prototype.diff - Redmine

         if options[:formatting] == false
           text = h(text)
         else
           formatting = Setting.text_formatting
           formatting = Setting.text_formatting_for(project)
           text = Redmine::WikiFormatting.to_html(formatting, text, :object => obj, :attribute => attr)
         end
-...
       private
       def wiki_helper
         helper = Redmine::WikiFormatting.helper_for(Setting.text_formatting)
         helper = Redmine::WikiFormatting.helper_for(Setting.text_formatting_for(@project))
         extend helper
         return self
       end

             check_box_tag("settings[#{setting}]", 1, setting_value(setting).to_s != '0', options).html_safe
       end
       def setting_date_field(setting, options={})
         setting_label(setting, options).html_safe +
           date_field_tag("settings[#{setting}]", setting_value(setting), options).html_safe
       end
       def setting_label(setting, options={})
         label = options.delete(:label)
         if label == false

+        a
       end
       def self.text_formatting_for(project)
         cutoff = Setting.use_textile_before_date.to_date rescue nil
         default_text_formatting = Setting.default_text_formatting
         return default_text_formatting if project.nil? || cutoff.blank? || default_text_formatting == "textile"
         created = project.created_on.utc.to_date
         created < cutoff ? :textile : default_text_formatting
       end
       # Checks if settings have changed since the values were read
       # and clears the cache hash if it's the case
       # Called once per request
-...
       load_available_settings
       load_plugin_settings
       class << self
         alias_method :default_text_formatting, :text_formatting
       end
       private
       def force_utf8_strings(arg)

     <p><%= setting_check_box :cache_formatted_text %></p>
     <p><%= setting_date_field :use_textile_before_date %></p>
     <p><%= setting_select :wiki_compression, [['Gzip', 'gzip']], :blank => :label_none %></p>
     <p><%= setting_text_field :feeds_limit, :size => 6 %></p>

config/locales/en.yml
442	442	setting_plain_text_mail: Plain text mail (no HTML)
443	443	setting_host_name: Host name and path
444	444	setting_text_formatting: Text formatting
	445	setting_use_textile_before_date: "Use Textile for projects created before"
445	446	setting_wiki_compression: Wiki history compression
446	447	setting_feeds_limit: Maximum number of items in Atom feeds
447	448	setting_default_projects_public: New projects are public by default

Redmine