Sounds to me like you are thinking of @ISA as a "true" global, like @INC. It's actually a package variable, so @Foo::ISA is not the same as @Bar::ISA.

In reply to Re: Avoiding the Use of @ISA = qw(Foo::Bar); by perrin
in thread Avoiding the Use of @ISA = qw(Foo::Bar); by hardburn

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