+echo 'ls' | TERM=dumb whatnow -noedit -prompt '' 2> "$actualerr" | \
+ sort > "$actual"
+
+check "$expectederr" "$actualerr" 'keep first'
+check "$expected" "$actual" 'keep first'
+
+# Check with SHELL unset. This won't reveal any problems if
+# /bin/sh sets SHELL, which bash does.
+unset SHELL
+
+echo 'ls' | TERM=dumb whatnow -noedit -prompt '' 2> "$actualerr" | \
+ sort > "$actual"