> why are values and call-with-values not public? (syncase.scm)
Because they were only implemented for compatibility with the macro
system source code. That is, they were included to make things work.
They were not intended as standard Guile primitives.
Since they have been included in R5RS they should of course be added
to Guile proper, but before that someone should examine what is a
proper implementation.
/mdj