Luckily the nature of the input file means that this should never happen! But...if it did... ideally the index should only be matched once. PS lines 9 and 10 should read 
chomp $var1;
chomp $var2;

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i changed it to ease readers through the problem

In reply to Re:Compare two index lists by pdotcdot
in thread Compare two index lists by pdotcdot

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