[Koha-bugs] [Bug 21848] New: Handle encoding when calling Text::Unaccent::unac_string

[bugzilla-daemon at bugs.koha-community.org]

https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=21848

            Bug ID: 21848
           Summary: Handle encoding when calling
                    Text::Unaccent::unac_string
 Change sponsored?: ---
           Product: Koha
           Version: master
          Hardware: All
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P5 - low
         Component: Architecture, internals, and plumbing
          Assignee: koha-bugs at lists.koha-community.org
          Reporter: m.de.rooy at rijksmuseum.nl
        QA Contact: testopia at bugs.koha-community.org

Triggered by running Circulation.t on bug 18677:
t/db_dependent/Circulation.t .. 1/121 
unac_string: Invalid or incomplete multibyte or wide character
unac_string: Invalid or incomplete multibyte or wide character

Note that Text::Unaccent says:
Return the unaccented equivalent of the string $string. The character set of
$string is specified by the $charset argument. The returned string is coded
using the same character set.

The only place we call unac_string is: Koha::Patron->generate_userid:
    $userid = unac_string('utf-8',$userid);
Since we say to unac_string that $userid is utf-8, we should first encode it
and the result we should decode again for further handling.

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