On my machine (Fedora 2.6.7, perl 5.8.5) the following one liner prints true:

 perl -e 'if (undef() eq undef()) {print "true" }else{ print "false"}'

This variation (unexpectedly) prints nothing:

 perl -ew 'if (undef() eq undef()) {print "true" }else{ print "false"}'

Do any of you brothers (be you either male or female) have a clue as to why this difference in behavior?

--DrWhy

"If God had meant for us to think for ourselves he would have given us brains. Oh, wait..."

In reply to Unexpected effect of -w with undef by DrWhy

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