🚀 go-pugleaf

The primitive command \edef expands its second arguement before
assigning it (as a macro definition) to its first arguement.
However, primitive commands inside the second arguement are not
executed.

This comes up when I have, from some library, a macro \libmac which
won't evaluate properly is a strange environment.  So instead of
saying
	\strangeenvironment{ ... \libmac ... }
I try
	\edef\temp{\libmac}
	\strangeenvironment{ ... \temp ... }
This works fine if \libmac has no primitive commands.  But if \libmac
has, say, a nested \edef, the \edef is passed thru with other partial
evaluations of \libmac.

What I want is a \fulledef, so that
	\fulledef\temp{\libmac}
fully evaluates \libmac before assigning it to \temp.  There are obvious
problems specifying how far to evaluate, so such a \fulledef would
need to be used with care.