change how macroexpansion is done during inline caching so that nested &env are correctly computed. Allows for inline caching to occur nested inside an inline caching expression

project.clj

@@ -7,7 +7,8 @@
   :test-paths ["test", "target/test-classes"]
   :jar-exclusions [#"\.cljx"]
   :auto-clean false
-  :dependencies [[org.clojure/tools.macro "0.1.2"]]
+  :dependencies [[org.clojure/tools.macro "0.1.2"]
+                 [riddley "0.1.12"]]
   :profiles {:provided {:dependencies
                         [[org.clojure/clojure "1.6.0"]
                          [org.clojure/clojurescript "0.0-3211"]]}

src/clj/com/rpl/specter/macros.clj

@@ -1,7 +1,7 @@
 (ns com.rpl.specter.macros
   (:require [com.rpl.specter.impl :as i]
-            [clojure.walk :as walk]
-            [clojure.tools.macro :as m])
+            [clojure.tools.macro :as m]
+            [riddley.walk :as walk])
   )
 
 (defn gensyms [amt]
@@ -398,6 +398,10 @@
                     (-> &env keys set) ;clj
                     )
         used-locals (vec (i/walk-select local-syms vector path))
+
+        ;; note: very important to use riddley's macroexpand-all here, so that
+        ;; &env is preserved in any potential nested calls to select (like via
+        ;; a view function)
         expanded (walk/macroexpand-all (vec path))
         prepared-path (ic-prepare-path local-syms expanded)
         possible-params (vec (ic-possible-params expanded))

test/com/rpl/specter/core_test.cljx

@@ -957,3 +957,15 @@
       )))
   (s/must-cache-paths! false)
   )
+
+(deftest nested-inline-caching-test
+  (is (= [[1]]
+         (let [a :b]
+           (select
+             (s/view
+               (fn [v]
+                 (select [(s/keypath v) (s/keypath a)]
+                   {:a {:b 1}})))
+             :a
+             ))))
+  )