Function is_http_header_value

modules/llrt_fetch/src/headers.rs:678–686

(value: &str)

    })
}

fn normalize_header_value_inplace(ctx: &Ctx<'_>, text: &mut String) -> Result<()> {
    let mut input = std::mem::take(text).into_bytes();
    let mut read_idx = 0;
    let mut write_idx = 0;

    // Skip leading SP or HTAB
    while read_idx < input.len() && (input[read_idx] == b' ' || input[read_idx] == b'\t') {
        read_idx += 1;
    }

    // Store the last whitespace byte if any (space or tab)