+mx_t* compress_reg_mx (void) {
+ mx_t* fmt = safe_calloc (1, sizeof (mx_t));
+ fmt->type = M_COMPRESSED;
+ fmt->local = 1;
+ fmt->mx_is_magic = mbox_is_magic;
+ fmt->mx_check_empty = mbox_check_empty;
+ fmt->mx_access = access;
+ fmt->mx_open_mailbox = mutt_open_read_compressed;
+ return (fmt);
+}
+