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copied!<p>In Emacs 24 at least (I can't check a prior version right now), the docstring for <code>view-lossage</code> states:</p> <blockquote> <p>Display last 300 input keystrokes.</p> <p>To record all your input on a file, use `open-dribble-file'.</p> </blockquote> <p>And <kbd>C-h</kbd><kbd>f</kbd> <code>open-dribble-file</code> <kbd>RET</kbd> tells me:</p> <blockquote> <p>open-dribble-file is an interactive built-in function in `C source code'.</p> <p>(open-dribble-file FILE)</p> <p>Start writing all keyboard characters to a dribble file called FILE. If FILE is nil, close any open dribble file. The file will be closed when Emacs exits.</p> </blockquote> <p>So simply add something like the following to your .emacs file:</p> <pre class="lang-lisp prettyprint-override"><code>(open-dribble-file (expand-file-name "~/.emacs.d/lossage.txt")) </code></pre> <p>Experimentally this clobbers the file if it already exists, so you'll need to deal with that.</p> <p>Here's one approach. It accounts for multiple Emacs sessions by using <code>make-temp-name</code> to generate a semi-random filename for the dribble file, and then appends the contents of that to a primary lossage log file when Emacs exists. (If Emacs crashes, it would leave behind the temp file for you to deal with manually.)</p> <pre class="lang-el prettyprint-override"><code>(defmacro my-persistent-dribble-file (file) "Append the dribble-file for this session to persistent lossage log FILE." `(let* ((persistent-file (expand-file-name ,file)) (temporary-file (make-temp-name (concat persistent-file "-"))) (persistent-arg (shell-quote-argument persistent-file)) (temporary-arg (shell-quote-argument temporary-file)) (append-dribble-command (format "cat %s >>%s && rm %s" temporary-arg persistent-arg temporary-arg))) (open-dribble-file temporary-file) (eval `(add-hook 'kill-emacs-hook (lambda () (shell-command ,append-dribble-command)))))) (my-persistent-dribble-file "~/.emacs.d/lossage") </code></pre>

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