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authorGlenn Morris <rgm@gnu.org>2008-10-30 04:34:15 +0000
committerGlenn Morris <rgm@gnu.org>2008-10-30 04:34:15 +0000
commite24d49123cb9d13332ca2fc108b28e4144e4f10a (patch)
tree3fb42e40a656bb7eb3bb271c4ace85a6c81106b8 /lisp
parent976556c92132724204a49c13c88c28c025ab784d (diff)
downloademacs-e24d49123cb9d13332ca2fc108b28e4144e4f10a.tar.gz
Move to obsolete/
Diffstat (limited to 'lisp')
-rw-r--r--lisp/resume.el128
1 files changed, 0 insertions, 128 deletions
diff --git a/lisp/resume.el b/lisp/resume.el
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-;;; resume.el --- process command line args from within a suspended Emacs job
-
-;; Copyright (C) 1992, 2001, 2002, 2003, 2004, 2005,
-;; 2006, 2007, 2008 Free Software Foundation, Inc.
-
-;; Author: Joe Wells <jbw@bucsf.bu.edu>
-;; Adapted-By: ESR
-;; Keywords: processes
-
-;; 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 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
-;; 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. If not, see <http://www.gnu.org/licenses/>.
-
-;;; Commentary:
-
-;; The purpose of this library is to handle command line arguments
-;; when you resume an existing Emacs job.
-
-;; In order to use it, you must put this code in your .emacs file.
-
-;; (add-hook 'suspend-hook 'resume-suspend-hook)
-;; (add-hook 'suspend-resume-hook 'resume-process-args)
-
-;; You can't get the benefit of this library by using the `emacs' command,
-;; since that always starts a new Emacs job. Instead you must use a
-;; command called `edit' which knows how to resume an existing Emacs job
-;; if you have one, or start a new Emacs job if you don't have one.
-
-;; To define the `edit' command, run the script etc/emacs.csh (if you use CSH),
-;; or etc/emacs.bash if you use BASH. You would normally do this in your
-;; login script.
-
-;; Stephan Gildea suggested bug fix (gildea@bbn.com).
-;; Ideas from Michael DeCorte and other people.
-
-;;; Code:
-
-(defvar resume-emacs-args-file (expand-file-name "~/.emacs_args")
- "*This file is where arguments are placed for a suspended Emacs job.")
-
-(defvar resume-emacs-args-buffer " *Command Line Args*"
- "Buffer that is used by `resume-process-args'.")
-
-(defun resume-process-args ()
- "Handler for command line args given when Emacs is resumed."
- (let ((start-buffer (current-buffer))
- (args-buffer (get-buffer-create resume-emacs-args-buffer))
- length args
- (command-line-default-directory default-directory))
- (unwind-protect
- (progn
- (set-buffer args-buffer)
- (erase-buffer)
- ;; get the contents of resume-emacs-args-file
- (condition-case ()
- (let ((result (insert-file-contents resume-emacs-args-file)))
- (setq length (car (cdr result))))
- ;; the file doesn't exist, ergo no arguments
- (file-error
- (erase-buffer)
- (setq length 0)))
- (if (<= length 0)
- (setq args nil)
- ;; get the arguments from the buffer
- (goto-char (point-min))
- (while (not (eobp))
- (skip-chars-forward " \t\n")
- (let ((begin (point)))
- (skip-chars-forward "^ \t\n")
- (setq args (cons (buffer-substring begin (point)) args)))
- (skip-chars-forward " \t\n"))
- ;; arguments are now in reverse order
- (setq args (nreverse args))
- ;; make sure they're not read again
- (erase-buffer))
- (resume-write-buffer-to-file (current-buffer) resume-emacs-args-file)
- ;; if nothing was in buffer, args will be null
- (or (null args)
- (setq command-line-default-directory
- (file-name-as-directory (car args))
- args (cdr args)))
- ;; actually process the arguments
- (command-line-1 args))
- ;; If the command line args don't result in a find-file, the
- ;; buffer will be left in args-buffer. So we change back to the
- ;; original buffer. The reason I don't just use
- ;; (let ((default-directory foo))
- ;; (command-line-1 args))
- ;; in the context of the original buffer is because let does not
- ;; work properly with buffer-local variables.
- (if (eq (current-buffer) args-buffer)
- (set-buffer start-buffer)))))
-
-;;;###autoload
-(defun resume-suspend-hook ()
- "Clear out the file used for transmitting args when Emacs resumes."
- (save-excursion
- (set-buffer (get-buffer-create resume-emacs-args-buffer))
- (erase-buffer)
- (resume-write-buffer-to-file (current-buffer) resume-emacs-args-file)))
-
-(defun resume-write-buffer-to-file (buffer file)
- "Writes the contents of BUFFER into FILE, if permissions allow."
- (if (not (file-writable-p file))
- (error "No permission to write file %s" file))
- (save-excursion
- (set-buffer buffer)
- (clear-visited-file-modtime)
- (save-restriction
- (widen)
- (write-region (point-min) (point-max) file nil 'quiet))
- (set-buffer-modified-p nil)))
-
-(provide 'resume)
-
-;; arch-tag: c90b2761-4803-4e58-a0ae-c4721368b628
-;;; resume.el ends here