Redmine

  # Login must contain letters, numbers, underscores only

  validates_format_of :login, :with => /\A[a-z0-9_\-@\.]*\z/i

  validates_length_of :login, :maximum => LOGIN_LENGTH_LIMIT

  validates_inclusion_of :mail_notification, :in => MAIL_NOTIFICATION_OPTIONS.collect(&:first), :allow_blank => true

  Setting::PASSWORD_CHAR_CLASSES.each do |k, v|

    validates_format_of :password, :with => v, :message => :"must_contain_#{k}", :allow_blank => true, :if => Proc.new {Setting.password_required_char_classes.include?(k)}