Add a compatibility note for the 'ldap' function.

[skip ci]

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1898219 13f79535-47bb-0310-9956-ffa450edef68

diff --git a/docs/manual/expr.xml b/docs/manual/expr.xml
index 8c11c96ccea5f4cb8eccc8483ab291d04f007db3..450ee0eb394ec627bc4b0a71fdef61954da76e5e 100644 (file)
--- a/docs/manual/expr.xml
+++ b/docs/manual/expr.xml
@@ -599,7 +599,8 @@ DIGIT       ::= <any US-ASCII digit "0".."9">
             regular file)</td><td>restricted</td></tr>
     <tr><td><code>ldap</code></td>
         <td>Escape characters as required by LDAP distinguished name escaping
-            (RFC4514) and LDAP filter escaping (RFC4515).</td><td></td></tr>
+            (RFC4514) and LDAP filter escaping (RFC4515).<br />
+            (Available in httpd 2.4.53 and later)</td><td></td></tr>
     <tr><td><code>replace</code></td>
         <td>replace(string, "from", "to") replaces all occurrences of "from"
             in the string with "to". The first parameter must not be a literal string.