✨ Add BLMPOP

[JerrodCarpenter]

• Adding BLMPOP
• Adding support for Redis 7.0 commands #1187

➜  redis-rb git:(BLMPOP) ./bin/console 
irb(main):001:0> redis = Redis.new(url: "redis://localhost:6379/2")
=> #<Redis client v5.0.6 for redis://localhost:6379/2>
irb(main):002:0> redis.rpush("list", [6, 1, 2, 3, 4, 5, 6])
=> 9
irb(main):003:0> redis.lmpop(1, "list")
=> ["list", ["4"]]
irb(main):004:0> redis.blmpop(1, "list")
=> ["list", ["3"]]
irb(main):005:0> redis.blmpop(1, "list", modifier: "RIGHT")
=> ["list", ["6"]]
irb(main):006:0> redis.lmpop(1, "list1", "list", modifier: "RIGHT", count: 2)
=> ["list", ["5", "4"]]
irb(main):007:0> redis.blmpop(1, "list1", "list", modifier: "RIGHT", count: 2)
=> ["list", ["3", "2"]]

[normelton]

Is this really the correct implementation of BLMPOP? The Redis command should block until one of the requested lists has an element. But this implementation calls LMPOP (which will immediately return nothing), and sets a timeout around it. I keep getting an empty list, without any blocking.

[byroot]

#1310

[normelton]

Ahh thank you!!