Re: automatically save a specific buffer on exit

[Thierry Volpiatto <thierry.volpiatto@gmail.com>]

Hi,
Andreas Politz <politza@fh-trier.de> writes:

> Hi,
>
> I have a persistent scratch buffer with a file attached
> and I would like emacs to have it saved whenever I
> leave the editor.
> 'kill-emacs-hook' runs to late and `write-file-functions'
> doesn't seem to be aproppriate either.

Kill-emacs-hook work fine here. 
Here the code i use:

,----
| (defvar save-scratch-file "~/.emacs.d/save-scratch.el")
| (defun tv-save-scratch (&optional append)
|   (interactive "P")
|   (with-current-buffer "*scratch*"
|     (widen)
|     (goto-char (point-min))
|     (forward-line 1)
|     (let* ((beg (point))
|            (end (point-max))
|            (buffer-contents (buffer-substring beg end)))
|       (save-excursion
|         (find-file save-scratch-file)
|         (if (or current-prefix-arg
|                 append)
|             (progn
|               (goto-char (point-max))
|               (insert buffer-contents)
|               (save-buffer)
|               (kill-buffer (current-buffer)))
|             (erase-buffer)
|             (goto-char (point-min))
|             (insert buffer-contents)
|             (save-buffer)
|             (kill-buffer (current-buffer)))))))
| 
| (defun tv-restore-scratch-buffer ()
|   (with-current-buffer "*scratch*"
|     (goto-char (point-max))
|     (forward-line)
|     (insert-file-contents save-scratch-file)))
| 
| (add-hook 'kill-emacs-hook 'tv-save-scratch)
| (add-hook 'emacs-startup-hook 'tv-restore-scratch-buffer)
`----


-- 
A + Thierry Volpiatto
Location: Saint-Cyr-Sur-Mer - France