{
struct variable *var = vector_get_var (v, (size_t) idx - 1);
return copy_string (e, CHAR_CAST_BUG (char *, case_str (c, var)),
{
struct variable *var = vector_get_var (v, (size_t) idx - 1);
return copy_string (e, CHAR_CAST_BUG (char *, case_str (c, var)),