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//! Rules defined in [RFC 2234].
//!
//! [RFC 2234]: https://datatracker.ietf.org/doc/html/rfc2234

use crate::parsing::ParsedItem;

/// Consume exactly one space or tab.
pub(crate) const fn wsp(input: &[u8]) -> Option<ParsedItem<'_, ()>> {
    match input {
        [b' ' | b'\t', rest @ ..] => Some(ParsedItem(rest, ())),
        _ => None,
    }
}