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(1) that's still not the correct sort order ( should come before )
I've no idea, but this page indicates the opposite. You may have to create a custom sort to override the default if desired.
(2) I actually get a different "sorted" list when I run the same exact code. This is the problem that I have - it seems the sort algorithms ignore the tone marks.
Perhaps it has to do with normalization. I still get the same sort order when using it.
#!/usr/bin/env perl
use v5.14;
use warnings;
use utf8::all;
use Unicode::Collate::Locale;
use Unicode::Normalize;

my $Collator = Unicode::Collate::Locale->new(locale =>'vi');
my @unsorted = ('', 'ả', '', '', 'ậ', 'ă', 'ạ', 'ẫ', 'a', 'ẩ' );
@unsorted = map { NFD($_) } @unsorted;
my @sorted = $Collator->sort(@unsorted);

say NFC("unsorted\n@unsorted");
say NFC("sorted\n@sorted");


In reply to Re^3: Sorting Vietnamese text by farang
in thread Sorting Vietnamese text by pdenisowski

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