int is_from (const char *, char *, ssize_t, time_t *);
-const char *mutt_charset_hook (const char *);
-const char *mutt_iconv_hook (const char *);
-
ssize_t _mutt_expand_path(char *, ssize_t, const char *, int);
#define mutt_expand_path(s, n) _mutt_expand_path((s), (n), (s), 0)