diff -r 030d558c6456 -r 5abc47d4ca6b tests/test-revert.t
--- a/tests/test-revert.t	Tue Sep 18 22:40:03 2018 -0400
+++ b/tests/test-revert.t	Tue Sep 18 23:47:21 2018 -0400
@@ -495,7 +495,7 @@
 
 check list of planned files
 
-  $ $PYTHON $TESTDIR/generate-working-copy-states.py filelist 2
+  $ "$PYTHON" $TESTDIR/generate-working-copy-states.py filelist 2
   content1_content1_content1-tracked
   content1_content1_content1-untracked
   content1_content1_content3-tracked
@@ -550,7 +550,7 @@
 
 Generate base changeset
 
-  $ $PYTHON $TESTDIR/generate-working-copy-states.py state 2 1
+  $ "$PYTHON" $TESTDIR/generate-working-copy-states.py state 2 1
   $ hg addremove --similarity 0
   adding content1_content1_content1-tracked
   adding content1_content1_content1-untracked
@@ -597,7 +597,7 @@
 
 (create a simple text version of the content)
 
-  $ $PYTHON ../dircontent.py > ../content-base.txt
+  $ "$PYTHON" ../dircontent.py > ../content-base.txt
   $ cat ../content-base.txt
   content1 content1_content1_content1-tracked
   content1 content1_content1_content1-untracked
@@ -622,7 +622,7 @@
 
 Create parent changeset
 
-  $ $PYTHON $TESTDIR/generate-working-copy-states.py state 2 2
+  $ "$PYTHON" $TESTDIR/generate-working-copy-states.py state 2 2
   $ hg addremove --similarity 0
   removing content1_missing_content1-tracked
   removing content1_missing_content1-untracked
@@ -661,7 +661,7 @@
 
 (create a simple text version of the content)
 
-  $ $PYTHON ../dircontent.py > ../content-parent.txt
+  $ "$PYTHON" ../dircontent.py > ../content-parent.txt
   $ cat ../content-parent.txt
   content1 content1_content1_content1-tracked
   content1 content1_content1_content1-untracked
@@ -686,7 +686,7 @@
 
 Setup working directory
 
-  $ $PYTHON $TESTDIR/generate-working-copy-states.py state 2 wc
+  $ "$PYTHON" $TESTDIR/generate-working-copy-states.py state 2 wc
   $ hg addremove --similarity 0
   adding content1_missing_content1-tracked
   adding content1_missing_content1-untracked
@@ -754,7 +754,7 @@
 
 (create a simple text version of the content)
 
-  $ $PYTHON ../dircontent.py > ../content-wc.txt
+  $ "$PYTHON" ../dircontent.py > ../content-wc.txt
   $ cat ../content-wc.txt
   content1 content1_content1_content1-tracked
   content1 content1_content1_content1-untracked
@@ -818,7 +818,7 @@
 The diff is filtered to include change only. The only difference should be
 additional `.orig` backup file when applicable.
 
-  $ $PYTHON ../dircontent.py > ../content-parent-all.txt
+  $ "$PYTHON" ../dircontent.py > ../content-parent-all.txt
   $ cd ..
   $ diff -U 0 -- content-parent.txt content-parent-all.txt | grep _
   +content3 content1_content1_content3-tracked.orig
@@ -875,7 +875,7 @@
 The diff is filtered to include change only. The only difference should be
 additional `.orig` backup file when applicable.
 
-  $ $PYTHON ../dircontent.py > ../content-base-all.txt
+  $ "$PYTHON" ../dircontent.py > ../content-base-all.txt
   $ cd ..
   $ diff -U 0 -- content-base.txt content-base-all.txt | grep _
   +content3 content1_content1_content3-tracked.orig
@@ -902,7 +902,7 @@
 revert all files individually and check the output
 (output is expected to be different than in the --all case)
 
-  $ for file in `$PYTHON $TESTDIR/generate-working-copy-states.py filelist 2`; do
+  $ for file in `"$PYTHON" $TESTDIR/generate-working-copy-states.py filelist 2`; do
   >   echo '### revert for:' $file;
   >   hg revert $file;
   >   echo
@@ -979,7 +979,7 @@
 check resulting directory against the --all run
 (There should be no difference)
 
-  $ $PYTHON ../dircontent.py > ../content-parent-explicit.txt
+  $ "$PYTHON" ../dircontent.py > ../content-parent-explicit.txt
   $ cd ..
   $ diff -U 0 -- content-parent-all.txt content-parent-explicit.txt | grep _
   [1]
@@ -995,7 +995,7 @@
 revert all files individually and check the output
 (output is expected to be different than in the --all case)
 
-  $ for file in `$PYTHON $TESTDIR/generate-working-copy-states.py filelist 2`; do
+  $ for file in `"$PYTHON" $TESTDIR/generate-working-copy-states.py filelist 2`; do
   >   echo '### revert for:' $file;
   >   hg revert $file --rev 'desc(base)';
   >   echo
@@ -1072,7 +1072,7 @@
 check resulting directory against the --all run
 (There should be no difference)
 
-  $ $PYTHON ../dircontent.py > ../content-base-explicit.txt
+  $ "$PYTHON" ../dircontent.py > ../content-base-explicit.txt
   $ cd ..
   $ diff -U 0 -- content-base-all.txt content-base-explicit.txt | grep _
   [1]