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Re: extview.el --- open files with external viewer

From: spamfilteraccount
Subject: Re: extview.el --- open files with external viewer
Date: 29 Mar 2006 02:16:34 -0800
User-agent: G2/0.2

Richard Stallman wrote:
> Have you signed a copyright assignment that gives the copyright
> to the FSF?  If not, then the copyright notice should carry your
> name, not ours.

Thanks for the warning, Richard. I'm no copyright expert. Probably you
spent more time investigating this subject than I did. ;)

Here's the same version with a (hopefully) correct copyright.


;;; extview.el --- open files with external viewer

;; ;; Copyright (C) 2006 Tamas Patrovics

;; This file 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.

;; This file 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, Inc., 59 Temple Place - Suite 330,
;; Boston, MA 02111-1307, USA.

;;; Commentary:

;; Load the library and try opening a file which has an associated
;; application in `extview-application-associations'.

;;; Code:

(require 'cl)

(defvar extview-application-associations
  '(("\\.pdf$" . "acroread"))
  "List of (REGEXP . APPLICATION) descriptors which are tested for the
file name to be opened. The first matching application is used to open
the file. If no application matches then normal `find-file' is

(defadvice find-file (around extview-find-file
                             (filename &optional wildcards) activate)
  "Around advice for find-file which checks if the file should be
opened with an external viewer instead of Emacs."
  (interactive "FFind file: \np")
  (let ((app (some (lambda (descriptor)
                     (if (string-match (car descriptor) filename)
                         (cdr descriptor)))
    (if app
        (let ((logbuffer "*extview log*"))
          (start-process "extview-process" logbuffer
                         app (expand-file-name filename))
          (message (concat "File is opened with an external viewer. "
                           "See buffer %s for status messages.")


(provide 'extview)
;;; extview.el ends here

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