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AK+LibUnicode: Provide Unicode-aware caseless String matching
The Unicode spec defines much more complicated caseless matching algorithms in its Collation spec. This implements the "basic" case folding comparison.
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@ -49,6 +49,10 @@ public:
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ErrorOr<String> to_lowercase(Optional<StringView> const& locale = {}) const;
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ErrorOr<String> to_uppercase(Optional<StringView> const& locale = {}) const;
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ErrorOr<String> to_titlecase(Optional<StringView> const& locale = {}) const;
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ErrorOr<String> to_casefold() const;
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// Compare this String against another string with caseless matching. Using this method requires linking LibUnicode into your application.
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ErrorOr<bool> equals_ignoring_case(String const&) const;
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// Creates a substring with a deep copy of the specified data window.
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ErrorOr<String> substring_from_byte_offset(size_t start, size_t byte_count) const;
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