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Decode Special Chars in Product search
If you probably have problems with special chars within the Productsearch during Quote/Invoice Generation, you could do this small modification:
File: modules/Vtiger/actions/BasicAjax.php
Search
$result[] = array('label'=>decode_html($recordModel->getName()), 'value'=>decode_html($recordModel->getName()), 'id'=>$recordModel->getId());
REplace with
$result[] = array('label'=>decode_html(decode_html($recordModel->getName())), 'value'=>decode_html($recordModel->getName()), 'id'=>$recordModel->getId());