int showfile(char **, char *);
int smatch(char *, struct swit *);
char *snprintb(char *, size_t, unsigned, char *);
-int ssequal(char *, char *);
+int isprefix(char *, char *);
int stringdex(char *, char *);
char *trimcpy(unsigned char *);
int unputenv(char *);