By davidhernandez on
Change record status: 
Published (View all published change records)
Project: 
Drupal core
Introduced in branch: 
8.x
Issue links: 
https://www.drupal.org/node/2370147
Description: 

The is_front variable was part of template_preprocess(), during creation of the default set of variables like is_admin, logged_in, title_prefix, etc. is_front being part of the processing of every template file can cause per-page caching for every template. For that performance reason, it has been moved to template_preprocess_page().

As a consequence of the move, the is_front variable will no longer be available to all templates. It will be available to page-level templates.

Impacts: 
Module developers
Themers
Updates Done (doc team, etc.)
Online documentation: 
Not done
Theming guide: 
Not done
Module developer documentation: 
Not done
Examples project: 
Not done
Coder Review: 
Not done
Coder Upgrade: 
Not done
Other: 
Other updates done