diff --git a/lib/comp.c b/lib/comp.c
index 4e27f1e..f6372d3 100644
--- a/lib/comp.c
+++ b/lib/comp.c
@@ -1517,6 +1517,7 @@ static int compile_cons_xlist_expression (hcl_t* hcl, hcl_oop_t obj)
 
 		if (HCL_IS_CONS_CONCODED(hcl,obj,HCL_CONCODE_EXPLIST))
 		{
+			/* nothing to patch */
 		}
 		else
 		{
@@ -1526,6 +1527,11 @@ static int compile_cons_xlist_expression (hcl_t* hcl, hcl_oop_t obj)
 			cf->operand = HCL_SMOOI_TO_OOP(nargs);
 		}
 	}
+	/* TODO:??? else if (HCL_IS_CONS_CONCODED(hcl, car, HCL_CONCODE_EXPLIST))
+	{
+		HCL_ASSERT (hcl, hcl->option.trait & HCL_CLI_MODE);
+		SWITCH_TOP_CFRAME (hcl, COP_COMPILE_OBJECT, HCL_SMOOI_TO_OOP(0));
+	} */
 	else
 	{
 		hcl_setsynerrbfmt (hcl, HCL_SYNERR_CALLABLE, HCL_NULL, HCL_NULL, "invalid callable %O in function call - %O", car, obj); /* error location */
diff --git a/lib/exec.c b/lib/exec.c
index c3604a1..b26cf5d 100644
--- a/lib/exec.c
+++ b/lib/exec.c
@@ -1008,6 +1008,7 @@ static HCL_INLINE int call_primitive (hcl_t* hcl, hcl_ooi_t nargs)
 #include <string.h>
 #include <stdlib.h>
 #include <errno.h>
+#include <stdio.h>
 
 extern char **environ;
 
diff --git a/lib/hcl-s.h b/lib/hcl-s.h
index fb1a38b..180e660 100644
--- a/lib/hcl-s.h
+++ b/lib/hcl-s.h
@@ -199,7 +199,6 @@ HCL_EXPORT void hcl_server_freemem (
 );
 
 
-
 HCL_EXPORT int hcl_server_proto_feed_reply (
 	hcl_server_proto_t* proto,
 	const hcl_ooch_t*   ptr,
diff --git a/lib/work.txt b/lib/work.txt
new file mode 100644
index 0000000..3aa4a2a
--- /dev/null
+++ b/lib/work.txt
@@ -0,0 +1,75 @@
+(ls -laF @((pwd) (pwd) (pwd)))
+2018-08-08 00:32:16 +0900  000000 push_literal @0
+2018-08-08 00:32:16 +0900  000001 push_literal @1
+2018-08-08 00:32:16 +0900  000002 push_literal @2
+2018-08-08 00:32:16 +0900  000003 call 0                 pwd
+2018-08-08 00:32:16 +0900  000004 push_literal @2
+2018-08-08 00:32:16 +0900  000005 call 0                 pwd
+2018-08-08 00:32:16 +0900  000006 push_literal @2
+2018-08-08 00:32:16 +0900  000007 call 0                 pwd
+2018-08-08 00:32:16 +0900  000008 call 2
+2018-08-08 00:32:16 +0900  000009 pop_stacktop
+2018-08-08 00:32:16 +0900 @0         ls
+2018-08-08 00:32:16 +0900 @1         -laF
+2018-08-08 00:32:16 +0900 @2         pwd
+
+
+
+
+(ls -laF @((echo qq) (echo jj) (echo -n cc)))
+2018-08-08 00:57:55 +0900  000000 push_literal @0
+2018-08-08 00:57:55 +0900  000001 push_literal @1
+2018-08-08 00:57:55 +0900  000002 push_literal @2
+2018-08-08 00:57:55 +0900  000003 push_literal @3
+2018-08-08 00:57:55 +0900  000004 call 1               echo qq
+2018-08-08 00:57:55 +0900  000005 push_literal @2
+2018-08-08 00:57:55 +0900  000006 push_literal @4
+2018-08-08 00:57:55 +0900  000007 call 1               echo jj
+2018-08-08 00:57:55 +0900  000008 push_literal @2
+2018-08-08 00:57:55 +0900  000009 push_literal @5
+2018-08-08 00:57:55 +0900  000010 push_literal @6
+2018-08-08 00:57:55 +0900  000011 call 2              echo -n cc
+2018-08-08 00:57:55 +0900  000012 call 2              ls -laF ....
+2018-08-08 00:57:55 +0900  000013 pop_stacktop
+2018-08-08 00:57:55 +0900 @0         ls
+2018-08-08 00:57:55 +0900 @1         -laF
+2018-08-08 00:57:55 +0900 @2         echo
+2018-08-08 00:57:55 +0900 @3         qq
+2018-08-08 00:57:55 +0900 @4         jj
+2018-08-08 00:57:55 +0900 @5         -n
+2018-08-08 00:57:55 +0900 @6         cc
+
+
+
+(ls -laF @((@((pwd)))))
+
+
+
+ls -laF (
+    (
+       pwd
+       ps -ef
+    ) 
+)      ====> (ls -laF @(
+                         ( 
+                            @(   
+                                (pwd) 
+                                (ps -ef)  
+                             ) 
+                         ) 
+                       )  
+             )
+
+
+
+ls -laF (
+    (
+       pwd
+       ps -ef
+    )  -qq
+)      ===========> (ls -laF @(      
+                                     (
+                                         @((pwd) (ps -ef)) -qq
+                                     )
+                              )
+                    )