SRFI 172 is now in final status.This SRFI provides two libraries for use with R7RS that provide a way to sandbox the eval procedure to make it safer to use in evaluating Scheme expressions of doubtful provenance. The intention is to call eval, passing it an S-expression representing a Scheme procedure and the environment defined by one of these libraries. Since code evaluated by eval runs in a null lexical environment, the resulting procedure can then be invoked with less concern about possib...
