[wp-trac] [WordPress Trac] #40820: Child theme should appear as broken if parent is itself

[WordPress Trac]

#40820: Child theme should appear as broken if parent is itself
--------------------------+-----------------------------
 Reporter:  davilera      |      Owner:
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  Themes        |    Version:  4.7.5
 Severity:  normal        |   Keywords:
  Focuses:  template      |
--------------------------+-----------------------------
 Child themes are defined as such if they include the `Template` header in
 `style.css`. In general, if the parent template can't be found, WordPress
 reports the theme as ''Broken'' and tells the user to install the missing
 parent theme.

 However, if the `Template` header is the theme itself, no errors are
 reported (WordPress can find the "parent" theme, because it's itself). The
 resulting behavior is weird and unexpected:

 * If there are other themes available, WordPress uses one as the parent
 theme (I don't know which criteria is used for selecting one or the
 other).
 * If there aren't, the front-end is completely blank (but this might
 depend on the amount of code included in the child theme).

 Such an (invalid) child theme should be reported as ''Broken''. For
 instance, the following message could be shown: ''The theme defines itself
 as its parent theme. Please fix the "Template" header.''

--
Ticket URL: <https://core.trac.wordpress.org/ticket/40820>
WordPress Trac <https://core.trac.wordpress.org/>
WordPress publishing platform