Code Duplication    Length = 4-4 lines in 2 locations

src/SwiftTwigMailTemplate.php 2 locations

@@ 291-294 (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();
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        $len = array();
@@ 335-338 (lines=4) @@
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        /**///finalize keep tag
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        if (isset($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);