rjt already answered your question, allow me a hint for the future:

In such cases B::Deparse is your friend 

perl -MO=Deparse,-p -e 'my ($not_foo) = context() // print "Whoops"'
(my($not_foo) = (context() // print('Whoops')));

[download]

Used -p to add extra parens to highlight precedence.

Cheers Rolf

( addicted to the Perl Programming Language)

In reply to Re: Odd (to me) case of wrongly guessing context by LanX
in thread Odd (to me) case of wrongly guessing context by ibm1620

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