pub type TwigLanguageFn = unsafe extern "C" fn(user_data: *mut c_void, row: *const u8, row_len: usize, input: *const u8, input_len: usize, out: *mut *mut u8, out_len: *mut usize) -> c_int;Expand description
A version-1 language function: input in, as TwigLanguageCall’s.