old_contents: from flask import url_for
  from wtforms.fields import Field
  from wtforms.widgets import HiddenInput
  from wtforms.compat import text_type
  
  
  def register_template_utils(app):
      """Register Jinja 2 helpers (called from __init__.py)."""
  
      @app.template_test()
      def equalto(value, other):
          return value == other
  
      @app.template_global()
      def is_hidden_field(field):
          from wtforms.fields import HiddenField
          return isinstance(field, HiddenField)
  
      app.add_template_global(index_for_role)
  
  
  def index_for_role(role):
      return url_for(role.index)
  
  
  class CustomSelectField(Field):
      widget = HiddenInput()
  
      def __init__(self, label='', validators=None, multiple=False, 
                   choices=[], allow_custom=True, **kwargs):
          super(CustomSelectField, self).__init__(label, validators, **kwargs)
          self.multiple = multiple
          self.choices = choices
          self.allow_custom = allow_custom
  
      def _value(self):
          return text_type(self.data) if self.data is not None else ''
  
      def process_formdata(self, valuelist):
          if valuelist:
              self.data = valuelist[1]
              self.raw_data = [valuelist[1]]
          else:
              self.data = ''
  
new_contents: from flask import url_for
  from wtforms.fields import Field
  from wtforms.widgets import HiddenInput
  from wtforms.compat import text_type
  
  
  def register_template_utils(app):
      """Register Jinja 2 helpers (called from __init__.py)."""
  
      @app.template_test()
      def equalto(value, other):
          return value == other
  
      @app.template_global()
      def is_hidden_field(field):
          from wtforms.fields import HiddenField
          return isinstance(field, HiddenField)
  
      app.add_template_global(index_for_role)
  
  
  def index_for_role(role):
      return url_for(role.index)
  
  
  class CustomSelectField(Field):
      widget = HiddenInput()
  
      def __init__(self, label='', validators=None, multiple=False,
                   choices=[], allow_custom=True, **kwargs):
          super(CustomSelectField, self).__init__(label, validators, **kwargs)
          self.multiple = multiple
          self.choices = choices
          self.allow_custom = allow_custom
  
      def _value(self):
          return text_type(self.data) if self.data is not None else ''
  
      def process_formdata(self, valuelist):
          if valuelist:
              self.data = valuelist[1]
              self.raw_data = [valuelist[1]]
          else:
              self.data = ''
  
subject: remove trailing whitespace