pub unsafe extern "C" fn git_patch_from_buffers( out: *mut *mut git_patch, old_buffer: *const c_void, old_len: size_t, old_as_path: *const c_char, new_buffer: *const c_void, new_len: size_t, new_as_path: *const c_char, opts: *const git_diff_options) -> c_int