SI-9450 Fix triple quoted strings in REPL :power mode

Some extra synthetic code generated under this mode failed to escape
input before adding it to a literal string. It used to get away with
this most of the time by triple quoting the literal.

This commit reuses Scala string escaping logic buried in `Constant`
to do this properly. Actually, the proper approach would be to build
the synthetic code with trees and quasiquotes, and avoid the mess
of stringly-genererated code.

I threw in some defensive hygiene for the reference to `Nil` while
I was in the neighbourhood.

0 files changed, 0 insertions, 0 deletions