int haschar(const char *st, int ch);
void remove_token(char *source, int parmnum, char separator);
void fmt_date(char *buf, size_t n, time_t thetime, int seconds);
-int is_msg_in_sequence_set(char *mset, long msgnum);
+int is_msg_in_sequence_set(const char *mset, long msgnum);
char *memreadline(char *start, char *buf, int maxlen);
char *memreadlinelen(char *start, char *buf, int maxlen, int *retlen);
#define IsEmptyStr(a) ((a)[0] == '\0')
* Determine whether the specified message number is contained within the
* specified sequence set.
*/
-int is_msg_in_sequence_set(char *mset, long msgnum) {
+int is_msg_in_sequence_set(const char *mset, long msgnum) {
int num_sets;
int s;
char setstr[128], lostr[128], histr[128];