Change record status: 
Project: 
Introduced in branch: 
9.1.x
Introduced in version: 
9.1.0-alpha1
Description: 

The handles in tabledrag were previously hard coded, and are now provided by the tableDragHandle() theme function.

For example, it would be possible to add a data-drupal-selector attribute to the tabledrag handle by overriding the theme function like this:

     Drupal.theme.tableDragHandle = () =>  {
	return `<a href="#" data-drupal-selector="added-in-override"
	class="tabledrag-handle"><div class="handle">&nbsp;</div></a>`;
		},
Impacts: 
Module developers
Themers