[wp-trac] [WordPress Trac] #50018: Site Health: is_writable() check when there are more than 1 theme directories

[WordPress Trac]

#50018: Site Health: is_writable() check when there are more than 1 theme
directories
-------------------------+-----------------------------
 Reporter:  pbiron       |      Owner:  (none)
     Type:  enhancement  |     Status:  new
 Priority:  normal       |  Milestone:  Awaiting Review
Component:  Site Health  |    Version:
 Severity:  normal       |   Keywords:
  Focuses:               |
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 While working on the patch to #48199, I discovered the existence of
 [https://developer.wordpress.org/reference/functions/register_theme_directory/
 register_theme_directory()].  Using `register_theme_directory()` it seems
 to be possible to have a setup such as:

 * `WP_CONTENT_DIR/parent-themes/some-parent-theme`
 * `WP_CONTENT_DIR/child-themes/current-theme`

 where `current-theme` is a child of `some-parent-theme`.  In such a setup,
 the current behavior (and that in the patch for #48199) actually checks
 whether `WP_CONTENT_DIR/parent-themes` is writable.

 2 questions:

 1. should the `is_writable()` actually be checking whether
 `get_theme_root( get_stylesheet() )` is writable?
 2. should there be additional checks whether **all** registered theme
 directories are writable?

-- 
Ticket URL: <https://core.trac.wordpress.org/ticket/50018>
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