Document limitation to ProxyPassMatch directive.

This is a valid bug report PR 46665, which I'm marking as WONTFIX
but which needs documenting for what it is.

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@808321 13f79535-47bb-0310-9956-ffa450edef68

diff --git a/docs/manual/mod/mod_proxy.xml b/docs/manual/mod/mod_proxy.xml
index 082e1fa04b170e102400cf2788ac13dd6cb6c350..371e2a5ca4240f84f15c5927d69b4c1b6b36e3e8 100644 (file)
--- a/docs/manual/mod/mod_proxy.xml
+++ b/docs/manual/mod/mod_proxy.xml
@@ -958,7 +958,12 @@ expressions</description>
     <p>will cause a local request for
     <code>http://example.com/foo/bar.gif</code> to be internally converted
     into a proxy request to <code>http://backend.example.com/foo/bar.gif</code>.</p>
-
+    <note><title>Note</title>
+      The URL argument must be parsable as a URL <em>before</em> regexp
+      substitutions (as well as after).  This limits the matches you can use.
+      See <a href="https://issues.apache.org/bugzilla/show_bug.cgi">PR 46665</a>
+      for details and workaround ideas.
+    </note>
     <p>The <code>!</code> directive is useful in situations where you don't want
     to reverse-proxy a subdirectory.</p>
 </usage>