Resolves bz66405:

Clarifies that IgnoreIndex is not equivalent to a unix glob-style
matching.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1932828 13f79535-47bb-0310-9956-ffa450edef68

Author: rbowen

docs/manual/mod/mod_autoindex.xml

@@ -517,16 +517,36 @@ a directory</description>
 <usage>
     <p>The <directive>IndexIgnore</directive> directive adds to the
     list of files to hide when listing a directory. <var>File</var> is a
-    shell-style wildcard expression or full
-    filename. Multiple IndexIgnore directives add
-    to the list, rather than replacing the list of ignored
-    files. By default, the list contains <code>.</code> (the current
-    directory).</p>
+    filename or pattern which may contain the <code>?</code> and
+    <code>*</code> wildcard characters. <code>?</code> matches any
+    single character, and <code>*</code> matches any sequence of
+    characters, including an empty sequence. Multiple IndexIgnore
+    directives add to the list, rather than replacing the list of
+    ignored files. By default, the list contains <code>.</code> (the
+    current directory).</p>
 
     <highlight language="config">
       IndexIgnore .??* *~ *# HEADER* README* RCS CVS *,v *,t
     </highlight>
 
+    <p>If <var>File</var> contains a <code>/</code> character, only
+    the portion after the last <code>/</code> is used for matching
+    against filenames. For example, <code>*/.??*</code> is equivalent
+    to <code>.??*</code>.</p>
+
+    <note><title>Differences from shell wildcard patterns</title>
+      <p>The wildcard matching used here is <em>not</em> the same as
+      shell-style (glob) filename pattern matching. In particular:</p>
+      <ul>
+        <li>Bracket expressions such as <code>[abc]</code> or
+        <code>[!.]</code> are not supported; they are treated as
+        literal characters.</li>
+        <li>A leading <code>.</code> in a filename is not treated
+        specially. For example, <code>*~</code> will match
+        <code>.example~</code>, whereas a shell glob would not.</li>
+      </ul>
+    </note>
+
     <note><title>Regular Expressions</title>
       <p>This directive does not currently work in configuration sections
       that have regular expression arguments, such as  <directive