I'm trying to implement what you posted but I'm pretty lost: what is "$fake"? what is this code supposed to do? Thanks for all your help!

$fake is a filehandle , there is no physical file, its an in-memory file, so I called it $fake

What this code does is demonstrate how to trap warnings by making them fatal, so that you can print out the current line of the file

It does this by promoting warn to die which is caught with eval

Its an answer to your question

In reply to Re^3: Find data point generating Error in Perl code ( fatal warnings) by Anonymous Monk
in thread Find data point generating Error in Perl code by kgherman

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