From: Christophe Jaillet <jailletc36@apache.org>
Date: Sat, 14 Nov 2020 08:40:17 +0000 (+0000)
Subject: Explain limitation of UnDefine syntax as already noted in Define.
X-Git-Tag: 2.5.0-alpha2-ci-test-only~1148
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fa34dffe636bb72843ed45cde878806de4dfe627;p=thirdparty%2Fapache%2Fhttpd.git

Explain limitation of UnDefine syntax as already noted in Define.
Increase visibility of a warning, to be consistent with Define

PR 64909

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1883417 13f79535-47bb-0310-9956-ffa450edef68
---

diff --git a/docs/manual/mod/core.xml b/docs/manual/mod/core.xml
index e256f2a97a6..5d259d190f8 100644
--- a/docs/manual/mod/core.xml
+++ b/docs/manual/mod/core.xml
@@ -4933,9 +4933,15 @@ certain events before failing a request</description>
     <p>This directive can be used to toggle the use of <directive module="core"
     type="section">IfDefine</directive> sections without needing to alter
     <code>-D</code> arguments in any startup scripts.</p>
-    <p>While this directive is supported in virtual host context,
-       the changes it makes are visible to any later configuration
-       directives, beyond any enclosing virtual host.</p>
+
+    <p>Variable names may not contain colon ":" characters, to avoid clashes
+    with <directive module="mod_rewrite">RewriteMap</directive>'s syntax.</p>
+
+    <note><title>Virtual Host scope and pitfalls</title>
+      <p>While this directive is supported in virtual host context,
+         the changes it makes are visible to any later configuration
+         directives, beyond any enclosing virtual host.</p>
+    </note>
 </usage>
 <seealso><directive module="core">Define</directive></seealso>
 <seealso><directive module="core">IfDefine</directive></seealso>