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#! /bin/sh
if [ -z "$AWK" ]; then
printf '$AWK must be set\n' >&2
exit 1
fi
$AWK 'BEGIN{print "1st";fflush("/dev/stdout");print "2nd"|"cat"}'
$AWK 'BEGIN{print "1st";fflush("/dev/stdout");print "2nd"|"cat"}'|cat
# gawk and nawk differ here: nawk will close stdout, and future writes (by nawk
# or by the cat child) will fail. gawk's child will print "2nd" here, and also
# allow other print statements to succeed.
$AWK 'BEGIN{print "1st";fflush("/dev/stdout");close("/dev/stdout");print "2nd"|"cat"}'|cat
$AWK 'BEGIN{print "1st";fflush("/dev/stdout");print "2nd"|"cat";close("cat")}'|cat
$AWK 'BEGIN{print "1st";fflush("/dev/stdout");print "2nd"|"cat";close("cat")}'|cat
$AWK 'BEGIN{print "1st";fflush("/dev/stdout");print "2nd"|"cat";close("cat")}'|cat
$AWK 'BEGIN{print "1st";fflush("/dev/stdout");print "2nd"|"sort"}'|cat
$AWK 'BEGIN{print "1st";fflush("/dev/stdout");print "2nd"|"sort";close("sort")}'|cat
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