diff --git a/t/t0021-conversion.sh b/t/t0021-conversion.sh
index cb860296edfab2d117fc8b62505df00a51baed02..8fc39d77cec6168dae930beef785597dace24aa3 100755 (executable)
--- a/t/t0021-conversion.sh
+++ b/t/t0021-conversion.sh
. ./test-lib.sh
cat <<\EOF >rot13.sh
-tr '[a-zA-Z]' '[n-za-mN-ZA-M]'
+tr \
+ 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ' \
+ 'nopqrstuvwxyzabcdefghijklmNOPQRSTUVWXYZABCDEFGHIJKLM'
EOF
chmod +x rot13.sh