There are no dynamically scoped function bindings in Common Lisp.
Pascal Costanza somehow implemented such a thing. See 2003 paper "Dynamically Scoped Functions as the Essence of AOP", a precursor to work on AspectL and ContextL.
Dynamically scoped functions are wrappers which indirect to lambdas bound to a special variable; i.e. this is boostrapped out of dynamic variable scope.
Pascal Costanza somehow implemented such a thing. See 2003 paper "Dynamically Scoped Functions as the Essence of AOP", a precursor to work on AspectL and ContextL.
https://dl.acm.org/doi/pdf/10.1145/944579.944587
Dynamically scoped functions are wrappers which indirect to lambdas bound to a special variable; i.e. this is boostrapped out of dynamic variable scope.