devdocs/elisp/backups-and-auto_002dsaving.html


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 <h2 class="chapter">Backups and Auto-Saving</h2>  <p>Backup files and auto-save files are two methods by which Emacs tries to protect the user from the consequences of crashes or of the user’s own errors. Auto-saving preserves the text from earlier in the current editing session; backup files preserve file contents prior to the current session. </p> <table class="menu" border="0" cellspacing="0"> <tr>
<td align="left" valign="top">• <a href="backup-files" accesskey="1">Backup Files</a>
</td>
<td> </td>
<td align="left" valign="top">How backup files are made; how their names are chosen. </td>
</tr> <tr>
<td align="left" valign="top">• <a href="auto_002dsaving" accesskey="2">Auto-Saving</a>
</td>
<td> </td>
<td align="left" valign="top">How auto-save files are made; how their names are chosen. </td>
</tr> <tr>
<td align="left" valign="top">• <a href="reverting" accesskey="3">Reverting</a>
</td>
<td> </td>
<td align="left" valign="top">
<code>revert-buffer</code>, and how to customize what it does. </td>
</tr> </table><div class="_attribution">
  <p class="_attribution-p">
    Copyright &copy; 1990-1996, 1998-2022 Free Software Foundation, Inc. <br>Licensed under the GNU GPL license.<br>
    <a href="https://www.gnu.org/software/emacs/manual/html_node/elisp/Backups-and-Auto_002dSaving.html" class="_attribution-link">https://www.gnu.org/software/emacs/manual/html_node/elisp/Backups-and-Auto_002dSaving.html</a>
  </p>
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