principal-destruct? decomposition fails for contract names starting with u<number>

[csgui]

It is possible to generate a contract principal using

(principal-construct? 0x15 0x5fe781ad4656928d3f52419118cdd229d0e75566 "u7E0cd1")

However, decomposing the generated principal into its components is not possible.

(principal-destruct? 'SN1FYF0DD8SB9539ZA90S266DT8MX1STNCSV9F6Z0.u7E0cd1)

The issue occurs when the contract principal name starts with a u<number>. It seems that the name is being parsed as an uint.

[obycode]

This is unfortunate. Clarity does not support that contract name, but it seems that the blockchain does, so you can deploy a contract with a name like that and you can call it directly, but you cannot call it from Clarity. This will have to be fixed in a future version of Clarity (or a future epoch).

[csgui]

Well, at least is an issue with Clarity. The lesser of two evils... Thanks @obycode !