Commit ac6d744e authored by Jim Blandy's avatar Jim Blandy
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Initial revision

parent 1d409421
;; Lisp interface between GNU Emacs and MEDIT package. Emacs under MDL.
;; Copyright (C) 1985 Free Software Foundation, Inc.
;; Principal author K. Shane Hartman
;; 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 1, 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; see the file COPYING. If not, write to
;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
;; >> This package depends on two MDL packages: MEDIT and FORKS which
;; >> can be obtained from the public (network) library at mit-ajax.
(require 'mim-mode)
(defconst medit-zap-file (concat "/tmp/" (user-login-name) ".medit.mud")
"File name for data sent to MDL by Medit.")
(defconst medit-buffer "*MEDIT*"
"Name of buffer in which Medit accumulates data to send to MDL.")
(defconst medit-save-files t
"If non-nil, Medit offers to save files on return to MDL.")
(defun medit-save-define ()
"Mark the previous or surrounding toplevel object to be sent back to MDL."
(let ((start (point)))
(forward-mim-object 1)
(append-to-buffer medit-buffer start (point))
(goto-char start)
(message (buffer-substring start (progn (end-of-line) (point)))))))
(defun medit-save-region (start end)
"Mark the current region to be sent to back to MDL."
(interactive "r")
(append-to-buffer medit-buffer start end)
(message "Current region saved for MDL."))
(defun medit-save-buffer ()
"Mark the current buffer to be sent back to MDL."
(append-to-buffer medit-buffer (point-min) (point-max))
(message "Current buffer saved for MDL."))
(defun medit-zap-define-to-mdl ()
"Return to MDL with surrounding or previous toplevel MDL object."
(defun medit-zap-region-mdl (start end)
"Return to MDL with current region."
(medit-save-region start end)
(defun medit-zap-buffer ()
"Return to MDL with current buffer."
(defun medit-goto-mdl ()
"Return from Emacs to superior MDL, sending saved code.
Optionally, offers to save changed files."
(let ((buffer (get-buffer medit-buffer)))
(if buffer
(set-buffer buffer)
(if (buffer-modified-p buffer)
(write-region (point-min) (point-max) medit-zap-file))
(set-buffer-modified-p nil)
(if medit-save-files (save-some-buffers))
;; Note could handle parallel fork by giving argument "%xmdl". Then
;; mdl would have to invoke with "%emacs".
(defconst medit-mode-map nil)
(if (not medit-mode-map)
(setq medit-mode-map (copy-keymap mim-mode-map))
(define-key medit-mode-map "\e\z" 'medit-save-define)
(define-key medit-mode-map "\e\^z" 'medit-save-buffer)
(define-key medit-mode-map "\^xz" 'medit-goto-mdl)
(define-key medit-mode-map "\^xs" 'medit-zap-buffer)))
(defconst medit-mode-hook (and (boundp 'mim-mode-hook) mim-mode-hook) "")
(setq mim-mode-hook '(lambda () (medit-mode)))
(defun medit-mode (&optional state)
"Major mode for editing text and returning it to a superior MDL.
Like Mim mode, plus these special commands:
(use-local-map medit-mode-map)
(run-hooks 'medit-mode-hook)
(setq major-mode 'medit-mode)
(setq mode-name "Medit"))
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