Further fix arglists in lumo

It actually removes the post processing and adds a pr-str in
`inf-clojure-arglists-form-lumo`.

Author: arichiardi

inf-clojure.el

@@ -680,7 +680,7 @@ If you are using REPL types, it will pickup the most approapriate
 (define-obsolete-variable-alias 'inf-clojure-arglist-command 'inf-clojure-arglists-form "2.0.0")
 
 (defcustom inf-clojure-arglists-form-lumo
-  "(lumo.repl/get-arglists \"%s\")"
+  "(pr-str (lumo.repl/get-arglists \"%s\"))"
   "Lumo form to query inferior Clojure for a function's arglists."
   :type 'string
   :package-version '(inf-clojure . "2.0.0"))
@@ -958,7 +958,8 @@ See variable `inf-clojure-arglists-form'."
          (arglists-data (read arglists-result)))
     (cond
      ((null arglists-data) nil)
-     ((listp arglists-data) (string-trim (inf-clojure--single-linify arglists-result))))))
+     ((stringp arglists-data) arglists-data)
+     ((listp arglists-data) arglists-result))))
 
 (defun inf-clojure-show-arglists (prompt-for-symbol)
   "Show the arglists for function FN in the mini-buffer.