Where does the redirect from shortlink to permalink happen?

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When requesting short urls they are redirected to their matching permalink, for instances :

shortlink	permalink
/?cat=category_id	/category_base/category_slug
/?p=post_or_page_id	/custom_structure/post_or_page_slug/
/?author=account_id	/author/account_slug

What's the part of the code handling this and is it customizable through hooks ?

When requesting short urls they are redirected to their matching permalink, for instances :

shortlink	permalink
/?cat=category_id	/category_base/category_slug
/?p=post_or_page_id	/custom_structure/post_or_page_slug/
/?author=account_id	/author/account_slug

What's the part of the code handling this and is it customizable through hooks ?

• permalinks
• wp-redirect
• template-redirect
• shortlink

Share Improve this question edited Apr 21, 2024 at 14:47 challet asked Apr 21, 2024 at 13:32 challetchallet 11144 bronze badges

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1 Answer 1

Sorted by: Reset to default 0

That's handled by the redirect_canonical function, set up as a default template_redirect filter.

So it can be customized either by :

• a template_redirect filter, with a priority value lower than 10, so it runs before the redirect_canonical function (which will eventually skip the next filters by making a redirect).
• a redirect_canonical filter called by the function of the same name

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