Function onig_sys::onig_get_callout_data_by_tag

pub unsafe extern "C" fn onig_get_callout_data_by_tag(
    reg: OnigRegex,
    mp: *mut OnigMatchParam,
    tag: *const OnigUChar,
    tag_end: *const OnigUChar,
    slot: c_int,
    type_: *mut OnigType,
    val: *mut OnigValue
) -> c_int