Function is_digit

crates/sre_engine/src/string.rs:353–357

(ch: u32)

}
#[inline]
pub(crate) fn is_digit(ch: u32) -> bool {
    u8::try_from(ch)
        .map(|x| x.is_ascii_digit())
        .unwrap_or(false)
}
#[inline]
pub(crate) fn is_loc_alnum(ch: u32) -> bool {
    // FIXME: Ignore the locales