The clojure.walk/macroexpand-all function appears to be a general recursive macroexpansion, but it is not because it doesn't understand special forms such as let.

Current patch: 0001-CLJ-1240-Note-limits-of-clojure.walk-macroexpand-all.patch

The modified docstring in this patch notes that clojure.walk/macroexpand-all is not identical to macroexpansion by the Clojure compiler and should be used for development only.