diff -r be4915009b09 -r 8cc6036bca53 tests/test-revset.t
--- a/tests/test-revset.t	Thu Apr 30 23:02:52 2015 -0400
+++ b/tests/test-revset.t	Sat May 02 00:15:03 2015 +0900
@@ -1066,12 +1066,16 @@
     <fullreposet+ 0:9>>
   6
 
-  $ HGPLAIN=1 try m
+  $ HGPLAIN=1
+  $ export HGPLAIN
+  $ try m
   ('symbol', 'm')
   abort: unknown revision 'm'!
   [255]
 
-  $ HGPLAIN=1 HGPLAINEXCEPT=revsetalias try m
+  $ HGPLAINEXCEPT=revsetalias
+  $ export HGPLAINEXCEPT
+  $ try m
   ('symbol', 'm')
   (func
     ('symbol', 'merge')
@@ -1081,8 +1085,6 @@
     <fullreposet+ 0:9>>
   6
 
-(for some reason HGPLAIN and HGPLAINEXCEPT can carry forward)
-
   $ unset HGPLAIN
   $ unset HGPLAINEXCEPT
 
@@ -1097,14 +1099,18 @@
   <baseset+ [8]>
   8
 
-  $ HGPLAIN=1 try 'p2(.)'
+  $ HGPLAIN=1
+  $ export HGPLAIN
+  $ try 'p2(.)'
   (func
     ('symbol', 'p2')
     ('symbol', '.'))
   * set:
   <baseset+ []>
 
-  $ HGPLAIN=1 HGPLAINEXCEPT=revsetalias try 'p2(.)'
+  $ HGPLAINEXCEPT=revsetalias
+  $ export HGPLAINEXCEPT
+  $ try 'p2(.)'
   (func
     ('symbol', 'p2')
     ('symbol', '.'))