anchor.diff:              span.help-block #{_input_help_text}
   
   
  -      - _group_class = !!self.errors.nick ? 'error' : ''
  -      - _input_help_text = (_group_class !== '') ? self.errors.nick : self.t('users.auth.reg_form.nick_help')
  +      - _group_class = ('nick' in self.errors) ? 'error' : ''
  +      - _input_help_text = (self.errors.nick) ? self.errors.nick : self.t('users.auth.reg_form.nick_help')
   
         .control-group(class=_group_class)
           label.control-label(for='reg_nick') #{self.t('users.auth.reg_form.nick')}
  
positive.code:             span.help-block #{_input_help_text}
  
  
        - _group_class = !!self.errors.pass ? 'error' : ''
        - _input_help_text = (_group_class !== '') ? self.errors.pass : self.t('users.auth.reg_form.password_help')
  
        .control-group(class=_group_class)
          label.control-label(for='reg_pass') #{self.t('users.auth.reg_form.password')}
  
negative.code:       - var _group_class, _input_help_text
  
  
        - _group_class = ('email' in self.errors) ? 'error' : ''
        - _input_help_text = (self.errors.email) ? self.errors.email : self.t('users.auth.reg_form.email_help')
  
        .control-group(class=_group_class)
          label.control-label(for='reg_eml') #{self.t('users.auth.reg_form.email')}
  