stdlib Call, fg, bg, $, and cd functions. wow

stdlib/list.go

@@ -54,14 +54,16 @@ func l_append(input *ast.Token, vars ast.VarTable, funcs ast.FuncTable) *ast.Tok
     iter := &i
     if *iter == nil {
         src.Inner = input.Next
-        return src
-    }
+        src.Next = nil
 
-    for (*iter).Next != nil {
-        iter = &((*iter).Next)
+    } else {
+        for (*iter).Next != nil {
+            iter = &((*iter).Next)
+        }
+
+        (*iter).Next = input.Next
+        input.Next = nil
     }
-    (*iter).Next = input.Next
-    input.Next = nil
 
     return src
 }