Exact syntax for lightning-cli txprepare I have tried many different forms but I cannot prepare a transaction with lightning-cli txprepare from the Linux prompt.

lightning-cli txprepare [{\"bc1qvzr0mwps952d0cdmchyd2pe5rlee5tfces5dzf\":\"all\"}] slow 1 [c2ff...:1]
lightning-cli: Incorrect 'id' in response: null

lightning-cli txprepare "[{\"bc1qvzr0mwps952d0cdmchyd2pe5rlee5tfces5dzf\":\"all\"}]" slow 1 "[c2ff...:1]"
lightning-cli: Incorrect 'id' in response: null


and many other trials.

What is the correct syntax?
How is it possible to avoid the double quote issue in the shell?
Is it possible to have an actual example of what SHOULD work?

Thank you.
For readers, this issue has been resolved here.

Note that Gabriele's syntax was correct but that you currently cannot use unconfirmed UTXOs with txprepare [1] ! The documentation has been update accordingly.

[1] This caused lightningd to crash but has been fixed by now.