+# check malicious parameter value quoting
+msgfile=`mhpath new`
+msgnum=`basename $msgfile`
+cat >"$msgfile" <<'EOF'
+Subject: shows difficulty of quoting with /bin/sh -c
+MIME-Version: 1.0
+Content-Type: text/html; charset="oops'; echo should not see this!"
+
+EOF
+
+cat >"$expected" <<EOF
+[ part - text/html - 0B ]
+EOF
+
+run_prog mhshow -noheader -form mhl.null last 2>&1 | squeeze_whitespace >"$actual"
+check "$expected" "$actual" : malicious parameter value quoting
+