This file is indexed.

/usr/share/php/Horde/Date/Parser/Locale/Pt/Separator.php is in php-horde-date-parser 2.0.6-1ubuntu1.

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The actual contents of the file can be viewed below.

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<?php
class Horde_Date_Parser_Locale_Pt_Separator extends Horde_Date_Parser_Locale_Base_Separator
{

    public $commaScanner = array(
        '/^,$/' => 'comma',
    );

    public $slashOrDashScanner = array(
        '/^-$/' => 'dash',
        '/^\/$/' => 'slash',
    );

    public $atScanner = array(
        '/^(em|@|de)$/' => 'at',
		'/^(as|ao)$/' => 'at',
		'/^(at|@)$/' => 'at',
    );


    public $inScanner = array(
        '/^no$/' => 'in',
		'/^in$/' => 'in',
    );

    public function scan($tokens)
    {
        foreach ($tokens as &$token) {
            if ($t = $this->scanForCommas($token)) {
                $token->tag('separator_comma', $t);
            } elseif ($t = $this->scanForSlashOrDash($token)) {
                $token->tag('separator_slash_or_dash', $t);
            } elseif ($t = $this->scanForAt($token)) {
                $token->tag('separator_at', $t);
            } elseif ($t = $this->scanForIn($token)) {
                $token->tag('separator_in', $t);
            }
        }
        return $tokens;
    }

    public function scanForCommas($token)
    {
        foreach ($this->commaScanner as $scannerItem => $scannerTag) {
            if (preg_match($scannerItem, $token->word)) {
                return $scannerTag;
            }
        }
    }

    public function scanForSlashOrDash($token)
    {
        foreach ($this->slashOrDashScanner as $scannerItem => $scannerTag) {
            if (preg_match($scannerItem, $token->word)) {
                return $scannerTag;
            }
        }
    }

    public function scanForAt($token)
    {
        foreach ($this->atScanner as $scannerItem => $scannerTag) {
            if (preg_match($scannerItem, $token->word)) {
                return $scannerTag;
            }
        }
    }

    public function scanForIn($token)
    {
        foreach ($this->inScanner as $scannerItem => $scannerTag) {
            if (preg_match($scannerItem, $token->word)) {
                return $scannerTag;
            }
        }
    }
}