By having use utf8; in your code, you only tell Perl that your source code is in UTF-8 (so the inverted question mark gets recognized as that), not what the input and output should be encoded in. Perl knows that your output handle is (say) Latin-1 and as it can convert the Unicode string it read from the UTF-8 to Latin-1 it does so when printing.

I find the approach of explicitly specifying the encodings for filenames the easiest way to get consistent results:

#!perl
use strict;
use warnings;

use charnames ':full';

binmode STDOUT, ':encoding(UTF-8)';
print "\N{INVERTED QUESTION MARK}\n"

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In reply to Re: Matching non-ASCII file contents with file name. by Corion
in thread Matching non-ASCII file contents with file name. by mldvx4

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