--- /dev/null
+#!/bin/sh -e
+
+# output width
+if "$1" --help | grep -v 'default:' | grep -E -q '.{80}.'; then
+ echo "$(basename "$1") --help output is too wide:"
+ "$1" --help | awk 'length > 80' | grep -E --color=yes '.{80}'
+ exit 1
+fi
+
+# no --help output to stdout
+if "$1" --help 2>&1 1>/dev/null | grep .; then
+ echo "$(basename "$1") --help prints to stderr"
+ exit 2
+fi
+
+# error output to stderr
+if ! "$1" --no-such-parameter 2>&1 1>/dev/null | grep -q .; then
+ echo "$(basename "$1") with an unknown parameter does not print to stderr"
+ exit 3
+fi