unofficial mirror of emacs-devel@gnu.org 
 help / color / mirror / code / Atom feed
blob f5d553bd0892b6fd2f49d4ca666b3a95f61dd82d 24622 bytes (raw)
name: lisp/gnus/mm-uu.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
 
;;; mm-uu.el --- Return uu stuff as mm handles  -*- lexical-binding:t -*-

;; Copyright (C) 1998-2024 Free Software Foundation, Inc.

;; Author: Shenghuo Zhu <zsh@cs.rochester.edu>
;; Keywords: postscript uudecode binhex shar forward gnatsweb pgp

;; 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 <https://www.gnu.org/licenses/>.

;;; Commentary:

;;; Code:

(require 'mail-parse)
(require 'nnheader)
(require 'mm-decode)
(require 'mailcap)
(require 'mml2015)
(eval-when-compile (require 'cl-lib))

(autoload 'uudecode-decode-region "uudecode")
(autoload 'uudecode-decode-region-external "uudecode")
(autoload 'uudecode-decode-region-internal "uudecode")

(autoload 'binhex-decode-region "binhex")
(autoload 'binhex-decode-region-external "binhex")
(autoload 'binhex-decode-region-internal "binhex")

(autoload 'yenc-decode-region "yenc")
(autoload 'yenc-extract-filename "yenc")

(defcustom mm-uu-decode-function 'uudecode-decode-region
  "Function to uudecode.
Internal function is done in Lisp by default, therefore decoding may
appear to be horribly slow.  You can make Gnus use an external
decoder, such as uudecode."
  :type '(choice
	  (function-item :tag "Auto detect" uudecode-decode-region)
	  (function-item :tag "Internal" uudecode-decode-region-internal)
	  (function-item :tag "External" uudecode-decode-region-external))
  :group 'gnus-article-mime)

(defcustom mm-uu-binhex-decode-function 'binhex-decode-region
  "Function to binhex decode.
Internal function is done in elisp by default, therefore decoding may
appear to be horribly slow . You can make Gnus use the external Unix
decoder, such as hexbin."
  :type '(choice (function-item :tag "Auto detect" binhex-decode-region)
		 (function-item :tag "Internal" binhex-decode-region-internal)
		 (function-item :tag "External" binhex-decode-region-external))
  :group 'gnus-article-mime)

(defvar mm-uu-yenc-decode-function 'yenc-decode-region)

(defvar mm-uu-beginning-regexp nil)

(defvar mm-dissect-disposition "inline"
  "The default disposition of uu parts.
This can be either \"inline\" or \"attachment\".")

(defcustom mm-uu-emacs-sources-regexp "\\.emacs\\.sources"
  "The regexp of Emacs sources groups."
  :version "22.1"
  :type 'regexp
  :group 'gnus-article-mime)

(defcustom mm-uu-diff-groups-regexp "."
  "Regexp matching diff groups."
  :version "27.1"
  :type 'regexp
  :group 'gnus-article-mime)

(defcustom mm-uu-tex-groups-regexp "\\.tex\\>"
  "Regexp matching TeX groups."
  :version "23.1"
  :type 'regexp
  :group 'gnus-article-mime)

(defvar mm-uu-type-alist
  `((postscript
     "^%!PS-"
     "^%%EOF$"
     ,#'mm-uu-postscript-extract
     nil)
    (uu ;; Maybe we should have a more strict test here.
     "^begin[ \t]+0?[0-7][0-7][0-7][ \t]+"
     "^end[ \t]*$"
     ,#'mm-uu-uu-extract
     ,#'mm-uu-uu-filename)
    (binhex
     "^:.\\{63,63\\}$"
     ":$"
     ,#'mm-uu-binhex-extract
     nil
     ,#'mm-uu-binhex-filename)
    (yenc
     "^=ybegin.*size=[0-9]+.*name=.*$"
     "^=yend.*size=[0-9]+"
     ,#'mm-uu-yenc-extract
     ,#'mm-uu-yenc-filename)
    (shar
     "^#! */bin/sh"
     "^exit 0$"
     ,#'mm-uu-shar-extract)
    (forward
     ;; Thanks to Edward J. Sabol <sabol@alderaan.gsfc.nasa.gov> and
     ;; Peter von der Ahé <pahe@daimi.au.dk>
     "^-+ \\(Start of \\)?Forwarded message"
     "^-+ End \\(of \\)?forwarded message"
     ,#'mm-uu-forward-extract
     nil
     ,#'mm-uu-forward-test)
    (gnatsweb
     "^----gnatsweb-attachment----"
     nil
     ,#'mm-uu-gnatsweb-extract)
    (pgp-signed
     "^-----BEGIN PGP SIGNED MESSAGE-----"
     "^-----END PGP SIGNATURE-----"
     ,#'mm-uu-pgp-signed-extract
     nil
     nil)
    (pgp-encrypted
     "^-----BEGIN PGP MESSAGE-----"
     "^-----END PGP MESSAGE-----"
     ,#'mm-uu-pgp-encrypted-extract
     nil
     nil)
    (pgp-key
     "^-----BEGIN PGP PUBLIC KEY BLOCK-----"
     "^-----END PGP PUBLIC KEY BLOCK-----"
     ,#'mm-uu-pgp-key-extract
     ,#'mm-uu-gpg-key-skip-to-last
     nil)
    (markdown-emacs-sources
     "^```\\(?:elisp\\|emacs-lisp\\|\n(\\)"
     "^```$"
     ,#'mm-uu-emacs-sources-extract)
    (markdown-diff ;; this should be higher than `git-format-patch'
     "^```\\(?:diff\\|patch\\|\ndiff --git \\)"
     "^```$"
     ,#'mm-uu-diff-extract)
    (emacs-sources
     "^;;;?[ \t]*[^ \t]+\\.el[ \t]*--"
     "^;;;?[ \t]*\\([^ \t]+\\.el\\)[ \t]+ends here"
     ,#'mm-uu-emacs-sources-extract
     nil
     ,#'mm-uu-emacs-sources-test)
    (diff
     "^Index: "
     nil
     ,#'mm-uu-diff-extract
     nil
     ,#'mm-uu-diff-test)
    (diff
     "^=== modified file "
     nil
     ,#'mm-uu-diff-extract
     nil
     ,#'mm-uu-diff-test)
    (git-format-patch
     "^diff --git "
     nil
     ,#'mm-uu-diff-extract
     nil
     ,#'mm-uu-diff-test)
    (message-marks
     ;; Text enclosed with tags similar to `message-mark-insert-begin' and
     ;; `message-mark-insert-end'.  Don't use those variables to avoid
     ;; dependency on `message.el'.
     "^-+[8<>]*-\\{9,\\}[a-z ]+-\\{9,\\}[a-z ]+-\\{9,\\}[8<>]*-+$"
     "^-+[8<>]*-\\{9,\\}[a-z ]+-\\{9,\\}[a-z ]+-\\{9,\\}[8<>]*-+$"
     ,(lambda () (mm-uu-verbatim-marks-extract 0 0 1 -1))
     nil)
    ;; Omitting [a-z8<] leads to false positives (bogus signature separators
    ;; and mailing list banners).
    (insert-marks
     "^ *\\(-\\|_\\)\\{30,\\}.*[a-z8<].*\\(-\\|_\\)\\{30,\\} *$"
     "^ *\\(-\\|_\\)\\{30,\\}.*[a-z8<].*\\(-\\|_\\)\\{30,\\} *$"
     ,(lambda () (mm-uu-verbatim-marks-extract 0 0 1 -1))
     nil)
    (verbatim-marks
     ;; slrn-style verbatim marks, see
     ;; https://slrn.sourceforge.net/docs/slrn-manual-6.html#process_verbatim_marks
     "^#v\\+"
     "^#v\\-$"
     ,(lambda () (mm-uu-verbatim-marks-extract 0 0))
     nil)
    (LaTeX
     "^\\([\\%][^\n]+\n\\)*\\\\documentclass.*[[{%]"
     "^\\\\end{document}"
     ,#'mm-uu-latex-extract
     nil
     ,#'mm-uu-latex-test)
    (org-src-code-block
     "^[ \t]*#\\+begin_"
     "^[ \t]*#\\+end_"
     ,#'mm-uu-org-src-code-block-extract)
    (org-meta-line
     "^[ \t]*#\\+[[:alpha:]]+: "
     "$"
     ,#'mm-uu-org-src-code-block-extract))
  "A list of specifications for non-MIME attachments.
Each element consists of a `mm-uu-entry'.
The functions in the last 3 slots of this type can make use of the following
dynamically-scoped variables:
`file-name', `start-point', and `end-point'.

After modifying this list you must run \\[mm-uu-configure].

You can disable elements from this list by customizing
`mm-uu-configure-list'.")

(defcustom mm-uu-configure-list '((shar . disabled))
  "A list of mm-uu configuration.
To disable dissecting shar codes, for instance, add
`(shar . disabled)' to this list."
  :type 'alist
  :options (mapcar (lambda (entry)
		     (list (car entry) '(const disabled)))
		   mm-uu-type-alist)
  :group 'gnus-article-mime)

(defvar mm-uu-text-plain-type '("text/plain" (charset . gnus-decoded))
  "MIME type and parameters for text/plain parts.
`gnus-decoded' is a fake charset, which means no further decoding.")

;; functions

(cl-defstruct (mm-uu-entry
               (:conc-name mm-uu-)
               (:constructor nil)
               (:type list))
  type beginning-regexp end-regexp function-extract function-1 function-2)

(defcustom mm-uu-hide-markers (< 16 (length (defined-colors)))
  "If non-nil, hide verbatim markers.
The value should be nil on displays where the face
`mm-uu-extract' isn't distinguishable to the face `default'."
  :type '(choice (const :tag "Hide" t)
		 (const :tag "Don't hide" nil))
  :version "23.1" ;; No Gnus
  :group 'gnus-article-mime)

(defface mm-uu-extract '(;; Inspired by `gnus-cite-3'
			 (((type tty)
			   (class color)
			   (background dark))
			  (:background "dark blue"
			   :extend t))
			 (((class color)
			   (background dark))
			  (:foreground "light yellow"
			   :background "dark green"
			   :extend t))
			 (((type tty)
			   (class color)
			   (background light))
			  (:foreground "dark blue"
			   :extend t))
			 (((class color)
			   (background light))
			  (:foreground "dark green"
			   :background "light yellow"
			   :extend t))
			 (t
			  ()))
  "Face for extracted buffers."
  ;; See `mm-uu-verbatim-marks-extract'.
  :version "23.1" ;; No Gnus
  :group 'gnus-article-mime)

(defun mm-uu-copy-to-buffer (&optional from to properties)
  "Copy the contents of the current buffer to a fresh buffer.
Return that buffer.

If PROPERTIES is non-nil, PROPERTIES are applied to the buffer,
see `set-text-properties'.  If PROPERTIES equals t, this means to
apply the face `mm-uu-extract'."
  (let ((obuf (current-buffer))
        (multi enable-multibyte-characters)
	(coding-system buffer-file-coding-system))
    (with-current-buffer (generate-new-buffer " *mm-uu*")
      (if multi (mm-enable-multibyte) (mm-disable-multibyte))
      (setq buffer-file-coding-system coding-system)
      (insert-buffer-substring obuf from to)
      (cond ((eq properties  t)
	     (set-text-properties (point-min) (point-max)
				  '(face mm-uu-extract)))
	    (properties
	     (set-text-properties (point-min) (point-max) properties)))
      (current-buffer))))

(defun mm-uu-configure-p  (key val)
  (member (cons key val) mm-uu-configure-list))

(defun mm-uu-configure (&optional symbol value)
  "Configure detection of non-MIME attachments."
  (interactive)
  (if symbol (set-default symbol value))
  (setq mm-uu-beginning-regexp
        (mapconcat #'mm-uu-beginning-regexp
	           (delq nil (mapcar
	                      (lambda (entry)
	                        (if (mm-uu-configure-p (mm-uu-type entry)
		                                       'disabled)
		                    nil entry))
		              mm-uu-type-alist))
		   "\\|")))

(mm-uu-configure)

(defvar file-name)
(defvar start-point)
(defvar end-point)
(defvar mm-uu-entry)

(defun mm-uu-uu-filename ()
  (if (looking-at ".+")
      (setq file-name
	    (let ((nnheader-file-name-translation-alist
		   '((?/ . ?,) (?\  . ?_) (?* . ?_) (?$ . ?_))))
	      (nnheader-translate-file-chars (match-string 0))))))

(defun mm-uu-binhex-filename ()
  (setq file-name
	(ignore-errors
	  (binhex-decode-region start-point end-point t))))

(defun mm-uu-yenc-filename ()
  (goto-char start-point)
  (setq file-name
	(ignore-errors
	  (yenc-extract-filename))))

(defun mm-uu-forward-test ()
  (save-excursion
    (goto-char start-point)
    (forward-line)
    (looking-at "[\r\n]*[a-zA-Z][a-zA-Z0-9-]*:")))

(defun mm-uu-postscript-extract ()
  (mm-make-handle (mm-uu-copy-to-buffer start-point end-point)
		  '("application/postscript")))

(defun mm-uu-verbatim-marks-extract (start-offset end-offset
						  &optional
						  start-hide
						  end-hide)
  (let ((start (or (and mm-uu-hide-markers
			start-hide)
		   start-offset
		   1))
	(end   (or (and mm-uu-hide-markers
			end-hide)
		   end-offset
		   -1)))
    (mm-make-handle
     (mm-uu-copy-to-buffer
      (progn (goto-char start-point)
	     (forward-line start)
	     (point))
      (progn (goto-char end-point)
	   (forward-line end)
	   (point))
      t)
     '("text/x-verbatim" (charset . gnus-decoded)))))

(defun mm-uu-latex-extract ()
  (mm-make-handle
   (mm-uu-copy-to-buffer start-point end-point t)
   ;; application/x-tex?
   '("text/x-verbatim" (charset . gnus-decoded))))

(defun mm-uu-emacs-sources-extract ()
  (mm-make-handle (mm-uu-copy-to-buffer start-point end-point)
		  '("application/emacs-lisp" (charset . gnus-decoded))
		  nil nil
		  (list mm-dissect-disposition
			(cons 'filename file-name))))

(defun mm-uu-org-src-code-block-extract ()
  (mm-make-handle (mm-uu-copy-to-buffer start-point end-point)
		  '("text/x-org" (charset . gnus-decoded))))

(defvar gnus-newsgroup-name)

(defun mm-uu-emacs-sources-test ()
  (setq file-name (match-string 1))
  (and gnus-newsgroup-name
       mm-uu-emacs-sources-regexp
       (string-match mm-uu-emacs-sources-regexp gnus-newsgroup-name)))

(defun mm-uu-diff-extract ()
  (mm-make-handle (mm-uu-copy-to-buffer start-point end-point)
		  '("text/x-patch" (charset . gnus-decoded))))

(defun mm-uu-diff-test ()
  (and gnus-newsgroup-name
       mm-uu-diff-groups-regexp
       (string-match mm-uu-diff-groups-regexp gnus-newsgroup-name)))

(defun mm-uu-latex-test ()
  (and gnus-newsgroup-name
       mm-uu-tex-groups-regexp
       (string-match mm-uu-tex-groups-regexp gnus-newsgroup-name)))

(defun mm-uu-forward-extract ()
  (mm-make-handle (mm-uu-copy-to-buffer
		   (progn
		     (goto-char start-point)
		     (forward-line)
		     (skip-chars-forward "\n")
		     (point))
		   (progn (goto-char end-point) (forward-line -1) (point)))
		  '("message/rfc822" (charset . gnus-decoded))))

(defun mm-uu-uu-extract ()
  (mm-make-handle (mm-uu-copy-to-buffer start-point end-point)
		  (list (or (and file-name
				 (string-match "\\.[^\\.]+$"
					       file-name)
				 (mailcap-extension-to-mime
				  (match-string 0 file-name)))
			    "application/octet-stream"))
		  'x-uuencode nil
		  (if (and file-name (not (equal file-name "")))
		      (list mm-dissect-disposition
			    (cons 'filename file-name)))))

(defun mm-uu-binhex-extract ()
  (mm-make-handle (mm-uu-copy-to-buffer start-point end-point)
		  (list (or (and file-name
				 (string-match "\\.[^\\.]+$" file-name)
				 (mailcap-extension-to-mime
				  (match-string 0 file-name)))
			    "application/octet-stream"))
		  'x-binhex nil
		  (if (and file-name (not (equal file-name "")))
		      (list mm-dissect-disposition
			    (cons 'filename file-name)))))

(defvar gnus-original-article-buffer)   ; gnus.el

(defun mm-uu-yenc-extract ()
  ;; This might not be exactly correct, but we sure can't get the
  ;; binary data from the article buffer, since that's already in a
  ;; non-binary charset.  So get it from the original article buffer.
  (mm-make-handle (with-current-buffer gnus-original-article-buffer
		    (mm-uu-copy-to-buffer start-point end-point))
		  (list (or (and file-name
				 (string-match "\\.[^\\.]+$" file-name)
				 (mailcap-extension-to-mime
				  (match-string 0 file-name)))
			    "application/octet-stream"))
		  'x-yenc nil
		  (if (and file-name (not (equal file-name "")))
		      (list mm-dissect-disposition
			    (cons 'filename file-name)))))


(defun mm-uu-shar-extract ()
  (mm-make-handle (mm-uu-copy-to-buffer start-point end-point)
		  '("application/x-shar")))

(defun mm-uu-gnatsweb-extract ()
  (save-restriction
    (goto-char start-point)
    (forward-line)
    (narrow-to-region (point) end-point)
    (mm-dissect-buffer t)))

(defun mm-uu-pgp-signed-test (&rest _)
  (and
   mml2015-use
   (mml2015-clear-verify-function)
   (cond
    ((eq mm-verify-option 'never) nil)
    ((eq mm-verify-option 'always) t)
    ((eq mm-verify-option 'known) t)
    (t (prog1
	   (y-or-n-p "Verify pgp signed part? ")
	 (message ""))))))

(defvar gnus-newsgroup-charset)

(defun mm-uu-pgp-signed-extract-1 (_handles _ctl)
  (let ((buf (mm-uu-copy-to-buffer (point-min) (point-max))))
    (with-current-buffer buf
      (if (mm-uu-pgp-signed-test)
	  (progn
	    (mml2015-clean-buffer)
	    (let ((coding-system-for-write (or buffer-file-coding-system
					       gnus-newsgroup-charset
					       'iso-8859-1))
		  (coding-system-for-read (or buffer-file-coding-system
					      gnus-newsgroup-charset
					      'iso-8859-1)))
	      (funcall (mml2015-clear-verify-function))))
	(when (and mml2015-use (null (mml2015-clear-verify-function)))
	  (mm-sec-status
	   'gnus-details
	   (format-message
	    "Clear verification not supported by `%s'.\n" mml2015-use)))
	(mml2015-extract-cleartext-signature))
      (list (mm-make-handle buf mm-uu-text-plain-type)))))

(defun mm-uu-pgp-signed-extract ()
  (let ((mm-security-handle (list (substring "multipart/signed"))))
    (mm-set-handle-multipart-parameter
     mm-security-handle 'protocol "application/x-gnus-pgp-signature")
    (save-restriction
      (narrow-to-region start-point end-point)
      (add-text-properties 0 (length (car mm-security-handle))
			   (list 'buffer (mm-uu-copy-to-buffer))
			   (car mm-security-handle))
      (setcdr mm-security-handle
	      (mm-uu-pgp-signed-extract-1 nil
					  mm-security-handle)))
    mm-security-handle))

(defun mm-uu-pgp-encrypted-test (&rest _)
  (and
   mml2015-use
   (mml2015-clear-decrypt-function)
   (cond
    ((eq mm-decrypt-option 'never) nil)
    ((eq mm-decrypt-option 'always) t)
    ((eq mm-decrypt-option 'known) t)
    (t (prog1
	   (y-or-n-p "Decrypt pgp encrypted part? ")
	 (message ""))))))

(defun mm-uu-pgp-encrypted-extract-1 (_handles _ctl)
  (let ((buf (mm-uu-copy-to-buffer (point-min) (point-max)))
	(first t)
	charset)
    ;; Make sure there's a blank line between header and body.
    (with-current-buffer buf
      (goto-char (point-min))
      (while (prog2
		 (forward-line 1)
		 (if first
		     (looking-at "[^\t\n ]+:")
		   (looking-at "[^\t\n ]+:\\|[\t ]"))
	       (setq first nil)))
      (unless (memq (char-after) '(?\n nil))
	(insert "\n"))
      (save-restriction
	(narrow-to-region (point-min) (point))
	(setq charset (mail-fetch-field "charset")))
      (if (and (mm-uu-pgp-encrypted-test)
	       (progn
		 (mml2015-clean-buffer)
		 (funcall (mml2015-clear-decrypt-function))
		 (equal (mm-handle-multipart-ctl-parameter mm-security-handle
							   'gnus-info)
			"OK")))
	  (progn
	    ;; Decode charset.
	    (if (and (or charset
			 (setq charset gnus-newsgroup-charset))
		     (setq charset (mm-charset-to-coding-system charset))
		     (not (eq charset 'ascii)))
		;; Assume that buffer's multibyteness is turned off.
		;; See `mml2015-pgg-clear-decrypt'.
		(insert (decode-coding-string (prog1
						  (buffer-string)
						(erase-buffer)
						(mm-enable-multibyte))
					      charset))
	      (mm-enable-multibyte))
	    (list (mm-make-handle buf mm-uu-text-plain-type)))
	(list (mm-make-handle buf '("application/pgp-encrypted")))))))

(defun mm-uu-pgp-encrypted-extract ()
  (let ((mm-security-handle (list (substring "multipart/encrypted"))))
    (mm-set-handle-multipart-parameter
     mm-security-handle 'protocol "application/x-gnus-pgp-encrypted")
    (save-restriction
      (narrow-to-region start-point end-point)
      (add-text-properties 0 (length (car mm-security-handle))
			   (list 'buffer (mm-uu-copy-to-buffer))
			   (car mm-security-handle))
      (setcdr mm-security-handle
	      (mm-uu-pgp-encrypted-extract-1 nil
					     mm-security-handle)))
    mm-security-handle))

(defun mm-uu-gpg-key-skip-to-last ()
  ;; FIXME: Don't use mm-uu-entry (we know which entry it is anyway!).
  ;; FIXME: Move it to function-2 so it doesn't need to check
  ;; mm-uu-configure-p.
  (let ((point (point))
	(end-regexp (mm-uu-end-regexp mm-uu-entry))
	(beginning-regexp (mm-uu-beginning-regexp mm-uu-entry)))
    (when (and end-regexp
	       (not (mm-uu-configure-p (mm-uu-type mm-uu-entry) 'disabled)))
      (while (re-search-forward end-regexp nil t)
	(skip-chars-forward " \t\n\r")
	(if (looking-at beginning-regexp)
	    (setq point (match-end 0)))))
    (goto-char point)))

(defun mm-uu-pgp-key-extract ()
  (let ((buf (mm-uu-copy-to-buffer start-point end-point)))
    (mm-make-handle buf
		    '("application/pgp-keys"))))

;;;###autoload
(defun mm-uu-dissect (&optional noheader mime-type)
  "Dissect the current buffer and return a list of uu handles.
The optional NOHEADER means there's no header in the buffer.
MIME-TYPE specifies a MIME type and parameters, which defaults to the
value of `mm-uu-text-plain-type'."
  (let ((case-fold-search t)
	(mm-uu-text-plain-type (or mime-type mm-uu-text-plain-type))
	text-start start-point end-point file-name result mm-uu-entry)
    (save-excursion
      (goto-char (point-min))
      (cond
       (noheader)
       ((looking-at "\n")
	(forward-line))
       ((search-forward "\n\n" nil t)
	t)
       (t (goto-char (point-max))))
      (setq text-start (point))
      (while (re-search-forward mm-uu-beginning-regexp nil t)
	(setq start-point (match-beginning 0)
	      mm-uu-entry nil)
	(let ((alist mm-uu-type-alist)
	      (beginning-regexp (match-string 0)))
	  (while (not mm-uu-entry)
	    (if (string-match (mm-uu-beginning-regexp (car alist))
			      beginning-regexp)
		(setq mm-uu-entry (car alist))
	      (pop alist))))
	(funcall (or (mm-uu-function-1 mm-uu-entry) #'ignore))
	(forward-line);; in case of failure
	(when (and (not (mm-uu-configure-p (mm-uu-type mm-uu-entry) 'disabled))
		   (let ((end-regexp (mm-uu-end-regexp mm-uu-entry)))
		     (if (not end-regexp)
			 (or (setq end-point (point-max)) t)
		       (prog1
			   (re-search-forward end-regexp nil t)
			 (forward-line)
			 (setq end-point (point)))))
		   (funcall (or (mm-uu-function-2 mm-uu-entry)
		                (lambda () t))))
	  (if (and (> start-point text-start)
		   (progn
		     (goto-char text-start)
		     (re-search-forward "." start-point t)))
	      (push
	       (mm-make-handle
		(mm-uu-copy-to-buffer
		 text-start
		 ;; A start-separator is likely accompanied by
		 ;; a leading newline.
		 (if (and (eq (char-before start-point) ?\n)
			  (eq (char-before (1- start-point)) ?\n))
		     (1- start-point)
		   start-point))
		mm-uu-text-plain-type)
	       result))
	  (push
	   (funcall (mm-uu-function-extract mm-uu-entry))
	   result)
	  (goto-char (setq text-start end-point))))
      (when result
	(goto-char text-start)
	(when (re-search-forward "." nil t)
	  (push (mm-make-handle
		 (mm-uu-copy-to-buffer
		  ;; An end-separator is likely accompanied by
		  ;; a trailing newline.
		  (if (eq (char-after text-start) ?\n)
		      (1+ text-start)
		    text-start)
		  (point-max))
		 mm-uu-text-plain-type)
		result))
	(setq result (cons "multipart/mixed" (nreverse result))))
      result)))

;;;###autoload
(defun mm-uu-dissect-text-parts (handle &optional decoded)
  "Dissect text parts and put uu handles into HANDLE.
Assume text has been decoded if DECODED is non-nil."
  (let ((buffer (mm-handle-buffer handle)))
    (cond ((stringp buffer)
	   (dolist (elem (cdr handle))
	     (mm-uu-dissect-text-parts elem decoded)))
	  ((bufferp buffer)
	   (let ((type (mm-handle-media-type handle))
		 (case-fold-search t) ;; string-match
		 children charset encoding)
	     (when (and
		    (stringp type)
		    ;; Mutt still uses application/pgp even though
		    ;; it has already been withdrawn.
		    (string-match "\\`text/\\|\\`application/pgp\\'" type)
		    (not (string-match "/x-\\(?:diff\\|patch\\)\\'" type))
                    (equal (car (mm-handle-disposition handle))
                           "inline")
		    (setq
		     children
		     (with-current-buffer buffer
		       (cond
			((or decoded
			     (eq (setq charset (mail-content-type-get
						(mm-handle-type handle)
						'charset))
				 'gnus-decoded))
			 (setq decoded t)
			 (mm-uu-dissect
			  t (cons type '((charset . gnus-decoded)))))
			(charset
			 (setq decoded t)
			 (mm-with-multibyte-buffer
			   (insert (mm-decode-string (mm-get-part handle)
						     charset))
			   (mm-uu-dissect
			    t (cons type '((charset . gnus-decoded))))))
			((setq encoding (mm-handle-encoding handle))
			 (setq decoded nil)
			 ;; Inherit the multibyteness of the `buffer'.
			 (with-temp-buffer
			   (insert-buffer-substring buffer)
			   (mm-decode-content-transfer-encoding
			    encoding type)
			   (mm-uu-dissect t (list type))))
			(t
			 (setq decoded nil)
			 (mm-uu-dissect t (list type)))))))
	       ;; Ignore it if a given part is dissected into a single
	       ;; part of which the type is the same as the given one.
	       (if (and (<= (length children) 2)
			(string-equal (mm-handle-media-type (cadr children))
				      type))
		   (kill-buffer (mm-handle-buffer (cadr children)))
		 (kill-buffer buffer)
		 (setcdr handle (cdr children))
		 (setcar handle (car children)) ;; "multipart/mixed"
		 (dolist (elem (cdr children))
		   (mm-uu-dissect-text-parts elem decoded))))))
	  (t
	   (dolist (elem handle)
	     (mm-uu-dissect-text-parts elem decoded))))))

(provide 'mm-uu)

;; Local Variables:
;; coding: utf-8
;; End:

;;; mm-uu.el ends here

debug log:

solving f5d553bd0892 ...
found f5d553bd0892 in https://yhetil.org/emacs-devel/87v81dmhxi.fsf@orpheu.olymp/
found 3c7e3cbdf1af in https://git.savannah.gnu.org/cgit/emacs.git
preparing index
index prepared:
100644 3c7e3cbdf1afcb8d37e7fb1f936106468f2e7165	lisp/gnus/mm-uu.el

applying [1/1] https://yhetil.org/emacs-devel/87v81dmhxi.fsf@orpheu.olymp/
diff --git a/lisp/gnus/mm-uu.el b/lisp/gnus/mm-uu.el
index 3c7e3cbdf1af..f5d553bd0892 100644

Checking patch lisp/gnus/mm-uu.el...
Applied patch lisp/gnus/mm-uu.el cleanly.

index at:
100644 f5d553bd0892b6fd2f49d4ca666b3a95f61dd82d	lisp/gnus/mm-uu.el

(*) 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.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).