Re: perl regular expressions and empty strings unexpected results


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Re: perl regular expressions and empty strings unexpected results

by Anonymous Monk

on Jan 23, 2012 at 10:19 UTC ( #949357=note: print w/replies, xml )

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in reply to perl regular expressions and empty strings unexpected results

Perl comes with B::Deparse

$ perl -e " print ''=~/.*/ and ''=~/bar/ "
1
$ perl -MO=Deparse -e " print ''=~/.*/ and ''=~/bar/ "
'' =~ /bar/ if print '' =~ /.*/;
-e syntax OK

$ perl -MO=Deparse,-p -e " print ''=~/.*/ and ''=~/bar/ "
(print(('' =~ /.*/)) and ('' =~ /bar/));
-e syntax OK
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