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I'm using Edit with Emacs to edit Stack Overflow and Stack Exchange sites.
Currently I'm doing it with this message ;-)

When I click on the button under the text area of Chrome browser, I get a new file opened on Emacs. Current file is named emacs.stackexchange.com/questions/ask. When I press save the file: C-x C-s, the text gets updated in the browser.

Is the file saved somewhere in the filesystem, so I can recover it locally, just in case I kill the current buffer?

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    Not an answer, but you may want to check out the excellent sx.el (github.com/vermiculus/sx.el) which provides a StackExchange client in Emacs. – glucas Sep 11 '15 at 16:30
  • Wow, this sx.el is great! I'm writing this comment from it... ;-) Thanks a lot! – nephewtom Sep 12 '15 at 8:50
  • Mmm, is it possible in sx.el to refresh on the browser (visit) while I'm answering or asking? – nephewtom Sep 12 '15 at 8:54
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Looking at the code it does not seem that edit server save the contents to a file. However it does provide a hook edit-server-done-hook which running every time you do edit-server-save (C-xC-s) or edit-server-done (C-cC-c) you might add a function to the hook to save the current contents to a file.

A not-so-well-tested example is given below

(defvar my-edit-with-emacs-backups-dir (locate-user-emacs-file "edit-with-emacs-saves"))

(unless (file-exists-p my-edit-with-emacs-backups-dir)
  (make-directory my-edit-with-emacs-backups-dir))

(defun my-backup-edit-with-emacs-contents ()
  (let ((backup-directory-alist (list (cons "." my-edit-with-emacs-backups-dir))))
    (save-excursion
      (write-region nil nil (car (find-backup-file-name (buffer-name))) nil 0))))

(add-hook 'edit-server-done-hook #'my-backup-edit-with-emacs-contents)

With the above the you edit-with-buffer contents will be backed up in ~/.emacs.d/edit-with-emacs-saves directory whenever you do edit-server-save (C-xC-s) or edit-server-done (C-cC-c)

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