Wise ones, is there a way to open with a custom PerlIO layer by default? The Layer I'm using is File::BOM. Of course, I could change all my opens to File::BOM::open_boms, but I don't want to change the (legacy) code, I want to change the environment it runs in.

I understand how to open(FILE,"<:via(Layer)", $path), and what it means. But I want open(FILE,$path) to "default" to :via(Layer).

Lacking wisdom, I tried combinations of 

    use open ':via(Layer)'
    use Layer
    use open 'via(Layer)'

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and even
    env PERLIO='via(Layer)'

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The usual result is

    Unknown PerlIO layer class ':via(Layer)' at ...

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and my surprise thereat shows that there is something about PerlIO::via that I do not understand.

In reply to open via by ajmalton

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