[split] Verbose cipher?

[Koen G]

I think that treating space as a character is anachronistic.  

What do you mean by this, Marco? Does it also mean that they were unlikely to introduce extra spaces?

It feels to me like keeping space as a character in entropy calculations is a way to include word boundaries. E.g. the fact that "y" is often at the end of the word is a useful statistic that can be included. 

That said, I agree that removing spaces altogether is the best alternative. But I don't know if removing spaces and then applying transformations (across previous word boundaries) is a valid approach. I haven't tried this yet.