  "Edit the search string."
  (interactive)
  (throw 'org-velocity-select :edit))

(defun org-velocity-electric-new ()
  "Force a new entry."
  (interactive)
  (throw 'org-velocity-select :force))

(defvar org-velocity-electric-map
  (let ((map (make-sparse-keymap)))
    (define-key map [t] 'org-velocity-electric-undefined)
    (dolist (c org-velocity-index)
      (define-key map (char-to-string c)
        'org-velocity-electric-follow))
    (define-key map "0" 'org-velocity-electric-new)
    (define-key map "\C-v" 'scroll-up)
    (define-key map "\M-v" 'scroll-down)
    (define-key map (kbd "RET") 'org-velocity-electric-edit)
    (define-key map [mouse-1] nil)
    (define-key map [mouse-2] nil)
    (define-key map [escape] 'keyboard-quit)
    (define-key map "\C-h" 'help-command)
    map))

(defun org-velocity-electric-read-hint ()
  "Read index of button electrically."
  (with-current-buffer (org-velocity-match-buffer)
    (when (featurep 'evil)
      ;; NB Idempotent.
      (evil-make-overriding-map org-velocity-electric-map))
    (use-local-map org-velocity-electric-map)
    (catch 'org-velocity-select
      (Electric-command-loop 'org-velocity-select "Follow: "))))

(defvar org-velocity-incremental-keymap
  (let ((map (make-sparse-keymap)))
    (define-key map "\C-v" 'scroll-up)
    (define-key map "\M-v" 'scroll-down)
    map))

(defun org-velocity-displaying-completions-p ()
  "Is there a *Completions* buffer showing?"
  (get-window-with-predicate
   (lambda (w)
     (eq (buffer-local-value 'major-mode (window-buffer w))
         'completion-list-mode))))

(defun org-velocity-update ()
  "Display results of search without hinting."
  (unless (org-velocity-displaying-completions-p)
    (let* ((search (org-velocity-minibuffer-contents))
           (matches (org-velocity-present search :hide-hints t)))
      (cond ((null matches)
             (select-window (active-minibuffer-window))
             (unless (or (null search) (= (length search) 0))
               (minibuffer-message "No match; RET to create")))
            ((and (null (cdr matches))
                  org-velocity-exit-on-match)
             (throw 'click search))
            (t
             (with-current-buffer (org-velocity-match-buffer)
               (use-local-map org-velocity-incremental-keymap)))))))

(defvar dabbrev--last-abbreviation)

(defun org-velocity-dabbrev-completion-list (abbrev)
  "Return all dabbrev completions for ABBREV."
  ;; This is based on `dabbrev-completion'.
  (dabbrev--reset-global-variables)
  (setq dabbrev--last-abbreviation abbrev)
  (dabbrev--find-all-expansions abbrev case-fold-search))

(defvar org-velocity-local-completion-map
  (let ((map (make-sparse-keymap)))
    (set-keymap-parent map minibuffer-local-completion-map)
    (define-key map " " 'self-insert-command)
    (define-key map "?" 'self-insert-command)
    (define-key map [remap minibuffer-complete] 'minibuffer-complete-word)
    (define-key map [(control ?@)] 'org-velocity-restrict-search)
    (define-key map [(control ?\s)] 'org-velocity-restrict-search)
    map)
  "Keymap for completion with `completing-read'.")

(defun org-velocity-read-with-completion (prompt)
  "Completing read with PROMPT."
  (let ((minibuffer-local-completion-map
         org-velocity-local-completion-map)
        (completion-no-auto-exit t)
        (crm-separator " "))
    (completing-read prompt
                     (completion-table-dynamic
                      'org-velocity-dabbrev-completion-list))))

(cl-defun org-velocity-adjust-index
    (&optional (match-window (org-velocity-match-window)))
  "Truncate or extend `org-velocity-index' to the lines in
MATCH-WINDOW."
  (with-selected-window match-window
    (let ((lines (window-height))
          (hints (length org-velocity-index)))
      (cond ((= lines hints)
             org-velocity-index)
            ;; Truncate the index to the size of
            ;; the buffer to be displayed.
            ((< lines hints)
             (cl-subseq org-velocity-index 0 lines))
            ;; If the window is so tall we run out of indices, at
            ;; least make the additional results clickable.
            ((> lines hints)
             (append org-velocity-index
                     (make-list (- lines hints) nil)))))))

(defun org-velocity-incremental-read (prompt)
  "Read string with PROMPT and display results incrementally.
Stop searching once there are more matches than can be
displayed."
  (let ((res
         (unwind-protect
             (let* ((match-window (display-buffer (org-velocity-match-buffer)))
                    (org-velocity-index (org-velocity-adjust-index match-window)))
               (catch 'click
                 (add-hook 'post-command-hook 'org-velocity-update)
                 (cond ((eq org-velocity-search-method 'regexp)
                        (read-regexp prompt))
                       (org-velocity-use-completion
                        (org-velocity-read-with-completion prompt))
                       (t (read-string prompt)))))
           (remove-hook 'post-command-hook 'org-velocity-update))))
    (if (bufferp res) (org-pop-to-buffer-same-window res) res)))

(defun org-velocity (arg &optional search)
  "Read a search string SEARCH for Org-Velocity interface.
This means that a buffer will display all headings where SEARCH
occurs, where one can be selected by a mouse click or by typing
its index.  If SEARCH does not occur, then a new heading may be
created named SEARCH.

If `org-velocity-bucket' is defined and
`org-velocity-always-use-bucket' is non-nil, then the bucket file
will be used; otherwise, this will work when called in any Org
file.

Calling with ARG reverses which file – the current file or the
bucket file – to use. If the bucket file would have been used,
then the current file is used instead, and vice versa."
  (interactive "P")
  (let ((org-velocity-always-use-bucket
         (if org-velocity-always-use-bucket
             (not arg)
           arg)))
    ;; complain if inappropriate
    (cl-assert (org-velocity-bucket-file))
    (let* ((starting-buffer (current-buffer))
           (org-velocity-bucket-buffer
            (find-file-noselect (org-velocity-bucket-file)))
           (org-velocity-navigating
            (eq starting-buffer org-velocity-bucket-buffer))
           (org-velocity-recursive-headings '())
           (org-velocity-recursive-search '())
           (org-velocity-heading-level
            (if org-velocity-navigating
                0
              org-velocity-heading-level))
           (dabbrev-search-these-buffers-only
            (list org-velocity-bucket-buffer)))
      (unwind-protect
          (let ((match
                 (catch 'org-velocity-done
                   (org-velocity-engine
                    (or search
                        (org-velocity-incremental-read "Velocity search: ")))
                   nil)))
            (when (org-velocity-heading-p match)
              (org-velocity-edit-entry match)))
        (kill-buffer (org-velocity-match-buffer))))))

(defalias 'org-velocity-read 'org-velocity)

(provide 'org-velocity)

;;; org-velocity.el ends here

debug log:

solving bfc4d6c3e ...
found bfc4d6c3e in https://git.savannah.gnu.org/cgit/emacs/org-mode.git

(*) Git path names are given by the tree(s) the blob belongs to.
    Blobs themselves have no identifier aside from the hash of its contents.^

Code repositories for project(s) associated with this public inbox

	https://git.savannah.gnu.org/cgit/emacs/org-mode.git

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).