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apply_filters( 'the_category_list', WP_Term[] $categories, int|bool $post_id )

Filters the categories before building the category list.

$categories: (WP_Term[]) An array of the post's categories.
$post_id: (int|bool) ID of the post we're retrieving categories for. When false, we assume the current post in the loop.

Used By	Description
wp-includes/category-template.php: get_the_category_list()	Retrieves category list for a post in either HTML list or custom format.

Version	Description
4.4.0	Introduced.

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Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/hooks/the_category_list