extern int add_string (char ***argv, int *size, int *alloc, const char *str);
extern int count_strings (char **argv);
+extern void sort_strings (char **argv, int len);
extern void free_strings (char **argv);
+extern void free_stringslen (char **argv, int len);
extern int command (char **stdoutput, char **stderror, const char *name, ...);