You can clone with
HTTPS or Subversion.
Since I know blpop is there even if it is documented, I can't tell if the support is already there for this feature, but I haven't been able to eke out if it is. But something like this would be handy:
$redis->blpop("list1", "list2", 1);
at least in 1.975
Thus I propose closing this issue.
Yes, there is support of multiple keys in single BLPOP command. Thank you.