'Civet' certainly implies your code is being processed, but I'm not sure the connotation is desirable.
And all IMHO of course, but significant-whitespace is the worst idea ever.
Simple copy/paste is enough to break significant-whitespace, let alone space-vs-tabs, etc, etc.
But again, all IMHO, I realise it has it's fans.
You'd think not, and yet ...
Hear hear! I never heard a single argument for significant invisible characters that makes sense, ever.
Who would want to have a program that fails because you used invisible character X instead of invisible character Y?