Function onig_sys::onig_set_callout_data_by_tag

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