Function is_word_byte

regex/regex-syntax/src/lib.rs:193–198

Returns true if and only if the given character is an ASCII word character. An ASCII word character is defined by the following character class: `[_0-9a-zA-Z]'.

(c: u8)

/// An ASCII word character is defined by the following character class:
/// `[_0-9a-zA-Z]'.
pub fn is_word_byte(c: u8) -> bool {
    match c {
        b'_' | b'0' ... b'9' | b'a' ... b'z' | b'A' ... b'Z'  => true,
        _ => false,
    }
}

#[cfg(test)]
mod tests {