extern struct membership *find_channel_membership(struct Channel *, struct Client *);
extern const char *find_channel_status(struct membership *msptr, int combine);
extern struct membership *find_channel_membership(struct Channel *, struct Client *);
extern const char *find_channel_status(struct membership *msptr, int combine);
extern void add_user_to_channel(struct Channel *, struct Client *, int flags);
extern void remove_user_from_channel(struct membership *);
extern void remove_user_from_channels(struct Client *);
extern void add_user_to_channel(struct Channel *, struct Client *, int flags);
extern void remove_user_from_channel(struct membership *);
extern void remove_user_from_channels(struct Client *);