Merged r11754 from trunk (#12684).

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/branches/2.3-stable@11755 e93f8b46-1217-0410-a6f0-8f06a7374b81

diff --git a/app/helpers/application_helper.rb b/app/helpers/application_helper.rb
index e277196b5dee5429d6b69e28a997a1bb86ba2dd3..8e22376073c7821425d061e5e90d039821a4876a 100644 (file)
--- a/app/helpers/application_helper.rb
+++ b/app/helpers/application_helper.rb
@@ -471,7 +471,11 @@ module ApplicationHelper
   end
 
   def accesskey(s)
-    Redmine::AccessKeys.key_for s
+    @used_accesskeys ||= []
+    key = Redmine::AccessKeys.key_for(s)
+    return nil if @used_accesskeys.include?(key)
+    @used_accesskeys << key
+    key
   end
 
   # Formats text according to system settings.