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    #![unstable(feature = "unicode_internals", issue = "0")]
    #![allow(missing_docs)]

    mod bool_trie;
    pub(crate) mod printable;
    pub(crate) mod tables;
    pub(crate) mod version;

    // For use in liballoc, not re-exported in libstd.
    pub mod derived_property {
        pub use unicode::tables::derived_property::{Case_Ignorable, Cased};
    }
    pub mod conversions {
        pub use unicode::tables::conversions::{to_lower, to_upper};
    }

    // For use in libsyntax
    pub mod property {
        pub use unicode::tables::property::Pattern_White_Space;
    }

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