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https://stackoverflow.com/questions/627661/how-can-i-output-utf-8-from-perl
How can I output UTF-8 from Perl? Ask Question Asked 10 years, 8 months ago. Active 2 years, 7 months ago. ... Any of these 3 will give you UTF8 support for all input and output streams (whether files or stdin/stdout/stderr), assuming your environment's locale is UTF8-based.
https://www.effectiveperlprogramming.com/2011/08/know-the-difference-between-utf8-and-utf-8/
Aug 28, 2011 · Know the difference between utf8 and UTF-8. ... the first version of Perl that had even rudimentary Unicode support. It encodes any characters in the range from 0 to 0xFFFF_FFFF. That is, it allows for a 32-bit encoding space. You have no problem with this code: ... ← Know the difference between character strings and UTF-8 strings.
http://www.perlmonks.org/bare/?node_id=347150
UTF-8 is another encoding, and the one Perl uses internally. It encodes all of the original 7-bit ASCII characters as a single byte, identically to the way they are encoded in ANSI.
https://grokbase.com/t/perl/unicode/03c6v2ynpx/dbi-and-utf-8
There is a fundamental asymmetry in Perl's unicode implementation: - Implicit conversion from bytestrings to ustrings assumes that the bytestrings are in Latin1. - Implicit conversion from ustrings to bytestrings assumes that the ustrings are in UTF-8.
https://www.perlmonks.org/bare/?node_id=261242
The advantage of your function is to work with Perl-5.6 too, since it check for group of bytes. But since that's no meaning to check the UTF-8 on Perl without support, since the user won't be able to generate and work with true UTF-8 data, I made that (please check if it's ok):
https://perlgeek.de/en/article/set-up-a-clean-utf8-environment
UTF-8 is usually a good choice because it efficiently encodes ASCII data too, and the character data I typically deal with still has a high percentage of ASCII chars. It is also used in many places, and thus one can often avoid conversions. Whatever you do, chose one encoding and stick to it, for your whole system.
https://metacpan.org/pod/utf8
The use utf8 pragma tells the Perl parser to allow UTF-8 in the program text in the current lexical scope. The no utf8 pragma tells Perl to switch back to treating the …
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