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Thanks for the link. I think I've read it before but so many years ago, I'd forgotten how magical (or maybe devilish!) diamond operators are. I'm away from my desk right now so will take another look in the morning, but it is true that the script has ARGV processing including composite arguments and a STDIN redirection(<) on the command line, so there's every possibility that there's some quirkiness that the Perl versions have handled differently. This is the only viable patch I can come up with...
while ( <> ) { next if (length($_) == 0); . .

In reply to Re^3: Angle operator [updated] by jerryhone
in thread Angle operator by jerryhone

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