GitLab

kudos to François for spotting the problem

fallback on colorizing the identifier.

otherwise we lose the beginning of the transformation chain

but not use it by default, because of bad caching of smt_encoding
transformations. Because of this, new function symbols appear again
and again, and since we don't forget function symbols in trans-based
printers, we obtain names like at234.

also, introduce in Printer the p-printing transformations