return_state_to_var_sym
char *return_state_to_var_sym(struct expression *expr, int param, const char *key, struct symbol **sym);
name = return_state_to_var_sym(expr, param, key, &sym);
name = return_state_to_var_sym(expr, param, key, &sym);
name = return_state_to_var_sym(expr, param, key, &sym);
name = return_state_to_var_sym(expr, param, key, &sym);