Add note wrt case issues on Windows. (PR 6694)

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@272419 13f79535-47bb-0310-9956-ffa450edef68

docs/manual/CoreTasks/copy.html

@@ -158,12 +158,21 @@ in all files.</b></p>
 </pre>
 
 <p><strong>Unix Note:</strong> File permissions are not retained when files
-are copied; they end up with the default UMASK permissions instead. This
+are copied; they end up with the default <code>UMASK</code> permissions
+instead. This
 is caused by the lack of any means to query or set file permissions in the
 current Java runtimes. If you need a permission-preserving copy function,
-use &lt;exec executable="cp" ... &gt; instead. 
+use <code>&lt;exec executable="cp" ... &gt;</code> instead. 
+</p>
 
-<hr><p align="center">Copyright &copy; 2001,2002 Apache Software Foundation.
+<p><strong>Windows Note:</strong> If you copy a file to a directory
+where that file already exists, but with different casing,
+the copied file takes on the case of the original. The workaround is to
+<a href="delete.html">delete</a>
+the file in the destination directory before you copy it.
+</p>
+
+<hr><p align="center">Copyright &copy; 2001-2002 Apache Software Foundation.
 All rights Reserved.</p>
 
 </body>