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+<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en"><head>
+<meta content="text/html; charset=ISO-8859-1" http-equiv="Content-Type" />
+<!--
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<p class="apache">Apache HTTP Server Version 2.5</p>
-<img alt="" src="../images/feather.gif" /></div>
+<img alt="" src="../images/feather.png" /></div>
<div class="up"><a href="./"><img title="<-" alt="<-" src="../images/left.gif" /></a></div>
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<a href="http://www.apache.org/">Apache</a> > <a href="http://httpd.apache.org/">HTTP Server</a> > <a href="http://httpd.apache.org/docs/">Documentation</a> > <a href="../">Version 2.5</a> > <a href="./">Modules</a></div>
<div id="quickview"><h3 class="directives">Directives</h3>
<ul id="toc">
<li><img alt="" src="../images/down.gif" /> <a href="#substitute">Substitute</a></li>
+<li><img alt="" src="../images/down.gif" /> <a href="#substituteinheritbefore">SubstituteInheritBefore</a></li>
<li><img alt="" src="../images/down.gif" /> <a href="#substitutemaxlinelength">SubstituteMaxLineLength</a></li>
</ul>
-<ul class="seealso"><li><a href="#comments_section">Comments</a></li></ul></div>
+<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__&list_id=144532&product=Apache%20httpd-2&query_format=specific&order=changeddate%20DESC%2Cpriority%2Cbug_severity&component=mod_substitute">Known issues</a></li><li><a href="https://bz.apache.org/bugzilla/enter_bug.cgi?product=Apache%20httpd-2&component=mod_substitute">Report a bug</a></li></ul><h3>See also</h3>
+<ul class="seealso">
+<li><a href="#comments_section">Comments</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><a name="Substitute" id="Substitute">Substitute</a> <a name="substitute" id="substitute">Directive</a></h2>
or regex of a subsequent one.</dd>
</dl>
- <div class="example"><h3>Example</h3><pre class="prettyprint lang-config"><Location />
+ <div class="example"><h3>Example</h3><pre class="prettyprint lang-config"><Location "/">
AddOutputFilterByType SUBSTITUTE text/html
Substitute s/foo/bar/ni
</Location></pre>
<p>If either the pattern or the substitution contain a slash
character then an alternative delimiter should be used:</p>
- <div class="example"><h3>Example of using an alternate delimiter</h3><pre class="prettyprint lang-config"><Location />
+ <div class="example"><h3>Example of using an alternate delimiter</h3><pre class="prettyprint lang-config"><Location "/">
AddOutputFilterByType SUBSTITUTE text/html
Substitute "s|<BR */?>|<br />|i"
</Location></pre>
<p>Backreferences can be used in the comparison and in the substitution,
when regular expressions are used, as illustrated in the following example: </p>
- <div class="example"><h3>Example of using backreferences and captures</h3><pre class="prettyprint lang-config"><Location />
+ <div class="example"><h3>Example of using backreferences and captures</h3><pre class="prettyprint lang-config"><Location "/">
AddOutputFilterByType SUBSTITUTE text/html
- # "foo=k,bar=k" -> "foo/bar=k"
+ # "foo=k,bar=k" -> "foo/bar=k"
Substitute "s|foo=(\w+),bar=\1|foo/bar=$1"
</Location></pre>
</div>
<p>In this case, <code>mod_substutite</code> can be used to rewrite
those URLs into something that will work from the front end:</p>
- <div class="example"><h3>Rewriting URLs embedded in proxied content</h3><pre class="prettyprint lang-config">ProxyPass /blog/ http://internal.blog.example.com
-ProxyPassReverse /blog/ http://internal.blog.example.com/
+ <div class="example"><h3>Rewriting URLs embedded in proxied content</h3><pre class="prettyprint lang-config">ProxyPass "/blog/" "http://internal.blog.example.com"
+ProxyPassReverse "/blog/" "http://internal.blog.example.com/"
Substitute "s|http://internal.blog.example.com/|http://www.example.com/blog/|i"</pre>
</div>
fixing up the HTML response as well.</p>
+</div>
+<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
+<div class="directive-section"><h2><a name="SubstituteInheritBefore" id="SubstituteInheritBefore">SubstituteInheritBefore</a> <a name="substituteinheritbefore" id="substituteinheritbefore">Directive</a></h2>
+<table class="directive">
+<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Change the merge order of inherited patterns</td></tr>
+<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>SubstituteInheritBefore on|off</code></td></tr>
+<tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>SubstituteInheritBefore on</code></td></tr>
+<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>directory, .htaccess</td></tr>
+<tr><th><a href="directive-dict.html#Override">Override:</a></th><td>FileInfo</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_substitute</td></tr>
+<tr><th><a href="directive-dict.html#Compatibility">Compatibility:</a></th><td>Available in httpd 2.5 and later</td></tr>
+</table>
+ <p>Whether to apply the inherited <code class="directive">Substitute</code>
+ patterns first (<code>on</code>), or after the ones of the current
+ context (<code>off</code>).
+ The latter was the default in versions 2.4 and earlier, but changed
+ starting with 2.5, hence <code class="directive">SubstituteInheritBefore</code>
+ set to <code>off</code> allows to restore the legacy behaviour.
+ <code class="directive">SubstituteInheritBefore</code> is itself inherited,
+ hence contexts that inherit it (those that don't specify their own
+ <code class="directive">SubstituteInheritBefore</code> value) will apply the
+ closest defined merge order.</p>
+
</div>
<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div>
<div class="directive-section"><h2><a name="SubstituteMaxLineLength" id="SubstituteMaxLineLength">SubstituteMaxLineLength</a> <a name="substitutemaxlinelength" id="substitutemaxlinelength">Directive</a></h2>
<code>G</code> to provide the size in bytes, kilobytes, megabytes
or gigabytes respectively.</p>
- <div class="example"><h3>Example</h3><pre class="prettyprint lang-config"><Location />
+ <div class="example"><h3>Example</h3><pre class="prettyprint lang-config"><Location "/">
AddOutputFilterByType SUBSTITUTE text/html
SubstituteMaxLineLength 10m
Substitute s/foo/bar/ni
}
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-<p class="apache">Copyright 201
5 The Apache Software Foundation.<br />Licensed under the <a href="http://www.apache.org/licenses/LICENSE-2.0">Apache License, Version 2.0</a>.</p>
+<p class="apache">Copyright 201
6 The Apache Software Foundation.<br />Licensed under the <a href="http://www.apache.org/licenses/LICENSE-2.0">Apache License, Version 2.0</a>.</p>
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