Ah, that makes it a little more interesting and experimental. Try:

/(??{ $. == 1 ? '"99","END"' : '(?=x)(?=X)' })/

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Perl reduces RSI - it saves typing

In reply to Re^3: using a regex to determine if a string is the start of the FILE by GrandFather
in thread using a regex to determine if a string is the start of the FILE by ftumsh

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