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Clarification about features on/off by default

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From:
Eric Brine
Date:
July 17, 2020 18:40
Subject:
Clarification about features on/off by default
Message ID:
CALJW-qHb=Em5=KGaZs6YJv6efm_MZ77mxLKHFvHLAPGQbaLNPA@mail.gmail.com
I was reading https://github.com/Perl/perl5/wiki/SC-Notes-2020-07-14

It talks about what features will be on and default and which ones won't
be. What does it mean to not be enabled *by default*? Does this mean
without C<< use v7; >>?

For example, I've been using C<< use 5.014; >> to enable the
unicode_strings feature among others. (It fixes bugs in m//, lc() and the
like.) It's listed as one of the features that won't be enabled by default.
Will C<< use v7; >> enable unicode_strings or not?

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