in reply to Re^3: Bareword error in WWW::Mechanize
in thread WWW::Mechanize “use constant xx” gets bareword error

But Perl doesn't treat them the same. Moreover, use constant ... shouldn't look into ExtUtils namespace, as it doesn't say use ExtUtils::constant. Something's very wrong with your setup.

($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,