Annex D (normative) Compatibility features [depr]

D.20 Deprecated locale category facets [depr.locale.category]

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The ctype locale category includes the following facets as if they were specified in table Table 107 of [locale.category].
codecvt<char16_t, char, mbstate_t> codecvt<char32_t, char, mbstate_t> codecvt<char16_t, char8_t, mbstate_t> codecvt<char32_t, char8_t, mbstate_t>
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The ctype locale category includes the following facets as if they were specified in table Table 108 of [locale.category].
codecvt_byname<char16_t, char, mbstate_t> codecvt_byname<char32_t, char, mbstate_t> codecvt_byname<char16_t, char8_t, mbstate_t> codecvt_byname<char32_t, char8_t, mbstate_t>
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The following class template specializations are required in addition to those specified in [locale.codecvt].
The specializations codecvt<char16_t, char, mbstate_t> and codecvt<char16_t, char8_t, mbstate_t> convert between the UTF-16 and UTF-8 encoding forms, and the specializations codecvt<char32_t, char, mbstate_t> and codecvt<char32_t, char8_t, mbstate_t> convert between the UTF-32 and UTF-8 encoding forms.