That line is generated by the workaround

[...]

This is the bug, it forgot to split on \0, because Vars joins on \0

Oh, I see what you mean. Hm. I hate that NUL stuff...

I guess the best thing would be to add a config'able (probably on by default) splitting on them to the processing. I like that better than expecting a ->param, since that breaks it away from the contract of purely hash->hash.

I'll see if I can't get that into a new release in the next few weeks. Annoyingly busy... :|