Issue when expanding aliases for multiple-line input

[dundalek]

Here's a sample case:

;; Lets define a sample var and access its value
closh $ (def hi "hello")
#'user/hi
closh $ (str hi)
"hello"
closh $ (str
   #_=>  hi
   #_=>  )
"hello"

;; Bug: By introducing an alias we will shadow a variable even inside clojure form
;; (Because we process input on per line basis)
closh $ (defalias hi "echo hi")
closh $ (str
   #_=>  hi
   #_=>  )
Syntax error compiling at (REPL:0:0).
Unable to resolve symbol: echo in this context