[wp-trac] [WordPress Trac] #41742: New conditional tag to decide if a post has a custom template

[WordPress Trac]

#41742: New conditional tag to decide if a post has a custom template
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 Reporter:  danburzo         |      Owner:
     Type:  feature request  |     Status:  new
 Priority:  normal           |  Milestone:  Awaiting Review
Component:  Themes           |    Version:  trunk
 Severity:  normal           |   Keywords:
  Focuses:  template         |
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 Something like `is_custom_template()`.

 The rationale:

 1. it can be used in `template-loader.php` to aid in clarifying the
 Template Hierarchy for attachments, posts, and pages.
 2. in a theme that wants to keep things DRY and redirects all template-
 xxx.php files to index.php, have a way to enquire if the post has a custom
 template — this unlocks alternative templating strategies (such as when
 using Timber).

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Ticket URL: <https://core.trac.wordpress.org/ticket/41742>
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