According to docs for strict subs:

This disables the poetry optimization, generating a compile-time error if you try to use a bareword identifier that's not a subroutine, unless it is a simple identifier (no colons) and that it appears in curly braces or on the left hand side of the => symbol.

But use Some::Thing -base;, for example, works and not looks like example in docs. Also, it may cause a surprise, when sub with name 'base' been defined before this use.

In reply to Why perl with strict allows to use -bareword? by hurricup

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