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;;; mu4e-actions.el -- part of mu4e, the mu mail user agent
;; Copyright (C) 2011-2012 Dirk-Jan C. Binnema
;; Author: Dirk-Jan C. Binnema <>
;; Maintainer: Dirk-Jan C. Binnema <>
;; This file is not 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
;; 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 <>.
;;; Commentary:
;; Example actions for messages, attachments (see chapter 'Actions' in the
;; manual)
;;; Code:
(eval-when-compile (byte-compile-disable-warning 'cl-functions))
(require 'cl)
(require 'mu4e-utils)
(require 'mu4e-message)
(require 'mu4e-meta)
(defun mu4e-action-count-lines (msg)
"Count the number of lines in the e-mail message.
Works for headers view and message-view."
(message "Number of lines: %s"
(concat "wc -l < " (shell-quote-argument (mu4e-message-field msg :path))))))
(defvar mu4e-msg2pdf (concat mu4e-builddir "/toys/msg2pdf/msg2pdf")
"Path to the msg2pdf toy.")
(defun mu4e-action-view-as-pdf (msg)
"Convert the message to pdf, then show it.
Works for the message view."
(unless (file-executable-p mu4e-msg2pdf)
(mu4e-error "msg2pdf not found; please set `mu4e-msg2pdf'"))
(let* ((pdf
(concat mu4e-msg2pdf " "
(shell-quote-argument (mu4e-message-field msg :path))
" 2> /dev/null")))
(pdf (and pdf (> (length pdf) 5)
(substring pdf 0 -1)))) ;; chop \n
(unless (and pdf (file-exists-p pdf))
(mu4e-warn "Failed to create PDF file"))
(find-file pdf)))
(defun mu4e-action-view-in-browser (msg)
"View the body of the message in a web browser.
You can influence the browser to use with the variable
(let* ((html (mu4e-message-field msg :body-html))
(txt (mu4e-message-field msg :body-txt))
(tmpfile (format "%s%x.html" temporary-file-directory (random t))))
(unless (or html txt)
(mu4e-error "No body part for this message"))
;; simplistic -- but note that it's only an example...
(insert (or html (concat "<pre>" txt "</pre>")))
(write-file tmpfile)
(browse-url (concat "file://" tmpfile)))))
(defconst mu4e-text2speech-command "festival --tts"
"Program that speaks out text it receives on standard-input.")
(defun mu4e-action-message-to-speech (msg)
"Pronounce the message text using `mu4e-text2speech-command'."
(unless (mu4e-message-field msg :body-txt)
(mu4e-warn "No text body for this message"))
(insert (mu4e-message-field msg :body-txt))
(shell-command-on-region (point-min) (point-max)
(defvar mu4e-captured-message nil
"The last-captured message (the s-expression).")
(defun mu4e-action-capture-message (msg)
"Remember MSG; we can create a an attachment based on this msg
with `mu4e-compose-attach-captured-message'."
(setq mu4e-captured-message msg)
(message "Message has been captured"))
(defvar mu4e-org-contacts-file nil
"File to store contact information for org-contacts.
Needed by `mu4e-action-add-org-contact'.")
(eval-when-compile ;; silence compiler warning about free variable
(unless (require 'org-capture nil 'noerror)
(defvar org-capture-templates nil)))
(defun mu4e-action-add-org-contact (msg)
"Add an org-contact entry based on the From: address of the
current message (in headers or view). You need to set
`mu4e-org-contacts-file' to the full path to the file where you
store your org-contacts."
(unless (require 'org-capture nil 'noerror)
(mu4e-error "org-capture is not available."))
(unless mu4e-org-contacts-file
(mu4e-error "`mu4e-org-contacts-file' is not defined."))
(let* ((sender (car-safe (mu4e-message-field msg :from)))
(name (car-safe sender)) (email (cdr-safe sender))
"* %s%%?\n"
(or name email "")
(or email "")))
(key "mu4e-add-org-contact-key")
(append org-capture-templates
(list (list key "contacts" 'entry
(list 'file mu4e-org-contacts-file) blurb)))))
(message "%S" org-capture-templates)
(when (fboundp 'org-capture)
(org-capture nil key))))
(defun mu4e-action-git-apply-patch (msg)
"Apply the git [patch] message."
(let ((path (read-directory-name "Target directory: " nil "~/" t) ))
(format "cd %s; git apply %s"
(mu4e-message-field msg :path)))))
(defvar mu4e-action-tags-header "X-Keywords"
"Header where tags are stored. Used by `mu4e-action-retag-message'.
Make sure it is one of the headers mu recognizes for storing
tags: X-Keywords, X-Label, Keywords. Also note that changing
this setting on already tagged messages can lead to messages
with multiple tags headers.")
(defun mu4e~contains-line-matching (regexp path)
"Determine whether the file at path contains a line matching
the given regexp."
(insert-file-contents path)
(goto-char (point-min))
(if (re-search-forward regexp nil t)
(defun mu4e~replace-first-line-matching (regexp to-string path)
"Replace the first line in the file at path that matches regexp
with the string replace."
(with-temp-file path
(insert-file-contents path)
(goto-char (point-min))
(if (re-search-forward regexp nil t)
(replace-match to-string nil nil)))))
(defun mu4e-action-retag-message (msg &optional retag-arg)
"Change tags of a message. Example: +tag \"+long tag\" -oldtag
adds 'tag' and 'long tag', and removes oldtag."
(let* ((retag (or retag-arg (read-string "Tags: ")))
(path (mu4e-message-field msg :path))
(maildir (mu4e-message-field msg :maildir))
(oldtags (mu4e-message-field msg :tags))
(header mu4e-action-tags-header)
(sep (cond ((string= header "Keywords") " ")
((string= header "X-Label") " ")
((string= header "X-Keywords") ", ")
(t ", ")))
(taglist (if oldtags (copy-sequence oldtags) '()))
(dolist (tag (split-string-and-unquote retag) taglist)
((string-match "^\\+\\(.+\\)" tag)
(setq taglist (push (match-string 1 tag) taglist)))
((string-match "^\\-\\(.+\\)" tag)
(setq taglist (delete (match-string 1 tag) taglist)))
(setq taglist (push tag taglist)))))
(setq taglist (sort (delete-dups taglist) 'string<))
(setq tagstr (mapconcat 'identity taglist sep))
(setq tagstr (replace-regexp-in-string "[\\&]" "\\\\\\&" tagstr))
(setq tagstr (replace-regexp-in-string "[/]" "\\&" tagstr))
(if (not (mu4e~contains-line-matching (concat header ":.*") path))
;; Add tags header just before the content
"^$" (concat header ": " tagstr "\n") path)
;; replaces keywords, restricted to the header
(concat header ":.*")
(concat header ": " tagstr)
(mu4e-message (concat "tagging: " (mapconcat 'identity taglist ", ")))
(mu4e-refresh-message path maildir)))
(provide 'mu4e-actions)
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