[0], [stdout], [ignore], [kill `cat pid`])
AT_CHECK([sort stdout | ${PERL} $srcdir/uuidfilt.pl]m4_if([$6],,, [[| $6]]),
[0], [$4], [], [kill `cat pid`])
[0], [stdout], [ignore], [kill `cat pid`])
AT_CHECK([sort stdout | ${PERL} $srcdir/uuidfilt.pl]m4_if([$6],,, [[| $6]]),
[0], [$4], [], [kill `cat pid`])