Modify SUBST to:
authorAlfredo Beaumont <alfredo.beaumont@gmail.com>
Wed, 15 May 2013 12:56:54 +0000 (14:56 +0200)
committerAlfredo Beaumont <alfredo.beaumont@gmail.com>
Wed, 15 May 2013 12:57:09 +0000 (14:57 +0200)
commit7b9c47361e1aac31bc78d4627b651b8cc5ee0a7c
tree42da1d88772640f1a9b7b02f104fba9633b5b24c
parent07da35c5e99ed9604540d76455330c1e8734b411
Modify SUBST to:
* use satisfies-test-p to check if tree items satisfy the test
* return the same (sub)tree if no substitution has been done. Implementation
  dependent test is changed accordingly.
src/list.lisp
tests/list.lisp