Wow! This is a truly brilliant obfu.

It completely put me on the wrong track when I tried to understand it.

What first took my attention was the readpipe *CX statement. I couldn't see how it could give anything useful as *CX is clearly an invalid command.

So as *CX is invalid, this command would return an empty list. I have removed readpipe *CX from the code, and indeed, it didn't change anything.