emacs-orgmode@gnu.org archives
 help / color / mirror / code / Atom feed
blob d605fb7525101199122ef2db9208641c56fc3f09 31837 bytes (raw)
name: lisp/org-src.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
 
;;; org-src.el --- Source code examples in Org
;;
;; Copyright (C) 2004-2011 Free Software Foundation, Inc.
;;
;; Author: Carsten Dominik <carsten at orgmode dot org>
;;	   Bastien Guerry <bzg AT gnu DOT org>
;;         Dan Davison <davison at stats dot ox dot ac dot uk>
;; Keywords: outlines, hypermedia, calendar, wp
;; Homepage: http://orgmode.org
;;
;; This file is part of GNU Emacs.
;;
;; GNU Emacs 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.

;; GNU Emacs 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:

;; This file contains the code dealing with source code examples in Org-mode.

;;; Code:

(require 'org-macs)
(require 'org-compat)
(require 'ob-keys)
(require 'ob-comint)
(eval-when-compile
  (require 'cl))

(declare-function org-do-remove-indentation "org" (&optional n))
(declare-function org-at-table.el-p "org" ())
(declare-function org-get-indentation "org" (&optional line))
(declare-function org-switch-to-buffer-other-window "org" (&rest args))
(declare-function org-pop-to-buffer-same-window 
		  "org-compat" (&optional buffer-or-name norecord label))

(defcustom org-edit-src-region-extra nil
  "Additional regexps to identify regions for editing with `org-edit-src-code'.
For examples see the function `org-edit-src-find-region-and-lang'.
The regular expression identifying the begin marker should end with a newline,
and the regexp marking the end line should start with a newline, to make sure
there are kept outside the narrowed region."
  :group 'org-edit-structure
  :type '(repeat
	  (list
	   (regexp :tag "begin regexp")
	   (regexp :tag "end regexp")
	   (choice :tag "language"
		   (string :tag "specify")
		   (integer :tag "from match group")
		   (const :tag "from `lang' element")
		   (const :tag "from `style' element")))))

(defcustom org-coderef-label-format "(ref:%s)"
  "The default coderef format.
This format string will be used to search for coderef labels in literal
examples (EXAMPLE and SRC blocks).  The format can be overwritten in
an individual literal example with the -l option, like

#+BEGIN_SRC pascal +n -r -l \"((%s))\"
...
#+END_SRC

If you want to use this for HTML export, make sure that the format does
not introduce special font-locking, and avoid the HTML special
characters `<', `>', and `&'.  The reason for this restriction is that
the labels are searched for only after htmlize has done its job."
  :group 'org-edit-structure ; FIXME this is not in the right group
  :type 'string)

(defcustom org-edit-fixed-width-region-mode 'artist-mode
  "The mode that should be used to edit fixed-width regions.
These are the regions where each line starts with a colon."
  :group 'org-edit-structure
  :type '(choice
	  (const artist-mode)
	  (const picture-mode)
	  (const fundamental-mode)
	  (function :tag "Other (specify)")))

(defcustom org-src-preserve-indentation nil
  "If non-nil preserve leading whitespace characters on export.
If non-nil leading whitespace characters in source code blocks
are preserved on export, and when switching between the org
buffer and the language mode edit buffer.  If this variable is nil
then, after editing with \\[org-edit-src-code], the
minimum (across-lines) number of leading whitespace characters
are removed from all lines, and the code block is uniformly
indented according to the value of `org-edit-src-content-indentation'."
  :group 'org-edit-structure
  :type 'boolean)

(defcustom org-edit-src-content-indentation 2
  "Indentation for the content of a source code block.
This should be the number of spaces added to the indentation of the #+begin
line in order to compute the indentation of the block content after
editing it with \\[org-edit-src-code].  Has no effect if
`org-src-preserve-indentation' is non-nil."
  :group 'org-edit-structure
  :type 'integer)

(defvar org-src-strip-leading-and-trailing-blank-lines nil
  "If non-nil, blank lines are removed when exiting the code edit
buffer.")

(defcustom org-edit-src-persistent-message t
  "Non-nil means show persistent exit help message while editing src examples.
The message is shown in the header-line, which will be created in the
first line of the window showing the editing buffer."
  :group 'org-edit-structure
  :type 'boolean)

(defcustom org-src-window-setup 'reorganize-frame
  "How the source code edit buffer should be displayed.
Possible values for this option are:

current-window    Show edit buffer in the current window, keeping all other
                  windows.
other-window      Use `switch-to-buffer-other-window' to display edit buffer.
reorganize-frame  Show only two windows on the current frame, the current
                  window and the edit buffer. When exiting the edit buffer,
                  return to one window.
other-frame       Use `switch-to-buffer-other-frame' to display edit buffer.
                  Also, when exiting the edit buffer, kill that frame."
  :group 'org-edit-structure
  :type '(choice
	  (const current-window)
	  (const other-frame)
	  (const other-window)
	  (const reorganize-frame)))

(defvar org-src-mode-hook nil
  "Hook  run after Org switched a source code snippet to its Emacs mode.
This hook will run

- when editing a source code snippet with \"C-c '\".
- When formatting a source code snippet for export with htmlize.

You may want to use this hook for example to turn off `outline-minor-mode'
or similar things which you want to have when editing a source code file,
but which mess up the display of a snippet in Org exported files.")

(defcustom org-src-lang-modes
  '(("ocaml" . tuareg) ("elisp" . emacs-lisp) ("ditaa" . artist)
    ("asymptote" . asy) ("dot" . fundamental) ("sqlite" . sql)
    ("calc" . fundamental) ("C" . c) ("cpp" . c++))
  "Alist mapping languages to their major mode.
The key is the language name, the value is the string that should
be inserted as the name of the major mode.  For many languages this is
simple, but for language where this is not the case, this variable
provides a way to simplify things on the user side.
For example, there is no ocaml-mode in Emacs, but the mode to use is
`tuareg-mode'."
  :group 'org-edit-structure
  :type '(repeat
	  (cons
	   (string "Language name")
	   (symbol "Major mode"))))

;;; Editing source examples

(defvar org-src-mode-map (make-sparse-keymap))
(define-key org-src-mode-map "\C-c'" 'org-edit-src-exit)

(defvar org-edit-src-force-single-line nil)
(defvar org-edit-src-from-org-mode nil)
(defvar org-edit-src-allow-write-back-p t)
(defvar org-edit-src-picture nil)
(defvar org-edit-src-beg-marker nil)
(defvar org-edit-src-end-marker nil)
(defvar org-edit-src-overlay nil)
(defvar org-edit-src-block-indentation nil)
(defvar org-edit-src-saved-temp-window-config nil)

(defvar org-src-ask-before-returning-to-edit-buffer t
  "If nil, when org-edit-src code is used on a block that already
  has an active edit buffer, it will switch to that edit buffer
  immediately; otherwise it will ask whether you want to return
  to the existing edit buffer.")

(defvar org-src-babel-info nil)

(define-minor-mode org-src-mode
  "Minor mode for language major mode buffers generated by org.
This minor mode is turned on in two situations:
- when editing a source code snippet with \"C-c '\".
- When formatting a source code snippet for export with htmlize.
There is a mode hook, and keybindings for `org-edit-src-exit' and
`org-edit-src-save'")

(defun org-edit-src-code (&optional context code edit-buffer-name)
  "Edit the source code example at point.
The example is copied to a separate buffer, and that buffer is
switched to the correct language mode.  When done, exit with
\\[org-edit-src-exit].  This will remove the original code in the
Org buffer, and replace it with the edited version. Optional
argument CONTEXT is used by \\[org-edit-src-save] when calling
this function. See \\[org-src-window-setup] to configure the
display of windows containing the Org buffer and the code
buffer."
  (interactive)
  (unless (eq context 'save)
    (setq org-edit-src-saved-temp-window-config (current-window-configuration)))
  (let ((mark (and (org-region-active-p) (mark)))
	(case-fold-search t)
	(info (org-edit-src-find-region-and-lang))
	(full-info (org-babel-get-src-block-info))
	(org-mode-p (derived-mode-p 'org-mode)) ;; derived-mode-p is reflexive
	(beg (make-marker))
	(end (make-marker))
	(allow-write-back-p (null code))
	block-nindent total-nindent ovl lang lang-f single lfmt buffer msg
	begline markline markcol line col transmitted-variables)
    (if (not info)
	nil
      (setq beg (move-marker beg (nth 0 info))
	    end (move-marker end (nth 1 info))
	    msg (if allow-write-back-p
		    (substitute-command-keys
		     "Edit, then exit with C-c ' (C-c and single quote)")
		  "Exit with C-c ' (C-c and single quote)")
	    code (or code (buffer-substring-no-properties beg end))
	    lang (or (cdr (assoc (nth 2 info) org-src-lang-modes))
                     (nth 2 info))
	    lang (if (symbolp lang) (symbol-name lang) lang)
	    single (nth 3 info)
	    block-nindent (nth 5 info)
	    lang-f (intern (concat lang "-mode"))
	    begline (save-excursion (goto-char beg) (org-current-line))
	    transmitted-variables
	    `((org-edit-src-content-indentation
	       ,org-edit-src-content-indentation)
	      (org-edit-src-force-single-line ,single)
	      (org-edit-src-from-org-mode ,org-mode-p)
	      (org-edit-src-allow-write-back-p ,allow-write-back-p)
	      (org-src-preserve-indentation ,org-src-preserve-indentation)
	      (org-src-babel-info ,(org-babel-get-src-block-info 'light))
	      (org-coderef-label-format
	       ,(or (nth 4 info) org-coderef-label-format))
	      (org-edit-src-beg-marker ,beg)
	      (org-edit-src-end-marker ,end)
	      (org-edit-src-block-indentation ,block-nindent)))
      (if (and mark (>= mark beg) (<= mark (1+ end)))
	  (save-excursion (goto-char (min mark end))
			  (setq markline (org-current-line)
				markcol (current-column))))
      (if (equal lang-f 'table.el-mode)
	  (setq lang-f (lambda ()
			 (text-mode)
			 (if (org-bound-and-true-p flyspell-mode)
			     (flyspell-mode -1))
			 (table-recognize)
			 (org-set-local 'org-edit-src-content-indentation 0))))
      (unless (functionp lang-f)
	(error "No such language mode: %s" lang-f))
      (save-excursion
	(if (> (point) end) (goto-char end))
	(setq line (org-current-line)
	      col (current-column)))
      (if (and (setq buffer (org-edit-src-find-buffer beg end))
	       (if org-src-ask-before-returning-to-edit-buffer
		   (y-or-n-p "Return to existing edit buffer? [n] will revert changes: ") t))
	  (org-src-switch-to-buffer buffer 'return)
	(when buffer
	  (with-current-buffer buffer
	    (if (boundp 'org-edit-src-overlay)
		(delete-overlay org-edit-src-overlay)))
	  (kill-buffer buffer))
	(setq buffer (generate-new-buffer
		      (or edit-buffer-name
			  (org-src-construct-edit-buffer-name (buffer-name) lang))))
	(setq ovl (make-overlay beg end))
	(overlay-put ovl 'edit-buffer buffer)
	(overlay-put ovl 'help-echo "Click with mouse-1 to switch to buffer editing this segment")
	(overlay-put ovl 'face 'secondary-selection)
	(overlay-put ovl
		     'keymap
		     (let ((map (make-sparse-keymap)))
		       (define-key map [mouse-1] 'org-edit-src-continue)
		       map))
	(overlay-put ovl :read-only "Leave me alone")
	(setq transmitted-variables
	      (append transmitted-variables `((org-edit-src-overlay ,ovl))))
	(org-src-switch-to-buffer buffer 'edit)
	(if (eq single 'macro-definition)
	    (setq code (replace-regexp-in-string "\\\\n" "\n" code t t)))
	(insert code)
	(remove-text-properties (point-min) (point-max)
				'(display nil invisible nil intangible nil))
	(unless (cadr (assq 'org-src-preserve-indentation transmitted-variables))
	  (setq total-nindent (or (org-do-remove-indentation) 0)))
	(let ((org-inhibit-startup t))
	  (condition-case e
	      (funcall lang-f)
	    (error
	     (error "Language mode `%s' fails with: %S" lang-f (nth 1 e)))))
	(dolist (pair transmitted-variables)
	  (org-set-local (car pair) (cadr pair)))
	(when (eq major-mode 'org-mode)
	  (goto-char (point-min))
	  (while (re-search-forward "^," nil t)
	    (if (eq (org-current-line) line) (setq total-nindent (1+ total-nindent)))
	    (replace-match "")))
	(when markline
	  (org-goto-line (1+ (- markline begline)))
	  (org-move-to-column
	   (if org-src-preserve-indentation markcol
	     (max 0 (- markcol total-nindent))))
	  (push-mark (point) 'no-message t)
	  (setq deactivate-mark nil))
	(org-goto-line (1+ (- line begline)))
	(org-move-to-column
	 (if org-src-preserve-indentation col (max 0 (- col total-nindent))))
	(org-src-mode)
	(set-buffer-modified-p nil)
	(and org-edit-src-persistent-message
	     (org-set-local 'header-line-format msg))
	(let ((edit-prep-func (intern (concat "org-babel-edit-prep:" lang))))
	  (when (fboundp edit-prep-func)
	    (funcall edit-prep-func full-info))))
      t)))

(defun org-edit-src-continue (e)
  (interactive "e")
  (mouse-set-point e)
  (let ((buf (get-char-property (point) 'edit-buffer)))
    (if buf (org-src-switch-to-buffer buf 'continue)
      (error "Something is wrong here"))))

(defun org-src-switch-to-buffer (buffer context)
  (case org-src-window-setup
    ('current-window
     (org-pop-to-buffer-same-window buffer))
    ('other-window
     (switch-to-buffer-other-window buffer))
    ('other-frame
     (case context
       ('exit
	(let ((frame (selected-frame)))
	  (switch-to-buffer-other-frame buffer)
	  (delete-frame frame)))
       ('save
	(kill-buffer (current-buffer))
	(org-pop-to-buffer-same-window buffer))
       (t
	(switch-to-buffer-other-frame buffer))))
    ('reorganize-frame
     (if (eq context 'edit) (delete-other-windows))
     (org-switch-to-buffer-other-window buffer)
     (if (eq context 'exit) (delete-other-windows)))
    ('switch-invisibly
     (set-buffer buffer))
    (t
     (message "Invalid value %s for org-src-window-setup"
	      (symbol-name org-src-window-setup))
     (org-pop-to-buffer-same-window buffer))))

(defun org-src-construct-edit-buffer-name (org-buffer-name lang)
  "Construct the buffer name for a source editing buffer."
  (concat "*Org Src " org-buffer-name "[ " lang " ]*"))

(defun org-edit-src-find-buffer (beg end)
  "Find a source editing buffer that is already editing the region BEG to END."
  (catch 'exit
    (mapc
     (lambda (b)
       (with-current-buffer b
	 (if (and (string-match "\\`*Org Src " (buffer-name))
		  (local-variable-p 'org-edit-src-beg-marker (current-buffer))
		  (local-variable-p 'org-edit-src-end-marker (current-buffer))
		  (equal beg org-edit-src-beg-marker)
		  (equal end org-edit-src-end-marker))
	     (throw 'exit (current-buffer)))))
     (buffer-list))
    nil))

(defun org-edit-fixed-width-region ()
  "Edit the fixed-width ascii drawing at point.
This must be a region where each line starts with a colon followed by
a space character.
An new buffer is created and the fixed-width region is copied into it,
and the buffer is switched into `artist-mode' for editing.  When done,
exit with \\[org-edit-src-exit].  The edited text will then replace
the fragment in the Org-mode buffer."
  (interactive)
  (let ((line (org-current-line))
	(col (current-column))
	(case-fold-search t)
	(msg (substitute-command-keys
	      "Edit, then exit with C-c ' (C-c and single quote)"))
	(org-mode-p (eq major-mode 'org-mode))
	(beg (make-marker))
	(end (make-marker))
	(preserve-indentation org-src-preserve-indentation)
	block-nindent ovl beg1 end1 code begline buffer)
    (beginning-of-line 1)
    (if (looking-at "[ \t]*[^:\n \t]")
	nil
      (if (looking-at "[ \t]*\\(\n\\|\\'\\)")
	  (setq beg1 (point) end1 beg1)
	(save-excursion
	  (if (re-search-backward "^[ \t]*[^: \t]" nil 'move)
	      (setq beg1 (point-at-bol 2))
	    (setq beg1 (point))))
	(save-excursion
	  (if (re-search-forward "^[ \t]*[^: \t]" nil 'move)
	      (setq end1 (1- (match-beginning 0)))
	    (setq end1 (point))))
	(org-goto-line line))
      (setq beg (move-marker beg beg1)
	    end (move-marker end end1)
	    code (buffer-substring-no-properties beg end)
	    begline (save-excursion (goto-char beg) (org-current-line)))
      (if (and (setq buffer (org-edit-src-find-buffer beg end))
	       (y-or-n-p "Return to existing edit buffer? [n] will revert changes: "))
	  (org-pop-to-buffer-same-window buffer)
	(when buffer
	  (with-current-buffer buffer
	    (if (boundp 'org-edit-src-overlay)
		(delete-overlay org-edit-src-overlay)))
	  (kill-buffer buffer))
	(setq buffer (generate-new-buffer
		      (org-src-construct-edit-buffer-name
		       (buffer-name) "Fixed Width")))
	(setq ovl (make-overlay beg end))
	(overlay-put ovl 'face 'secondary-selection)
	(overlay-put ovl 'edit-buffer buffer)
	(overlay-put ovl 'help-echo "Click with mouse-1 to switch to buffer editing this segment")
	(overlay-put ovl 'face 'secondary-selection)
	(overlay-put ovl
			 'keymap
			 (let ((map (make-sparse-keymap)))
			   (define-key map [mouse-1] 'org-edit-src-continue)
			   map))
	(overlay-put ovl :read-only "Leave me alone")
	(org-pop-to-buffer-same-window buffer)
	(insert code)
	(remove-text-properties (point-min) (point-max)
				'(display nil invisible nil intangible nil))
	(setq block-nindent (or (org-do-remove-indentation) 0))
	(cond
	 ((eq org-edit-fixed-width-region-mode 'artist-mode)
	  (fundamental-mode)
	  (artist-mode 1))
	 (t (funcall org-edit-fixed-width-region-mode)))
	(set (make-local-variable 'org-edit-src-force-single-line) nil)
	(set (make-local-variable 'org-edit-src-from-org-mode) org-mode-p)
	(set (make-local-variable 'org-edit-src-picture) t)
	(goto-char (point-min))
	(while (re-search-forward "^[ \t]*: ?" nil t)
	  (replace-match ""))
	(org-goto-line (1+ (- line begline)))
	(org-move-to-column (max 0 (- col block-nindent 2)))
	(org-set-local 'org-edit-src-beg-marker beg)
	(org-set-local 'org-edit-src-end-marker end)
	(org-set-local 'org-edit-src-overlay ovl)
	(org-set-local 'org-edit-src-block-indentation block-nindent)
	(org-set-local 'org-edit-src-content-indentation 0)
	(org-set-local 'org-src-preserve-indentation nil)
	(org-src-mode)
	(set-buffer-modified-p nil)
	(and org-edit-src-persistent-message
	     (org-set-local 'header-line-format msg)))
      (message "%s" msg)
      t)))

(defun org-edit-src-find-region-and-lang ()
  "Find the region and language for a local edit.
Return a list with beginning and end of the region, a string representing
the language, a switch telling if the content should be in a single line."
  (let ((re-list
	 (append
	  org-edit-src-region-extra
	  '(
	    ("<src\\>[^<]*>[ \t]*\n?" "\n?[ \t]*</src>" lang)
	    ("<literal\\>[^<]*>[ \t]*\n?" "\n?[ \t]*</literal>" style)
	    ("<example>[ \t]*\n?" "\n?[ \t]*</example>" "fundamental")
	    ("<lisp>[ \t]*\n?" "\n?[ \t]*</lisp>" "emacs-lisp")
	    ("<perl>[ \t]*\n?" "\n?[ \t]*</perl>" "perl")
	    ("<python>[ \t]*\n?" "\n?[ \t]*</python>" "python")
	    ("<ruby>[ \t]*\n?" "\n?[ \t]*</ruby>" "ruby")
	    ("^[ \t]*#\\+begin_src\\( \\([^ \t\n]+\\)\\)?.*\n" "\n[ \t]*#\\+end_src" 2)
	    ("^[ \t]*#\\+begin_example.*\n" "\n[ \t]*#\\+end_example" "fundamental")
	    ("^[ \t]*#\\+html:" "\n" "html" single-line)
	    ("^[ \t]*#\\+begin_html.*\n" "\n[ \t]*#\\+end_html" "html")
	    ("^[ \t]*#\\+latex:" "\n" "latex" single-line)
	    ("^[ \t]*#\\+begin_latex.*\n" "\n[ \t]*#\\+end_latex" "latex")
	    ("^[ \t]*#\\+ascii:" "\n" "fundamental" single-line)
	    ("^[ \t]*#\\+begin_ascii.*\n" "\n[ \t]*#\\+end_ascii" "fundamental")
	    ("^[ \t]*#\\+docbook:" "\n" "xml" single-line)
	    ("^[ \t]*#\\+macro:[ \t]+\\S-+\\( \\|$\\)"
	     "\n" "fundamental" macro-definition)
	    ("^[ \t]*#\\+begin_docbook.*\n" "\n[ \t]*#\\+end_docbook" "xml")
	    )))
	(pos (point))
	re1 re2 single beg end lang lfmt match-re1 ind entry)
    (catch 'exit
      (while (setq entry (pop re-list))
	(setq re1 (car entry) re2 (nth 1 entry) lang (nth 2 entry)
	      single (nth 3 entry))
	(save-excursion
	  (if (or (looking-at re1)
		  (re-search-backward re1 nil t))
	      (progn
		(setq match-re1 (match-string 0))
		(setq beg (match-end 0)
		      lang (org-edit-src-get-lang lang)
		      lfmt (org-edit-src-get-label-format match-re1)
		      ind (org-edit-src-get-indentation (match-beginning 0)))
		(if (and (re-search-forward re2 nil t)
			 (>= (match-end 0) pos))
		    (throw 'exit (list beg (match-beginning 0)
				       lang single lfmt ind))))
	    (if (or (looking-at re2)
		    (re-search-forward re2 nil t))
		(progn
		  (setq end (match-beginning 0))
		  (if (and (re-search-backward re1 nil t)
			   (<= (match-beginning 0) pos))
		      (progn
			(setq lfmt (org-edit-src-get-label-format
				    (match-string 0))
			      ind (org-edit-src-get-indentation
				   (match-beginning 0)))
			(throw 'exit
			       (list (match-end 0) end
				     (org-edit-src-get-lang lang)
				     single lfmt ind)))))))))
      (when (org-at-table.el-p)
	(re-search-backward "^[\t]*[^ \t|\\+]" nil t)
	(setq beg (1+ (point-at-eol)))
	(goto-char beg)
	(or (re-search-forward "^[\t]*[^ \t|\\+]" nil t)
	    (progn (goto-char (point-max)) (newline)))
	(setq end (point-at-bol))
	(setq ind (org-edit-src-get-indentation beg))
	(throw 'exit (list beg end 'table.el nil nil ind))))))

(defun org-edit-src-get-lang (lang)
  "Extract the src language."
  (let ((m (match-string 0)))
    (cond
     ((stringp lang) lang)
     ((integerp lang) (match-string lang))
     ((and (eq lang 'lang)
	   (string-match "\\<lang=\"\\([^ \t\n\"]+\\)\"" m))
      (match-string 1 m))
     ((and (eq lang 'style)
	   (string-match "\\<style=\"\\([^ \t\n\"]+\\)\"" m))
      (match-string 1 m))
     (t "fundamental"))))

(defun org-edit-src-get-label-format (s)
  "Extract the label format."
  (save-match-data
    (if (string-match "-l[ \t]+\\\\?\"\\([^\t\r\n\"]+\\)\\\\?\"" s)
	(match-string 1 s))))

(defun org-edit-src-get-indentation (pos)
  "Count leading whitespace characters on line."
  (save-match-data
    (goto-char pos)
    (org-get-indentation)))

(defun org-edit-src-exit (&optional context)
  "Exit special edit and protect problematic lines."
  (interactive)
  (unless (org-bound-and-true-p org-edit-src-from-org-mode)
    (error "This is not a sub-editing buffer, something is wrong"))
  (widen)
  (let* ((beg org-edit-src-beg-marker)
	 (end org-edit-src-end-marker)
	 (ovl org-edit-src-overlay)
	 (buffer (current-buffer))
	 (single (org-bound-and-true-p org-edit-src-force-single-line))
	 (macro (eq single 'macro-definition))
	 (total-nindent (+ (or org-edit-src-block-indentation 0)
			   org-edit-src-content-indentation))
	 (preserve-indentation org-src-preserve-indentation)
	 (allow-write-back-p (org-bound-and-true-p org-edit-src-allow-write-back-p))
	 (delta 0) code line col indent)
    (when allow-write-back-p
      (unless preserve-indentation (untabify (point-min) (point-max)))
      (if org-src-strip-leading-and-trailing-blank-lines
	  (save-excursion
	    (goto-char (point-min))
	    (if (looking-at "[ \t\n]*\n") (replace-match ""))
	    (unless macro
	      (if (re-search-forward "\n[ \t\n]*\\'" nil t) (replace-match ""))))))
    (setq line (if (org-bound-and-true-p org-edit-src-force-single-line)
		   1
		 (org-current-line))
	  col (current-column))
    (when allow-write-back-p
      (when single
	(goto-char (point-min))
	(if (re-search-forward "\\s-+\\'" nil t) (replace-match ""))
	(goto-char (point-min))
	(let ((cnt 0))
	  (while (re-search-forward "\n" nil t)
	    (setq cnt (1+ cnt))
	    (replace-match (if macro "\\n" " ") t t))
	  (when (and macro (> cnt 0))
	    (goto-char (point-max)) (insert "\\n")))
	(goto-char (point-min))
	(if (looking-at "\\s-*") (replace-match " ")))
      (when (org-bound-and-true-p org-edit-src-from-org-mode)
	(goto-char (point-min))
	(while (re-search-forward
		(if (eq major-mode 'org-mode) "^\\(.\\)" "^\\([*]\\|[ \t]*#\\+\\)") nil t)
	  (if (eq (org-current-line) line) (setq delta (1+ delta)))
	  (replace-match ",\\1")))
      (when (org-bound-and-true-p org-edit-src-picture)
	(setq preserve-indentation nil)
	(untabify (point-min) (point-max))
	(goto-char (point-min))
	(while (re-search-forward "^" nil t)
	  (replace-match ": ")))
      (unless (or single preserve-indentation (= total-nindent 0))
	(setq indent (make-string total-nindent ?\ ))
	(goto-char (point-min))
	(while (re-search-forward "^" nil t)
	  (replace-match indent)))
      (if (org-bound-and-true-p org-edit-src-picture)
	  (setq total-nindent (+ total-nindent 2)))
      (setq code (buffer-string))
      (set-buffer-modified-p nil))
    (org-src-switch-to-buffer (marker-buffer beg) (or context 'exit))
    (kill-buffer buffer)
    (goto-char beg)
    (when allow-write-back-p
      (delete-region beg end)
      (insert code)
      (goto-char beg)
      (if single (just-one-space)))
    (if (memq t (mapcar (lambda (overlay)
			  (eq (overlay-get overlay 'invisible)
			      'org-hide-block))
			(overlays-at (point))))
	;; Block is hidden; put point at start of block
	(beginning-of-line 0)
      ;; Block is visible, put point where it was in the code buffer
      (org-goto-line (1- (+ (org-current-line) line)))
      (org-move-to-column (if preserve-indentation col (+ col total-nindent delta))))
    (move-marker beg nil)
    (move-marker end nil))
  (unless (eq context 'save)
    (when org-edit-src-saved-temp-window-config
      (set-window-configuration org-edit-src-saved-temp-window-config)
      (setq org-edit-src-saved-temp-window-config nil))))

(defun org-edit-src-save ()
  "Save parent buffer with current state source-code buffer."
  (interactive)
  (let ((p (point)) (m (mark)) msg)
    (save-window-excursion
      (org-edit-src-exit 'save)
      (save-buffer)
      (setq msg (current-message))
      (if (eq org-src-window-setup 'other-frame)
	  (let ((org-src-window-setup 'current-window))
	    (org-edit-src-code 'save))
	(org-edit-src-code 'save)))
    (push-mark m 'nomessage)
    (goto-char (min p (point-max)))
    (message (or msg ""))))

(defun org-src-mode-configure-edit-buffer ()
  (when (org-bound-and-true-p org-edit-src-from-org-mode)
    (org-add-hook 'kill-buffer-hook
		  #'(lambda () (delete-overlay org-edit-src-overlay)) nil 'local)
    (if (org-bound-and-true-p org-edit-src-allow-write-back-p)
	(progn
	  (setq buffer-offer-save t)
	  (setq buffer-file-name
		(concat (buffer-file-name (marker-buffer org-edit-src-beg-marker))
			"[" (buffer-name) "]"))
	  (if (featurep 'xemacs)
	      (progn
		(make-variable-buffer-local 'write-contents-hooks) ; needed only for 21.4
		(setq write-contents-hooks '(org-edit-src-save)))
	    (setq write-contents-functions '(org-edit-src-save))))
      (setq buffer-read-only t))))

(org-add-hook 'org-src-mode-hook 'org-src-mode-configure-edit-buffer)


(defun org-src-associate-babel-session (info)
  "Associate edit buffer with comint session."
  (interactive)
  (let ((session (cdr (assoc :session (nth 2 info)))))
    (and session (not (string= session "none"))
	 (org-babel-comint-buffer-livep session)
	 ((lambda (f) (and (fboundp f) (funcall f session)))
	  (intern (format "org-babel-%s-associate-session" (nth 0 info)))))))

(defun org-src-babel-configure-edit-buffer ()
  (when org-src-babel-info
    (org-src-associate-babel-session org-src-babel-info)))

(org-add-hook 'org-src-mode-hook 'org-src-babel-configure-edit-buffer)
(defmacro org-src-do-at-code-block (&rest body)
  "Execute a command from an edit buffer in the Org-mode buffer."
  `(let ((beg-marker org-edit-src-beg-marker))
     (if beg-marker
	 (with-current-buffer (marker-buffer beg-marker)
	   (goto-char (marker-position beg-marker))
	   ,@body))))
(def-edebug-spec org-src-do-at-code-block (body))

(defun org-src-do-key-sequence-at-code-block (&optional key)
  "Execute key sequence at code block in the source Org buffer.
The command bound to KEY in the Org-babel key map is executed
remotely with point temporarily at the start of the code block in
the Org buffer.

This command is not bound to a key by default, to avoid conflicts
with language major mode bindings. To bind it to C-c @ in all
language major modes, you could use

  (add-hook 'org-src-mode-hook
            (lambda () (define-key org-src-mode-map \"\\C-c@\"
                    'org-src-do-key-sequence-at-code-block)))

In that case, for example, C-c @ t issued in code edit buffers
would tangle the current Org code block, C-c @ e would execute
the block and C-c @ h would display the other available
Org-babel commands."
  (interactive "kOrg-babel key: ")
  (if (equal key (kbd "C-g")) (keyboard-quit)
    (org-edit-src-save)
    (org-src-do-at-code-block
     (call-interactively
      (lookup-key org-babel-map key)))))

(defcustom org-src-tab-acts-natively nil
  "If non-nil, the effect of TAB in a code block is as if it were
issued in the language major mode buffer."
  :type 'boolean
  :group 'org-babel)

(defun org-src-native-tab-command-maybe ()
  "Perform language-specific TAB action.
Alter code block according to effect of TAB in the language major
mode."
  (and org-src-tab-acts-natively
       (let ((org-src-strip-leading-and-trailing-blank-lines nil))
	 (org-babel-do-key-sequence-in-edit-buffer (kbd "TAB")))))

(add-hook 'org-tab-first-hook 'org-src-native-tab-command-maybe)

(defun org-src-font-lock-fontify-block (lang start end)
  "Fontify code block.
This function is called by emacs automatic fontification, as long
as `org-src-fontify-natively' is non-nil. For manual
fontification of code blocks see `org-src-fontify-block' and
`org-src-fontify-buffer'"
  (let ((lang-mode (org-src-get-lang-mode lang)))
    (if (fboundp lang-mode)
	(let ((string (buffer-substring-no-properties start end))
	      (modified (buffer-modified-p))
	      (org-buffer (current-buffer)) pos next)
	  (remove-text-properties start end '(face nil))
	  (with-current-buffer
	      (get-buffer-create
	       (concat " org-src-fontification:" (symbol-name lang-mode)))
	    (delete-region (point-min) (point-max))
	    (insert (concat string " ")) ;; so there's a final property change
	    (unless (eq major-mode lang-mode) (funcall lang-mode))
	    (font-lock-fontify-buffer)
	    (setq pos (point-min))
	    (while (setq next (next-single-property-change pos 'face))
	      (put-text-property
	       (+ start (1- pos)) (+ start next) 'face
	       (get-text-property pos 'face) org-buffer)
	      (setq pos next)))
	  (add-text-properties
	   start end
	   '(font-lock-fontified t fontified t font-lock-multiline t))
	  (set-buffer-modified-p modified)))))

(defun org-src-fontify-block ()
  "Fontify code block at point."
  (interactive)
  (save-excursion
    (let ((org-src-fontify-natively t)
	  (info (org-edit-src-find-region-and-lang)))
      (font-lock-fontify-region (nth 0 info) (nth 1 info)))))

(defun org-src-fontify-buffer ()
  "Fontify all code blocks in the current buffer"
  (interactive)
  (org-babel-map-src-blocks nil
    (org-src-fontify-block)))

(defun org-src-get-lang-mode (lang)
  "Return major mode that should be used for LANG.
LANG is a string, and the returned major mode is a symbol."
  (intern
   (concat
    ((lambda (l) (if (symbolp l) (symbol-name l) l))
     (or (cdr (assoc lang org-src-lang-modes)) lang)) "-mode")))

(provide 'org-src)

;;; org-src.el ends here

debug log:

solving d605fb7525101199122ef2db9208641c56fc3f09 ...
found d605fb7525101199122ef2db9208641c56fc3f09 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).