http://www.perlmonks.org?node_id=11114657


in reply to Re^3: Regex AND NOT with zero-width negative lookahead assertion
in thread Regex AND NOT with zero-width negative lookahead assertion

The  m, ... ,x match in the OPed code uses the  /x whitespace/comments modifier; your match does not. (Update: I presume mldvx4 is still using the  /x modifier.)


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