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| author | Eric Covener <covener@apache.org> | 2017-12-31 17:12:55 +0100 |
|---|---|---|
| committer | Eric Covener <covener@apache.org> | 2017-12-31 17:12:55 +0100 |
| commit | 82b020d50ad2c81251e6cacba7f61578564e540a (patch) | |
| tree | 3a8f9f76d98616fc1ca61e0ce8ce3f2be63b606b /docs/manual/mod/mod_substitute.html.en | |
| parent | xform (diff) | |
| download | apache2-82b020d50ad2c81251e6cacba7f61578564e540a.tar.xz apache2-82b020d50ad2c81251e6cacba7f61578564e540a.zip | |
up to date xform
git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1819741 13f79535-47bb-0310-9956-ffa450edef68
Diffstat (limited to '')
| -rw-r--r-- | docs/manual/mod/mod_substitute.html.en | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/docs/manual/mod/mod_substitute.html.en b/docs/manual/mod/mod_substitute.html.en index b373cc130a..26397c7ae4 100644 --- a/docs/manual/mod/mod_substitute.html.en +++ b/docs/manual/mod/mod_substitute.html.en @@ -58,7 +58,7 @@ <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>expr= substitution values were added in 2.5.1</td></tr> +<tr><th><a href="directive-dict.html#Compatibility">Compatibility:</a></th><td>"expr=" substitution values were added in 2.5.1</td></tr> </table> <p>The <code class="directive">Substitute</code> directive specifies a search and replace pattern to apply to the response body.</p> @@ -123,7 +123,7 @@ </div> <p> When using an <a href="../expr.html">expression</a> for the - <var>substitution</var>, regular expression backreferencwa must be + <var>substitution</var>, regular expression backreferences must be backslash ('\') escaped as illustrated in the example below:</p> <div class="example"><h3>Expression Example</h3><pre class="prettyprint lang-config"><Location "/"> AddOutputFilterByType SUBSTITUTE text/html @@ -132,7 +132,12 @@ </Location></pre> </div> - + <div class="warning"><h3>Expressions and caching</h3> + <p>Caution must be exercised when performing substitutions that reference + HTTP request headers. Because this module operates after response headers + have been sent, the <a href="../expr.html">expression parser</a> cannot add + referenced HTTP request headers to the outgoing Vary header. </p> + </div> <p>A common use scenario for <code>mod_substitute</code> is the situation in which a front-end server proxies requests to a back-end |