[Fix #510] Handle differently eldoc info obtained from the middleware

Eldoc data obtained from evaluation of inlined Clojure code needs to be
read, but this does not apply to eldoc data obtained from the
middleware.

Author: Bozhidar Batsov

cider-eldoc.el

@@ -76,7 +76,9 @@ POS is the index of the argument to highlight."
 POS is the index of current argument."
   (concat "("
           (mapconcat (lambda (args) (cider-highlight-arglist args pos))
-                     (read arglist) " ") ")"))
+                     arglist
+                     " ")
+          ")"))
 
 (defun cider-eldoc-info-in-current-sexp ()
   "Return a list of the current sexp and the current argument index."
@@ -105,7 +107,7 @@ POS is the index of current argument."
          (value (when thing
                   (cider-get-raw-value (cider-tooling-eval-sync form nrepl-buffer-ns)))))
     (unless (string= value "nil")
-      value)))
+      (read value))))
 
 (defun cider-eldoc-arglist (thing)
   "Return the arglist for THING."