http://www.perlmonks.org?node_id=1018467


in reply to Re: Having a problem with negative look behind assertion
in thread Having a problem with negative look behind assertion

Sorry, but that's half wrong. See perldoc perlretut which makes it very clear: look aheads need NOT be fixed width; only the look behind flavor.

If you didn't program your executable by toggling in binary, it wasn't really programming!