[wp-trac] [WordPress Trac] #43517: Adding support of default category term for custom taxonomies

[WordPress Trac]

#43517: Adding support of default category term for custom taxonomies
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 Reporter:  enrico.sorcinelli         |       Owner:  whyisjake
     Type:  defect (bug)              |      Status:  reopened
 Priority:  normal                    |   Milestone:  5.5
Component:  Taxonomy                  |     Version:
 Severity:  normal                    |  Resolution:
 Keywords:  dev-feedback needs-patch  |     Focuses:
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Comment (by enrico.sorcinelli):

 The `term_exists` call is made only for custom taxonomies for which has
 been defined a default_term (and the default value in null).
 However `term_exists()` doesn't cache results anyway and adding it could
 be an interesting new functionality.

 Moreover I'd like to add some missing features like:

 - remove `default_taxonomy_{$taxonomy}` option on `unregister_taxonomy`
 - check and prevent to delete the default term for custom taxonomies like
 'wp_delete_term()` does for category taxonomy.

 So I refreshed the patch by updating also `default_term` parameter
 documentation (I leaved `string|array` type).

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Ticket URL: <https://core.trac.wordpress.org/ticket/43517#comment:28>
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