covener at apache
Nov 4, 2009, 3:48 PM
Post #1 of 1
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svn commit: r832914 - in /httpd/httpd/trunk/docs/manual/mod: mod_rewrite.html.en mod_rewrite.xml
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Author: covener
Date: Wed Nov 4 23:48:52 2009
New Revision: 832914
URL: http://svn.apache.org/viewvc?rev=832914&view=rev
Log:
add an early note about the Pattern in a rewriterule behaving
counterintuitively in per-directory context. (lots of mysterious no-op
rulesets due to ^/ in htaccess)
Tweak QSA text.
Modified:
httpd/httpd/trunk/docs/manual/mod/mod_rewrite.html.en
httpd/httpd/trunk/docs/manual/mod/mod_rewrite.xml
Modified: httpd/httpd/trunk/docs/manual/mod/mod_rewrite.html.en
URL: http://svn.apache.org/viewvc/httpd/httpd/trunk/docs/manual/mod/mod_rewrite.html.en?rev=832914&r1=832913&r2=832914&view=diff
==============================================================================
--- httpd/httpd/trunk/docs/manual/mod/mod_rewrite.html.en (original)
+++ httpd/httpd/trunk/docs/manual/mod/mod_rewrite.html.en Wed Nov 4 23:48:52 2009
@@ -947,11 +947,23 @@
<div class="note"><h3>What is matched?</h3>
<p>The <em>Pattern</em> will initially be matched against the part of the
- URL after the hostname and port, and before the query string. If you wish
- to match against the hostname, port, or query string, use a
+ URL after the hostname and port, and before the query string.</p>
+
+ <p>When the RewriteRule appears in per-directory (htaccess) context, the
+ <em>Pattern</em> is matched against what remains of the URL after removing
+ the prefix that lead Apache to the current rules (see the
+ <code class="directive"><a href="#rewritebase">RewriteBase</a></code>). The removed prefix
+ always ends with a slash, meaning the matching occurs against a string which
+ never has a leading slash. A <em>Pattern</em> with <code>^/</code> never
+ matches in per-directory context.</p>
+
+ <p>If you wish to match against the hostname, port, or query string, use a
<code class="directive"><a href="#rewritecond">RewriteCond</a></code> with the
<code>%{HTTP_HOST}</code>, <code>%{SERVER_PORT}</code>, or
- <code>%{QUERY_STRING}</code> variables respectively.</p>
+ <code>%{QUERY_STRING}</code> variables respectively. If you wish to
+ match against the full URL-path in a per-directory (htaccess) RewriteRule,
+ use the <code>%{REQUEST_URI}</code> variable.</p>
+
</div>
<p>For some hints on <a class="glossarylink" href="../glossary.html#regex" title="see glossary">regular
@@ -1325,10 +1337,11 @@
<dt>'<code>qsappend|QSA</code>'
(query string
append)</dt><dd>
- This flag forces the rewrite engine to append a query
- string part of the substitution string to the existing string,
+ This flag forces the rewrite engine to append the query
+ string part of the substitution string to the existing query string,
instead of replacing it. Use this when you want to add more
- data to the query string via a rewrite rule.</dd>
+ data to the query string via a rewrite rule. This rule has no net effect
+ unless your substitution explicitly provides a new query string.</dd>
<dt>'<code>redirect|R</code>
[=<em>code</em>]' (force <a id="redirect" name="redirect">redirect</a>)</dt><dd>
Modified: httpd/httpd/trunk/docs/manual/mod/mod_rewrite.xml
URL: http://svn.apache.org/viewvc/httpd/httpd/trunk/docs/manual/mod/mod_rewrite.xml?rev=832914&r1=832913&r2=832914&view=diff
==============================================================================
--- httpd/httpd/trunk/docs/manual/mod/mod_rewrite.xml (original)
+++ httpd/httpd/trunk/docs/manual/mod/mod_rewrite.xml Wed Nov 4 23:48:52 2009
@@ -959,11 +959,23 @@
<note><title>What is matched?</title>
<p>The <em>Pattern</em> will initially be matched against the part of the
- URL after the hostname and port, and before the query string. If you wish
- to match against the hostname, port, or query string, use a
+ URL after the hostname and port, and before the query string.</p>
+
+ <p>When the RewriteRule appears in per-directory (htaccess) context, the
+ <em>Pattern</em> is matched against what remains of the URL after removing
+ the prefix that lead Apache to the current rules (see the
+ <directive module="mod_rewrite">RewriteBase</directive>). The removed prefix
+ always ends with a slash, meaning the matching occurs against a string which
+ never has a leading slash. A <em>Pattern</em> with <code>^/</code> never
+ matches in per-directory context.</p>
+
+ <p>If you wish to match against the hostname, port, or query string, use a
<directive module="mod_rewrite">RewriteCond</directive> with the
<code>%{HTTP_HOST}</code>, <code>%{SERVER_PORT}</code>, or
- <code>%{QUERY_STRING}</code> variables respectively.</p>
+ <code>%{QUERY_STRING}</code> variables respectively. If you wish to
+ match against the full URL-path in a per-directory (htaccess) RewriteRule,
+ use the <code>%{REQUEST_URI}</code> variable.</p>
+
</note>
<p>For some hints on <glossary ref="regex">regular
@@ -1342,10 +1354,11 @@
<dt>'<code>qsappend|QSA</code>'
(query string
append)</dt><dd>
- This flag forces the rewrite engine to append a query
- string part of the substitution string to the existing string,
+ This flag forces the rewrite engine to append the query
+ string part of the substitution string to the existing query string,
instead of replacing it. Use this when you want to add more
- data to the query string via a rewrite rule.</dd>
+ data to the query string via a rewrite rule. This rule has no net effect
+ unless your substitution explicitly provides a new query string.</dd>
<dt>'<code>redirect|R</code>
[=<em>code</em>]' (force <a id="redirect"
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