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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://perldoc.perl.org/Encode.html
That has historically been Perl's notion of UTF-8, as that is how UTF-8 was first conceived by Ken Thompson when he invented it. However, thanks to later revisions to the applicable standards, official UTF-8 is now rather stricter than that.
https://perldoc.perl.org/perlunifaq.html
Because the internal format is often UTF-8, these bugs are hard to spot, because UTF-8 is usually the encoding you wanted! But don't be lazy, and don't use the fact that Perl's internal format is UTF-8 to your advantage. Encode explicitly to avoid weird bugs, and to show to maintenance programmers that you thought this through.
https://stackoverflow.com/questions/9473321/php-writeexcel-and-utf-8-support
PHP writeexcel and UTF-8 support. Ask Question Asked 7 years, 9 months ago. ... Php_writeexcel is a port of the Perl module Spreadsheet::WriteExcel. However, the port is from a time when Unicode strings weren't supported in the underlying Excel file format.
https://stackoverflow.com/questions/21092427/perl-regex-replace-with-utf-8-characters
I despair on a function that I try to write with Perl. My function is to filter a string for specific characters. I allow some characters like A-Z, a-z, 0-9 and I want also allow some german umlauts. But every time I define them in my regular expression, the replacement fails. My encoding is UTF-8 (server, perl, scripts). This is my function:
https://perlmaven.com/search/UTF-8
Searching for "UTF-8" Results: How to check if a string is all upper case (lower case) characters? Open and read from text files; What is Unicode; What is a text file and what is a binary file? Writing to files with Perl; Image::ExifTool IPTC UTF-8 Support? Don't miss the Perl Weekly
https://perldoc.perl.org/perluniintro.html
Note that this means that Perl expects other software to work the same way: if Perl has been led to believe that STDIN should be UTF-8, but then STDIN coming in from another command is not UTF-8, Perl will likely complain about the malformed UTF-8. All features that combine Unicode and I/O also require using the new PerlIO feature.
http://www.perlmonks.org/bare/?node_id=347150
Re: Does Perl support unicode-16? by graff (Chancellor) on Apr 22, 2004 at 05:28 UTC: In one sense, the difference between utf-16 on the one hand (either the "little-endian" or "big-endian" variety: UTF-16LE, UTF-16BE), and utf-8 on the other, is kind of like the difference between a raw binary file and a base64 or uuencoded version of that file.
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