$_=qq{
env 
{
{}{}
{{}}
}
};
(my $re=$_)=~s/((\{)|(\})|.)/${[')','']}[!$3]\Q$1\E${['(','']}[!$2]/gs
+;
$re = join'|',map{quotemeta}eval{/$re/};
die $@ if $@;
print +(/env\s*\{($re)\}/)[0];

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In reply to Re: Parsing... possible w/o too much stress ? by I0
in thread Parsing... possible w/o too much stress ? by spurperl

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