--- a/tests/test-commit-amend.t	Mon Jun 01 10:50:15 2015 +0900
+++ b/tests/test-commit-amend.t	Tue Jun 02 02:28:33 2015 +0900
@@ -1000,6 +1000,37 @@
   HG: @@ -0,0 +1,1 @@
   HG: +y
 
+  $ echo cccc >> cc
+  $ hg status -amr
+  M cc
+  $ HGEDITOR=cat hg commit --amend -e -m "cc should be excluded" -X cc
+  cc should be excluded
+  
+  HG: M: 
+  HG: A: foo y
+  HG: R: a x
+  HG: diff -r 6de0c1bde1c8 a
+  HG: --- a/a	Thu Jan 01 00:00:00 1970 +0000
+  HG: +++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
+  HG: @@ -1,2 +0,0 @@
+  HG: -a
+  HG: -a
+  HG: diff -r 6de0c1bde1c8 foo
+  HG: --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+  HG: +++ b/foo	Thu Jan 01 00:00:00 1970 +0000
+  HG: @@ -0,0 +1,1 @@
+  HG: +foo
+  HG: diff -r 6de0c1bde1c8 x
+  HG: --- a/x	Thu Jan 01 00:00:00 1970 +0000
+  HG: +++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
+  HG: @@ -1,1 +0,0 @@
+  HG: -x
+  HG: diff -r 6de0c1bde1c8 y
+  HG: --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+  HG: +++ b/y	Thu Jan 01 00:00:00 1970 +0000
+  HG: @@ -0,0 +1,1 @@
+  HG: +y
+
 Check for issue4405
 -------------------