/
helm-elisp.el
1175 lines (1066 loc) · 48.1 KB
/
helm-elisp.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
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
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
;;; helm-elisp.el --- Elisp symbols completion for helm. -*- lexical-binding: t -*-
;; Copyright (C) 2012 ~ 2023 Thierry Volpiatto
;; 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, either version 3 of the License, or
;; (at your option) any later version.
;; 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 this program. If not, see <http://www.gnu.org/licenses/>.
;;; Code:
(require 'cl-lib)
(require 'helm)
(require 'helm-lib)
(require 'helm-help)
(require 'helm-types)
(require 'helm-utils)
(require 'helm-info)
(require 'helm-eval)
(require 'helm-files)
(declare-function helm-describe-function "helm-lib")
(declare-function helm-describe-variable "helm-lib")
(declare-function helm-describe-face "helm-lib")
(declare-function helm-read-file-name "helm-mode")
(declare-function helm-comp-read "helm-mode")
(declare-function helm-M-x-transformer-no-sort-no-props "helm-command")
(defvar helm-M-x-show-short-doc)
(defvar completions-detailed)
(defvar helm-completions-detailed)
;;; Customizable values
(defgroup helm-elisp nil
"Elisp related Applications and libraries for Helm."
:group 'helm)
(defcustom helm-turn-on-show-completion t
"Display candidate in `current-buffer' while moving selection when non--nil."
:group 'helm-elisp
:type 'boolean)
(defcustom helm-show-completion-min-window-height 7
"Minimum completion window height used in show completion.
This is used in macro `with-helm-show-completion'."
:group 'helm-elisp
:type 'integer)
(defcustom helm-lisp-quoted-function-list
'(funcall apply mapc cl-mapc mapcar cl-mapcar
callf callf2 cl-callf cl-callf2 fset
fboundp fmakunbound symbol-function)
"List of function where quoted function completion happen.
E.g. give only function names after (funcall \\='."
:group 'helm-elisp
:type '(repeat (choice symbol)))
(defcustom helm-lisp-unquoted-function-list
'(function defadvice)
"List of function where unquoted function completion happen.
E.g. give only function names after (function ."
:group 'helm-elisp
:type '(repeat (choice symbol)))
(defcustom helm-apropos-fuzzy-match nil
"Enable fuzzy matching for `helm-apropos' when non-nil."
:group 'helm-elisp
:type 'boolean)
(defcustom helm-lisp-fuzzy-completion nil
"Enable fuzzy matching in emacs-lisp completion when non-nil.
NOTE: This enables fuzzy matching in Helm native implementation of
elisp completion, but not on helmized elisp completion, i.e. fuzzy
completion is not available in `completion-at-point'."
:group 'helm-elisp
:type 'boolean)
(defcustom helm-apropos-function-list '(helm-def-source--emacs-commands
helm-def-source--emacs-functions
helm-def-source--eieio-classes
helm-def-source--eieio-generic
helm-def-source--emacs-variables
helm-def-source--emacs-faces)
"A list of functions that build helm sources to use in `helm-apropos'."
:group 'helm-elisp
:type '(repeat (choice symbol)))
(defcustom helm-apropos-defaut-info-lookup-sources '(helm-source-info-elisp
helm-source-info-cl
helm-source-info-eieio)
"A list of sources to look into when searching info page of a symbol."
:group 'helm-elisp
:type '(repeat (choice symbol)))
(defcustom helm-show-completion-display-function
(if (display-graphic-p)
#'helm-display-buffer-in-own-frame
#'helm-show-completion-default-display-function)
"The function used to display helm completion buffer.
This function is used by `with-helm-show-completion', when nil
fallback to `helm-default-display-buffer'.
Default is to use a separate frame on graphic display and
`helm-show-completion-default-display-function' on non graphic
display."
:group 'helm-elisp
:type 'function)
;;; Faces
;;
;;
(defgroup helm-elisp-faces nil
"Customize the appearance of helm-elisp."
:prefix "helm-"
:group 'helm-elisp
:group 'helm-faces)
(defface helm-lisp-show-completion
`((t ,@(and (>= emacs-major-version 27) '(:extend t))
:background "DarkSlateGray"))
"Face used for showing candidates in `helm-lisp-completion'."
:group 'helm-elisp-faces)
(defface helm-lisp-completion-info
`((t ,@(and (>= emacs-major-version 27) '(:extend t))
:foreground "red"))
"Face used for showing info in `helm-lisp-completion'."
:group 'helm-elisp-faces)
(defcustom helm-elisp-help-function
'helm-elisp-show-help
"Function for displaying help for Lisp symbols."
:group 'helm-elisp
:type '(choice (function :tag "Open help for the symbol."
helm-elisp-show-help)
(function :tag "Show one liner in modeline."
helm-elisp-show-doc-modeline)))
(defcustom helm-locate-library-fuzzy-match t
"Enable fuzzy-matching in `helm-locate-library' when non--nil."
:type 'boolean
:group 'helm-elisp)
;;; Show completion.
;;
;; Provide show completion with macro `with-helm-show-completion'.
(defvar helm-show-completion-overlay nil)
;; Called each time cursor move in helm-buffer.
(defun helm-show-completion ()
(with-helm-current-buffer
(helm-aif (helm-get-selection)
(overlay-put helm-show-completion-overlay
'display (substring-no-properties it)))))
(defun helm-show-completion-init-overlay (beg end)
(setq helm-show-completion-overlay (make-overlay beg end))
(overlay-put helm-show-completion-overlay
'face 'helm-lisp-show-completion))
(defun helm-show-completion-default-display-function (buffer &rest _args)
"A special resized Helm window is used depending on position in BUFFER."
(with-selected-window (selected-window)
(if (window-dedicated-p)
(helm-default-display-buffer buffer)
(let* ((screen-size (+ (count-screen-lines (window-start) (point) t)
1 ; mode-line
(if header-line-format 1 0))) ; header-line
(def-size (- (window-height)
helm-show-completion-min-window-height))
(upper-height (max window-min-height (min screen-size def-size)))
split-window-keep-point)
(recenter -1)
(set-window-buffer (if (active-minibuffer-window)
(minibuffer-selected-window)
(split-window nil upper-height
helm-split-window-default-side))
buffer)))))
(defmacro with-helm-show-completion (beg end &rest body)
"Show Helm candidate in an overlay at point.
BEG and END are the beginning and end position of the current
completion in `helm-current-buffer'.
BODY is an Helm call where we want to enable show completion.
If `helm-turn-on-show-completion' is nil do nothing."
(declare (indent 2) (debug t))
`(unwind-protect
(if helm-turn-on-show-completion
(let ((helm-move-selection-after-hook
(append (list 'helm-show-completion)
helm-move-selection-after-hook))
(helm-split-window-default-side
(if (eq helm-split-window-default-side 'same)
'below helm-split-window-default-side))
helm-split-window-inside-p
helm-reuse-last-window-split-state)
(helm-set-local-variable
'helm-display-function
(or helm-show-completion-display-function
'helm-default-display-buffer))
(with-helm-after-update-hook
;; Show immediately first candidate as soon as helm popup.
(helm-show-completion))
(helm-show-completion-init-overlay ,beg ,end)
,@body)
,@body)
(when (and helm-show-completion-overlay
(overlayp helm-show-completion-overlay))
(delete-overlay helm-show-completion-overlay))))
;;; Lisp symbol completion.
;;
;;
(defun helm-lisp-completion--predicate-at-point (beg)
;; Return a predicate for `all-completions'.
(let ((fn-sym-p (lambda ()
(or
(and (eq (char-before) ?\ )
(save-excursion
(skip-syntax-backward " " (pos-bol))
(memq (symbol-at-point)
helm-lisp-unquoted-function-list)))
(and (eq (char-before) ?\')
(save-excursion
(forward-char -1)
(eq (char-before) ?\#)))))))
(save-excursion
(goto-char beg)
(if (or
;; Complete on all symbols in non--lisp modes (logs mail etc..)
(not (memq major-mode '(emacs-lisp-mode
lisp-interaction-mode
inferior-emacs-lisp-mode)))
(not (or (funcall fn-sym-p)
(and (eq (char-before) ?\')
(save-excursion
(forward-char (if (funcall fn-sym-p) -2 -1))
(skip-syntax-backward " " (pos-bol))
(memq (symbol-at-point)
helm-lisp-quoted-function-list)))
(eq (char-before) ?\())) ; no paren before str.
;; Looks like we are in a let statement.
(condition-case nil
(progn (up-list -2) (forward-char 1)
(eq (char-after) ?\())
(error nil)))
(lambda (sym)
(or (boundp sym) (fboundp sym) (symbol-plist sym)))
#'fboundp))))
(defun helm-thing-before-point (&optional limits regexp)
"Return symbol name before point.
If REGEXP is specified return what REGEXP find before point.
By default match the beginning of symbol before point.
With LIMITS arg specified return the beginning and end position
of symbol before point."
(save-excursion
(let (beg
(end (point))
(boundary (field-beginning nil nil (pos-bol))))
(if (re-search-backward (or regexp "\\_<") boundary t)
(setq beg (match-end 0))
(setq beg boundary))
(unless (= beg end)
(if limits
(cons beg end)
(buffer-substring-no-properties beg end))))))
(defun helm-bounds-of-thing-before-point (&optional regexp)
"Get the beginning and end position of `helm-thing-before-point'.
Return a cons (beg . end)."
(helm-thing-before-point 'limits regexp))
(defun helm-insert-completion-at-point (beg end str)
;; When there is no space after point
;; we are completing inside a symbol or
;; after a partial symbol with the next arg aside
;; without space, in this case mark the region.
;; deleting it would remove the
;; next arg which is unwanted.
(delete-region beg end)
(insert str)
(let ((pos (cdr (or (bounds-of-thing-at-point 'symbol)
;; needed for helm-dabbrev.
(bounds-of-thing-at-point 'filename)))))
(when (and pos (< (point) pos))
(push-mark pos t t))))
;;;###autoload
(defun helm-lisp-completion-at-point ()
"Preconfigured Helm for Lisp symbol completion at point."
(interactive)
(let* ((target (helm-thing-before-point))
(beg (car (helm-bounds-of-thing-before-point)))
(end (point))
(pred (and beg (helm-lisp-completion--predicate-at-point beg)))
(loc-vars (and (fboundp 'elisp--local-variables)
(ignore-errors
(mapcar #'symbol-name (elisp--local-variables)))))
(glob-syms (and target pred (all-completions target obarray pred)))
(candidates (append loc-vars glob-syms))
(helm-quit-if-no-candidate t)
(helm-execute-action-at-once-if-one t)
(enable-recursive-minibuffers t))
(if candidates
(with-helm-show-completion beg end
;; Overlay is initialized now in helm-current-buffer.
(helm
:sources (helm-build-in-buffer-source "Lisp completion"
:data candidates
:persistent-action `(helm-lisp-completion-persistent-action .
,(and (eq helm-elisp-help-function
'helm-elisp-show-doc-modeline)
'never-split))
:nomark t
:match-part (lambda (c) (car (split-string c)))
:fuzzy-match helm-lisp-fuzzy-completion
:persistent-help (helm-lisp-completion-persistent-help)
:filtered-candidate-transformer
#'helm-lisp-completion-transformer
:action (lambda (candidate)
(with-helm-current-buffer
(run-with-timer
0.01 nil
#'helm-insert-completion-at-point
beg end candidate))))
:input (if helm-lisp-fuzzy-completion
target (concat target " "))
:resume 'noresume
:truncate-lines t
:buffer "*helm lisp completion*"
:allow-nest t))
(message "[No Match]"))))
(defun helm-lisp-completion-persistent-action (candidate &optional name)
"Show documentation for the function.
Documentation is shown briefly in mode-line or completely in
other window according to the value of
`helm-elisp-help-function'."
(funcall helm-elisp-help-function candidate name))
(defun helm-lisp-completion-persistent-help ()
"Return persistent-help according to the value of `helm-elisp-help-function'"
(cl-ecase helm-elisp-help-function
(helm-elisp-show-doc-modeline "Show brief doc in mode-line")
(helm-elisp-show-help "Toggle show help for the symbol")))
(defun helm-elisp--show-help-1 (candidate &optional name)
(helm-acase (intern-soft candidate)
((guard (and (fboundp it) (boundp it)))
(if (member name `(,helm-describe-function-function
,helm-describe-variable-function))
(funcall (intern (format "helm-%s" name)) it)
;; When there is no way to know what to describe
;; prefer describe-function.
(helm-describe-function it)))
((guard (fboundp it)) (helm-describe-function it))
((guard (boundp it)) (helm-describe-variable it))
((guard (facep it)) (helm-describe-face it))))
(defun helm-elisp-show-help (candidate &optional name)
"Show full help for the function CANDIDATE.
Arg NAME specifies the name of the top level function calling
Helm generic completion (e.g., \"describe-function\") which
allows calling the right function when CANDIDATE symbol refers at
the same time to variable and a function."
(helm-elisp--persistent-help
candidate 'helm-elisp--show-help-1 name))
(defun helm-elisp-show-doc-modeline (candidate &optional name)
"Show brief documentation for the function in the mode-line."
(let ((cursor-in-echo-area t)
mode-line-in-non-selected-windows)
(helm-show-info-in-mode-line
(propertize
(helm-get-first-line-documentation
(intern candidate) name)
'face 'helm-lisp-completion-info))))
(defun helm-lisp-completion-transformer (candidates _source)
"Helm candidates transformer for Lisp completion."
(cl-loop for c in candidates
for sym = (intern c)
for annot = (helm-acase sym
((guard (commandp it)) " (Com)")
((guard (class-p it)) " (Class)")
((guard (cl-generic-p it)) " (Gen)")
((guard (fboundp it)) " (Fun)")
((guard (boundp it)) " (Var)")
((guard (facep it)) " (Face)"))
collect (cons (concat c (helm-make-separator c) annot) c) into lst
finally return (sort lst #'helm-generic-sort-fn)))
;;;###autoload
(cl-defun helm-get-first-line-documentation (sym &optional
(name "describe-function")
(end-column 72))
"Return first line documentation of symbol SYM truncated at END-COLUMN.
If SYM is not documented, return \"Not documented\".
Argument NAME allows specifiying what function to use to display
documentation when SYM name is the same for function and variable."
(let ((doc (condition-case _err
(helm-acase sym
((guard (class-p it))
(cl--class-docstring (cl--find-class it)))
((guard (and (fboundp it) (boundp it)))
(if (string= name "describe-variable")
(documentation-property it 'variable-documentation t)
(documentation it t)))
((guard (custom-theme-p it))
(documentation-property it 'theme-documentation t))
((guard (and (helm-group-p it) (not (fboundp it))))
(documentation-property it 'group-documentation t))
((guard (fboundp it))
(documentation it t))
((guard (boundp it))
(documentation-property it 'variable-documentation t))
((guard (facep it)) (face-documentation it)))
(void-function "Void function -- Not documented"))))
(if (and doc (not (string= doc ""))
;; `documentation' return "\n\n(args...)"
;; for CL-style functions.
(not (string-match-p "\\`\n\n" doc)))
;; Some commands specify key bindings or keymap in their first line,
;; e.g.: "\<hexl-mode-map>A mode for editing binary [...]. As a result
;; (substitute-command-keys doc) returns a string like "\nUses
;; keymap...\nFirst line docstring. See
;; <https://debbugs.gnu.org/70163>.
(truncate-string-to-width
(helm-acase (split-string (substitute-command-keys doc) "\n")
((guard (and (string= (car it) "") (cdr it)))
(cadr guard))
(t (car it)))
end-column nil nil t)
(if (or (symbol-function sym) (boundp sym) (facep sym) (helm-group-p sym))
"Not documented"
;; Symbol exist but has no definition yet e.g.
;; (advice-add 'foo-test :override (lambda () (message "invalid
;; function"))) and foo-test is not already defined.
"Not already defined or loaded"))))
;;; File completion.
;;
;; Complete file name at point.
;;;###autoload
(defun helm-complete-file-name-at-point (&optional force)
"Preconfigured Helm to complete file name at point."
(interactive)
(require 'helm-mode)
(let* ((tap (or (thing-at-point 'filename t) ""))
beg
(init (and tap
(or force
(save-excursion
(end-of-line)
(search-backward tap (pos-bol) t)
(setq beg (point))
(looking-back "[^'`( ]" (1- (point)))))
(expand-file-name tap)))
(end (point))
(helm-quit-if-no-candidate t)
(helm-execute-action-at-once-if-one t)
completion)
(with-helm-show-completion beg end
(setq completion (helm-read-file-name "FileName: "
:initial-input init)))
(when (and completion (not (string= completion "")))
(delete-region beg end) (insert (if (string-match "^~" tap)
(abbreviate-file-name completion)
completion)))))
(make-obsolete 'helm-complete-file-name-at-point 'helm-find-files "3.9.6")
;;;###autoload
(defun helm-lisp-indent ()
;; It is meant to use with `helm-define-multi-key' which
;; does not support args for functions yet, so use `current-prefix-arg'
;; for now instead of (interactive "P").
(interactive)
(let ((tab-always-indent (or (eq tab-always-indent 'complete)
tab-always-indent)))
(indent-for-tab-command current-prefix-arg)))
;;; Apropos
;;
;;
(defvar helm-apropos-history nil)
(defcustom helm-apropos-show-short-doc nil
"Show short docstring of symbols when non nil.
NOTE: When displaying helm-apropos in a frame, i.e. when
`helm-apropos' is member of `helm-commands-using-frame' setting this
to non nil have no effect, you have first to remove `helm-apropos'
from `helm-commands-using-frame'."
:group 'helm-elisp
:type 'boolean)
(defvar helm-apropos-map
(let ((map (make-sparse-keymap)))
(set-keymap-parent map helm-map)
(define-key map (kbd "C-]") #'helm-apropos-toggle-details)
map))
(defun helm-apropos-init (test default &optional fn)
"Setup `helm-candidate-buffer' for `helm-apropos' sources.
A list of symbols fetched with FN is inserted in
`helm-candidate-buffer', if FN is not provided symbols are fetched
against obarray with predicate TEST. When FN is provided predicate TEST
is only used to test DEFAULT."
(require 'helm-help)
(helm-init-candidates-in-buffer 'global
(let ((default-symbol (and (stringp default)
(intern-soft default)))
(symbols (if fn (funcall fn) (all-completions "" obarray test))))
(if (and default-symbol (funcall test default-symbol))
(cons default-symbol symbols)
symbols))))
(defun helm-apropos-short-doc-transformer (candidates _source)
(if helm-apropos-show-short-doc
(cl-loop for cand in candidates
for doc = (helm-get-first-line-documentation (intern-soft cand))
collect (cons (format "%s%s%s"
cand
(if doc
(helm-make-separator cand)
"")
(if doc
(propertize
doc 'face 'helm-M-x-short-doc)
""))
cand))
candidates))
(defun helm-apropos-default-sort-fn (candidates _source)
(if (string= helm-pattern "")
candidates
(sort candidates #'helm-generic-sort-fn)))
(defun helm-apropos-clean-history-variable (candidate)
(with-helm-current-buffer ; var is maybe local
(let* ((sym (intern-soft candidate))
(cands (symbol-value sym))
(mkds (and (listp cands)
(helm-comp-read "Delete entry: "
cands :marked-candidates t))))
(cl-assert (listp mkds) nil "Variable value is not a list")
(cl-loop for elm in mkds do
(if (local-variable-p sym)
(set (make-local-variable sym)
(setq cands (delete elm cands)))
(set sym (setq cands (delete elm cands))))))))
(defun helm-apropos-clean-ring (candidate)
(with-helm-current-buffer ; var is maybe local
(let* ((sym (intern-soft candidate))
(val (symbol-value sym))
(cands (and (ring-p val) (ring-elements val)))
(mkds (and cands (helm-comp-read
"Delete entry: "
cands :marked-candidates t))))
(when mkds
(cl-loop for elm in mkds do
(ring-remove
val (helm-position
elm
(ring-elements val)
:test 'equal))
and do (if (local-variable-p sym)
(set (make-local-variable sym) val)
(set sym val)))))))
(defun helm-apropos-action-transformer (actions candidate)
(let* ((sym (helm-symbolify candidate))
(val (with-helm-current-buffer (symbol-value sym))))
(cond ((custom-variable-p sym)
(append
actions
(let ((standard-value (eval (car (get sym 'standard-value)) t)))
(unless (equal standard-value (symbol-value sym))
`(("Reset Variable to default value"
. ,(lambda (candidate)
(let ((sym (helm-symbolify candidate)))
(set sym standard-value)))))))
'(("Customize variable" .
(lambda (candidate)
(customize-option (helm-symbolify candidate)))))))
((and val (with-helm-current-buffer (ring-p (symbol-value sym))))
(append actions
'(("Clean ring" . helm-apropos-clean-ring))))
((and (string-match-p "history" candidate) (listp val))
(append actions
'(("Clean variable" .
helm-apropos-clean-history-variable))))
(t actions))))
(defun helm-def-source--emacs-variables (&optional default)
(helm-build-in-buffer-source "Variables"
:init (lambda ()
(helm-apropos-init
(lambda (x)
(and (boundp x) (not (keywordp x)) (not (class-p x))))
default))
:fuzzy-match helm-apropos-fuzzy-match
:filtered-candidate-transformer
(delq nil (list (and (null helm-apropos-fuzzy-match)
'helm-apropos-default-sort-fn)
(and (null (memq 'helm-apropos helm-commands-using-frame))
#'helm-apropos-short-doc-transformer)))
:nomark t
:persistent-action (lambda (candidate)
(helm-elisp--persistent-help
candidate 'helm-describe-variable))
:persistent-help "Toggle describe variable"
:keymap helm-apropos-map
:action '(("Describe variable" . helm-describe-variable)
("Find variable" . helm-find-variable)
("Info lookup" . helm-info-lookup-symbol)
("Set variable" . helm-set-variable))
:action-transformer 'helm-apropos-action-transformer))
(defun helm-def-source--emacs-faces (&optional default)
"Create `helm' source for faces to be displayed with
`helm-apropos'."
(helm-build-in-buffer-source "Faces"
:init (lambda () (helm-apropos-init 'facep default #'face-list))
:fuzzy-match helm-apropos-fuzzy-match
:filtered-candidate-transformer
(delq nil (list
(and (null helm-apropos-fuzzy-match)
#'helm-apropos-default-sort-fn)
(lambda (candidates _source)
(cl-loop for c in candidates
collect (propertize c 'face (intern c))))
(and (null (memq 'helm-apropos helm-commands-using-frame))
#'helm-apropos-short-doc-transformer)))
:persistent-action (lambda (candidate)
(helm-elisp--persistent-help
candidate 'helm-describe-face))
:persistent-help "Toggle describe face"
:keymap helm-apropos-map
:action '(("Describe face" . helm-describe-face)
("Find face" . helm-find-face-definition)
("Customize face" . (lambda (candidate)
(customize-face (helm-symbolify candidate)))))))
(defun helm-def-source--emacs-commands (&optional default)
(require 'helm-command)
(helm-build-in-buffer-source "Commands"
:init (lambda ()
(helm-apropos-init 'commandp default))
:fuzzy-match helm-apropos-fuzzy-match
:filtered-candidate-transformer
(append (list #'helm-M-x-transformer-no-sort-no-props)
(and (null helm-apropos-fuzzy-match)
'(helm-apropos-default-sort-fn)))
:display-to-real 'helm-symbolify
:nomark t
:persistent-action (lambda (candidate)
(helm-elisp--persistent-help
candidate 'helm-describe-function))
:persistent-help "Toggle describe command"
:keymap helm-apropos-map
:action 'helm-type-function-actions))
(defun helm-def-source--emacs-functions (&optional default)
(helm-build-in-buffer-source "Functions"
:init (lambda ()
(helm-apropos-init (lambda (x)
(and (fboundp x)
(not (commandp x))
(not (cl-generic-p x))
(not (class-p x))))
default))
:fuzzy-match helm-apropos-fuzzy-match
:filtered-candidate-transformer
(delq nil (list (and (null helm-apropos-fuzzy-match)
'helm-apropos-default-sort-fn)
(and (null (memq 'helm-apropos helm-commands-using-frame))
#'helm-apropos-short-doc-transformer)))
:display-to-real 'helm-symbolify
:persistent-action (lambda (candidate)
(helm-elisp--persistent-help
candidate 'helm-describe-function))
:persistent-help "Toggle describe function"
:keymap helm-apropos-map
:nomark t
:action 'helm-type-function-actions))
(defun helm-def-source--eieio-classes (&optional default)
(helm-build-in-buffer-source "Classes"
:init (lambda ()
(helm-apropos-init (lambda (x)
(class-p x))
default))
:fuzzy-match helm-apropos-fuzzy-match
:filtered-candidate-transformer
(delq nil (list (and (null helm-apropos-fuzzy-match)
'helm-apropos-default-sort-fn)
(and (null (memq 'helm-apropos helm-commands-using-frame))
#'helm-apropos-short-doc-transformer)))
:nomark t
:persistent-action (lambda (candidate)
(helm-elisp--persistent-help
candidate 'helm-describe-class))
:persistent-help "Toggle describe class"
:keymap helm-apropos-map
:action '(("Describe Class" . helm-describe-class)
("Find Class (C-u for source)" . helm-find-function)
("Info lookup" . helm-info-lookup-symbol))))
(defun helm-def-source--eieio-generic (&optional default)
(helm-build-in-buffer-source "Generic functions"
:init (lambda ()
(helm-apropos-init (lambda (x)
(cl-generic-p x))
default))
:fuzzy-match helm-apropos-fuzzy-match
:filtered-candidate-transformer
(delq nil (list (and (null helm-apropos-fuzzy-match)
'helm-apropos-default-sort-fn)
(and (null (memq 'helm-apropos helm-commands-using-frame))
#'helm-apropos-short-doc-transformer)))
:nomark t
:persistent-action (lambda (candidate)
(helm-elisp--persistent-help
candidate 'helm-describe-function))
:persistent-help "Toggle describe generic function"
:keymap helm-apropos-map
:action '(("Describe function" . helm-describe-function)
("Find function (C-u for source)" . helm-find-function)
("Info lookup" . helm-info-lookup-symbol))))
(defun helm-info-lookup-fallback-source (candidate)
(cl-multiple-value-bind (fn src-name)
(helm-acase (helm-symbolify candidate)
((guard (class-p it))
(list #'helm-describe-function
"Describe class"))
((guard (cl-generic-p it))
(list #'helm-describe-function
"Describe generic function"))
((guard (fboundp it))
(list #'helm-describe-function
"Describe function"))
((guard (facep it))
(list #'helm-describe-face
"Describe face"))
(t
(list #'helm-describe-variable
"Describe variable")))
(helm-build-sync-source src-name
:candidates (list candidate)
:persistent-action (lambda (candidate)
(helm-elisp--persistent-help
candidate fn))
:persistent-help src-name
:nomark t
:action fn)))
(defun helm-info-lookup-symbol-1 (c)
(let ((helm-execute-action-at-once-if-one 'current-source))
(helm :sources (append helm-apropos-defaut-info-lookup-sources
(list (helm-info-lookup-fallback-source c)))
:resume 'noresume
:buffer "*helm lookup*"
:input (helm-stringify c))))
(defun helm-info-lookup-symbol (candidate)
;; ???:Running an idle-timer allows not catching RET when exiting
;; with the fallback source.
;; (run-with-idle-timer 0.01 nil #'helm-info-lookup-symbol-1 candidate)
(helm-info-lookup-symbol-1 candidate))
(defun helm-apropos-toggle-details ()
"Toggle details in `helm-apropos'."
(interactive)
(with-helm-buffer
(unless (memq 'helm-apropos helm-commands-using-frame)
(setq helm-M-x-show-short-doc (not helm-M-x-show-short-doc)
helm-apropos-show-short-doc (not helm-apropos-show-short-doc))
(helm-force-update (concat "^" (helm-stringify (helm-get-selection)))
(helm-get-current-source)))))
(defun helm-apropos-get-default ()
(with-syntax-table emacs-lisp-mode-syntax-table
(symbol-name (intern-soft (thing-at-point 'symbol)))))
;;;###autoload
(defun helm-apropos (default)
"Preconfigured Helm to describe commands, functions, variables and faces.
In non interactives calls DEFAULT argument should be provided as
a string, i.e. the `symbol-name' of any existing symbol."
(interactive (list (helm-apropos-get-default)))
(let ((helm-M-x-show-short-doc
(and helm-apropos-show-short-doc
(null (memq 'helm-apropos helm-commands-using-frame)))))
(helm :sources
(mapcar (lambda (func)
(funcall func default))
helm-apropos-function-list)
:history 'helm-apropos-history
:buffer "*helm apropos*"
:preselect (and default (concat "^\\_<" (regexp-quote default) "\\_>"))
:truncate-lines t)))
;;; Advices
;;
;;
(defvar ad-advised-functions)
(defvar ad-advice-classes)
(declare-function ad-make-single-advice-docstring "advice")
(declare-function ad-get-advice-info-field "advice")
(declare-function ad-advice-set-enabled "advice")
(declare-function ad-advice-set-enabled "advice")
(declare-function ad-advice-enabled "advice")
(defvar helm-source-advice
(helm-build-sync-source "Function Advice"
:init (lambda () (require 'advice))
:candidates 'helm-advice-candidates
:action (helm-make-actions "Toggle Enable/Disable" 'helm-advice-toggle)
:persistent-action 'helm-advice-persistent-action
:nomark t
:multiline t
:persistent-help "Toggle describe function / C-u C-j: Toggle advice"))
(defun helm-advice-candidates ()
(cl-loop for fname in ad-advised-functions
for function = (intern fname)
append
(cl-loop for class in ad-advice-classes append
(cl-loop for advice in (ad-get-advice-info-field function class)
for enabled = (ad-advice-enabled advice)
collect
(cons (format
"%s %s %s"
(if enabled "Enabled " "Disabled")
(propertize fname 'face 'font-lock-function-name-face)
(ad-make-single-advice-docstring advice class nil))
(list function class advice))))))
(defun helm-advice-persistent-action (func-class-advice)
(if current-prefix-arg
(helm-advice-toggle func-class-advice)
(describe-function (car func-class-advice))))
(defun helm-advice-toggle (func-class-advice)
(cl-destructuring-bind (function _class advice) func-class-advice
(cond ((ad-advice-enabled advice)
(ad-advice-set-enabled advice nil)
(message "Disabled"))
(t
(ad-advice-set-enabled advice t)
(message "Enabled")))
(ad-activate function)
(and helm-in-persistent-action
(helm-advice-update-current-display-string))))
(defun helm-advice-update-current-display-string ()
(helm-edit-current-selection
(let ((newword (cond ((looking-at "Disabled") "Enabled")
((looking-at "Enabled") "Disabled"))))
(when newword
(delete-region (point) (progn (forward-word 1) (point)))
(insert newword)))))
;;;###autoload
(defun helm-manage-advice ()
"Preconfigured `helm' to disable/enable function advices."
(interactive)
(helm-other-buffer 'helm-source-advice "*helm advice*"))
;;; Locate elisp library
;;
;;
(defvar helm--locate-library-cache nil)
(defvar helm--locate-library-doc-cache (make-hash-table :test 'equal))
(defun helm-locate-library-scan-list ()
(cl-loop for dir in load-path
when (file-directory-p dir)
nconc (directory-files
dir nil (concat (regexp-opt (find-library-suffixes)) "\\'"))))
;;;###autoload
(defun helm-locate-library (&optional arg)
"Preconfigured helm to locate elisp libraries.
When `completions-detailed' or `helm-completions-detailed' is non
nil, a description of libraries is provided. The libraries are
partially cached in the variables
`helm--locate-library-doc-cache' and
`helm--locate-library-cache'. TIP: You can make these vars
persistent for faster start with the psession package, using M-x
psession-make-persistent-variable. NOTE: The caches affect as
well `find-libray' and `locate-library' when `helm-mode' is
enabled and `completions-detailed' is non nil. There is no need
to refresh the caches, they will be updated automatically if some
new libraries are found, however when a library update its
headers and the description change you can reset the caches with
a prefix arg."
(interactive "P")
(let (done)
(when arg
(setq helm--locate-library-cache nil)
(clrhash helm--locate-library-doc-cache))
(helm :sources
(helm-build-in-buffer-source "Elisp libraries (Scan)"
:data #'helm-locate-library-scan-list
:fuzzy-match helm-locate-library-fuzzy-match
:keymap helm-generic-files-map
:candidate-transformer
(lambda (candidates)
(cl-loop with reporter = (unless done
(make-progress-reporter
"Scanning libraries..." 0 (length candidates)))
with lgst = (helm-in-buffer-get-longest-candidate)
for c in candidates
for count from 0
for bn = (helm-basename c 2)
for sep = (helm-make-separator bn lgst)
for path = (or (assoc-default bn helm--locate-library-cache)
;; A lock file in LOAD-PATH (bug#2626).
(unless (string-match "\\`\\.#" bn)
(let ((p (find-library-name bn)))
(push (cons bn p) helm--locate-library-cache)
p)))
for doc = (and path
(or completions-detailed helm-completions-detailed)
(or (gethash bn helm--locate-library-doc-cache)
(puthash bn (helm-locate-lib-get-summary path)
helm--locate-library-doc-cache)))
for disp = (and path
(if (and doc
(or completions-detailed helm-completions-detailed))
(helm-aand (propertize doc 'face 'font-lock-warning-face)
(propertize " " 'display (concat sep it))
(concat bn it))
bn))
when (and disp path)
collect (cons disp path)
when reporter do (progress-reporter-update reporter count)
finally do (setq done t)))
:action (helm-actions-from-type-file))
:buffer "*helm locate library*")))
;;; Modify variables from Helm
;;
;;
(defun helm-set-variable (var)
"Set VAR value interactively."
(let* ((sym (helm-symbolify var))
(val (default-value sym))
(strv (prin1-to-string val)))
(if (> (length strv) 25)
(helm-edit-variable var)
(set-default sym (eval-minibuffer
(format "Set `%s': " var)
(if (or (arrayp val)
(memq val '(nil t))
(numberp val))
strv
(format "'%s" strv)))))))
(defvar helm-edit-variable-mode-map
(let ((map (make-sparse-keymap)))
(define-key map (kbd "C-c C-c") 'helm-set-variable-from-pp-buffer)
(define-key map (kbd "C-c C-k") 'helm-edit-variable-quit)
(define-key map (kbd "C-c =") 'helm-edit-variable-toggle-diff)
map))
(define-derived-mode helm-edit-variable-mode
emacs-lisp-mode "helm-edit-variable"
"A mode to edit variables values.
Special commands:
\\{helm-edit-variable-mode-map}")
(defvar helm-pretty-print-temp-file-name
(expand-file-name "helm-edit-variable.el" temporary-file-directory))
(defvar helm-pretty-print-buffer-name "*pretty print output*")
(defvar helm-pretty-print-current-symbol nil)
(defun helm-edit-variable (var)