diff --git a/src/cmd/ksh93/tests/pty.sh b/src/cmd/ksh93/tests/pty.sh
index 8221158df..bed9564ef 100755
--- a/src/cmd/ksh93/tests/pty.sh
+++ b/src/cmd/ksh93/tests/pty.sh
@@ -453,7 +453,6 @@ w fg
 u yes-yes
 !
 
-# ======
 # err_exit #
 # Test file name completion in vi mode
 mkdir /tmp/fakehome
@@ -477,6 +476,8 @@ L raw Bourne mode literal tab characters with wide characters disabled
 # This gets handled by ed_read() in edit.c; it does not expand tab
 # characters on the command line.
 
+d 10
+p :test-1:
 w set +o vi +o emacs
 p :test-2:
 w true /de\tv/nu\tl\tl
@@ -491,21 +492,17 @@ L raw Bourne mode literal tab characters with wide characters enabled
 # This gets handled by ed_viread() in vi.c (even though vi mode is off);
 # it expands tab characters to spaces on the command line.
 
+d 10
+p :test-1:
 w set +o vi +o emacs
 p :test-2:
 w true /de\tv/nu\tl\tl
-
-# TODO: there is some race condition in either pty or in ksh's default edit
-# mode, which causes it to expect/generate either tabs ('\t') or expanded
-# spaces, randomly, intermittently. This is functionally equivalent as it
-# only affects either pty or (invisibly) the editing command line, so not a
-# high priority. Until this is tracked down and fixed, accept both.
-
-r ^:test-2: true (/de\tv/nu\tl\tl|/de       v/nu    l       l)\r\n$
+r ^:test-2: true /de       v/nu    l       l\r\n$
 p :test-3:
 !
 
-LC_ALL=C.UTF8 tst $LINENO <<"!"
+# err_exit #
+LC_ALL=C.UTF-8 tst $LINENO <<"!"
 L raw Bourne mode backslash handling
 
 # The escaping backslash feature should be disabled in the raw Bourne mode.
@@ -522,6 +519,8 @@ w true incorrect\\\cXtrue correct
 r ^:test-3: true correct\r\n$
 !
 
+# err_exit #
+# err_exit #
 for mode in emacs vi; do
 tst $LINENO << !
 L escaping backslashes in $mode mode