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I was using use encoding qw( UTF-8 ); but in Perl 5.18 it's deprecated.

As vsespb said, do this instead:

use utf8;

This pragma allows you to use non-ASCII characters inside your Perl script—that is, characters outside the Basic Latin block of Unicode.

I'm using this as a stop-gap:
use open qw( :encoding(utf8) ); binmode STDIN, qw{ :encoding(UTF-8) }; binmode STDOUT, qw{ :encoding(UTF-8) }; binmode STDERR, qw{ :encoding(UTF-8) };

As duelafn said, do this instead:

use open qw( :encoding(UTF-8) :std );

Carefully read Tom Christiansen's (tchrist) brilliant and exhaustive Stack Overflow post Go Thou and Do Likewise. Pay particular attention to the first section titled Simplest Rx:  7 Discrete Recommendations. These seven recommendations are essentially the answer to your question, "What is the best way to get Perl to use UTF-8 for everything?" Then read jrockway's excellent followup post.

Tom's Stack Overflow post evolved into a presentation that he gave at OSCON 2011. The slides are here.


In reply to Re: UTF-8 for Everything by Jim
in thread UTF-8 for Everything by shawnhcorey

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    [haukex]: But I was just using it as an author test anyway
    [Corion]: haukex: Aaah - I thought you were still running these tests on every machine, but you only run these as author or Devel::Cover tests
    [Corion]: haukex: Yeah, I think back then I used Test::Inline, which used a pod parser that was going through some changes and I didn't want to cater for all the various versions and thus stopped testing the Pod completely
    [choroba]: I usually do this with presentations
    [Corion]: But now I think statically (re)generating the Pod tests is a saner approach, and likely I'll regenerate the tests either in Makefile.PL or from xt/ but have them live below t/
    [choroba]: I keep the snippets in files of their own, and use a Makefile to syntax highlight them and insert them into slides, while also running them and inserting the output if required
    [Corion]: choroba: Ooooh - I didn't think of that! I write my presentations as POD and if it "roughly" looks like Perl code, I should also syntax-check that...
    [haukex]: Yes sorry I don't run them all the time, my POD tests are only run as author tests (and are excluded when I'm using Devel::Cover)
    [Corion]: choroba: Hmm - no, I keep the snippets inline, but as my framework also has support for capturing output etc., maybe I should do the same...
    [Corion]: haukex: Yes, that approach is sane, and it heals the fragility of Pod parsers in a nice way while still syntax-checking stuff

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