Turns out that env(1) knows how to parse a properly quoted string
using -S "string", it makes the double eval used for the fetch
command to be unnecessary.

This is because running:
eval "foo $(escape $bar)"
is silly when this works:
foo $bar

So remove escaping and quoting, and sillyness.

PR:		210198
Submitted by:	mat
Exp-run by:	antoine
Sponsored by:	The FreeBSD Foundation, Absolight
Differential Revision:	https://reviews.freebsd.org/D6779