Code Duplication    Length = 4-4 lines in 2 locations

src/Mouf/Mail.php 2 locations

@@ 352-355 (lines=4) @@
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        /**///initialize keep tag logic
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        if (strlen($keep) > 0) {
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            $k = explode('|', $keep);
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            for ($i = 0;$i < count($k);$i++) {
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                $s = str_replace('<'.$k[$i], '[{('.$k[$i], $s);
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                $s = str_replace('</'.$k[$i], '[{(/'.$k[$i], $s);
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            }
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        }
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        $pos = array();
@@ 397-400 (lines=4) @@
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        /**///finalize keep tag
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        if (isset($k)) {
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            for ($i = 0;$i < count($k);$i++) {
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                $s = str_replace('[{('.$k[$i], '<'.$k[$i], $s);
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                $s = str_replace('[{(/'.$k[$i], '</'.$k[$i], $s);
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            }
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        }
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        return trim($s);