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Rename

<!DOCTYPE html SYSTEM "about:legacy-compat">
<html lang="en"><head><META http-equiv="Content-Type" content="text/html; charset=UTF-8">
<meta content="width=device-width, initial-scale=1" name="viewport">

<title>mod_speling - Apache HTTP Server Version 2.4</title>
<link href="../../style/css/manual.css" rel="stylesheet" media="all" type="text/css" title="Main stylesheet">
<link href="../../style/css/manual-loose-100pc.css" rel="alternate stylesheet" media="all" type="text/css" title="No Sidebar - Default font size">
<link href="../../style/css/manual-print.css" rel="stylesheet" media="print" type="text/css"><link rel="stylesheet" type="text/css" href="../../style/css/prettify.css">
<script src="../../style/scripts/prettify.min.js">
</script>

<p>Requests to documents sometimes cannot be served by the core
    apache server because the request was misspelled or
    miscapitalized. This module addresses this problem by trying to
    find a matching document, even after all other modules gave up.
    It does its work by comparing each document name in the
    requested directory against the requested document name
    <strong>without regard to case</strong>, and allowing
    <strong>up to one misspelling</strong> (character insertion /
    omission / transposition or wrong character). A list is built
    with all document names which were matched using this
    strategy. <strong>Erroneous extension</strong> can also be fixed
    by this module.</p>

<p>If, after scanning the directory,</p>

<ul>
      <li>no matching document was found, Apache will proceed as
      usual and return an error (<code>404 - document not found</code>).</li>

<li>only one document is found that "almost" matches the
      request, then it is returned in the form of a redirection
      response (<code>301 - Moved Permanently</code>).</li>

<li>more than one document with a close match was found, then
      the list of the matches is returned to the client, and the
      client can select the correct candidate (<code>300 - Multiple
      Choices</code>).</li>
    </ul>

</div>
<div id="quickview"><h3 class="directives">Directives</h3>
<ul id="toc">
<li><img alt="" src="../../images/down.gif"> <a href="#checkbasenamematch">CheckBasenameMatch</a></li>
<li><img alt="" src="../../images/down.gif"> <a href="#checkcaseonly">CheckCaseOnly</a></li>
<li><img alt="" src="../../images/down.gif"> <a href="#checkspelling">CheckSpelling</a></li>
</ul>
<h3>Bugfix checklist</h3><ul class="seealso"><li><a href="https://www.apache.org/dist/httpd/CHANGES_2.4">httpd changelog</a></li><li><a href="https://bz.apache.org/bugzilla/buglist.cgi?bug_status=__open__&amp;list_id=144532&amp;product=Apache%20httpd-2&amp;query_format=specific&amp;order=changeddate%20DESC%2Cpriority%2Cbug_severity&amp;component=mod_speling">Known issues</a></li><li><a href="https://bz.apache.org/bugzilla/enter_bug.cgi?product=Apache%20httpd-2&amp;component=mod_speling">Report a bug</a></li></ul></div>

<div class="top"><a href="#page-header"><img alt="top" src="../../images/up.gif"></a></div>
<div class="directive-section"><h2 id="checkbasenamematch"><span id="CheckBasenameMatch">CheckBasenameMatch</span> Directive <a title="Permanent link" href="#checkbasenamematch" class="permalink">&para;</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Also match files with differing file name extensions.</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>CheckBasenameMatch on|off</code></td></tr>
<tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>CheckBasenameMatch On</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host, directory, .htaccess</td></tr>
<tr><th><a href="directive-dict.html#Override">Override:</a></th><td>Options</td></tr>
<tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr>
<tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_speling</td></tr>
<tr><th><a href="directive-dict.html#Compatibility">Compatibility:</a></th><td>Available in httpd 2.4.50 and later</td></tr>
</table>
    <p>When set, this directive extends the action of the spelling correction
    to the file name extension. For example a file <code>foo.gif</code> will
    match a request for <code>foo</code> or <code>foo.jpg</code>. This can be
    particularly useful in conjunction with
    <a href="../content-negotiation.html">MultiViews</a>.</p>

</div>
<div class="top"><a href="#page-header"><img alt="top" src="../../images/up.gif"></a></div>
<div class="directive-section"><h2 id="checkcaseonly"><span id="CheckCaseOnly">CheckCaseOnly</span> Directive <a title="Permanent link" href="#checkcaseonly" class="permalink">&para;</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Limits the action of the speling module to case corrections</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>CheckCaseOnly on|off</code></td></tr>
<tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>CheckCaseOnly Off</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host, directory, .htaccess</td></tr>
<tr><th><a href="directive-dict.html#Override">Override:</a></th><td>Options</td></tr>
<tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr>
<tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_speling</td></tr>
</table>
    <p>When set, this directive limits the action of the spelling correction
    to lower/upper case changes.  Other potential corrections are not performed,
    except when <code class="directive"><a href="#checkbasenamematch">CheckBasenameMatch</a></code> is also set.</p>

</div>
<div class="top"><a href="#page-header"><img alt="top" src="../../images/up.gif"></a></div>
<div class="directive-section"><h2 id="checkspelling"><span id="CheckSpelling">CheckSpelling</span> Directive <a title="Permanent link" href="#checkspelling" class="permalink">&para;</a></h2>
<table class="directive">
<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Enables the spelling
module</td></tr>
<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>CheckSpelling on|off</code></td></tr>
<tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>CheckSpelling Off</code></td></tr>
<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host, directory, .htaccess</td></tr>
<tr><th><a href="directive-dict.html#Override">Override:</a></th><td>Options</td></tr>
<tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr>
<tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_speling</td></tr>
</table>
    <p>This directive enables or disables the spelling module. When
    enabled, keep in mind that</p>

<ul>
      <li>the directory scan which is necessary for the spelling
      correction will have an impact on the server's performance
      when many spelling corrections have to be performed at the
      same time.</li>

<li>the document trees should not contain sensitive files
      which could be matched inadvertently by a spelling
      "correction".</li>

<li>the module is unable to correct misspelled user names (as
      in <code>http://my.host/~apahce/</code>), just file names or
      directory names.</li>

<li>spelling corrections apply strictly to existing files, so
      a request for the <code>&lt;Location /status&gt;</code> may
      get incorrectly treated as the negotiated file
      "<code>/stats.html</code>".</li>
    </ul>

<p><code class="module"><a href="../mod/mod_speling.html">mod_speling</a></code> should not be enabled in <a href="mod_dav.html">DAV</a>
    enabled directories, because it will try to "spell fix" newly created
    resource names against existing filenames, e.g., when trying to upload
    a new document <code>doc43.html</code> it might redirect to an existing
    document <code>doc34.html</code>, which is not what was intended.
    </p>

</div>
</div>
<div class="bottomlang">
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</div><div id="footer">
<p class="apache">Copyright 2026 The Apache Software Foundation.<br>Licensed under the <a href="https://www.apache.org/licenses/LICENSE-2.0">Apache License, Version 2.0</a>.</p>
<p class="menu"><a href="../mod/index.html">Modules</a> | <a href="../mod/quickreference.html">Directives</a> | <a href="https://cwiki.apache.org/confluence/display/httpd/FAQ">FAQ</a> | <a href="../glossary.html">Glossary</a> | <a href="../sitemap.html">Sitemap</a> | <a href="https://bz.apache.org/bugzilla/enter_bug.cgi?product=Apache%20httpd-2">Report a bug</a></p></div><script><![CDATA[//><!]]></script>
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