pub const TEXT_FLOW_CONTROL_CHARS: &[char] = &[ '\u{202A}', '\u{202B}', '\u{202D}', '\u{202E}', '\u{2066}', '\u{2067}', '\u{2068}', '\u{202C}', '\u{2069}', ]; #[inline] pub fn contains_text_flow_control_chars(s: &str) -> bool { // Char - UTF-8 // U+202A - E2 80 AA // U+202B - E2 80 AB // U+202C - E2 80 AC // U+202D - E2 80 AD // U+202E - E2 80 AE // U+2066 - E2 81 A6 // U+2067 - E2 81 A7 // U+2068 - E2 81 A8 // U+2069 - E2 81 A9 let mut bytes = s.as_bytes(); loop { match core::slice::memchr::memchr(0xE2, bytes) { Some(idx) => { // bytes are valid UTF-8 -> E2 must be followed by two bytes let ch = &bytes[idx..idx + 3]; match ch { [_, 0x80, 0xAA..=0xAE] | [_, 0x81, 0xA6..=0xA9] => break true, _ => {} } bytes = &bytes[idx + 3..]; } None => { break false; } } } }