Crypt the text in the undo file if the file itself is crypted.
diff --git a/runtime/compiler/perl.vim b/runtime/compiler/perl.vim
index 2b7c94a..583c6c3 100644
--- a/runtime/compiler/perl.vim
+++ b/runtime/compiler/perl.vim
@@ -1,6 +1,6 @@
 " Vim Compiler File
 " Compiler:     Perl syntax checks (perl -Wc)
-" Maintainer:   Christian J. Robinson <infynity@onewest.net>
+" Maintainer:   Christian J. Robinson <heptite@gmail.com>
 " Last Change:  2006 Aug 13
 
 if exists("current_compiler")