Parens don't create lists*. 

return wantarray ? ('value') : 'value';

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is the same as 
return wantarray ? 'value' : 'value';

[download]
which is the same as 
return 'value';

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* — Except on the LHS of an assignment (indirectly) and inside of a list literal.

In reply to Re: Unit testing, context and wantarray by ikegami
in thread Unit testing, context and wantarray by mikeman

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