add examples for issues #1, #2, and #3

examples/example.il

@@ -1,8 +1,11 @@
 example = nil
 example2 = example
 
-(procedure func2(arg1 arg2 @key (args 1) (argw 2))
+; func2(g_arg1 g_arg2 ?g_args1 1 ?g_argw 2) => nil
+(procedure func2(arg1 arg2 @key (args 1) (argw 2) "gggg")
   ; some stuff to do
+  a = some_obj->field1
+  some_obj->field2 = 2
 )
 
 (