char *concat(char *, ...);
int context_del(char *);
char *context_find(char *);
-int context_foil(char *);
void context_read(void);
void context_replace(char *, char *);
void context_save(void);
char *m_mktemp2(const char *, const char *, int *, FILE **);
void thisisanmbox(FILE *);
int makedir(char *);
-char *nmh_getpass(const char *);
char *norm_charmap(char *);
char *new_fs(char *, char *);
int pidwait(pid_t, int);