Re: Is there some universal Unicode+UTF8 switch?

Try utf8::all. It's not universal, because it handles only the core functionality, not libraries. Your use case can be much simplified, though. I strongly suspect you have too much code. Consider:

HTTP::Response provides both content (returns octets) and decoded_content (returns characters, appropriately decoded from Content-Type header).
decode_json wants to consume octets.

This means the following DWYW:

use LWP::UserAgent qw();
use JSON::MaybeXS qw(decode_json);
my $ua = LWP::UserAgent->new;
my $res = $ua->get('https://ru.wikipedia.org/w/api.php?action=query&fo
+rmat=json&formatversion=2&list=allusers&auactiveusers&aufrom=%D0%91')
+;
die $res->status_line unless $res->is_success;
my $json_OCTETS = $res->content;
my $all_users_CHARACTERS = decode_json $json_OCTETS;
my $continue_aufrom_CHARACTERS = $all_users_CHARACTERS->{continue}{auf
+rom};
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Your CGI script's templating system should take care to produce UTF-8 encoded octets. If you don't have one, then either one of

use Encode qw(encode);
my $continue_aufrom_OCTETS = encode('UTF-8', $continue_aufrom_CHARACTE
+RS, Encode::FB_CROAK);
STDOUT->print($continue_aufrom_OCTETS);
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binmode STDOUT, ':encoding(UTF-8)';
STDOUT->print($continue_aufrom_CHARACTERS);
[download]

is appropriate. The first variant is more robust.

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Re^2: Is there some universal Unicode+UTF8 switch? by VK (Novice) on Sep 01, 2019 at 19:39 UTC
use utf8::all; sounds the most promising, thank you and I'll try it. The reason I didn't use it yet is that the main doc https://perldoc.perl.org/utf8.html doesn't have a single mention of this option - so either you know about utf8::all in advance, or you are out of luck. The JSON function shortcut decode_json has UTF8 decoding hardcoded to "on". To make it "off" and to avoid double encoding I had to use the full call like JSON->new->utf8(0)->decode($response->content) If utf8::all solves this problem as well, then I can use the function shortcut. I will check everything later today. (Update) Noop, I rechecked - only the current long code reliably working for non-ASCII. For the sample URL above I do my $response = LWP call and then my $data1 = JSON->new->utf8(0)->decode($response->content); my $data2 = decode_json($response->content); my $data3 = $response->decoded_content; and then my $test = $data1->{query}->{allusers}[0]->{name}; 1) is always working for my needs. 2) is woking if called in some obvious scalar context. One tries slice referenced array or anything complex - it falls to the "Perl branded jam" with Ñ Ð and the like. 3) is stably DOA (dead on arrival) so the same 2) but right away. So utf8::all should be written and extended to some utf8::all_throughout "Written" means to the reliability and stability level to be included in prominent Perl distributions. Until then the answer to my initial question seems negative.	[reply]
Re^3: Is there some universal Unicode+UTF8 switch? by daxim (Curate) on Sep 02, 2019 at 10:09 UTC
slice referenced array or anything complex - it falls to the "Perl branded jam" I'm sceptical about that claim. Show your code.	[reply]
Re^2: Is there some universal Unicode+UTF8 switch? by Anonymous Monk on Sep 02, 2019 at 11:29 UTC
Just stylin: `STDOUT->binmode(':encoding(UTF-8)'); STDOUT->print($continue_aufrom_CHARACTERS);` [download]	[reply] [d/l]