From 9c83ad4c4492c713530e08413fc3025b770cfd85 Mon Sep 17 00:00:00 2001
From: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Date: Wed, 8 Jan 2020 09:13:18 +0000
Subject: [PATCH] Bug 14759: Replace Text::Unaccent with Unicode::Normalize

As shown in the comments on the bug, it appears that Unicode::Normalize
is the most reliable way to strip accents from strings for this use
case.

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
---
 C4/Installer/PerlDependencies.pm | 5 -----
 Koha/Patron.pm                   | 6 +++---
 2 files changed, 3 insertions(+), 8 deletions(-)

diff --git a/C4/Installer/PerlDependencies.pm b/C4/Installer/PerlDependencies.pm
index d553961cc5..84f5fe4930 100644
--- a/C4/Installer/PerlDependencies.pm
+++ b/C4/Installer/PerlDependencies.pm
@@ -627,11 +627,6 @@ our $PERL_DEPS = {
         required   => 0,
         min_ver    => '0.40'
     },
-    'Text::Unaccent' => {
-        'usage'    => 'Core',
-        'required' => '1',
-        'min_ver'  => '1.08',
-    },
     'Test::WWW::Mechanize' => {
         'usage'    => 'Testing suite',
         'required' => '0',
diff --git a/Koha/Patron.pm b/Koha/Patron.pm
index a3ebfc9b2e..f48e67a696 100644
--- a/Koha/Patron.pm
+++ b/Koha/Patron.pm
@@ -23,7 +23,7 @@ use Modern::Perl;
 use Carp;
 use List::MoreUtils qw( any uniq );
 use JSON qw( to_json );
-use Text::Unaccent qw( unac_string );
+use Unicode::Normalize;
 
 use C4::Context;
 use C4::Log;
@@ -1419,14 +1419,14 @@ sub generate_userid {
       $firstname =~ s/[[:digit:][:space:][:blank:][:punct:][:cntrl:]]//g;
       $surname =~ s/[[:digit:][:space:][:blank:][:punct:][:cntrl:]]//g;
       my $userid = lc(($firstname)? "$firstname.$surname" : $surname);
-      $userid = unac_string('utf-8',$userid);
+      $userid = NFKD( $userid );
+      $userid =~ s/\p{NonspacingMark}//g;
       $userid .= $offset unless $offset == 0;
       $self->userid( $userid );
       $offset++;
      } while (! $self->has_valid_userid );
 
      return $self;
-
 }
 
 =head3 attributes
-- 
2.11.0