Cover regex API changes for module developers, and mention support

for external PCRE.

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@290931 13f79535-47bb-0310-9956-ffa450edef68

diff --git a/docs/manual/new_features_2_2.xml b/docs/manual/new_features_2_2.xml
index 9e1516595662f7981359fdd61d0b4289b00a1fc8..f433c9cbc24b3b46034c9111ee142ceb79244edb 100644 (file)
--- a/docs/manual/new_features_2_2.xml
+++ b/docs/manual/new_features_2_2.xml
@@ -69,7 +69,9 @@
       <dt>Regular Expression Library Updated</dt>
       <dd>Version 5.0 of the 
           <a href="http://www.pcre.org/">Perl Compatible Regular Expression
-          Library</a> (PCRE) is now included.</dd>
+          Library</a> (PCRE) is now included.  <program>httpd</program> can be
+          configured to use a system installation of PCRE by passing the
+          <code>--with-pcre</code> flag to configure.</dd>
 
       <dt>Smart Filtering</dt>
       <dd><module>mod_filter</module> introduces dynamic configuration
@@ -176,6 +178,17 @@
       <dt>Monitor hook added</dt>
       <dd>Monitor hook enables modules to run regular/scheduled jobs
           in the parent (root) process.</dd>
+          
+      <dt>Regular expression API changes</dt>
+
+      <dd>The <code>pcreposix.h</code> header is no longer available;
+      it is replaced by the new <code>ap_regex.h</code> header.  The
+      POSIX.2 <code>regex.h</code> implementation exposed by the old
+      header is now available under the <code>ap_</code> namespace
+      from <code>ap_regex.h</code>.  Calls to <code>regcomp</code>, 
+      <code>regexec</code> and so on can be replaced by calls to
+      <code>ap_regcomp</code>, <code>ap_regcomp</code>.</dd>
+
     </dl>
   </section>
 </manualpage>