Brown paper bag time: comma_scan() didn't work for anything but the last entry.
diff --git a/lib/getmountlist.c b/lib/getmountlist.c
index 9834722..5f4bc63 100644
--- a/lib/getmountlist.c
+++ b/lib/getmountlist.c
@@ -76,7 +76,7 @@
 
     if (!s) break;
     no = 2*(*s == 'n' && s[1] == 'o');
-    if (optlen == len+no && !strcmp(opt, s+no)) {
+    if (optlen == len-no && !strncmp(opt, s+no, optlen)) {
       got = !no;
       if (clean) memmove(s, optlist, strlen(optlist)+1);
     }