unwind-protect
(MIT) A Lisp operator which evaluates an expression and then, even if that expression causes a non-local exit, evaluates zero or more other expressions. This can be used to ensure that essential "clean-up" operations are performed even in the presence of errors.
Nearby terms:
unshielded twisted pair « unswizzle « untyped « unwind-protect » unwind the stack » UN*X » unzip