rmail.el 166 KB
Newer Older
1 2 3
;;; rmail.el --- main code of "RMAIL" mail reader for Emacs

;; Copyright (C) 1985, 1986, 1987, 1988, 1993, 1994, 1995, 1996, 1997, 1998,
Glenn Morris's avatar
Glenn Morris committed
4
;;   2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
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
;;   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

(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)

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

147 148
(define-obsolete-variable-alias 'rmail-pop-password
  'rmail-remote-password "22.1")
149 150

(defcustom rmail-remote-password nil
151
  "Password to use when reading mail from a remote server.
152 153 154 155 156 157
This setting is ignored for mailboxes whose URL already contains a password."
  :type '(choice (string :tag "Password")
		 (const :tag "Not Required" nil))
  :group 'rmail-retrieve
  :version "22.1")

158 159 160
(define-obsolete-variable-alias 'rmail-pop-password-required
  'rmail-remote-password-required "22.1")

161
(defcustom rmail-remote-password-required nil
162
  "Non-nil if a password is required when reading mail from a remote server."
163 164 165 166 167
  :type 'boolean
  :group 'rmail-retrieve
  :version "22.1")

(defcustom rmail-movemail-flags nil
168
  "List of flags to pass to movemail.
169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184
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
185
  "Non-nil means leave incoming mail in the user's inbox--don't delete it."
186 187 188 189
  :type 'boolean
  :group 'rmail-retrieve)

(defcustom rmail-movemail-search-path nil
190 191 192
  "List of directories to search for movemail (in addition to `exec-path')."
  :group 'rmail-retrieve
  :type '(repeat (directory)))
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

(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)

267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284
;;;###autoload
(defcustom rmail-user-mail-address-regexp nil
  "Regexp matching user mail addresses.
If non-nil, this variable is used to identify the correspondent
when receiving new mail.  If it matches the address of the sender,
the recipient is taken as correspondent of a mail.
If nil \(default value\), your `user-login-name' and `user-mail-address'
are used to exclude yourself as correspondent.

Usually you don't have to set this variable, except if you collect mails
sent by you under different user names.
Then it should be a regexp matching your mail addresses.

Setting this variable has an effect only before reading a mail."
  :type '(choice (const :tag "None" nil) regexp)
  :group 'rmail-retrieve
  :version "21.1")

285
;;;###autoload
286 287
(defcustom rmail-dont-reply-to-names nil
  "A regexp specifying addresses to prune from a reply message.
288 289 290 291 292 293
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."
294 295 296 297
  :type '(choice regexp (const :tag "Your Name" nil))
  :group 'rmail-reply)

;;;###autoload
298
(defvar rmail-default-dont-reply-to-names (purecopy "\\`info-")
299 300 301 302 303 304 305
  "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?
306

307
;;;###autoload
308
(defcustom rmail-ignored-headers
309
  (purecopy
310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325
  (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:"
326
	  "\\|^x-.*:"))
327
  "Regexp to match header fields that Rmail should normally hide.
328 329 330 331 332 333 334 335 336 337 338
\(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:"
339
  "Regexp to match X header fields that Rmail should show.
340 341 342 343 344 345 346 347 348 349 350 351 352
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)

353
;;;###autoload
354
(defcustom rmail-displayed-headers nil
355
  "Regexp to match Header fields that Rmail should display.
356 357 358 359 360
If nil, display all header fields except those matched by
`rmail-ignored-headers'."
  :type '(choice regexp (const :tag "All"))
  :group 'rmail-headers)

361
;;;###autoload
362
(defcustom rmail-retry-ignored-headers (purecopy "^x-authentication-warning:\\|^x-detected-operating-system:\\|^x-spam[-a-z]*:\\|content-type:\\|content-transfer-encoding:\\|mime-version:")
363
  "Headers that should be stripped when retrying a failed message."
364
  :type '(choice regexp (const nil :tag "None"))
365
  :group 'rmail-headers
366
  :version "23.2")	   ; added x-detected-operating-system, x-spam
367

368
;;;###autoload
369
(defcustom rmail-highlighted-headers (purecopy "^From:\\|^Subject:")
370
  "Regexp to match Header fields that Rmail should normally highlight.
371
A value of nil means don't highlight.  Uses the face `rmail-highlight'."
372 373 374 375 376
  :type 'regexp
  :group 'rmail-headers)

(defface rmail-highlight
  '((t (:inherit highlight)))
377 378
  "Face to use for highlighting the most important header fields.
The variable `rmail-highlighted-headers' specifies which headers."
379 380 381
  :group 'rmail-headers
  :version "22.1")

382 383 384 385 386 387 388 389 390 391 392 393 394 395
;; This was removed in Emacs 23.1 with no notification, an unnecessary
;; incompatible change.
(defcustom rmail-highlight-face 'rmail-highlight
  "Face used by Rmail for highlighting headers."
  ;; Note that nil doesn't actually mean use the default face, it
  ;; means use either bold or highlight. It's not worth fixing this
  ;; now that this is obsolete.
  :type '(choice (const :tag "Default" nil)
		 face)
  :group 'rmail-headers)
(make-obsolete-variable 'rmail-highlight-face
			"customize the face `rmail-highlight' instead."
			"23.2")

396 397
(defface rmail-header-name
  '((t (:inherit font-lock-function-name-face)))
398 399 400
  "Face to use for highlighting the header names.
The variable `rmail-font-lock-keywords' specifies which headers
get highlighted."
401 402 403
  :group 'rmail-headers
  :version "23.1")

404 405
(defcustom rmail-delete-after-output nil
  "Non-nil means automatically delete a message that is copied to a file."
406 407 408 409
  :type 'boolean
  :group 'rmail-files)

;;;###autoload
410
(defcustom rmail-primary-inbox-list nil
411 412 413 414 415 416 417
  "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.)
418 419
  :type (list 'choice '(const :tag "Default" nil)
	      (list 'repeat ':value (list (or (getenv "MAIL")
420 421
					      (concat rmail-spool-directory
						      (user-login-name))))
422 423 424 425 426
		    'file))
  :group 'rmail-retrieve
  :group 'rmail-files)

(defcustom rmail-mail-new-frame nil
427
  "Non-nil means Rmail makes a new frame for composing outgoing mail.
428 429 430 431 432 433
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
434
(defcustom rmail-secondary-file-directory (purecopy "~/")
435
  "Directory for additional secondary Rmail files."
436 437 438
  :type 'directory
  :group 'rmail-files)
;;;###autoload
439
(defcustom rmail-secondary-file-regexp (purecopy "\\.xmail$")
440
  "Regexp for which files are secondary Rmail files."
441 442 443 444
  :type 'regexp
  :group 'rmail-files)

(defcustom rmail-confirm-expunge 'y-or-n-p
445 446 447
  "Whether and how to ask for confirmation before expunging deleted messages.
The value, if non-nil is a function to call with a question (string)
as argument, to ask the user that question."
448 449 450 451 452
  :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)
453
(put 'rmail-confirm-expunge 'risky-local-variable t)
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

;;;###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.")

486 487 488 489 490 491 492
;; 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).
493 494 495 496 497 498 499 500 501 502 503 504 505
(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 ] ... )

506 507
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.
508 509 510 511 512 513 514 515 516 517 518 519 520

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
521 522 523
  (\"RMS\" \"from\" \"rms@\") ; save all mail from RMS.

Note that this is only applied in the folder specifed by `rmail-file-name'."
524 525 526 527 528 529 530 531 532 533 534 535 536 537 538
  :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
539
  "If non-nil, Rmail always displays the summary buffer."
540 541 542 543 544 545 546 547 548 549 550 551
  :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)

552 553 554 555 556 557 558 559
(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)

560 561
;; Message counters and markers.  Deleted flags.

562 563
(defvar rmail-current-message nil
  "Integer specifying the message currently being displayed in this folder.")
564 565
(put 'rmail-current-message 'permanent-local t)

566 567 568
(defvar rmail-total-messages nil
  "Integer specifying the total number of messages in this folder.
Includes deleted messages.")
569 570
(put 'rmail-total-messages 'permanent-local t)

571 572 573
(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.")
574 575
(put 'rmail-message-vector 'permanent-local t)

576 577 578 579
(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.")
580 581 582 583 584 585 586 587 588 589 590 591 592 593 594
(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)
595 596 597
(defvar rmail-summary-vector nil
  "In an Rmail buffer, vector of (newline-terminated) strings.
Element N specifies the summary line for message N+1.")
598 599 600 601 602 603
(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'.")
604
(make-variable-buffer-local 'rmail-buffer-swapped)
605
(put 'rmail-buffer-swapped 'permanent-local t)
606 607 608

(defvar rmail-view-buffer nil
  "Buffer which holds RMAIL message for MIME displaying.")
609
(make-variable-buffer-local 'rmail-view-buffer)
610 611 612 613 614 615 616 617 618 619 620 621 622 623
(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"
624
  "Default file name for \\[rmail-output]."
625 626 627
  :type 'file
  :group 'rmail-files)
(defcustom rmail-default-body-file "~/mailout"
628
  "Default file name for \\[rmail-output-body-to-file]."
629 630 631 632 633 634 635 636 637 638 639 640
  :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.")

Kenichi Handa's avatar
Kenichi Handa committed
641
(defcustom rmail-enable-mime t
642
  "If non-nil, RMAIL uses MIME features.
643 644 645 646
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.

647 648
Even if the value is non-nil, you can't use MIME features
unless the feature specified by `rmail-mime-feature' is available."
649 650 651
  :type '(choice (const :tag "on" t)
		 (const :tag "off" nil)
		 (other :tag "when asked" ask))
Kenichi Handa's avatar
Kenichi Handa committed
652
  :version "23.3"
653 654 655 656 657
  :group 'rmail)

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

658
;; FIXME unused.
659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674
(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.
675
This function is called by `rmail-resend' if `rmail-enable-mime' is non-nil.
676 677 678 679
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.")

680 681
;; FIXME one might want to pass a LIMIT, as per
;; rmail-search-mime-header-function.
682 683
(defvar rmail-search-mime-message-function nil
  "Function to check if a regexp matches a MIME message.
684 685 686
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
687 688 689 690
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.
691 692 693 694 695
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.")
696

Kenichi Handa's avatar
Kenichi Handa committed
697
(defvar rmail-mime-feature 'rmailmm
698 699 700 701
  "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'.

Kenichi Handa's avatar
Kenichi Handa committed
702
The default value is `rmailmm'")
703

704
;; FIXME this is unused.
705 706 707 708 709
(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.

710
If the variable `rmail-enable-mime' is non-nil, this variable is
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
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"))
772 773
  "Regexp matching the delimiter of messages in UNIX mail format
\(UNIX From lines), minus the initial ^.  Note that if you change
774
this expression, you must change the code in `rmail-nuke-pinhead-header'
775
that knows the exact ordering of the \\( \\) subexpressions.")
776

777 778 779
;; 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.
780 781 782 783 784 785 786 787
(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)
788 789
	    '("^\\(Mail-\\)?Reply-To:.*$" . 'rmail-header-name)
	    ;; FIXME Mail-Followup-To should probably be here too.
790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806
	    '("^Subject:" . 'rmail-header-name)
	    '("^X-Spam-Status:" . 'rmail-header-name)
	    '("^\\(To\\|Apparently-To\\|Cc\\|Newsgroups\\):"
	      . 'rmail-header-name)
	    ;; Use MATCH-ANCHORED to effectively anchor the regexp left side.
	    `(,cite-chars
	      (,(concat "\\=[ \t]*"
			"\\(\\(\\([" cite-prefix "]+[" cite-suffix "]*\\)?"
			"\\(" cite-chars "[ \t]*\\)\\)+\\)"
			"\\(.*\\)")
	       (beginning-of-line) (end-of-line)
	       (1 font-lock-comment-delimiter-face nil t)
	       (5 font-lock-comment-face nil t)))
	    '("^\\(X-[a-z0-9-]+\\|In-reply-to\\|Date\\):.*\\(\n[ \t]+.*\\)*$"
	      . 'rmail-header-name))))
  "Additional expressions to highlight in Rmail mode.")

807 808 809 810 811 812
;; Rmail does not expect horizontal splitting.  (Bug#2282)
(defun rmail-pop-to-buffer (&rest args)
  "Like `pop-to-buffer', but with `split-width-threshold' set to nil."
  (let (split-width-threshold)
    (apply 'pop-to-buffer args)))

813 814 815 816 817 818 819 820 821
;; 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
822
		   (rmail-pop-to-buffer rmail-summary-buffer)
823 824 825 826 827 828 829
		   ;; 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))))
830
       (with-current-buffer rmail-summary-buffer
831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859
	 (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.
860 861
Moves messages into file named by `rmail-file-name' and edits that
file in RMAIL Mode.
862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886
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))
887
	    (rmail-swap-buffers-maybe)
888 889 890
	    (rmail-set-message-counters)))
      ;; The mail file is either unchanged or not visited.  Visit it.
      (switch-to-buffer
891 892 893 894 895 896
       (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)))
897
	 (find-file-noselect file-name))))
898 899
    ;; Ensure that the collection and view buffers are in sync and
    ;; ensure that a message is not being edited.
900 901 902 903 904 905
    (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))
906
    ;; Ensure that the Rmail file is in mbox format, the buffer is in
907 908 909 910 911 912 913 914 915 916 917 918
    ;; 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
919
	  (setq msg-shown (rmail-get-new-mail)))
920 921
      (progn
	(set-buffer mail-buf)
922 923
	(or msg-shown
	    (rmail-show-message (rmail-first-unseen-message)))
924 925 926 927 928 929 930 931 932 933
	(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.
934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949
  (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")))))
950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968

(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...")
969
	  (let ((inhibit-read-only t)
970 971
		(coding-system-for-read 'raw-text)
		(buffer-undo-list t))
972
	    (erase-buffer)
973
	    (insert-file-contents new-file)
974 975 976
	    ;; 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)
977 978 979
	    (rmail-mode-1)
	    (rmail-perm-variables)
	    (rmail-variables)
980
	    (setq rmail-was-converted t)
981
	    (rmail-dont-modify-format)
982 983 984 985 986 987 988 989 990
	    (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."
991 992
  (save-excursion
    (goto-char (point-min))
993
    (if (re-search-forward rmail-mime-charset-pattern nil t)
994
	(coding-system-from-name (match-string 1))
995 996 997 998
      'undecided)))

;;; Set up Rmail mode keymaps

999 1000 1001 1002 1003 1004 1005 1006 1007
(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)
1008
    ;; If you change this, change the rmail-resend menu-item's :keys.
1009 1010 1011 1012
    (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)
1013
    (define-key map "j"      'rmail-show-message)
1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038
    (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)
1039
    (define-key map "v"      'rmail-mime)
1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059
    (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)

1060

1061 1062 1063 1064
    (define-key map [menu-bar] (make-sparse-keymap))

    (define-key map [menu-bar classify]
      (cons "Classify" (make-sparse-keymap "Classify")))
1065

1066 1067
    (define-key map [menu-bar classify input-menu]
      nil)
1068

1069 1070
    (define-key map [menu-bar classify output-menu]
      nil)
1071

1072 1073
    (define-key map [menu-bar classify output-body]
      '("Output body to file..." . rmail-output-body-to-file))
1074

1075 1076
    (define-key map [menu-bar classify output-inbox]
      '("Output..." . rmail-output))
1077

1078 1079
    (define-key map [menu-bar classify output]
      '("Output as seen..." . rmail-output-as-seen))
1080

1081 1082
    (define-key map [menu-bar classify kill-label]
      '("Kill Label..." . rmail-kill-label))
1083

1084 1085
    (define-key map [menu-bar classify add-label]
      '("Add Label..." . rmail-add-label))
1086

1087 1088
    (define-key map [menu-bar summary]
      (cons "Summary" (make-sparse-keymap "Summary")))
1089

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

1093 1094
    (define-key map [menu-bar summary labels]
      '("By Labels..." . rmail-summary-by-labels))
1095

1096 1097
    (define-key map [menu-bar summary recipients]
      '("By Recipients..." . rmail-summary-by-recipients))
1098

1099 1100
    (define-key map [menu-bar summary topic]
      '("By Topic..." . rmail-summary-by-topic))
1101

1102 1103
    (define-key map [menu-bar summary regexp]
      '("By Regexp..." . rmail-summary-by-regexp))
1104

1105 1106
    (define-key map [menu-bar summary all]
      '("All" . rmail-summary))
1107

1108 1109
    (define-key map [menu-bar mail]
      (cons "Mail" (make-sparse-keymap "Mail")))
1110

1111 1112
    (define-key map [menu-bar mail rmail-get-new-mail]
      '("Get New Mail" . rmail-get-new-mail))
1113

1114 1115
    (define-key map [menu-bar mail lambda]
      '("----"))
1116

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

1120
    (define-key map [menu-bar mail resend]
1121
    '(menu-item "Resend..." rmail-resend :keys "C-u f"))
1122

1123 1124
    (define-key map [menu-bar mail forward]
      '("Forward" . rmail-forward))
1125

1126 1127
    (define-key map [menu-bar mail retry]
      '("Retry" . rmail-retry-failure))
1128

1129 1130
    (define-key map [menu-bar mail reply]
      '("Reply" . rmail-reply))
1131

1132 1133
    (define-key map [menu-bar mail mail]
      '("Mail" . rmail-mail))
1134

1135 1136
    (define-key map [menu-bar delete]
      (cons "Delete" (make-sparse-keymap "Delete")))
1137

1138 1139
    (define-key map [menu-bar delete expunge/save]
      '("Expunge/Save" . rmail-expunge-and-save))
1140

1141 1142
    (define-key map [menu-bar delete expunge]
      '("Expunge" . rmail-expunge))
1143

1144 1145
    (define-key map [menu-bar delete undelete]
      '("Undelete" . rmail-undelete-previous-message))
1146

1147 1148
    (define-key map [menu-bar delete delete]
      '("Delete" . rmail-delete-forward))
1149

1150 1151
    (define-key map [menu-bar move]
      (cons "Move" (make-sparse-keymap "Move")))
1152

1153 1154
    (define-key map [menu-bar move search-back]
      '("Search Back..." . rmail-search-backwards))
1155

1156 1157
    (define-key map [menu-bar move search]
      '("Search..." . rmail-search))
1158

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

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

1165 1166
    (define-key map [menu-bar move last]
      '("Last" . rmail-last-message))
1167

1168 1169
    (define-key map [menu-bar move first]
      '("First" . rmail-first-message))
1170

1171 1172
    (define-key map [menu-bar move previous]
      '("Previous" . rmail-previous-message))
1173

1174 1175
    (define-key map [menu-bar move next]
      '("Next" . rmail-next-message))
1176

1177 1178
   map)
  "Keymap used in Rmail mode.")
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 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216

;; 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)))

1217 1218
(defvar rmail-enable-multibyte)         ; dynamically bound

1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234
;;;###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.
1235
\\[rmail-show-message]	Jump to message specified by numeric position in file.
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 1269 1270 1271 1272 1273
\\[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)
1274
	       (default-value 'enable-multibyte-characters))
1275 1276 1277 1278 1279 1280
      (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)
1281
    (rmail-show-message rmail-total-messages)
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 1307 1308 1309 1310 1311 1312 1313 1314 1315
    (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."
1316 1317 1318 1319 1320 1321 1322 1323 1324
  ;; We want to reuse any existing view buffer, so as not to create an
  ;; endless number of them.  But we must avoid clashes if we visit
  ;; two different rmail files with the same basename (Bug#4593).