[plt-scheme] new require-spec: all-except-from

From: Doug Orleans (dougo at place.org)
Date: Fri May 14 01:29:13 EDT 2004

This would be really handy:

(require "foo.ss")
(require (all-except-from "bar.ss" "foo.ss"))

This would require everything from "foo.ss", then everything from
"bar.ss" that wasn't already imported from "foo.ss".  This would be
much nicer than using `all-except' and having to enumerate all the
imports from "bar.ss" that conflict with "foo.ss".

Is this doable?

--dougo at place.org

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