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echo T.flags: test some commandline flags
awk=${awk-../a.out}
$awk >foo 2>&1
grep '[Uu]sage' foo >/dev/null || echo 'T.flags: bad usage'
$awk -f >foo 2>&1
grep 'no program' foo >/dev/null || echo 'T.flags: bad no program'
$awk -f glop/glop >foo 2>&1
grep 'can.t open' foo >/dev/null || echo 'T.flags: bad can.t open program'
$awk -fglop/glop >foo 2>&1
grep 'can.t open' foo >/dev/null || echo 'T.flags: bad can.t open program 2'
$awk -zz 'BEGIN{}' >foo 2>&1
grep 'unknown option' foo >/dev/null || echo 'T.flags: bad unknown option'
$awk -F >foo 2>&1
grep 'no field separator' foo >/dev/null || echo 'T.flags: bad missing field separator'
### Awk is now like gawk and splits into separate characters if FS = ""
# $awk -F '' >foo 2>&1
# grep 'field separator FS is empty' foo >/dev/null || echo 'T.flags: bad empty field separator'
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