--- a/tests/test-extdiff.t Tue Sep 18 22:40:03 2018 -0400
+++ b/tests/test-extdiff.t Tue Sep 18 23:47:21 2018 -0400
@@ -265,7 +265,7 @@
#if windows
$ cat > 'diff tool.bat' << EOF
- > @$PYTHON "`pwd`/diff tool.py"
+ > @"$PYTHON" "`pwd`/diff tool.py"
> EOF
$ hg extdiff -p "`pwd`/diff tool.bat"
[1]