custr_append_printf
if (custr_append_printf(cs, "%u", elements[i]) != 0) {
(void) custr_append_printf(cus, "%u", point->dop_port);
return (custr_append_printf(cus, "%c", newc));
return (custr_append_printf(cus, "%s", name));
int custr_append_printf(custr_t *, const char *, ...);
if (custr_append_printf(st->rs_demangled, "%.*s",
if (custr_append_printf(str, "\\%02hhX", c) != 0)