new functions, doc updates

stdlib/stdlib.lsp

@@ -46,9 +46,6 @@
 (defn sleep (time) 
   (system-cmd (+ "sleep " (string time))))
 
-(defn get-env (var) 
-    (second (system-cmd (+ "echo ${" var "} | tr -d \"\n\""))))
-
 
 (defn third (l) (index l 2))
 (defn fourth (l) (index l 3))
@@ -196,7 +193,7 @@
             (def c 0)
             (for col row
                 (if (= c 0)
-                    (def cols_str col)
+                    (def cols_str (display col))
                     (def cols_str (+ cols_str "," (display col)))) 
                 (def c (inc c)))
             (if (= r 0)