pub unsafe extern "C" fn onig_set_callout_user_data_of_match_param(
param: *mut OnigMatchParam,
user_data: *mut c_void
) -> c_int
pub unsafe extern "C" fn onig_set_callout_user_data_of_match_param(
param: *mut OnigMatchParam,
user_data: *mut c_void
) -> c_int