Fixed: Deselecting textile text formatting causes interning empty string errors (#4867).

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@3446 e93f8b46-1217-0410-a6f0-8f06a7374b81

lib/redmine/wiki_formatting.rb

@@ -25,17 +25,17 @@ module Redmine
       end
       
       def register(name, formatter, helper)
-        raise ArgumentError, "format name '#{name}' is already taken" if @@formatters[name.to_sym]
-        @@formatters[name.to_sym] = {:formatter => formatter, :helper => helper}
+        raise ArgumentError, "format name '#{name}' is already taken" if @@formatters[name.to_s]
+        @@formatters[name.to_s] = {:formatter => formatter, :helper => helper}
       end
       
       def formatter_for(name)
-        entry = @@formatters[name.to_sym]
+        entry = @@formatters[name.to_s]
         (entry && entry[:formatter]) || Redmine::WikiFormatting::NullFormatter::Formatter
       end
       
       def helper_for(name)
-        entry = @@formatters[name.to_sym]
+        entry = @@formatters[name.to_s]
         (entry && entry[:helper]) || Redmine::WikiFormatting::NullFormatter::Helper
       end