rustc_unicode::tables::property::White_Space_table

pub const White_Space_table: &'static [(char, char)] = &[
        ('\u{9}', '\u{d}'), ('\u{20}', '\u{20}'), ('\u{85}', '\u{85}'), ('\u{a0}', '\u{a0}'),
        ('\u{1680}', '\u{1680}'), ('\u{2000}', '\u{200a}'), ('\u{2028}', '\u{2029}'), ('\u{202f}',
        '\u{202f}'), ('\u{205f}', '\u{205f}'), ('\u{3000}', '\u{3000}')
    ]

Unstable (unicode #27783)