The Perl library filename-taking and filename-producing operators would need to support it, and any interface to external systems would need to be aware of it.

But lack of support by interfaces wouldn't be that bad. You would simply end up with a file one can't create/access, which is already the case.

In reply to Re^9: how are ARGV and filename strings represented? by ikegami
in thread how are ARGV and filename strings represented? by almr

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