void fmt_date(char *buf, size_t n, time_t thetime, int seconds);
int is_msg_in_sequence_set(const char *mset, long msgnum);
const char *memreadline(const char *start, char *buf, int maxlen);
-char *memreadlinelen(char *start, char *buf, int maxlen, int *retlen);
+const char *memreadlinelen(const char *start, char *buf, int maxlen, int *retlen);
#define IsEmptyStr(a) ((a)[0] == '\0')
#define num_parms(source) num_tokens(source,(char)'|')
int stripout(char *str, char leftboundary, char rightboundary);