cpl_last_error
_err_record_msg(cf->err, cpl_last_error(cpl), END_ERR_MSG);
strncpy(errmsg, cpl_last_error(cpl), maxerr);
waserr = gl_print_info(gl, cpl_last_error(gl->cpl), GL_END_INFO);
waserr = gl_print_info(gl, cpl_last_error(gl->cpl), GL_END_INFO);
const char *cpl_last_error(WordCompletion *cpl);