XBT_PUBLIC(char *) xbt_str_join_array(const char *const *strs, const char *sep);
XBT_PUBLIC(void) xbt_str_subst(char *str, char from, char to, int amount);
XBT_PUBLIC(char *) xbt_str_join_array(const char *const *strs, const char *sep);
XBT_PUBLIC(void) xbt_str_subst(char *str, char from, char to, int amount);