Will specialization of function templates in std for program-defined types no longer be allowed in C++20? Languages

Will specialization of function templates in std for program-defined types no longer be allowed in C++20?

Quote from cppreference.com:Adding template specializationsIt is allowed to add template specializations for any standard library |class (since C++20)| template to the namespace std only if the declaration depends on at least one program-defined type and the specialization satisfies all requirements for the original template, except where such specializations are prohibited.
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