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my %SEPARATOR_BY_OS = ( darwin => ':', MSWin32 => '\\' ); ... sub get_pathname_separator { $SEPARATOR_BY_OS{$^O} // '/' }
index 'DARWIN', 'WIN' == 3
($q=q:Sq=~/;[c](.)(.)/;chr(-||-|5+lengthSq)`"S|oS2"`map{chr |+ord }map{substrSq`S_+|`|}3E|-|`7**2-3:)=~y+S|`+$1,++print+eval$q,q,a,