--- a/tests/test-merge-tools.t	Tue Sep 18 22:40:03 2018 -0400
+++ b/tests/test-merge-tools.t	Tue Sep 18 23:47:21 2018 -0400
@@ -68,7 +68,7 @@
 override $PATH to ensure hgmerge not visible; use $PYTHON in case we're
 running from a devel copy, not a temp installation
 
-  $ PATH="$BINDIR:/usr/sbin" $PYTHON "$BINDIR"/hg merge -r 2
+  $ PATH="$BINDIR:/usr/sbin" "$PYTHON" "$BINDIR"/hg merge -r 2
   merging f
   warning: conflicts while merging f! (edit, then use 'hg resolve --mark')
   0 files updated, 0 files merged, 0 files removed, 1 files unresolved
@@ -117,7 +117,7 @@
 
   $ echo "echo fail" > false
   $ hg up -qC 1
-  $ PATH="`pwd`:$BINDIR:/usr/sbin" $PYTHON "$BINDIR"/hg merge -r 2
+  $ PATH="`pwd`:$BINDIR:/usr/sbin" "$PYTHON" "$BINDIR"/hg merge -r 2
   merging f
   warning: conflicts while merging f! (edit, then use 'hg resolve --mark')
   0 files updated, 0 files merged, 0 files removed, 1 files unresolved
@@ -131,7 +131,7 @@
 
   $ mkdir false
   $ hg up -qC 1
-  $ PATH="`pwd`:$BINDIR:/usr/sbin" $PYTHON "$BINDIR"/hg merge -r 2
+  $ PATH="`pwd`:$BINDIR:/usr/sbin" "$PYTHON" "$BINDIR"/hg merge -r 2
   merging f
   warning: conflicts while merging f! (edit, then use 'hg resolve --mark')
   0 files updated, 0 files merged, 0 files removed, 1 files unresolved