Definitely a bug (I think): 

#! /usr/bin/env perl

use v5.36;
use utf8;

# get all the files in the current directory
my @files = glob("*");
my ($file) = grep { /Screenshot-2024-02-23-at-1.05.14\s/ } @files;

my $ss = $files[0];
my $hex = unpack("H*", $ss);
say $hex;

say $file; # ERROR!

my $blah = "Screenshot-2024-02-23-at-1.05.14 AM.png";
my $hex2 = unpack("H*", $blah);
say $hex2;

say $hex eq $hex2 ? "hexes equal" : "hexes not equal";

say $blah =~ /Screenshot-2024-02-23-at-1.05.14\s/;  # WORKS!

[download]

OUTPUT: 

53637265656e73686f742d323032342d30322d32332d61742d312e30352e3134e280af
+414d2e706e67
Use of uninitialized value $file in say at ./test.pl line 14.

Character in 'H' format wrapped in unpack at ./test.pl line 17.
53637265656e73686f742d323032342d30322d32332d61742d312e30352e31342f414d
+2e706e67
hexes not equal
1

[download]

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In reply to Re^8: Any good ways to handle NARROW NO-BREAK SPACE characters in regex in newer versions of Perl? by nysus
in thread Any good ways to handle NARROW NO-BREAK SPACE characters in regex in newer versions of Perl? by nysus

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