LMOVE, BLMOVE return incorrect response

[varunchopra]

Version:
redis-py: 4.0.2
Redis server: 6.2.3 (enterprise)

Platform:
3.8.10, Ubuntu 20

Description:
According to the docs and the latest redis CLI, LMOVE and BLMOVE must return the value of the key that is being moved.

To repro:

> lmove x x LEFT RIGHT
"abc"

> blmove x x LEFT RIGHT 1
"abc"

However, these return bool on redis-py:

>>> r.lmove('x', 'x')
True

>>> r.blmove('x', 'x', timeout=1)
True

I believe these were erroneously added in RESPONSE_CALLBACKS in #1504 and the fix is to remove this.

@chayim Please let me know if I'm correct and I can create a PR as well.

[chayim]

@varunchopra Thank you! By all means, I'd love to see that :). At the same time, please notice that BLMOVE returns a Bulk string or a Null reply whereas LMOVE returns a bulk string.

Since you kindly offered, I assigned this to you.

[varunchopra]

At the same time, please notice that BLMOVE returns a Bulk string or a Null reply whereas LMOVE returns a bulk string.

I'm sorry I don't understand. Isn't the behavior already correct once the bool conversion is removed?

I've looked at similar implementations and it seems to be alright. Will send a PR.

[chayim]

@varunchopra Apologies, apparently I wasn't clear. You are correct. That removal ought solve this issue.