Re: Intelligible non-decryption
Why would you sanitise it in the first place?
It's the source-code that you will subsequently feed into a whitespace compiler/interpreter that knows to expect code written in whitespace and won't, therefore, sanitise it but compile/interpret it.*
You then run the resultant binary (if one is necessary**) - which generates the desired 'plaintext' (so to speak) output.
It's only an n>1 party that would be likely to mistake it for a corrupted 'document' - you (and any other parties privy to it) know otherwise and won't make the mistake of doing anything else with it.
Or have I misunderstood the point you are making?
* assuming, of course, that there are no syntax errors.
** which, of course, it /wouldn't/ be, if it were being interpreted.