I would say only Athanasius has a correct answer yet, I see mistakes in the other answers. So I made sure and tested. This should work (and still uses only one regex):

if( $line =~ /^(?!fee).*[Bb]ar.*\.java/ )

[download]

This is a negative look-ahead fixed at the start of the line (with ^).

In reply to Re: Having a problem with negative look behind assertion by jethro
in thread Having a problem with negative look behind assertion by SirClive

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