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db7fa2546f
emacs/lisp/mh-e/mh-show.el
Stephen Gildea db7fa2546f Update documentation for mh-show-mode-hook 
* lisp/mh-e/mh-e.el, doc/misc/mh-e.texi (mh-show-mode-hook): Now that
the fix for MH-E bug #470 calls mh-show-mode-hook earlier, update the
documentation to no longer say that the message contents are available.
2020-02-01 09:18:46 -08:00

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;;; mh-show.el --- MH-Show mode
;; Copyright (C) 1993, 1995, 1997, 2000-2020 Free Software Foundation,
;; Inc.
;; Author: Bill Wohler <wohler@newt.com>
;; Keywords: mail
;; See: mh-e.el
;; This file is part of GNU Emacs.
;; GNU Emacs is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
;;; Commentary:
;; Mode for showing messages.
;;; Change Log:
;;; Code:
(require 'mh-e)
(require 'mh-scan)
;; Dynamically-created function not found in mh-loaddefs.el.
(autoload 'mh-tool-bar-init "mh-tool-bar")
(require 'font-lock)
(require 'gnus-cite)
(require 'gnus-util)
(require 'goto-addr)
(autoload 'mh-make-buffer-data "mh-mime") ;can't be automatically generated
;;; MH-Folder Commands
(defvar mh-showing-with-headers nil
"If non-nil, MH-Show buffer contains message with all header fields.
If nil, MH-Show buffer contains message processed normally.")
;;;###mh-autoload
(defun mh-show (&optional message redisplay-flag)
"Display message\\<mh-folder-mode-map>.
If the message under the cursor is already displayed, this command
scrolls to the beginning of the message. MH-E normally hides a lot of
the superfluous header fields that mailers add to a message, but if
you wish to see all of them, use the command \\[mh-header-display].
Two hooks can be used to control how messages are displayed. The
first hook, `mh-show-mode-hook', is called early on in the
process of the message display. It is usually used to perform
some action on the message's buffer. The second hook,
`mh-show-hook', is the last thing called after messages are
displayed. It's used to affect the behavior of MH-E in general or
when `mh-show-mode-hook' is too early.
From a program, optional argument MESSAGE can be used to display an
alternative message. The optional argument REDISPLAY-FLAG forces the
redisplay of the message even if the show buffer was already
displaying the correct message.
See the \"mh-show\" customization group for a litany of options that
control what displayed messages look like."
(interactive (list nil t))
(when (or redisplay-flag
(and mh-showing-with-headers
(or mh-mhl-format-file mh-clean-message-header-flag)))
(mh-invalidate-show-buffer))
(mh-show-msg message))
;;;###mh-autoload
(defun mh-header-display ()
"Display message with all header fields\\<mh-folder-mode-map>.
Use the command \\[mh-show] to show the message normally again."
(interactive)
(and (not mh-showing-with-headers)
(or mh-mhl-format-file mh-clean-message-header-flag)
(mh-invalidate-show-buffer))
(let ((mh-decode-mime-flag nil)
(mh-mhl-format-file nil)
(mh-clean-message-header-flag nil))
(mh-show-msg nil)
(mh-in-show-buffer (mh-show-buffer)
(goto-char (point-min))
(mh-recenter 0))
(setq mh-showing-with-headers t)))
;;;###mh-autoload
(defun mh-show-preferred-alternative ()
"Display message with the default preferred alternative.
This is as if `mm-discouraged-alternatives' is set to nil.
Use the command \\[mh-show] to show the message normally again."
(interactive)
(let
((mm-discouraged-alternatives))
(mh-show nil t)))
;;; Support Routines for MH-Folder Commands
;;;###mh-autoload
(defun mh-maybe-show (&optional msg)
"Display message at cursor, but only if in show mode.
If optional arg MSG is non-nil, display that message instead."
(if mh-showing-mode (mh-show msg)))
(defun mh-show-msg (msg)
"Show MSG.
The hook `mh-show-hook' is called after the message has been
displayed."
(if (not msg)
(setq msg (mh-get-msg-num t)))
(mh-showing-mode t)
(setq mh-page-to-next-msg-flag nil)
(let ((folder mh-current-folder)
(folders (list mh-current-folder))
(clean-message-header mh-clean-message-header-flag)
(show-window (get-buffer-window mh-show-buffer))
(display-mime-buttons-flag mh-display-buttons-for-inline-parts-flag))
(if (not (eq (next-window (minibuffer-window)) (selected-window)))
(delete-other-windows)) ; force ourself to the top window
(mh-in-show-buffer (mh-show-buffer)
(setq mh-display-buttons-for-inline-parts-flag display-mime-buttons-flag)
(if (and show-window
(equal (mh-msg-filename msg folder) buffer-file-name))
(progn ;just back up to start
(goto-char (point-min))
(if (not clean-message-header)
(mh-start-of-uncleaned-message)))
(mh-display-msg msg folder)))
(unless (mh-window-full-height-p) ; not vertically split
(shrink-window (- (window-height) (or mh-summary-height
(mh-summary-height)))))
(mh-recenter nil)
;; The following line is a nop which forces update of the scan line so
;; that font-lock will update it (if needed)...
(mh-notate nil nil mh-cmd-note)
(if (not (memq msg mh-seen-list))
(setq mh-seen-list (cons msg mh-seen-list)))
(when mh-update-sequences-after-mh-show-flag
(mh-update-sequences)
(when mh-index-data
(setq folders
(append (mh-index-delete-from-sequence mh-unseen-seq (list msg))
folders)))
(when (mh-speed-flists-active-p)
(apply #'mh-speed-flists t folders)))
(run-hooks 'mh-show-hook)))
;;;###mh-autoload
(defun mh-start-of-uncleaned-message ()
"Position uninteresting headers off the top of the window."
(let ((case-fold-search t))
(re-search-forward
"^To:\\|^Cc:\\|^From:\\|^Subject:\\|^Date:" nil t)
(beginning-of-line)
(mh-recenter 0)))
(defvar mh-show-buffer-mode-line-buffer-id " {show-%s} %d"
"Format string to produce `mode-line-buffer-identification' for show buffers.
First argument is folder name. Second is message number.")
;;;###mh-autoload
(defun mh-display-msg (msg-num folder-name)
"Display MSG-NUM of FOLDER-NAME.
Sets the current buffer to the show buffer."
(let ((folder (mh-msg-folder folder-name)))
(set-buffer folder)
;; When Gnus uses external displayers it has to keep handles longer. So
;; we will delete these handles when mh-quit is called on the folder. It
;; would be nicer if there are weak pointers in emacs lisp, then we could
;; get the garbage collector to do this for us.
(unless (mh-buffer-data)
(setf (mh-buffer-data) (mh-make-buffer-data)))
;; Bind variables in folder buffer in case they are local
(let ((formfile mh-mhl-format-file)
(clean-message-header mh-clean-message-header-flag)
(invisible-headers mh-invisible-header-fields-compiled)
(visible-headers nil)
(msg-filename (mh-msg-filename msg-num folder-name))
(show-buffer mh-show-buffer)
(mm-inline-media-tests mh-mm-inline-media-tests))
(if (not (file-exists-p msg-filename))
(error "Message %d does not exist" msg-num))
(if (and (> mh-show-maximum-size 0)
(> (elt (file-attributes msg-filename) 7)
mh-show-maximum-size)
(not (y-or-n-p
(format
"Message %d (%d bytes) exceeds %d bytes. Display it? "
msg-num (elt (file-attributes msg-filename) 7)
mh-show-maximum-size))))
(error "Message %d not displayed" msg-num))
(set-buffer show-buffer)
(cond ((not (equal msg-filename buffer-file-name))
(mh-unvisit-file)
(setq buffer-read-only nil)
;; Cleanup old mime handles
(mh-mime-cleanup)
(erase-buffer)
;; Changing contents, so this hook needs to be reinitialized.
;; pgp.el uses this.
(if (boundp 'write-contents-hooks) ;Emacs 19
(kill-local-variable 'write-contents-hooks))
(font-lock-mode -1)
(mh-show-mode)
(if formfile
(mh-exec-lib-cmd-output "mhl" "-nobell" "-noclear"
(if (stringp formfile)
(list "-form" formfile))
msg-filename)
(insert-file-contents-literally msg-filename))
;; Use mm to display buffer
(when (and mh-decode-mime-flag (not formfile))
(mh-add-missing-mime-version-header)
(setf (mh-buffer-data) (mh-make-buffer-data))
(mh-mime-display))
;; Header cleanup
(goto-char (point-min))
(cond (clean-message-header
(mh-clean-msg-header (point-min)
invisible-headers
visible-headers)
(goto-char (point-min)))
(t
(mh-start-of-uncleaned-message)))
(mh-decode-message-header)
;; the parts of visiting we want to do (no locking)
(or (eq buffer-undo-list t) ;don't save undo info for prev msgs
(setq buffer-undo-list nil))
(set-buffer-auto-saved)
;; the parts of set-visited-file-name we want to do (no locking)
(setq buffer-file-name msg-filename)
(setq buffer-backed-up nil)
(auto-save-mode 1)
(set-mark nil)
(when (and mh-decode-mime-flag (not formfile))
(mh-display-smileys)
(mh-display-emphasis))
(set-buffer-modified-p nil)
(setq buffer-read-only t)
(setq mh-show-folder-buffer folder)
(setq mode-line-buffer-identification
(list (format mh-show-buffer-mode-line-buffer-id
folder-name msg-num)))
(mh-logo-display)
(set-buffer folder)
(setq mh-showing-with-headers nil))))))
(defun mh-msg-folder (folder-name)
"Return the name of the buffer for FOLDER-NAME."
folder-name)
;;;###mh-autoload
(defun mh-clean-msg-header (start invisible-headers visible-headers)
"Flush extraneous lines in message header.
Header is cleaned from START to the end of the message header.
INVISIBLE-HEADERS contains a regular expression specifying lines
to delete from the header. VISIBLE-HEADERS contains a regular
expression specifying the lines to display. INVISIBLE-HEADERS is
ignored if VISIBLE-HEADERS is non-nil."
;; XXX Note that MH-E no longer supports the `mh-visible-headers'
;; variable, so this function could be trimmed of this feature too."
(let ((case-fold-search t)
(buffer-read-only nil))
(save-restriction
(goto-char start)
(if (search-forward "\n\n" nil 'move)
(backward-char 1))
(narrow-to-region start (point))
(goto-char (point-min))
(if visible-headers
(while (< (point) (point-max))
(cond ((looking-at visible-headers)
(forward-line 1)
(while (looking-at "[ \t]") (forward-line 1)))
(t
(mh-delete-line 1)
(while (looking-at "[ \t]")
(mh-delete-line 1)))))
(while (re-search-forward invisible-headers nil t)
(beginning-of-line)
(mh-delete-line 1)
(while (looking-at "[ \t]")
(mh-delete-line 1)))))
(let ((mh-compose-skipped-header-fields ()))
(mh-letter-hide-all-skipped-fields))
(unlock-buffer)))
;;;###mh-autoload
(defun mh-invalidate-show-buffer ()
"Invalidate the show buffer so we must update it to use it."
(if (get-buffer mh-show-buffer)
(with-current-buffer mh-show-buffer
(mh-unvisit-file))))
(defun mh-unvisit-file ()
"Separate current buffer from the message file it was visiting."
(or (not (buffer-modified-p))
(null buffer-file-name) ;we've been here before
(yes-or-no-p (format "Message %s modified; discard changes? "
(file-name-nondirectory buffer-file-name)))
(error "Changes preserved"))
(clear-visited-file-modtime)
(unlock-buffer)
(setq buffer-file-name nil))
(defun mh-summary-height ()
"Return ideal value for the variable `mh-summary-height'.
The current frame height is taken into consideration."
(or (and (fboundp 'frame-height)
(> (frame-height) 24)
(min 10 (/ (frame-height) 6)))
4))
;; Infrastructure to generate show-buffer functions from folder functions
;; XEmacs does not have deactivate-mark? What is the equivalent of
;; transient-mark-mode for XEmacs? Should we be restoring the mark in the
;; folder buffer after the operation has been carried out.
(defmacro mh-defun-show-buffer (function original-function
&optional dont-return)
"Define FUNCTION to run ORIGINAL-FUNCTION in folder buffer.
If the buffer we start in is still visible and DONT-RETURN is nil
then switch to it after that."
`(defun ,function ()
,(format "Calls %s from the message's folder.\n%s\nSee `%s' for more info.\n"
original-function
(if dont-return ""
"When function completes, returns to the show buffer if it is
still visible.\n")
original-function)
(interactive)
(when (buffer-live-p (get-buffer mh-show-folder-buffer))
(let ((config (current-window-configuration))
(folder-buffer mh-show-folder-buffer)
(normal-exit nil)
,@(if dont-return () '((cur-buffer-name (buffer-name)))))
(pop-to-buffer mh-show-folder-buffer nil)
(unless (equal (buffer-name
(window-buffer (frame-first-window (selected-frame))))
folder-buffer)
(delete-other-windows))
(mh-goto-cur-msg t)
(mh-funcall-if-exists deactivate-mark)
(unwind-protect
(prog1 (call-interactively (function ,original-function))
(setq normal-exit t))
(mh-funcall-if-exists deactivate-mark)
(when (eq major-mode 'mh-folder-mode)
(mh-funcall-if-exists hl-line-highlight))
(cond ((not normal-exit)
(set-window-configuration config))
,(if dont-return
'(t (setq mh-previous-window-config config))
'((and (get-buffer cur-buffer-name)
(window-live-p (get-buffer-window
(get-buffer cur-buffer-name))))
(pop-to-buffer (get-buffer cur-buffer-name) nil)))))))))
;; Generate interactive functions for the show buffer from the corresponding
;; folder functions.
(mh-defun-show-buffer mh-show-previous-undeleted-msg
mh-previous-undeleted-msg)
(mh-defun-show-buffer mh-show-next-undeleted-msg
mh-next-undeleted-msg)
(mh-defun-show-buffer mh-show-quit mh-quit)
(mh-defun-show-buffer mh-show-delete-msg mh-delete-msg)
(mh-defun-show-buffer mh-show-refile-msg mh-refile-msg)
(mh-defun-show-buffer mh-show-undo mh-undo)
(mh-defun-show-buffer mh-show-execute-commands mh-execute-commands)
(mh-defun-show-buffer mh-show-reply mh-reply t)
(mh-defun-show-buffer mh-show-redistribute mh-redistribute)
(mh-defun-show-buffer mh-show-forward mh-forward t)
(mh-defun-show-buffer mh-show-header-display mh-header-display)
(mh-defun-show-buffer mh-show-refile-or-write-again
mh-refile-or-write-again)
(mh-defun-show-buffer mh-show-show mh-show)
(mh-defun-show-buffer mh-show-show-preferred-alternative mh-show-preferred-alternative)
(mh-defun-show-buffer mh-show-write-message-to-file
mh-write-msg-to-file)
(mh-defun-show-buffer mh-show-extract-rejected-mail
mh-extract-rejected-mail t)
(mh-defun-show-buffer mh-show-delete-msg-no-motion
mh-delete-msg-no-motion)
(mh-defun-show-buffer mh-show-first-msg mh-first-msg)
(mh-defun-show-buffer mh-show-last-msg mh-last-msg)
(mh-defun-show-buffer mh-show-copy-msg mh-copy-msg)
(mh-defun-show-buffer mh-show-edit-again mh-edit-again t)
(mh-defun-show-buffer mh-show-goto-msg mh-goto-msg)
(mh-defun-show-buffer mh-show-inc-folder mh-inc-folder)
(mh-defun-show-buffer mh-show-delete-subject-or-thread
mh-delete-subject-or-thread)
(mh-defun-show-buffer mh-show-delete-subject mh-delete-subject)
(mh-defun-show-buffer mh-show-print-msg mh-print-msg)
(mh-defun-show-buffer mh-show-send mh-send t)
(mh-defun-show-buffer mh-show-toggle-showing mh-toggle-showing t)
(mh-defun-show-buffer mh-show-pipe-msg mh-pipe-msg t)
(mh-defun-show-buffer mh-show-sort-folder mh-sort-folder)
(mh-defun-show-buffer mh-show-visit-folder mh-visit-folder t)
(mh-defun-show-buffer mh-show-rescan-folder mh-rescan-folder)
(mh-defun-show-buffer mh-show-pack-folder mh-pack-folder)
(mh-defun-show-buffer mh-show-kill-folder mh-kill-folder t)
(mh-defun-show-buffer mh-show-list-folders mh-list-folders t)
(mh-defun-show-buffer mh-show-undo-folder mh-undo-folder)
(mh-defun-show-buffer mh-show-delete-msg-from-seq
mh-delete-msg-from-seq)
(mh-defun-show-buffer mh-show-delete-seq mh-delete-seq)
(mh-defun-show-buffer mh-show-list-sequences mh-list-sequences)
(mh-defun-show-buffer mh-show-narrow-to-seq mh-narrow-to-seq)
(mh-defun-show-buffer mh-show-put-msg-in-seq mh-put-msg-in-seq)
(mh-defun-show-buffer mh-show-msg-is-in-seq mh-msg-is-in-seq)
(mh-defun-show-buffer mh-show-widen mh-widen)
(mh-defun-show-buffer mh-show-narrow-to-subject mh-narrow-to-subject)
(mh-defun-show-buffer mh-show-narrow-to-from mh-narrow-to-from)
(mh-defun-show-buffer mh-show-narrow-to-cc mh-narrow-to-cc)
(mh-defun-show-buffer mh-show-narrow-to-range mh-narrow-to-range)
(mh-defun-show-buffer mh-show-narrow-to-to mh-narrow-to-to)
(mh-defun-show-buffer mh-show-store-msg mh-store-msg)
(mh-defun-show-buffer mh-show-page-digest mh-page-digest)
(mh-defun-show-buffer mh-show-page-digest-backwards
mh-page-digest-backwards)
(mh-defun-show-buffer mh-show-burst-digest mh-burst-digest)
(mh-defun-show-buffer mh-show-page-msg mh-page-msg)
(mh-defun-show-buffer mh-show-previous-page mh-previous-page)
(mh-defun-show-buffer mh-show-modify mh-modify t)
(mh-defun-show-buffer mh-show-next-button mh-next-button)
(mh-defun-show-buffer mh-show-prev-button mh-prev-button)
(mh-defun-show-buffer mh-show-toggle-mime-part mh-folder-toggle-mime-part)
(mh-defun-show-buffer mh-show-save-mime-part mh-folder-save-mime-part)
(mh-defun-show-buffer mh-show-inline-mime-part mh-folder-inline-mime-part)
(mh-defun-show-buffer mh-show-toggle-threads mh-toggle-threads)
(mh-defun-show-buffer mh-show-thread-delete mh-thread-delete)
(mh-defun-show-buffer mh-show-thread-refile mh-thread-refile)
(mh-defun-show-buffer mh-show-update-sequences mh-update-sequences)
(mh-defun-show-buffer mh-show-next-unread-msg mh-next-unread-msg)
(mh-defun-show-buffer mh-show-previous-unread-msg mh-previous-unread-msg)
(mh-defun-show-buffer mh-show-thread-ancestor mh-thread-ancestor)
(mh-defun-show-buffer mh-show-thread-next-sibling mh-thread-next-sibling)
(mh-defun-show-buffer mh-show-thread-previous-sibling
mh-thread-previous-sibling)
(mh-defun-show-buffer mh-show-index-visit-folder mh-index-visit-folder t)
(mh-defun-show-buffer mh-show-toggle-tick mh-toggle-tick)
(mh-defun-show-buffer mh-show-narrow-to-tick mh-narrow-to-tick)
(mh-defun-show-buffer mh-show-junk-blacklist mh-junk-blacklist)
(mh-defun-show-buffer mh-show-junk-whitelist mh-junk-whitelist)
(mh-defun-show-buffer mh-show-index-new-messages mh-index-new-messages)
(mh-defun-show-buffer mh-show-index-ticked-messages mh-index-ticked-messages)
(mh-defun-show-buffer mh-show-index-sequenced-messages
mh-index-sequenced-messages)
(mh-defun-show-buffer mh-show-catchup mh-catchup)
(mh-defun-show-buffer mh-show-ps-print-toggle-color mh-ps-print-toggle-color)
(mh-defun-show-buffer mh-show-ps-print-toggle-faces mh-ps-print-toggle-faces)
(mh-defun-show-buffer mh-show-ps-print-msg-file mh-ps-print-msg-file)
(mh-defun-show-buffer mh-show-ps-print-msg mh-ps-print-msg)
(mh-defun-show-buffer mh-show-toggle-mime-buttons mh-toggle-mime-buttons)
(mh-defun-show-buffer mh-show-display-with-external-viewer
mh-display-with-external-viewer)
;;; Sequence Menu
(easy-menu-define
mh-show-sequence-menu mh-show-mode-map "Menu for MH-E folder-sequence."
'("Sequence"
["Add Message to Sequence..." mh-show-put-msg-in-seq t]
["List Sequences for Message" mh-show-msg-is-in-seq t]
["Delete Message from Sequence..." mh-show-delete-msg-from-seq t]
["List Sequences in Folder..." mh-show-list-sequences t]
["Delete Sequence..." mh-show-delete-seq t]
["Narrow to Sequence..." mh-show-narrow-to-seq t]
["Widen from Sequence" mh-show-widen t]
"--"
["Narrow to Subject Sequence" mh-show-narrow-to-subject t]
["Narrow to Tick Sequence" mh-show-narrow-to-tick
(with-current-buffer mh-show-folder-buffer
(and mh-tick-seq (mh-seq-msgs (mh-find-seq mh-tick-seq))))]
["Delete Rest of Same Subject" mh-show-delete-subject t]
["Toggle Tick Mark" mh-show-toggle-tick t]
"--"
["Push State Out to MH" mh-show-update-sequences t]))
;;; Message Menu
(easy-menu-define
mh-show-message-menu mh-show-mode-map "Menu for MH-E folder-message."
'("Message"
["Show Message" mh-show-show t]
["Show Message with Header" mh-show-header-display t]
["Show Message with Preferred Alternative"
mh-show-show-preferred-alternative t]
["Next Message" mh-show-next-undeleted-msg t]
["Previous Message" mh-show-previous-undeleted-msg t]
["Go to First Message" mh-show-first-msg t]
["Go to Last Message" mh-show-last-msg t]
["Go to Message by Number..." mh-show-goto-msg t]
["Modify Message" mh-show-modify t]
["Delete Message" mh-show-delete-msg t]
["Refile Message" mh-show-refile-msg t]
["Undo Delete/Refile" mh-show-undo t]
["Process Delete/Refile" mh-show-execute-commands t]
"--"
["Compose a New Message" mh-send t]
["Reply to Message..." mh-show-reply t]
["Forward Message..." mh-show-forward t]
["Redistribute Message..." mh-show-redistribute t]
["Edit Message Again" mh-show-edit-again t]
["Re-edit a Bounced Message" mh-show-extract-rejected-mail t]
"--"
["Copy Message to Folder..." mh-show-copy-msg t]
["Print Message" mh-show-print-msg t]
["Write Message to File..." mh-show-write-msg-to-file t]
["Pipe Message to Command..." mh-show-pipe-msg t]
["Unpack Uuencoded Message..." mh-show-store-msg t]
["Burst Digest Message" mh-show-burst-digest t]))
;;; Folder Menu
(easy-menu-define
mh-show-folder-menu mh-show-mode-map "Menu for MH-E folder."
'("Folder"
["Incorporate New Mail" mh-show-inc-folder t]
["Toggle Show/Folder" mh-show-toggle-showing t]
["Execute Delete/Refile" mh-show-execute-commands t]
["Rescan Folder" mh-show-rescan-folder t]
["Thread Folder" mh-show-toggle-threads t]
["Pack Folder" mh-show-pack-folder t]
["Sort Folder" mh-show-sort-folder t]
"--"
["List Folders" mh-show-list-folders t]
["Visit a Folder..." mh-show-visit-folder t]
["View New Messages" mh-show-index-new-messages t]
["Search..." mh-search t]
"--"
["Quit MH-E" mh-quit t]))
;;; MH-Show Keys
(gnus-define-keys mh-show-mode-map
" " mh-show-page-msg
"!" mh-show-refile-or-write-again
"'" mh-show-toggle-tick
"," mh-show-header-display
"." mh-show-show
":" mh-show-show-preferred-alternative
">" mh-show-write-message-to-file
"?" mh-help
"E" mh-show-extract-rejected-mail
"M" mh-show-modify
"\177" mh-show-previous-page
"\C-d" mh-show-delete-msg-no-motion
"\t" mh-show-next-button
[backtab] mh-show-prev-button
"\M-\t" mh-show-prev-button
"\ed" mh-show-redistribute
"^" mh-show-refile-msg
"c" mh-show-copy-msg
"d" mh-show-delete-msg
"e" mh-show-edit-again
"f" mh-show-forward
"g" mh-show-goto-msg
"i" mh-show-inc-folder
"k" mh-show-delete-subject-or-thread
"m" mh-show-send
"n" mh-show-next-undeleted-msg
"\M-n" mh-show-next-unread-msg
"o" mh-show-refile-msg
"p" mh-show-previous-undeleted-msg
"\M-p" mh-show-previous-unread-msg
"q" mh-show-quit
"r" mh-show-reply
"s" mh-show-send
"t" mh-show-toggle-showing
"u" mh-show-undo
"x" mh-show-execute-commands
"v" mh-show-index-visit-folder
"|" mh-show-pipe-msg)
(gnus-define-keys (mh-show-folder-map "F" mh-show-mode-map)
"?" mh-prefix-help
"'" mh-index-ticked-messages
"S" mh-show-sort-folder
"c" mh-show-catchup
"f" mh-show-visit-folder
"k" mh-show-kill-folder
"l" mh-show-list-folders
"n" mh-index-new-messages
"o" mh-show-visit-folder
"p" mh-show-pack-folder
"q" mh-show-index-sequenced-messages
"r" mh-show-rescan-folder
"s" mh-search
"t" mh-show-toggle-threads
"u" mh-show-undo-folder
"v" mh-show-visit-folder)
(gnus-define-keys (mh-show-sequence-map "S" mh-show-mode-map)
"'" mh-show-narrow-to-tick
"?" mh-prefix-help
"d" mh-show-delete-msg-from-seq
"k" mh-show-delete-seq
"l" mh-show-list-sequences
"n" mh-show-narrow-to-seq
"p" mh-show-put-msg-in-seq
"s" mh-show-msg-is-in-seq
"w" mh-show-widen)
(define-key mh-show-mode-map "I" mh-inc-spool-map)
(gnus-define-keys (mh-show-junk-map "J" mh-show-mode-map)
"?" mh-prefix-help
"b" mh-show-junk-blacklist
"w" mh-show-junk-whitelist)
(gnus-define-keys (mh-show-ps-print-map "P" mh-show-mode-map)
"?" mh-prefix-help
"C" mh-show-ps-print-toggle-color
"F" mh-show-ps-print-toggle-faces
"f" mh-show-ps-print-msg-file
"l" mh-show-print-msg
"p" mh-show-ps-print-msg)
(gnus-define-keys (mh-show-thread-map "T" mh-show-mode-map)
"?" mh-prefix-help
"u" mh-show-thread-ancestor
"p" mh-show-thread-previous-sibling
"n" mh-show-thread-next-sibling
"t" mh-show-toggle-threads
"d" mh-show-thread-delete
"o" mh-show-thread-refile)
(gnus-define-keys (mh-show-limit-map "/" mh-show-mode-map)
"'" mh-show-narrow-to-tick
"?" mh-prefix-help
"c" mh-show-narrow-to-cc
"g" mh-show-narrow-to-range
"m" mh-show-narrow-to-from
"s" mh-show-narrow-to-subject
"t" mh-show-narrow-to-to
"w" mh-show-widen)
(gnus-define-keys (mh-show-extract-map "X" mh-show-mode-map)
"?" mh-prefix-help
"s" mh-show-store-msg
"u" mh-show-store-msg)
(gnus-define-keys (mh-show-digest-map "D" mh-show-mode-map)
"?" mh-prefix-help
" " mh-show-page-digest
"\177" mh-show-page-digest-backwards
"b" mh-show-burst-digest)
(gnus-define-keys (mh-show-mime-map "K" mh-show-mode-map)
"?" mh-prefix-help
"a" mh-mime-save-parts
"e" mh-show-display-with-external-viewer
"v" mh-show-toggle-mime-part
"o" mh-show-save-mime-part
"i" mh-show-inline-mime-part
"t" mh-show-toggle-mime-buttons
"\t" mh-show-next-button
[backtab] mh-show-prev-button
"\M-\t" mh-show-prev-button)
;;; MH-Show Font Lock
(defun mh-header-field-font-lock (field limit)
"Return the value of a header field FIELD to font-lock.
Argument LIMIT limits search."
(if (= (point) limit)
nil
(let* ((mail-header-end (mh-mail-header-end))
(lesser-limit (if (< mail-header-end limit) mail-header-end limit))
(case-fold-search t))
(when (and (< (point) mail-header-end) ;Only within header
(re-search-forward (format "^%s" field) lesser-limit t))
(let ((match-one-b (match-beginning 0))
(match-one-e (match-end 0)))
(mh-header-field-end)
(if (> (point) limit) ;Don't search for end beyond limit
(goto-char limit))
(set-match-data (list match-one-b match-one-e
(1+ match-one-e) (point)))
t)))))
(defun mh-header-to-font-lock (limit)
"Return the value of a header field To to font-lock.
Argument LIMIT limits search."
(mh-header-field-font-lock "To:" limit))
(defun mh-header-cc-font-lock (limit)
"Return the value of a header field cc to font-lock.
Argument LIMIT limits search."
(mh-header-field-font-lock "cc:" limit))
(defun mh-header-subject-font-lock (limit)
"Return the value of a header field Subject to font-lock.
Argument LIMIT limits search."
(mh-header-field-font-lock "Subject:" limit))
(defun mh-letter-header-font-lock (limit)
"Return the entire mail header to font-lock.
Argument LIMIT limits search."
(if (= (point) limit)
nil
(let* ((mail-header-end (save-match-data (mh-mail-header-end)))
(lesser-limit (if (< mail-header-end limit) mail-header-end limit)))
(when (mh-in-header-p)
(set-match-data (list 1 lesser-limit))
(goto-char lesser-limit)
t))))
(defun mh-show-font-lock-fontify-region (beg end loudly)
"Limit font-lock in `mh-show-mode' to the header.
Used when the option `mh-highlight-citation-style' is set to
\"Gnus\", leaving the body to be dealt with by Gnus highlighting.
The region between BEG and END is given over to be fontified and
LOUDLY controls if a user sees a message about the fontification
operation."
(let ((header-end (mh-mail-header-end)))
(cond
((and (< beg header-end)(< end header-end))
(font-lock-default-fontify-region beg end loudly))
((and (< beg header-end)(>= end header-end))
(font-lock-default-fontify-region beg header-end loudly))
(t
nil))))
(defvar mh-show-font-lock-keywords
'(("^\\(From:\\|Sender:\\)\\(.*\\)"
(1 'default)
(2 'mh-show-from))
(mh-header-to-font-lock
(0 'default)
(1 'mh-show-to))
(mh-header-cc-font-lock
(0 'default)
(1 'mh-show-cc))
("^\\(Reply-To:\\|Return-Path:\\)\\(.*\\)$"
(1 'default)
(2 'mh-show-from))
(mh-header-subject-font-lock
(0 'default)
(1 'mh-show-subject))
("^\\(Apparently-To:\\|Newsgroups:\\)\\(.*\\)"
(1 'default)
(2 'mh-show-cc))
("^\\(In-Reply-To\\|Date\\):\\(.*\\)$"
(1 'default)
(2 'mh-show-date))
(mh-letter-header-font-lock
(0 'mh-show-header append t)))
"Additional expressions to highlight in MH-Show buffers.")
;;;###mh-autoload
(defun mh-show-font-lock-keywords ()
"Return variable `mh-show-font-lock-keywords'."
mh-show-font-lock-keywords)
(defvar mh-show-font-lock-keywords-with-cite
(let* ((cite-chars "[>|}]")
(cite-prefix "A-Za-z")
(cite-suffix (concat cite-prefix "0-9_.@-`'\"")))
(append
mh-show-font-lock-keywords
(list
;; 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)
(2 font-lock-constant-face nil t)
(4 font-lock-comment-face nil t))))))
"Additional expressions to highlight in MH-Show buffers.")
;;;###mh-autoload
(defun mh-show-font-lock-keywords-with-cite ()
"Return variable `mh-show-font-lock-keywords-with-cite'."
mh-show-font-lock-keywords-with-cite)
;;; MH-Show Mode
;; Ensure new buffers won't get this mode if default major-mode is nil.
(put 'mh-show-mode 'mode-class 'special)
;; Shush compiler.
(defvar font-lock-auto-fontify)
;;;###mh-autoload
(define-derived-mode mh-show-mode text-mode "MH-Show"
"Major mode for showing messages in MH-E.\\<mh-show-mode-map>
Email addresses and URLs in the message are highlighted if the
option `goto-address-highlight-p' is on, which it is by default.
To view the web page for a highlighted URL or to send a message
using a highlighted email address, use the middle mouse button or
\\[goto-address-at-point]. See Info node `(mh-e)Sending Mail' to
see how to configure Emacs to send the message using MH-E.
The hook `mh-show-mode-hook' is called upon entry to this mode.
See also `mh-folder-mode'.
\\{mh-show-mode-map}"
(mh-do-in-gnu-emacs
(if (boundp 'tool-bar-map)
(set (make-local-variable 'tool-bar-map) mh-show-tool-bar-map)))
(mh-do-in-xemacs
(mh-tool-bar-init :show))
(set (make-local-variable 'mail-header-separator) mh-mail-header-separator)
(setq paragraph-start (default-value 'paragraph-start))
(mh-show-unquote-From)
(mh-show-xface)
(mh-show-addr)
(setq buffer-invisibility-spec '((vanish . t) t))
(set (make-local-variable 'line-move-ignore-invisible) t)
(make-local-variable 'font-lock-defaults)
;;(set (make-local-variable 'font-lock-support-mode) nil)
(cond
((equal mh-highlight-citation-style 'font-lock)
(setq font-lock-defaults '(mh-show-font-lock-keywords-with-cite t)))
((equal mh-highlight-citation-style 'gnus)
(setq font-lock-defaults '((mh-show-font-lock-keywords)
t nil nil nil
(font-lock-fontify-region-function
. mh-show-font-lock-fontify-region)))
(mh-gnus-article-highlight-citation))
(t
(setq font-lock-defaults '(mh-show-font-lock-keywords t))))
(if (and (featurep 'xemacs)
font-lock-auto-fontify)
(turn-on-font-lock))
(when mh-decode-mime-flag
(mh-make-local-hook 'kill-buffer-hook)
(add-hook 'kill-buffer-hook 'mh-mime-cleanup nil t))
(easy-menu-add mh-show-sequence-menu)
(easy-menu-add mh-show-message-menu)
(easy-menu-add mh-show-folder-menu)
(make-local-variable 'mh-show-folder-buffer)
(buffer-disable-undo)
(use-local-map mh-show-mode-map))
;;; Support Routines
(defun mh-show-unquote-From ()
"Decode >From at beginning of lines for `mh-show-mode'."
(save-excursion
(let ((modified (buffer-modified-p))
(case-fold-search nil)
(buffer-read-only nil))
(goto-char (mh-mail-header-end))
(while (re-search-forward "^>From" nil t)
(replace-match "From"))
(set-buffer-modified-p modified))))
;;;###mh-autoload
(defun mh-show-addr ()
"Use `goto-address'."
(goto-address))
;;;###mh-autoload
(defun mh-gnus-article-highlight-citation ()
"Highlight cited text in current buffer using Gnus."
(interactive)
;; Don't allow Gnus to create buttons while highlighting, maybe this is bad
;; style?
(mh-flet
((gnus-article-add-button (&rest _args) nil))
(let* ((modified (buffer-modified-p))
(gnus-article-buffer (buffer-name))
(gnus-cite-face-list `(,@(cdr gnus-cite-face-list)
,(car gnus-cite-face-list))))
(gnus-article-highlight-citation t)
(set-buffer-modified-p modified))))
(provide 'mh-show)
;; Local Variables:
;; indent-tabs-mode: nil
;; sentence-end-double-space: nil
;; End:
;;; mh-show.el ends here
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