[Tickets #13163] non-multibyte-aware truncate function in View/Helper/Text.php

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Ticket URL: http://bugs.horde.org/ticket/13163
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  Ticket             | 13163
  Created By         | Jasper.Olbrich at students.uni-marburg.de
  Summary            | non-multibyte-aware truncate function in
                     | View/Helper/Text.php
  Queue              | IMP
  Version            | Git master
  Type               | Bug
  State              | Unconfirmed
  Priority           | 1. Low
  Milestone          |
  Patch              |
  Owners             |
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Jasper.Olbrich at students.uni-marburg.de (2014-05-06 11:51) wrote:

The function truncate in framework/View/lib/Horde/View/Helper/Text.php  
uses substr and thus fails for example for utf8-strings. To reproduce,  
try to view a mail with this subject
1234567890123456789012345678901234567890123456ü__________________
in "Minimal" mode. This results in the following log entry
PHP ERROR: htmlspecialchars(): Invalid multibyte sequence in argument
because the ü is broken by substr.

There already is a multibyte-aware version of this function in  
framework/Util/lib/Horde/String.php