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- ;;; Metamail interface for GNU Emacs
- ;; Copyright (C) 1993 Masanobu UMEDA
-
- ;; Author: Masanobu UMEDA <umerin@mse.kyutech.ac.jp>
- ;; Version: $Header: metamail.el,v 1.3 93/06/21 15:37:28 umerin Exp $
- ;; Keywords: mail, news, mime, multimedia
-
- ;; 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 2, 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; see the file COPYING. If not, write to
- ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
-
- ;;; Commentary:
-
- ;; LCD Archive Entry:
- ;; metamail|Masanobu UMEDA|umerin@mse.kyutech.ac.jp|
- ;; Metamail interface for GNU Emacs|
- ;; $Date: 93/06/21 15:37:28 $|$Revision: 1.3 $|~/misc/metamail.el.Z|
-
- ;; Note: Metamail does not have all options which is compatible with
- ;; the environment variables. For that reason, matamail.el have to
- ;; hack the environment variables. In addition, there is no way to
- ;; display all header fields without extra informative body messages
- ;; which is suppressed by "-q" option.
-
- ;; The idea of using metamail to process MIME messages is from
- ;; gnus-mime.el by Spike <Spike@world.std.com>.
-
- ;;; Code:
-
- (defvar metamail-program-name "metamail"
- "*Metamail program name.")
-
- (defvar metamail-environment "KEYHEADS='*';export KEYHEADS;"
- "*Environment variables for Metamail.
- It must be an emtpy string or a string terminated with ';'.")
-
- (defvar metamail-switches '("-m" "emacs" "-x" "-d" "-z")
- "*Switches for Metamail program.
- -z is required to remove zap file.")
-
- (defun metamail-buffer (&optional buffer)
- "Process current buffer through 'metamail'.
- Optional argument BUFFER specifies a buffer to be filled (nil means current)."
- (interactive)
- (metamail-region (point-min) (point-max) buffer))
-
- (defun metamail-region (beg end &optional buffer)
- "Process current region through 'metamail'.
- Optional argument BUFFER specifies a buffer to be filled (nil means current)."
- (interactive "r")
- (let ((curbuf (current-buffer))
- (buffer-read-only nil)
- (metafile (make-temp-name "/tmp/metamail")))
- (save-excursion
- ;; Gee! Metamail does not ouput to stdout if input comes from
- ;; stdin.
- (write-region beg end metafile nil 'nomessage)
- (if buffer
- (set-buffer buffer))
- (setq buffer-read-only nil)
- ;; Clear destination buffer.
- (if (eq curbuf (current-buffer))
- (delete-region beg end)
- (delete-region (point-min) (point-max)))
- ;; We have to pass the environment variable KEYHEADS to /bin/sh
- ;; to display all header fields. Metamail should have an
- ;; optional argument to pass such information directly.
- (apply (function call-process)
- "/bin/sh"
- nil
- t ;Output to current buffer
- t ;Force redisplay
- (list "-c"
- ;; Construct environment and the command.
- (concat
- metamail-environment
- metamail-program-name
- " "
- (mapconcat (function identity) metamail-switches " ")
- " "
- metafile
- )))
- )))
-
- ;(defun metamail-region (beg end &optional buffer)
- ; "Process current region through 'metamail'.
- ;Optional argument BUFFER specifies a buffer to be filled (nil means current)."
- ; (interactive "r")
- ; (let ((curbuf (current-buffer))
- ; (buffer-read-only nil)
- ; (metafile (make-temp-name "/tmp/metamail")))
- ; (save-excursion
- ; (write-region (point-min) (point-max) metafile nil 'nomessage)
- ; (if (eq curbuf
- ; (if buffer (get-buffer buffer) (current-buffer)))
- ; (delete-region (point-min) (point-max)))
- ; (apply (function call-process)
- ; metamail-program-name
- ; nil
- ; (or buffer t) ;BUFFER or current buffer
- ; nil ;don't redisplay
- ; (append metamail-switches (list metafile)))
- ; )))
-
- (provide 'metamail)
-
- ;;; metamail.el ends here
-