rmail.el 153 KB
Newer Older
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
;;; rmail.el --- main code of "RMAIL" mail reader for Emacs

;; Copyright (C) 1985, 1986, 1987, 1988, 1993, 1994, 1995, 1996, 1997, 1998,
;;   2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
;;   Free Software Foundation, Inc.

;; Maintainer: FSF
;; Keywords: mail

;; 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:

;;; Code:

;; Souped up by shane@mit-ajax based on ideas of rlk@athena.mit.edu
;;   New features include attribute and keyword support, message
;;   selection by dispatch table, summary by attributes and keywords,
;;   expunging by dispatch table, sticky options for file commands.

;; Extended by Bob Weiner of Motorola
;;   New features include: rmail and rmail-summary buffers remain
;;   synchronized and key bindings basically operate the same way in both
;;   buffers, summary by topic or by regular expression, rmail-reply-prefix
;;   variable, and a bury rmail buffer (wipe) command.
;;

(require 'mail-utils)

(defconst rmail-attribute-header "X-RMAIL-ATTRIBUTES"
  "The header that stores the Rmail attribute data.")

(defconst rmail-keyword-header "X-RMAIL-KEYWORDS"
  "The header that stores the Rmail keyword data.")

;;; Attribute indexes

(defconst rmail-answered-attr-index 0
  "The index for the `answered' attribute.")

(defconst rmail-deleted-attr-index 1
  "The index for the `deleted' attribute.")

(defconst rmail-edited-attr-index 2
  "The index for the `edited' attribute.")

(defconst rmail-filed-attr-index 3
  "The index for the `filed' attribute.")

(defconst rmail-retried-attr-index 4
  "The index for the `retried' attribute.")

(defconst rmail-forwarded-attr-index 5
  "The index for the `forwarded' attribute.")

(defconst rmail-unseen-attr-index 6
  "The index for the `unseen' attribute.")

72
(defconst rmail-resent-attr-index 7
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
  "The index for the `resent' attribute.")

(defconst rmail-attr-array
  '[(?A "answered")
    (?D "deleted")
    (?E "edited")
    (?F "filed")
    (?R "retried")
    (?S "forwarded")
    (?U "unseen")
    (?r "resent")]
  "An array that provides a mapping between an attribute index,
its character representation and its display representation.")

(defvar deleted-head)
(defvar font-lock-fontified)
(defvar mail-abbrev-syntax-table)
(defvar mail-abbrevs)
(defvar messages-head)
(defvar total-messages)
(defvar tool-bar-map)

(defvar rmail-header-style 'normal
  "The current header display style choice, one of
'normal (selected headers) or 'full (all headers).")

99
;; rmail-spool-directory and rmail-file-name are defined in paths.el.
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

(defgroup rmail nil
  "Mail reader for Emacs."
  :group 'mail)

(defgroup rmail-retrieve nil
  "Rmail retrieval options."
  :prefix "rmail-"
  :group 'rmail)

(defgroup rmail-files nil
  "Rmail files."
  :prefix "rmail-"
  :group 'rmail)

(defgroup rmail-headers nil
  "Rmail header options."
  :prefix "rmail-"
  :group 'rmail)

(defgroup rmail-reply nil
  "Rmail reply options."
  :prefix "rmail-"
  :group 'rmail)

(defgroup rmail-summary nil
  "Rmail summary options."
  :prefix "rmail-"
  :prefix "rmail-summary-"
  :group 'rmail)

(defgroup rmail-output nil
  "Output message to a file."
  :prefix "rmail-output-"
  :prefix "rmail-"
  :group 'rmail)

(defgroup rmail-edit nil
  "Rmail editing."
  :prefix "rmail-edit-"
  :group 'rmail)

(defgroup rmail-obsolete nil
  "Rmail obsolete customization variables."
  :group 'rmail)

(defcustom rmail-movemail-program nil
  "If non-nil, the file name of the `movemail' program."
  :group 'rmail-retrieve
  :type '(choice (const nil) string))

(defcustom rmail-pop-password nil
152
  "Password to use when reading mail from POP server.
153 154 155 156 157 158
Please use `rmail-remote-password' instead."
  :type '(choice (string :tag "Password")
		 (const :tag "Not Required" nil))
  :group 'rmail-obsolete)

(defcustom rmail-pop-password-required nil
159
  "Non-nil if a password is required when reading mail from a POP server.
160 161 162 163 164
Please use rmail-remote-password-required instead."
  :type 'boolean
  :group 'rmail-obsolete)

(defcustom rmail-remote-password nil
165
  "Password to use when reading mail from a remote server.
166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181
This setting is ignored for mailboxes whose URL already contains a password."
  :type '(choice (string :tag "Password")
		 (const :tag "Not Required" nil))
  :set-after '(rmail-pop-password)
  :set #'(lambda (symbol value)
	   (set-default symbol
			(if (and (not value)
                                 (boundp 'rmail-pop-password)
				 rmail-pop-password)
			    rmail-pop-password
			  value))
	   (setq rmail-pop-password nil))
  :group 'rmail-retrieve
  :version "22.1")

(defcustom rmail-remote-password-required nil
182
  "Non-nil if a password is required when reading mail from a remote server."
183 184 185 186 187 188 189 190 191 192 193 194 195 196
  :type 'boolean
  :set-after '(rmail-pop-password-required)
  :set #'(lambda (symbol value)
	   (set-default symbol
			(if (and (not value)
                                 (boundp 'rmail-pop-password-required)
				 rmail-pop-password-required)
			    rmail-pop-password-required
			  value))
	   (setq rmail-pop-password-required nil))
  :group 'rmail-retrieve
  :version "22.1")

(defcustom rmail-movemail-flags nil
197
  "List of flags to pass to movemail.
198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213
Most commonly used to specify `-g' to enable GSS-API authentication
or `-k' to enable Kerberos authentication."
  :type '(repeat string)
  :group 'rmail-retrieve
  :version "20.3")

(defvar rmail-remote-password-error "invalid usercode or password\\|
unknown user name or bad password\\|Authentication failed\\|MU_ERR_AUTH_FAILURE"
  "Regular expression matching incorrect-password POP or IMAP server error
messages.
If you get an incorrect-password error that this expression does not match,
please report it with \\[report-emacs-bug].")

(defvar rmail-encoded-remote-password nil)

(defcustom rmail-preserve-inbox nil
214
  "Non-nil means leave incoming mail in the user's inbox--don't delete it."
215 216 217 218
  :type 'boolean
  :group 'rmail-retrieve)

(defcustom rmail-movemail-search-path nil
219 220 221
  "List of directories to search for movemail (in addition to `exec-path')."
  :group 'rmail-retrieve
  :type '(repeat (directory)))
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

(declare-function mail-position-on-field "sendmail" (field &optional soft))
(declare-function mail-text-start "sendmail" ())
(declare-function rmail-dont-reply-to "mail-utils" (destinations))
(declare-function rmail-update-summary "rmailsum" (&rest ignore))

(defun rmail-probe (prog)
  "Determine what flavor of movemail PROG is.
We do this by executing it with `--version' and analyzing its output."
  (with-temp-buffer
    (let ((tbuf (current-buffer)))
      (buffer-disable-undo tbuf)
      (call-process prog nil tbuf nil "--version")
      (if (not (buffer-modified-p tbuf))
	  ;; Should not happen...
	  nil
	(goto-char (point-min))
	(cond
	 ((looking-at ".*movemail: invalid option")
	  'emacs)    ;; Possibly...
	 ((looking-at "movemail (GNU Mailutils .*)")
	  'mailutils)
	 (t
	  ;; FIXME:
	  'emacs))))))

(defun rmail-autodetect ()
  "Determine the file name of the `movemail' program and return its flavor.
If `rmail-movemail-program' is non-nil, use it.
Otherwise, look for `movemail' in the directories in
`rmail-movemail-search-path', those in `exec-path', and `exec-directory'."
  (if rmail-movemail-program
      (rmail-probe rmail-movemail-program)
    (catch 'scan
      (dolist (dir (append rmail-movemail-search-path exec-path
			   (list exec-directory)))
	(when (and dir (file-accessible-directory-p dir))
	  ;; Previously, this didn't have to work on Windows, because
	  ;; rmail-insert-inbox-text before r1.439 fell back to using
	  ;; (expand-file-name "movemail" exec-directory) and just
	  ;; assuming it would work.
	  ;; http://lists.gnu.org/archive/html/bug-gnu-emacs/2008-02/msg00087.html
	  (let ((progname (expand-file-name
			   (concat "movemail"
				   (if (memq system-type '(ms-dos windows-nt))
				       ".exe")) dir)))
	    (when (and (not (file-directory-p progname))
		       (file-executable-p progname))
	      (let ((x (rmail-probe progname)))
		(when x
		  (setq rmail-movemail-program progname)
		  (throw 'scan x))))))))))

(defvar rmail-movemail-variant-in-use nil
  "The movemail variant currently in use. Known variants are:

  `emacs'     Means any implementation, compatible with the native Emacs one.
              This is the default;
  `mailutils' Means GNU mailutils implementation, capable of handling full
mail URLs as the source mailbox.")

;;;###autoload
(defun rmail-movemail-variant-p (&rest variants)
  "Return t if the current movemail variant is any of VARIANTS.
Currently known variants are 'emacs and 'mailutils."
  (when (not rmail-movemail-variant-in-use)
    ;; Autodetect
    (setq rmail-movemail-variant-in-use (rmail-autodetect)))
  (not (null (member rmail-movemail-variant-in-use variants))))

;; Call for effect, to set rmail-movemail-program (if not set by the
;; user), and rmail-movemail-variant-in-use. Used by various functions.
;; I'm not sure if M-x rmail is the only entry point to this package.
;; If so, this can be moved there.
(rmail-movemail-variant-p)

;;;###autoload
299 300
(defcustom rmail-dont-reply-to-names nil
  "A regexp specifying addresses to prune from a reply message.
301 302 303 304 305 306
If this is nil, it is set the first time you compose a reply, to
a value which excludes your own email address, plus whatever is
specified by `rmail-default-dont-reply-to-names'.

Matching addresses are excluded from the CC field in replies, and
also the To field, unless this would leave an empty To field."
307 308 309 310
  :type '(choice regexp (const :tag "Your Name" nil))
  :group 'rmail-reply)

;;;###autoload
311
(defvar rmail-default-dont-reply-to-names "\\`info-"
312 313 314 315 316 317 318
  "Regexp specifying part of the default value of `rmail-dont-reply-to-names'.
This is used when the user does not set `rmail-dont-reply-to-names'
explicitly.  (The other part of the default value is the user's
email address and name.)  It is useful to set this variable in
the site customization file.  The default value is conventionally
used for large mailing lists to broadcast announcements.")
;; Is it really useful to set this site-wide?
319

320
;;;###autoload
321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338
(defcustom rmail-ignored-headers
  (concat "^via:\\|^mail-from:\\|^origin:\\|^references:\\|^sender:"
	  "\\|^status:\\|^received:\\|^x400-originator:\\|^x400-recipients:"
	  "\\|^x400-received:\\|^x400-mts-identifier:\\|^x400-content-type:"
	  "\\|^\\(resent-\\|\\)message-id:\\|^summary-line:\\|^resent-date:"
	  "\\|^nntp-posting-host:\\|^path:\\|^x-char.*:\\|^x-face:\\|^face:"
	  "\\|^x-mailer:\\|^delivered-to:\\|^lines:"
	  "\\|^content-transfer-encoding:\\|^x-coding-system:"
	  "\\|^return-path:\\|^errors-to:\\|^return-receipt-to:"
	  "\\|^precedence:\\|^mime-version:"
	  "\\|^list-owner:\\|^list-help:\\|^list-post:\\|^list-subscribe:"
	  "\\|^list-id:\\|^list-unsubscribe:\\|^list-archive:"
	  "\\|^content-length:\\|^nntp-posting-date:\\|^user-agent"
	  "\\|^importance:\\|^envelope-to:\\|^delivery-date\\|^openpgp:"
	  "\\|^mbox-line:\\|^cancel-lock:"
	  "\\|^DomainKey-Signature:\\|^dkim-signature:"
	  "\\|^resent-face:\\|^resent-x.*:\\|^resent-organization:\\|^resent-openpgp:"
	  "\\|^x-.*:")
339
  "Regexp to match header fields that Rmail should normally hide.
340 341 342 343 344 345 346 347 348 349 350
\(See also `rmail-nonignored-headers', which overrides this regexp.)
This variable is used for reformatting the message header,
which normally happens once for each message,
when you view the message for the first time in Rmail.
To make a change in this variable take effect
for a message that you have already viewed,
go to that message and type \\[rmail-toggle-header] twice."
  :type 'regexp
  :group 'rmail-headers)

(defcustom rmail-nonignored-headers "^x-spam-status:"
351
  "Regexp to match X header fields that Rmail should show.
352 353 354 355 356 357 358 359 360 361 362 363 364
This regexp overrides `rmail-ignored-headers'; if both this regexp
and that one match a certain header field, Rmail shows the field.
If this is nil, ignore all header fields in `rmail-ignored-headers'.

This variable is used for reformatting the message header,
which normally happens once for each message,
when you view the message for the first time in Rmail.
To make a change in this variable take effect
for a message that you have already viewed,
go to that message and type \\[rmail-toggle-header] twice."
  :type '(choice (const nil) (regexp))
  :group 'rmail-headers)

365
;;;###autoload
366
(defcustom rmail-displayed-headers nil
367
  "Regexp to match Header fields that Rmail should display.
368 369 370 371 372
If nil, display all header fields except those matched by
`rmail-ignored-headers'."
  :type '(choice regexp (const :tag "All"))
  :group 'rmail-headers)

373
;;;###autoload
374
(defcustom rmail-retry-ignored-headers "^x-authentication-warning:\\|content-type:\\|content-transfer-encoding:\\|mime-version:"
375
  "Headers that should be stripped when retrying a failed message."
376
  :type '(choice regexp (const nil :tag "None"))
377 378
  :group 'rmail-headers
  :version "23.1")	   ; added content-type/encoding, mime-version
379

380
;;;###autoload
381 382
(defcustom rmail-highlighted-headers "^From:\\|^Subject:"
  "Regexp to match Header fields that Rmail should normally highlight.
383
A value of nil means don't highlight.  Uses the face `rmail-highlight'."
384 385 386 387 388
  :type 'regexp
  :group 'rmail-headers)

(defface rmail-highlight
  '((t (:inherit highlight)))
389 390
  "Face to use for highlighting the most important header fields.
The variable `rmail-highlighted-headers' specifies which headers."
391 392 393 394 395
  :group 'rmail-headers
  :version "22.1")

(defface rmail-header-name
  '((t (:inherit font-lock-function-name-face)))
396 397 398
  "Face to use for highlighting the header names.
The variable `rmail-font-lock-keywords' specifies which headers
get highlighted."
399 400 401
  :group 'rmail-headers
  :version "23.1")

402 403
(defcustom rmail-delete-after-output nil
  "Non-nil means automatically delete a message that is copied to a file."
404 405 406 407
  :type 'boolean
  :group 'rmail-files)

;;;###autoload
408
(defcustom rmail-primary-inbox-list nil
409 410 411 412 413 414 415
  "List of files that are inboxes for your primary mail file `rmail-file-name'.
If this is nil, uses the environment variable MAIL.  If that is
unset, uses a file named by the function `user-login-name' in the
directory `rmail-spool-directory' (whose value depends on the
operating system).  For example, \"/var/mail/USER\"."
  ;; Don't use backquote here, because we don't want to need it at load time.
  ;; (That must be an old comment - it's dumped these days.)
416 417
  :type (list 'choice '(const :tag "Default" nil)
	      (list 'repeat ':value (list (or (getenv "MAIL")
418 419
					      (concat rmail-spool-directory
						      (user-login-name))))
420 421 422 423 424
		    'file))
  :group 'rmail-retrieve
  :group 'rmail-files)

(defcustom rmail-mail-new-frame nil
425
  "Non-nil means Rmail makes a new frame for composing outgoing mail.
426 427 428 429 430 431 432
This is handy if you want to preserve the window configuration of
the frame where you have the RMAIL buffer displayed."
  :type 'boolean
  :group 'rmail-reply)

;;;###autoload
(defcustom rmail-secondary-file-directory "~/"
433
  "Directory for additional secondary Rmail files."
434 435 436 437
  :type 'directory
  :group 'rmail-files)
;;;###autoload
(defcustom rmail-secondary-file-regexp "\\.xmail$"
438
  "Regexp for which files are secondary Rmail files."
439 440 441 442
  :type 'regexp
  :group 'rmail-files)

(defcustom rmail-confirm-expunge 'y-or-n-p
443
  "Whether and how to ask for confirmation before expunging deleted messages."
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
  :type '(choice (const :tag "No confirmation" nil)
		 (const :tag "Confirm with y-or-n-p" y-or-n-p)
		 (const :tag "Confirm with yes-or-no-p" yes-or-no-p))
  :version "21.1"
  :group 'rmail-files)

;;;###autoload
(defvar rmail-mode-hook nil
  "List of functions to call when Rmail is invoked.")

(defvar rmail-get-new-mail-hook nil
  "List of functions to call when Rmail has retrieved new mail.")

;;;###autoload
(defcustom rmail-show-message-hook nil
  "List of functions to call when Rmail displays a message."
  :type 'hook
  :options '(goto-address)
  :group 'rmail)

(defvar rmail-quit-hook nil
  "List of functions to call when quitting out of Rmail.")

(defvar rmail-delete-message-hook nil
  "List of functions to call when Rmail deletes a message.
When the hooks are called, the message has been marked deleted but is
still the current message in the Rmail buffer.")

;; These may be altered by site-init.el to match the format of mmdf files
;;  delimiting used on a given host (delim1 and delim2 from the config
;;  files).

(defvar rmail-mmdf-delim1 "^\001\001\001\001\n"
  "Regexp marking the start of an mmdf message.")
(defvar rmail-mmdf-delim2 "^\001\001\001\001\n"
  "Regexp marking the end of an mmdf message.")

481 482 483 484 485 486 487
;; FIXME Post-mbox, this is now unused.
;; In Emacs-22, this was called:
;;  i) the very first time a message was shown.
;; ii) when toggling the headers to the normal state, every time.
;; It's not clear what it should do now, since there is nothing that
;; records when a message is shown for the first time (unseen is not
;; necessarily the same thing).
488 489 490 491 492 493 494 495 496 497 498 499 500
(defcustom rmail-message-filter nil
  "If non-nil, a filter function for new messages in RMAIL.
Called with region narrowed to the message, including headers,
before obeying `rmail-ignored-headers'."
  :group 'rmail-headers
  :type '(choice (const nil) function))

(defcustom rmail-automatic-folder-directives nil
  "List of directives specifying where to put a message.
Each element of the list is of the form:

  (FOLDERNAME FIELD REGEXP [ FIELD REGEXP ] ... )

501 502
Where FOLDERNAME is the name of a folder to put the message.
If any of the field regexp's are nil, then it is ignored.
503 504 505 506 507 508 509 510 511 512 513 514 515

If FOLDERNAME is \"/dev/null\", it is deleted.
If FOLDERNAME is nil then it is deleted, and skipped.

FIELD is the plain text name of a field in the message, such as
\"subject\" or \"from\".  A FIELD of \"to\" will automatically include
all text from the \"cc\" field as well.

REGEXP is an expression to match in the preceeding specified FIELD.
FIELD/REGEXP pairs continue in the list.

examples:
  (\"/dev/null\" \"from\" \"@spam.com\") ; delete all mail from spam.com
516 517 518
  (\"RMS\" \"from\" \"rms@\") ; save all mail from RMS.

Note that this is only applied in the folder specifed by `rmail-file-name'."
519 520 521 522 523 524 525 526 527 528 529 530 531 532 533
  :group 'rmail
  :version "21.1"
  :type '(repeat (sexp :tag "Directive")))

(defvar rmail-reply-prefix "Re: "
  "String to prepend to Subject line when replying to a message.")

;; Some mailers use "Re(2):" or "Re^2:" or "Re: Re:" or "Re[2]:".
;; This pattern should catch all the common variants.
;; rms: I deleted the change to delete tags in square brackets
;; because they mess up RT tags.
(defvar rmail-reply-regexp "\\`\\(Re\\(([0-9]+)\\|\\[[0-9]+\\]\\|\\^[0-9]+\\)?: *\\)*"
  "Regexp to delete from Subject line before inserting `rmail-reply-prefix'.")

(defcustom rmail-display-summary nil
534
  "If non-nil, Rmail always displays the summary buffer."
535 536 537 538 539 540 541 542 543 544 545 546
  :group 'rmail-summary
  :type 'boolean)

(defvar rmail-inbox-list nil)
(put 'rmail-inbox-list 'permanent-local t)

(defvar rmail-buffer nil
  "The RMAIL buffer related to the current buffer.
In an RMAIL buffer, this holds the RMAIL buffer itself.
In a summary buffer, this holds the RMAIL buffer it is a summary for.")
(put 'rmail-buffer 'permanent-local t)

547 548 549 550 551 552 553 554
(defvar rmail-was-converted nil
  "Non-nil in an Rmail buffer that was just converted from Babyl format.")
(put 'rmail-was-converted 'permanent-local t)

(defvar rmail-seriously-modified nil
  "Non-nil in an Rmail buffer that has been modified in a major way.")
(put 'rmail-seriously-modified 'permanent-local t)

555 556
;; Message counters and markers.  Deleted flags.

557 558
(defvar rmail-current-message nil
  "Integer specifying the message currently being displayed in this folder.")
559 560
(put 'rmail-current-message 'permanent-local t)

561 562 563
(defvar rmail-total-messages nil
  "Integer specifying the total number of messages in this folder.
Includes deleted messages.")
564 565
(put 'rmail-total-messages 'permanent-local t)

566 567 568
(defvar rmail-message-vector nil
  "Vector of markers specifying the start and end of each message.
Element N and N+1 specify the start and end of message N.")
569 570
(put 'rmail-message-vector 'permanent-local t)

571 572 573 574
(defvar rmail-deleted-vector nil
  "A string of length `rmail-total-messages' plus one.
Character N is either a space or \"D\", according to whether
message N is deleted or not.")
575 576 577 578 579 580 581 582 583 584 585 586 587 588 589
(put 'rmail-deleted-vector 'permanent-local t)

(defvar rmail-msgref-vector nil
  "In an Rmail buffer, a vector whose Nth element is a list (N).
When expunging renumbers messages, these lists are modified
by substituting the new message number into the existing list.")
(put 'rmail-msgref-vector 'permanent-local t)

(defvar rmail-overlay-list nil)
(put 'rmail-overlay-list 'permanent-local t)

;; These are used by autoloaded rmail-summary.

(defvar rmail-summary-buffer nil)
(put 'rmail-summary-buffer 'permanent-local t)
590 591 592
(defvar rmail-summary-vector nil
  "In an Rmail buffer, vector of (newline-terminated) strings.
Element N specifies the summary line for message N+1.")
593 594 595 596 597 598
(put 'rmail-summary-vector 'permanent-local t)

;; Rmail buffer swapping variables.

(defvar rmail-buffer-swapped nil
  "If non-nil, `rmail-buffer' is swapped with `rmail-view-buffer'.")
599
(make-variable-buffer-local 'rmail-buffer-swapped)
600
(put 'rmail-buffer-swapped 'permanent-local t)
601 602 603

(defvar rmail-view-buffer nil
  "Buffer which holds RMAIL message for MIME displaying.")
604
(make-variable-buffer-local 'rmail-view-buffer)
605 606 607 608 609 610 611 612 613 614 615 616 617 618
(put 'rmail-view-buffer 'permanent-local t)

;; `Sticky' default variables.

;; Last individual label specified to a or k.
(defvar rmail-last-label nil)

;; Last set of values specified to C-M-n, C-M-p, C-M-s or C-M-l.
(defvar rmail-last-multi-labels nil)

(defvar rmail-last-regexp nil)
(put 'rmail-last-regexp 'permanent-local t)

(defcustom rmail-default-file "~/xmail"
619
  "Default file name for \\[rmail-output]."
620 621 622
  :type 'file
  :group 'rmail-files)
(defcustom rmail-default-body-file "~/mailout"
623
  "Default file name for \\[rmail-output-body-to-file]."
624 625 626 627 628 629 630 631 632 633 634 635 636
  :type 'file
  :group 'rmail-files
  :version "20.3")

;; Mule and MIME related variables.

;;;###autoload
(defvar rmail-file-coding-system nil
  "Coding system used in RMAIL file.

This is set to nil by default.")

(defcustom rmail-enable-mime nil
637
  "If non-nil, RMAIL uses MIME features.
638 639 640 641
If the value is t, RMAIL automatically shows MIME decoded message.
If the value is neither t nor nil, RMAIL does not show MIME decoded message
until a user explicitly requires it.

642 643
Even if the value is non-nil, you can't use MIME features
unless the feature specified by `rmail-mime-feature' is available."
644 645 646 647 648 649 650 651
  :type '(choice (const :tag "on" t)
		 (const :tag "off" nil)
		 (other :tag "when asked" ask))
  :group 'rmail)

(defvar rmail-enable-mime-composing nil
  "*If non-nil, RMAIL uses `rmail-insert-mime-forwarded-message-function' to forward.")

652
;; FIXME unused.
653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668
(defvar rmail-show-mime-function nil
  "Function to show MIME decoded message of RMAIL file.
This function is called when `rmail-enable-mime' is non-nil.
It is called with no argument.")

;;;###autoload
(defvar rmail-insert-mime-forwarded-message-function nil
  "Function to insert a message in MIME format so it can be forwarded.
This function is called if `rmail-enable-mime' or
`rmail-enable-mime-composing' is non-nil.
It is called with one argument FORWARD-BUFFER, which is a
buffer containing the message to forward.  The current buffer
is the outgoing mail buffer.")

(defvar rmail-insert-mime-resent-message-function nil
  "Function to insert a message in MIME format so it can be resent.
669
This function is called by `rmail-resend' if `rmail-enable-mime' is non-nil.
670 671 672 673
It is called with one argument FORWARD-BUFFER, which is a
buffer containing the message to forward.  The current buffer
is the outgoing mail buffer.")

674 675
;; FIXME one might want to pass a LIMIT, as per
;; rmail-search-mime-header-function.
676 677
(defvar rmail-search-mime-message-function nil
  "Function to check if a regexp matches a MIME message.
678 679 680
This function is called by `rmail-search-message' if
`rmail-enable-mime' is non-nil.  It is called (with point at the
start of the message) with two arguments MSG and REGEXP, where
681 682 683 684
MSG is the message number, REGEXP is the regular expression.")

(defvar rmail-search-mime-header-function nil
  "Function to check if a regexp matches a header of MIME message.
685 686 687 688 689
This function is called by `rmail-message-regexp-p-1' if
`rmail-enable-mime' is non-nil.  It is called (with point at the
start of the header) with three arguments MSG, REGEXP, and LIMIT,
where MSG is the message number, REGEXP is the regular
expression, LIMIT is the position specifying the end of header.")
690 691 692 693 694 695 696 697 698

(defvar rmail-mime-feature 'rmail-mime
  "Feature to require to load MIME support in Rmail.
When starting Rmail, if `rmail-enable-mime' is non-nil,
this feature is required with `require'.

The default value is `rmail-mime'.  This feature is provided by
the rmail-mime package available at <http://www.m17n.org/rmail-mime/>.")

699
;; FIXME this is unused.
700 701 702 703 704
(defvar rmail-decode-mime-charset t
  "*Non-nil means a message is decoded by MIME's charset specification.
If this variable is nil, or the message has not MIME specification,
the message is decoded as normal way.

705
If the variable `rmail-enable-mime' is non-nil, this variable is
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
ignored, and all the decoding work is done by a feature specified by
the variable `rmail-mime-feature'.")

(defvar rmail-mime-charset-pattern
  (concat "^content-type:[ \t]*text/plain;"
	  "\\(?:[ \t\n]*\\(?:format\\|delsp\\)=\"?[-a-z0-9]+\"?;\\)*"
	  "[ \t\n]*charset=\"?\\([^ \t\n\";]+\\)\"?")
  "Regexp to match MIME-charset specification in a header of message.
The first parenthesized expression should match the MIME-charset name.")


(defvar rmail-unix-mail-delimiter
  (let ((time-zone-regexp
	 (concat "\\([A-Z]?[A-Z]?[A-Z][A-Z]\\( DST\\)?"
		 "\\|[-+]?[0-9][0-9][0-9][0-9]"
		 "\\|"
		 "\\) *")))
    (concat
     "From "

     ;; Many things can happen to an RFC 822 mailbox before it is put into
     ;; a `From' line.  The leading phrase can be stripped, e.g.
     ;; `Joe <@w.x:joe@y.z>' -> `<@w.x:joe@y.z>'.  The <> can be stripped, e.g.
     ;; `<@x.y:joe@y.z>' -> `@x.y:joe@y.z'.  Everything starting with a CRLF
     ;; can be removed, e.g.
     ;;		From: joe@y.z (Joe	K
     ;;			User)
     ;; can yield `From joe@y.z (Joe 	K Fri Mar 22 08:11:15 1996', and
     ;;		From: Joe User
     ;;			<joe@y.z>
     ;; can yield `From Joe User Fri Mar 22 08:11:15 1996'.
     ;; The mailbox can be removed or be replaced by white space, e.g.
     ;;		From: "Joe User"{space}{tab}
     ;;			<joe@y.z>
     ;; can yield `From {space}{tab} Fri Mar 22 08:11:15 1996',
     ;; where {space} and {tab} represent the Ascii space and tab characters.
     ;; We want to match the results of any of these manglings.
     ;; The following regexp rejects names whose first characters are
     ;; obviously bogus, but after that anything goes.
     "\\([^\0-\b\n-\r\^?].*\\)? "

     ;; The time the message was sent.
     "\\([^\0-\r \^?]+\\) +"				; day of the week
     "\\([^\0-\r \^?]+\\) +"				; month
     "\\([0-3]?[0-9]\\) +"				; day of month
     "\\([0-2][0-9]:[0-5][0-9]\\(:[0-6][0-9]\\)?\\) *"	; time of day

     ;; Perhaps a time zone, specified by an abbreviation, or by a
     ;; numeric offset.
     time-zone-regexp

     ;; The year.
     " \\([0-9][0-9]+\\) *"

     ;; On some systems the time zone can appear after the year, too.
     time-zone-regexp

     ;; Old uucp cruft.
     "\\(remote from .*\\)?"

     "\n"))
767 768
  "Regexp matching the delimiter of messages in UNIX mail format
\(UNIX From lines), minus the initial ^.  Note that if you change
769
this expression, you must change the code in `rmail-nuke-pinhead-header'
770
that knows the exact ordering of the \\( \\) subexpressions.")
771

772 773 774
;; FIXME the rmail-header-name headers ought to be customizable.
;; It seems a bit arbitrary, for example, that all of the Date: line
;; gets highlighted.
775 776 777 778 779 780 781 782
(defvar rmail-font-lock-keywords
  ;; These are all matched case-insensitively.
  (eval-when-compile
    (let* ((cite-chars "[>|}]")
	   (cite-prefix "a-z")
	   (cite-suffix (concat cite-prefix "0-9_.@-`'\"")))
      (list '("^\\(From\\|Sender\\|Resent-From\\):"
	      . 'rmail-header-name)
783 784
	    '("^\\(Mail-\\)?Reply-To:.*$" . 'rmail-header-name)
	    ;; FIXME Mail-Followup-To should probably be here too.
785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818
	    '("^Subject:" . 'rmail-header-name)
	    '("^X-Spam-Status:" . 'rmail-header-name)
	    '("^\\(To\\|Apparently-To\\|Cc\\|Newsgroups\\):"
	      . 'rmail-header-name)
	    ;; Use MATCH-ANCHORED to effectively anchor the regexp left side.
	    `(,cite-chars
	      (,(concat "\\=[ \t]*"
			"\\(\\(\\([" cite-prefix "]+[" cite-suffix "]*\\)?"
			"\\(" cite-chars "[ \t]*\\)\\)+\\)"
			"\\(.*\\)")
	       (beginning-of-line) (end-of-line)
	       (1 font-lock-comment-delimiter-face nil t)
	       (5 font-lock-comment-face nil t)))
	    '("^\\(X-[a-z0-9-]+\\|In-reply-to\\|Date\\):.*\\(\n[ \t]+.*\\)*$"
	      . 'rmail-header-name))))
  "Additional expressions to highlight in Rmail mode.")

;; Perform BODY in the summary buffer
;; in such a way that its cursor is properly updated in its own window.
(defmacro rmail-select-summary (&rest body)
  `(let ((total rmail-total-messages))
     (if (rmail-summary-displayed)
	 (let ((window (selected-window)))
	   (save-excursion
	     (unwind-protect
		 (progn
		   (pop-to-buffer rmail-summary-buffer)
		   ;; rmail-total-messages is a buffer-local var
		   ;; in the rmail buffer.
		   ;; This way we make it available for the body
		   ;; even tho the rmail buffer is not current.
		   (let ((rmail-total-messages total))
		     ,@body))
	       (select-window window))))
819
       (with-current-buffer rmail-summary-buffer
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
	 (let ((rmail-total-messages total))
	   ,@body)))
     (rmail-maybe-display-summary)))

;;;; *** Rmail Mode ***

(defun rmail-require-mime-maybe ()
  "Require `rmail-mime-feature' if that is non-nil.
Signal an error and set `rmail-mime-feature' to nil if the feature
isn't provided."
  (when rmail-enable-mime
    (condition-case err
	(require rmail-mime-feature)
      (error
       (display-warning
	'rmail
	(format "Although MIME support is requested
by setting `rmail-enable-mime' to non-nil, the required feature
`%s' (the value of `rmail-mime-feature')
is not available in the current session.
So, the MIME support is turned off for the moment."
		rmail-mime-feature)
	:warning)
       (setq rmail-enable-mime nil)))))


;;;###autoload
(defun rmail (&optional file-name-arg)
  "Read and edit incoming mail.
849 850
Moves messages into file named by `rmail-file-name' and edits that
file in RMAIL Mode.
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
Type \\[describe-mode] once editing that file, for a list of RMAIL commands.

May be called with file name as argument; then performs rmail editing on
that file, but does not copy any new mail into the file.
Interactively, if you supply a prefix argument, then you
have a chance to specify a file name with the minibuffer.

If `rmail-display-summary' is non-nil, make a summary for this RMAIL file."
  (interactive (if current-prefix-arg
		   (list (read-file-name "Run rmail on RMAIL file: "))))
  (rmail-require-mime-maybe)
  (let* ((file-name (expand-file-name (or file-name-arg rmail-file-name)))
	 ;; Use find-buffer-visiting, not get-file-buffer, for those users
	 ;; who have find-file-visit-truename set to t.
	 (existed (find-buffer-visiting file-name))
	 run-mail-hook mail-buf msg-shown)
    ;; Determine if an existing mail file has been changed behind the
    ;; scene...
    (if (and existed (not (verify-visited-file-modtime existed)))
	;; The mail file has been changed.  Revisit it and reset the
	;; message state variables when in rmail mode.
	(progn
	  (find-file file-name)
	  (when (and (verify-visited-file-modtime existed)
		     (eq major-mode 'rmail-mode))
876
	    (rmail-swap-buffers-maybe)
877 878 879
	    (rmail-set-message-counters)))
      ;; The mail file is either unchanged or not visited.  Visit it.
      (switch-to-buffer
880 881 882 883 884 885
       (let ((enable-local-variables nil)
	     ;; Force no-conversion by default, since that's what
	     ;; pre-mbox Rmail did with BABYL files (via
	     ;; auto-coding-regexp-alist).
	     (coding-system-for-read
	      (or coding-system-for-read 'no-conversion)))
886
	 (find-file-noselect file-name))))
887 888
    ;; Ensure that the collection and view buffers are in sync and
    ;; ensure that a message is not being edited.
889 890 891 892 893 894
    (if (eq major-mode 'rmail-mode)
	(rmail-swap-buffers-maybe))
    (if (eq major-mode 'rmail-edit-mode)
	(error "Exit Rmail Edit mode before getting new mail"))
    (or (and existed (> (buffer-size) 0))
	(setq run-mail-hook t))
895
    ;; Ensure that the Rmail file is in mbox format, the buffer is in
896 897 898 899 900 901 902 903 904 905 906 907
    ;; Rmail mode and has been scanned to find all the messages
    ;; (setting the global message variables in the process).
    (rmail-convert-file-maybe)
    (unless (eq major-mode 'rmail-mode)
      (rmail-mode-2))
    (goto-char (point-max))
    (rmail-maybe-set-message-counters)
    (setq mail-buf rmail-buffer)
    ;; Show the first unread message and process summary mode.
    (unwind-protect
	;; Only get new mail when there is not a file name argument.
	(unless file-name-arg
908
	  (setq msg-shown (rmail-get-new-mail)))
909 910
      (progn
	(set-buffer mail-buf)
911 912
	(or msg-shown
	    (rmail-show-message (rmail-first-unseen-message)))
913 914 915 916 917 918 919 920 921 922
	(if rmail-display-summary (rmail-summary))
	(rmail-construct-io-menu)
	(if run-mail-hook
	    (run-hooks 'rmail-mode-hook))))))

(defun rmail-convert-file-maybe ()
  "Determine if the file needs to be converted to mbox format."
  (widen)
  (goto-char (point-min))
  ;; Detect previous Babyl format files.
923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938
  (let ((case-fold-search nil))
    (cond ((looking-at "BABYL OPTIONS:")
	   ;; The file is Babyl version 5.  Use unrmail to convert
	   ;; it.
	   (rmail-convert-babyl-to-mbox))
	  ((looking-at "Version: 5\n")
	   ;; Losing babyl file made by old version of Rmail.  Fix the
	   ;; babyl file header and use unrmail to convert to mbox
	   ;; format.
	   (let ((buffer-read-only nil))
	     (insert "BABYL OPTIONS: -*- rmail -*-\n")
	     (rmail-convert-babyl-to-mbox)))
	  ((equal (point-min) (point-max))
	   (message "Empty Rmail file."))
	  ((looking-at "From "))
	  (t (error "Invalid mbox file")))))
939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957

(defun rmail-error-bad-format (&optional msgnum)
  "Report that the buffer is not in the mbox file format.
MSGNUM, if present, indicates the malformed message."
  (if msgnum
      (error "Message %d is not a valid RFC2822 message" msgnum)
    (error "Message is not a valid RFC2822 message")))

(defun rmail-convert-babyl-to-mbox ()
  "Convert the mail file from Babyl version 5 to mbox.
This function also reinitializes local variables used by Rmail."
  (let ((old-file (make-temp-file "rmail"))
	(new-file (make-temp-file "rmail")))
    (unwind-protect
	(progn
	  (kill-all-local-variables)
	  (write-region (point-min) (point-max) old-file)
	  (unrmail old-file new-file)
	  (message "Replacing BABYL format with mbox format...")
958
	  (let ((inhibit-read-only t)
959 960
		(coding-system-for-read 'raw-text)
		(buffer-undo-list t))
961
	    (erase-buffer)
962
	    (insert-file-contents new-file)
963 964 965
	    ;; Rmail buffers need to be saved with Unix EOLs, or else
	    ;; the format will not be recognized.
	    (set-buffer-file-coding-system 'raw-text-unix)
966 967 968
	    (rmail-mode-1)
	    (rmail-perm-variables)
	    (rmail-variables)
969
	    (setq rmail-was-converted t)
970 971 972 973 974 975 976 977 978
	    (goto-char (point-max))
	    (rmail-set-message-counters))
	  (message "Replacing BABYL format with mbox format...done"))
      (delete-file old-file)
      (delete-file new-file))))

(defun rmail-get-coding-system ()
  "Return a suitable coding system to use for the current mail message.
The buffer is expected to be narrowed to just the header of the message."
979 980
  (save-excursion
    (goto-char (point-min))
981
    (if (re-search-forward rmail-mime-charset-pattern nil t)
982
	(coding-system-from-name (match-string 1))
983 984 985 986
      'undecided)))

;;; Set up Rmail mode keymaps

987 988 989 990 991 992 993 994 995
(defvar rmail-mode-map
  (let ((map (make-keymap)))
    (suppress-keymap map)
    (define-key map "a"      'rmail-add-label)
    (define-key map "b"      'rmail-bury)
    (define-key map "c"      'rmail-continue)
    (define-key map "d"      'rmail-delete-forward)
    (define-key map "\C-d"   'rmail-delete-backward)
    (define-key map "e"      'rmail-edit-current-message)
996
    ;; If you change this, change the rmail-resend menu-item's :keys.
997 998 999 1000
    (define-key map "f"      'rmail-forward)
    (define-key map "g"      'rmail-get-new-mail)
    (define-key map "h"      'rmail-summary)
    (define-key map "i"      'rmail-input)
1001
    (define-key map "j"      'rmail-show-message)
1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026
    (define-key map "k"      'rmail-kill-label)
    (define-key map "l"      'rmail-summary-by-labels)
    (define-key map "\e\C-h" 'rmail-summary)
    (define-key map "\e\C-l" 'rmail-summary-by-labels)
    (define-key map "\e\C-r" 'rmail-summary-by-recipients)
    (define-key map "\e\C-s" 'rmail-summary-by-regexp)
    (define-key map "\e\C-t" 'rmail-summary-by-topic)
    (define-key map "m"      'rmail-mail)
    (define-key map "\em"    'rmail-retry-failure)
    (define-key map "n"      'rmail-next-undeleted-message)
    (define-key map "\en"    'rmail-next-message)
    (define-key map "\e\C-n" 'rmail-next-labeled-message)
    (define-key map "o"      'rmail-output)
    (define-key map "\C-o"   'rmail-output-as-seen)
    (define-key map "p"      'rmail-previous-undeleted-message)
    (define-key map "\ep"    'rmail-previous-message)
    (define-key map "\e\C-p" 'rmail-previous-labeled-message)
    (define-key map "q"      'rmail-quit)
    (define-key map "r"      'rmail-reply)
    ;; I find I can't live without the default M-r command -- rms.
    ;;  (define-key rmail-mode-map "\er"  'rmail-search-backwards)
    (define-key map "s"      'rmail-expunge-and-save)
    (define-key map "\es"    'rmail-search)
    (define-key map "t"      'rmail-toggle-header)
    (define-key map "u"      'rmail-undelete-previous-message)
1027
    (define-key map "v"      'rmail-mime)
1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047
    (define-key map "w"      'rmail-output-body-to-file)
    (define-key map "\C-c\C-w"    'rmail-widen)
    (define-key map "x"      'rmail-expunge)
    (define-key map "."      'rmail-beginning-of-message)
    (define-key map "/"      'rmail-end-of-message)
    (define-key map "<"      'rmail-first-message)
    (define-key map ">"      'rmail-last-message)
    (define-key map " "      'scroll-up)
    (define-key map "\177"   'scroll-down)
    (define-key map "?"      'describe-mode)
    (define-key map "\C-c\C-s\C-d" 'rmail-sort-by-date)
    (define-key map "\C-c\C-s\C-s" 'rmail-sort-by-subject)
    (define-key map "\C-c\C-s\C-a" 'rmail-sort-by-author)
    (define-key map "\C-c\C-s\C-r" 'rmail-sort-by-recipient)
    (define-key map "\C-c\C-s\C-c" 'rmail-sort-by-correspondent)
    (define-key map "\C-c\C-s\C-l" 'rmail-sort-by-lines)
    (define-key map "\C-c\C-s\C-k" 'rmail-sort-by-labels)
    (define-key map "\C-c\C-n" 'rmail-next-same-subject)
    (define-key map "\C-c\C-p" 'rmail-previous-same-subject)

1048

1049 1050 1051 1052
    (define-key map [menu-bar] (make-sparse-keymap))

    (define-key map [menu-bar classify]
      (cons "Classify" (make-sparse-keymap "Classify")))
1053

1054 1055
    (define-key map [menu-bar classify input-menu]
      nil)
1056

1057 1058
    (define-key map [menu-bar classify output-menu]
      nil)
1059

1060 1061
    (define-key map [menu-bar classify output-body]
      '("Output body to file..." . rmail-output-body-to-file))
1062

1063 1064
    (define-key map [menu-bar classify output-inbox]
      '("Output..." . rmail-output))
1065

1066 1067
    (define-key map [menu-bar classify output]
      '("Output as seen..." . rmail-output-as-seen))
1068

1069 1070
    (define-key map [menu-bar classify kill-label]
      '("Kill Label..." . rmail-kill-label))
1071

1072 1073
    (define-key map [menu-bar classify add-label]
      '("Add Label..." . rmail-add-label))
1074

1075 1076
    (define-key map [menu-bar summary]
      (cons "Summary" (make-sparse-keymap "Summary")))
1077

1078 1079
    (define-key map [menu-bar summary senders]
      '("By Senders..." . rmail-summary-by-senders))
1080

1081 1082
    (define-key map [menu-bar summary labels]
      '("By Labels..." . rmail-summary-by-labels))
1083

1084 1085
    (define-key map [menu-bar summary recipients]
      '("By Recipients..." . rmail-summary-by-recipients))
1086

1087 1088
    (define-key map [menu-bar summary topic]
      '("By Topic..." . rmail-summary-by-topic))
1089

1090 1091
    (define-key map [menu-bar summary regexp]
      '("By Regexp..." . rmail-summary-by-regexp))
1092

1093 1094
    (define-key map [menu-bar summary all]
      '("All" . rmail-summary))
1095

1096 1097
    (define-key map [menu-bar mail]
      (cons "Mail" (make-sparse-keymap "Mail")))
1098

1099 1100
    (define-key map [menu-bar mail rmail-get-new-mail]
      '("Get New Mail" . rmail-get-new-mail))
1101

1102 1103
    (define-key map [menu-bar mail lambda]
      '("----"))
1104

1105 1106
    (define-key map [menu-bar mail continue]
      '("Continue" . rmail-continue))
1107

1108
    (define-key map [menu-bar mail resend]
1109
    '(menu-item "Resend..." rmail-resend :keys "C-u f"))
1110

1111 1112
    (define-key map [menu-bar mail forward]
      '("Forward" . rmail-forward))
1113

1114 1115
    (define-key map [menu-bar mail retry]
      '("Retry" . rmail-retry-failure))
1116

1117 1118
    (define-key map [menu-bar mail reply]
      '("Reply" . rmail-reply))
1119

1120 1121
    (define-key map [menu-bar mail mail]
      '("Mail" . rmail-mail))
1122

1123 1124
    (define-key map [menu-bar delete]
      (cons "Delete" (make-sparse-keymap "Delete")))
1125

1126 1127
    (define-key map [menu-bar delete expunge/save]
      '("Expunge/Save" . rmail-expunge-and-save))
1128

1129 1130
    (define-key map [menu-bar delete expunge]
      '("Expunge" . rmail-expunge))
1131

1132 1133
    (define-key map [menu-bar delete undelete]
      '("Undelete" . rmail-undelete-previous-message))
1134

1135 1136
    (define-key map [menu-bar delete delete]
      '("Delete" . rmail-delete-forward))
1137

1138 1139
    (define-key map [menu-bar move]
      (cons "Move" (make-sparse-keymap "Move")))
1140

1141 1142
    (define-key map [menu-bar move search-back]
      '("Search Back..." . rmail-search-backwards))
1143

1144 1145
    (define-key map [menu-bar move search]
      '("Search..." . rmail-search))
1146

1147 1148
    (define-key map [menu-bar move previous]
      '("Previous Nondeleted" . rmail-previous-undeleted-message))
1149

1150 1151
    (define-key map [menu-bar move next]
      '("Next Nondeleted" . rmail-next-undeleted-message))
1152

1153 1154
    (define-key map [menu-bar move last]
      '("Last" . rmail-last-message))
1155

1156 1157
    (define-key map [menu-bar move first]
      '("First" . rmail-first-message))
1158

1159 1160
    (define-key map [menu-bar move previous]
      '("Previous" . rmail-previous-message))
1161

1162 1163
    (define-key map [menu-bar move next]
      '("Next" . rmail-next-message))
1164

1165 1166
   map)
  "Keymap used in Rmail mode.")
1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204

;; Rmail toolbar
(defvar rmail-tool-bar-map
  (let ((map (make-sparse-keymap)))
    (tool-bar-local-item-from-menu 'rmail-get-new-mail "mail/inbox"
				   map rmail-mode-map)
    (tool-bar-local-item-from-menu 'rmail-next-undeleted-message "right-arrow"
				   map rmail-mode-map)
    (tool-bar-local-item-from-menu 'rmail-previous-undeleted-message "left-arrow"
				   map rmail-mode-map)
    (tool-bar-local-item-from-menu 'rmail-search "search"
				   map rmail-mode-map)
    (tool-bar-local-item-from-menu 'rmail-input "open"
				   map rmail-mode-map)
    (tool-bar-local-item-from-menu 'rmail-mail "mail/compose"
				   map rmail-mode-map)
    (tool-bar-local-item-from-menu 'rmail-reply "mail/reply-all"
				   map rmail-mode-map)
    (tool-bar-local-item-from-menu 'rmail-forward "mail/forward"
				   map rmail-mode-map)
    (tool-bar-local-item-from-menu 'rmail-delete-forward "close"
				   map rmail-mode-map)
    (tool-bar-local-item-from-menu 'rmail-output "mail/move"
				   map rmail-mode-map)
    (tool-bar-local-item-from-menu 'rmail-output-body-to-file "mail/save"
				   map rmail-mode-map)
    (tool-bar-local-item-from-menu 'rmail-expunge "delete"
				   map rmail-mode-map)
    map))



;; Rmail mode is suitable only for specially formatted data.
(put 'rmail-mode 'mode-class 'special)

(defun rmail-mode-kill-summary ()
  (if rmail-summary-buffer (kill-buffer rmail-summary-buffer)))

1205 1206
(defvar rmail-enable-multibyte)         ; dynamically bound

1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222
;;;###autoload
(defun rmail-mode ()
  "Rmail Mode is used by \\<rmail-mode-map>\\[rmail] for editing Rmail files.
All normal editing commands are turned off.
Instead, these commands are available:

\\[rmail-beginning-of-message]	Move point to front of this message.
\\[rmail-end-of-message]	Move point to bottom of this message.
\\[scroll-up]	Scroll to next screen of this message.
\\[scroll-down]	Scroll to previous screen of this message.
\\[rmail-next-undeleted-message]	Move to Next non-deleted message.
\\[rmail-previous-undeleted-message]	Move to Previous non-deleted message.
\\[rmail-next-message]	Move to Next message whether deleted or not.
\\[rmail-previous-message]	Move to Previous message whether deleted or not.
\\[rmail-first-message]	Move to the first message in Rmail file.
\\[rmail-last-message]	Move to the last message in Rmail file.
1223
\\[rmail-show-message]	Jump to message specified by numeric position in file.
1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268
\\[rmail-search]	Search for string and show message it is found in.
\\[rmail-delete-forward]	Delete this message, move to next nondeleted.
\\[rmail-delete-backward]	Delete this message, move to previous nondeleted.
\\[rmail-undelete-previous-message]	Undelete message.  Tries current message, then earlier messages
	till a deleted message is found.
\\[rmail-edit-current-message]	Edit the current message.  \\[rmail-cease-edit] to return to Rmail.
\\[rmail-expunge]	Expunge deleted messages.
\\[rmail-expunge-and-save]	Expunge and save the file.
\\[rmail-quit]       Quit Rmail: expunge, save, then switch to another buffer.
\\[save-buffer] Save without expunging.
\\[rmail-get-new-mail]	Move new mail from system spool directory into this file.
\\[rmail-mail]	Mail a message (same as \\[mail-other-window]).
\\[rmail-continue]	Continue composing outgoing message started before.
\\[rmail-reply]	Reply to this message.  Like \\[rmail-mail] but initializes some fields.
\\[rmail-retry-failure]	Send this message again.  Used on a mailer failure message.
\\[rmail-forward]	Forward this message to another user.
\\[rmail-output]	Output (append) this message to another mail file.
\\[rmail-output-as-seen]	Output (append) this message to file as it's displayed.
\\[rmail-output-body-to-file]	Save message body to a file.  Default filename comes from Subject line.
\\[rmail-input]	Input Rmail file.  Run Rmail on that file.
\\[rmail-add-label]	Add label to message.  It will be displayed in the mode line.
\\[rmail-kill-label]	Kill label.  Remove a label from current message.
\\[rmail-next-labeled-message]   Move to Next message with specified label
          (label defaults to last one specified).
          Standard labels: filed, unseen, answered, forwarded, deleted.
          Any other label is present only if you add it with \\[rmail-add-label].
\\[rmail-previous-labeled-message]   Move to Previous message with specified label
\\[rmail-summary]	Show headers buffer, with a one line summary of each message.
\\[rmail-summary-by-labels]	Summarize only messages with particular label(s).
\\[rmail-summary-by-recipients]   Summarize only messages with particular recipient(s).
\\[rmail-summary-by-regexp]   Summarize only messages with particular regexp(s).
\\[rmail-summary-by-topic]   Summarize only messages with subject line regexp(s).
\\[rmail-toggle-header]	Toggle display of complete header."
  (interactive)
  (let ((finding-rmail-file (not (eq major-mode 'rmail-mode))))
    (rmail-mode-2)
    (when (and finding-rmail-file
	       (null coding-system-for-read)
	       default-enable-multibyte-characters)
      (let ((rmail-enable-multibyte t))
	(rmail-require-mime-maybe)
	(rmail-convert-file-maybe)
	(goto-char (point-max))
	(set-buffer-multibyte t)))
    (rmail-set-message-counters)
1269
    (rmail-show-message rmail-total-messages)
1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306
    (when finding-rmail-file
      (when rmail-display-summary
	(rmail-summary))
      (rmail-construct-io-menu))
    (run-mode-hooks 'rmail-mode-hook)))

(defun rmail-mode-2 ()
  (kill-all-local-variables)
  (rmail-mode-1)
  (rmail-perm-variables)
  (rmail-variables))

(defun rmail-mode-1 ()
  (setq major-mode 'rmail-mode)
  (setq mode-name "RMAIL")
  (setq buffer-read-only t)
  ;; No need to auto save RMAIL files in normal circumstances
  ;; because they contain no info except attribute changes
  ;; and deletion of messages.
  ;; The one exception is when messages are copied into another mbox buffer.
  ;; rmail-output enables auto save when you do that.
  (setq buffer-auto-save-file-name nil)
  (use-local-map rmail-mode-map)
  (set-syntax-table text-mode-syntax-table)
  (setq local-abbrev-table text-mode-abbrev-table)
  ;; Functions to support buffer swapping:
  (add-hook 'write-region-annotate-functions
	    'rmail-write-region-annotate nil t)
  (add-hook 'kill-buffer-hook 'rmail-mode-kill-buffer-hook nil t)
  (add-hook 'change-major-mode-hook 'rmail-change-major-mode-hook nil t))

(defun rmail-generate-viewer-buffer ()
  "Return a reusable buffer suitable for viewing messages.
Create the buffer if necessary."
  (let* ((suffix (file-name-nondirectory (or buffer-file-name (buffer-name))))
	 (name (format " *message-viewer %s*" suffix))
	 (buf (get-buffer name)))
1307 1308
    (or buf
	(generate-new-buffer name))))
1309

1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320
(defun rmail-swap-buffers ()
  "Swap text between current buffer and `rmail-view-buffer'.
This function preserves the current buffer's modified flag, and also
sets the current buffer's `buffer-file-coding-system' to that of
`rmail-view-buffer'."
  (let ((modp (buffer-modified-p))
	(coding
	 (with-current-buffer rmail-view-buffer
	   buffer-file-coding-system)))
    (buffer-swap-text rmail-view-buffer)
    (setq buffer-file-coding-system coding)
1321
    (restore-buffer-modified-p modp)))
1322 1323 1324 1325 1326 1327 1328

(defun rmail-buffers-swapped-p ()
  "Return non-nil if the message collection is in `rmail-view-buffer'."
  ;; This is analogous to tar-data-swapped-p in tar-mode.el.
  (and (buffer-live-p rmail-view-buffer)
       rmail-buffer-swapped))

1329 1330 1331 1332 1333 1334
(defun rmail-change-major-mode-hook ()
  ;; Bring the actual Rmail messages back into the main buffer.
  (when (rmail-buffers-swapped-p)
    (rmail-swap-buffers)
    (setq rmail-buffer-swapped nil)))

1335 1336 1337 1338 1339
(defun rmail-swap-buffers-maybe ()
  "Determine if the Rmail buffer is showing a message.
If so restore the actual mbox message collection."
  (with-current-buffer rmail-buffer
    (when (rmail-buffers-swapped-p)
1340
      (rmail-swap-buffers)
1341 1342
      (setq rmail-buffer-swapped nil))))

1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360
(defun rmail-modify-format ()
  "Warn if important modifications would change Rmail file's format."
  (with-current-buffer rmail-buffer
    (and rmail-was-converted
	 ;; If it's already modified, don't warn again.
	 (not rmail-seriously-modified)
	 (not
	  (yes-or-no-p
	   (message "After this, %s would be saved in mbox format.  Proceed? "
		    (buffer-name))))
	 (error "Aborted"))
    (setq rmail-seriously-modified t)))

(defun rmail-dont-modify-format ()
  (when (and rmail-was-converted (not rmail-seriously-modified))
    (set-buffer-modified-p nil)
    (message "Marking buffer unmodified to avoid rewriting Babyl file as mbox file")))

1361 1362 1363 1364 1365 1366 1367 1368
(defun rmail-mode-kill-buffer-hook ()
  (if (buffer-live-p rmail-view-buffer) (kill-buffer rmail-view-buffer)))

;; Set up the permanent locals associated with an Rmail file.
(defun rmail-perm-variables ()
  (make-local-variable 'rmail-last-regexp)
  (make-local-variable 'rmail-deleted-vector)
  (make-local-variable 'rmail-buffer)
1369 1370 1371 1372
  (make-local-variable 'rmail-was-converted)
  (setq rmail-was-converted nil)
  (make-local-variable 'rmail-seriously-modified)
  (setq rmail-seriously-modified nil)
1373 1374
  (setq rmail-buffer (current-buffer))
  (set-buffer-multibyte nil)
1375
  (with-current-buffer (setq rmail-view-buffer (rmail-generate-viewer-buffer))
1376
    (setq buffer-undo-list t)
1377
    (set (make-local-variable 'rmail-overlay-list) nil)
1378 1379 1380
    (set-buffer-multibyte t)
    ;; Force C-x C-s write Unix EOLs.
    (set-buffer-file-coding-system 'undecided-unix))
1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396
  (make-local-variable 'rmail-summary-buffer)
  (make-local-variable 'rmail-summary-vector)
  (make-local-variable 'rmail-current-message)
  (make-local-variable 'rmail-total-messages)
  (setq rmail-total-messages 0)
  (make-local-variable 'rmail-message-vector)
  (make-local-variable 'rmail-msgref-vector)
  (make-local-variable 'rmail-inbox-list)
  ;; Provide default set of inboxes for primary mail file ~/RMAIL.
  (and (null rmail-inbox-list)
       (or (equal buffer-file-name (expand-file-name rmail-file-name))
	   (equal buffer-file-truename
		  (abbreviate-file-name (file-truename rmail-file-name))))
       (setq rmail-inbox-list
	     (or rmail-primary-inbox-list
		 (list (or (getenv "MAIL")
1397
			   ;; FIXME expand-file-name?
1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435
			   (concat rmail-spool-directory
				   (user-login-name)))))))
  (set (make-local-variable 'tool-bar-map) rmail-tool-bar-map))

;; Set up the non-permanent locals associated with Rmail mode.
(defun rmail-variables ()
  ;; Turn off undo.  We turn it back on in rmail-edit.
  (setq buffer-undo-list t)
  ;; Don't let a local variables list in a message cause confusion.
  (make-local-variable 'local-enable-local-variables)
  (setq local-enable-local-variables nil)
  (make-local-variable 'revert-buffer-function)
  (setq revert-buffer-function 'rmail-revert)
  (make-local-variable 'font-lock-defaults)
  (setq font-lock-defaults
	'(rmail-font-lock-keywords
	  t t nil nil
	  (font-lock-maximum-size . nil)
	  (font-lock-fontify-buffer-function . rmail-fontify-buffer-function)
	  (font-lock-unfontify-buffer-function . rmail-unfontify-buffer-function)
	  (font-lock-inhibit-thing-lock . (lazy-lock-mode fast-lock-mode))))
  (make-local-variable 'require-final-newline)
  (setq require-final-newline nil)
  (make-local-variable 'version-control)
  (setq version-control 'never)
  (make-local-variable 'kill-buffer-hook)
  (add-hook 'kill-buffer-hook 'rmail-mode-kill-summary)
  (make-local-variable 'file-precious-flag)
  (setq file-precious-flag t)
  (make-local-variable 'desktop-save-buffer)
  (setq desktop-save-buffer t))

;; Handle M-x revert-buffer done in an rmail-mode buffer.
(defun rmail-revert (arg noconfirm)
  (set-buffer rmail-buffer)
  (let* ((revert-buffer-function (default-value 'revert-buffer-function))
	 (rmail-enable-multibyte enable-multibyte-characters)
	 ;; See similar code in `rmail'.
1436
	 ;; FIXME needs updating?
1437 1438
	 (coding-system-for-read (and rmail-enable-multibyte 'raw-text))
	 (before-revert-hook 'rmail-swap-buffers-maybe))
1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453
    ;; Call our caller again, but this time it does the default thing.
    (when (revert-buffer arg noconfirm)
      ;; If the user said "yes", and we changed something,
      ;; reparse the messages.
      (set-buffer rmail-buffer)
      (rmail-mode-2)
      ;; Convert all or part to Babyl file if possible.
      (rmail-convert-file-maybe)
      ;; We have read the file as raw-text, so the buffer is set to
      ;; unibyte.  Make it multibyte if necessary.
      (if (and rmail-enable-multibyte
	       (not enable-multibyte-characters))
	  (set-buffer-multibyte t))
      (goto-char (point-max))
      (rmail-set-message-counters)
1454
      (rmail-show-message rmail-total-messages)
1455 1456 1457 1458 1459 1460
      (run-hooks 'rmail-mode-hook))))

(defun rmail-expunge-and-save ()
  "Expunge and save RMAIL file."
  (interactive)
  (set-buffer rmail-buffer)
1461
  (rmail-expunge)
1462 1463
  ;; No need to swap buffers: rmail-write-region-annotate takes care of it.
  ;; (rmail-swap-buffers-maybe)
1464 1465
  (save-buffer)
  (if (rmail-summary-exists)
1466
      (rmail-select-summary (set-buffer-modified-p nil))))
1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478

(defun rmail-quit ()
  "Quit out of RMAIL.
Hook `rmail-quit-hook' is run after expunging."
  (interactive)
  (set-buffer rmail-buffer)
  (rmail-expunge t)
  (save-buffer)
  (when (boundp 'rmail-quit-hook)
    (run-hooks 'rmail-quit-hook))
  ;; Don't switch to the summary buffer even if it was recently visible.
  (when rmail-summary-buffer
1479 1480
    (with-current-buffer rmail-summary-buffer
      (set-buffer-modified-p nil))
1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509
    (replace-buffer-in-windows rmail-summary-buffer)
    (bury-buffer rmail-summary-buffer))
  (if rmail-enable-mime
      (let ((obuf rmail-buffer)
	    (ovbuf rmail-view-buffer))
	(set-buffer rmail-view-buffer)
	(quit-window)
	(replace-buffer-in-windows ovbuf)
	(replace-buffer-in-windows obuf)
	(bury-buffer obuf))
    (let ((obuf (current-buffer)))
      (quit-window)
      (replace-buffer-in-windows obuf))))

(defun rmail-bury ()
  "Bury current Rmail buffer and its summary buffer."
  (interactive)
  ;; This let var was called rmail-buffer, but that interfered
  ;; with the buffer-local var used in summary buffers.
  (let ((buffer-to-bury (current-buffer)))
    (if (rmail-summary-exists)
	(let (window)
	  (while (setq window (get-buffer-window rmail-summary-buffer))
	    (quit-window nil window))
	  (bury-buffer rmail-summary-buffer)))
    (quit-window)))

(defun rmail-duplicate-message ()
  "Create a duplicated copy of the current message.
1510
The duplicate copy goes into the Rmail file just after the original."
1511
  ;; If we are in a summary buffer, switch to the Rmail buffer.
1512
  ;; FIXME simpler to swap the contents, not the buffers?
1513
  (set-buffer rmail-buffer)
1514
  (rmail-modify-format)
1515 1516 1517 1518 1519
  (let ((buff (current-buffer))
        (n rmail-current-message)
        (beg (rmail-msgbeg rmail-current-message))
        (end (rmail-msgend rmail-current-message)))
    (if (rmail-buffers-swapped-p) (set-buffer rmail-view-buffer))
1520 1521
      (widen)
      (let ((buffer-read-only nil)
1522 1523 1524 1525 1526 1527 1528 1529
          (string (buffer-substring-no-properties beg end)))
      (goto-char end)
      (insert string))
    (set-buffer buff)
    (rmail-swap-buffers-maybe)
    (goto-char (point-max))
    (rmail-set-message-counters)
    (set-buffer-modified-p t)
1530
    (rmail-show-message-1 n))