Updated force to recursively force promises.

CHANGELOG.md

@@ -13,6 +13,7 @@ Bug Fixes
 - Improved `(scheme lazy)` to allow `force` and `make-promise` to accept an argument of any type. Improved representation of promises to more precisely differentiate them from other objects.
 - Add type checking to record type accessor functions. We now raise an error if the passed object is of the wrong record type.
 - Fix issues with expanding `cond-expand` expressions in libraries. Previously there would be issues with the expansion if the code needed to be within the context of a `begin`.
+- Updated `(scheme lazy)` such that `force` will recursively force promises.
 
 ## 0.20 - August 14, 2020
 

scheme/lazy.sld

@@ -28,7 +28,7 @@
   (define force
       (lambda (obj)
         (if (promise? obj)
-            ((cdr obj))
+            (force ((cdr obj)))
             obj)))
 
   (define-syntax delay