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+;;; vms-pmail.el -- use Emacs as the editor within VMS mail.
+;; Copyright (C) 1992 Free Software Foundation, Inc.
+
+;; Author: Roland B Roberts <roberts@nsrl31.nsrl.rochester.edu>
+
+;; 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.
+
+;;; Code:
+
+;;;
+;;; Quick hack to use emacs as mail editor.  There are a *bunch* of
+;;; changes scattered throughout emacs to make this work, namely:
+;;; (1) mod to sysdep.c to allow emacs to attach to a process other
+;;;     than the one that originally spawned it.
+;;; (2) mod to kepteditor.com to define the logical emacs_parent_pid
+;;;     which is what sysdep.c looks for, and define the logical
+;;;     emacs_command_args which contains the command line
+;;; (3) mod to re-parse command line arguments from emacs_command_args
+;;;     then execute them as though emacs were just starting up.
+;;;
+(defun vms-pmail-save-and-exit ()
+  "Save current buffer and exit emacs.
+If this emacs cannot be suspended, you will be prompted about modified
+buffers other than the mail buffer.  BEWARE --- suspending emacs without
+saving your mail buffer causes mail to abort the send (potentially useful
+since the mail buffer is still here)."
+  (interactive)
+  (basic-save-buffer)
+  (if (vms-system-info "LOGICAL" "DONT_SUSPEND_EMACS")
+      (progn
+        (save-some-buffers)
+        (kill-emacs 1))
+    (kill-buffer (current-buffer))
+    (suspend-emacs)))
+
+(defun vms-pmail-abort ()
+  "Mark buffer as unmodified and exit emacs.
+When the editor is exited without saving its buffer, VMS mail does not
+send a message.  If you have other modified buffers you will be
+prompted for what to do with them."
+  (interactive)
+  (if (not (yes-or-no-p "Really abort mail? "))
+      (ding)
+    (not-modified)
+    (if (vms-system-info "LOGICAL" "DONT_SUSPEND_EMACS")
+        (progn
+          (save-some-buffers)
+          (kill-emacs 1))
+      (kill-buffer (current-buffer))
+      (suspend-emacs))))
+
+(defun vms-pmail-setup ()
+  "Set up file assuming use by VMS MAIL utility.
+The buffer is put into text-mode, auto-save is turned off and the
+following bindings are established.
+
+\\[vms-pmail-save-and-exit]     vms-pmail-save-and-exit
+\\[vms-pmail-abort]     vms-pmail-abort
+
+All other emacs commands are still available."
+  (interactive)
+  (auto-save-mode -1)
+  (text-mode)
+  (let ((default (vms-system-info "LOGICAL" "SYS$SCRATCH"))
+        (directory (file-name-directory (buffer-file-name)))
+        (filename (file-name-nondirectory (buffer-file-name))))
+    (if (string= directory "SYS$SCRATCH:")
+        (progn
+          (cd default)
+          (setq buffer-file-name (concat default filename))))
+    (use-local-map (copy-keymap (current-local-map)))
+    (local-set-key "\C-c\C-c" 'vms-pmail-save-and-exit)
+    (local-set-key "\C-c\C-g" 'vms-pmail-abort)))
+
+(defun indicate-mail-reply-text ()
+  "Prepares received mail for re-sending by placing >'s on each line."
+  (interactive)
+  (goto-char (point-min))
+  (while (not (eobp))
+    (insert ">")
+    (beginning-of-line)
+    (forward-line 1))
+  (set-buffer-modified-p nil)
+  (goto-char (point-min)))
+
+(defun insert-signature ()
+  "Moves to the end of the buffer and inserts a \"signature\" file.
+First try the file indicated by environment variable MAIL$TRAILER.
+If that fails, try the file \"~/.signature\".
+If neither file exists, fails quietly."
+  (interactive)
+  (end-of-buffer)
+  (newline)
+  (if (vms-system-info "LOGICAL" "MAIL$TRAILER")
+      (if (file-attributes (vms-system-info "LOGICAL" "MAIL$TRAILER"))
+          (insert-file-contents (vms-system-info "LOGICAL" "MAIL$TRAILER"))
+        (if (file-attributes "~/.signature")
+            (insert-file-contents "~/.signature")))))
+