[Bese-devel] Special variables

[Levente Mészáros]

Hello,

This is an update on the preliminary special variable support in arnesi/cc.

Now special variables should work correctly in defun/cc, let and let*
forms with the well known lisp declare forms. The cc code integrates
well with normal lisp code regarding special variables. There is a
comprehensive test suite to check this.

To import special variables from the calling lisp code and capture
them within the continuation one can use (declare (special var))
within defun/cc, let and let*.

Exporting special variables to called lisp code is done automatically.
We might consider to change this in the future, maybe there should be
a special (declare (export var)) or something like that.

Levy
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