+bool conf_set_all_new_symbols(enum conf_def_mode mode);
+void set_all_choice_values(struct symbol *csym);
+
+struct conf_printer {
+ void (*print_symbol)(FILE *, struct symbol *, const char *, void *);
+ void (*print_comment)(FILE *, const char *, void *);
+};
+
+/* confdata.c and expr.c */
+static inline void xfwrite(const void *str, size_t len, size_t count, FILE *out)
+{
+ assert(len != 0);