rb_linebuf_putmsg(&rb_linebuf_id, NULL, NULL, ":%s %s", use_id(source_p), buf);
RB_DLINK_FOREACH_SAFE(ptr, next_ptr, chptr->members.head)
rb_linebuf_putmsg(&rb_linebuf_id, NULL, NULL, ":%s %s", use_id(source_p), buf);
RB_DLINK_FOREACH_SAFE(ptr, next_ptr, chptr->members.head)