Don't know about the rest, but the "Something's wrong" message is simply from a warn with an empty string or without a string at all: 
$ perl -e 'warn'
Warning: something's wrong at -e line 1.
$ perl -e 'warn $a'
Warning: something's wrong at -e line 1.

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Liz

In reply to Re: Archive::Tar and error handling by liz
in thread Archive::Tar and error handling by Anonymous Monk

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