[FIXED HUDSON-2026] in 1.340 by applying the patch.

For the longest time I've been meaning to do the fact checking on where the relevant standards are in terms of the encoding used in %HH. I just can't believe UTF-8 is not the default.

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@24880 71c3de6d-444a-0410-be80-ed276b4c234a

core/src/main/java/hudson/security/HudsonPrivateSecurityRealm.java

@@ -219,6 +219,8 @@ public class HudsonPrivateSecurityRealm extends SecurityRealm implements ModelOb
      *      a valid {@link User} object if the user creation was successful.
      */
     private User createAccount(StaplerRequest req, StaplerResponse rsp, boolean selfRegistration, String formView) throws ServletException, IOException {
+        req.setCharacterEncoding("UTF-8");
+
         // form field validation
         // this pattern needs to be generalized and moved to stapler
         SignupInfo si = new SignupInfo();