- '[LRM]' => "\xE2\x80\x8E",
- '[RLM]' => "\xE2\x80\x8F",
- '[LRE]' => "\xE2\x80\xAA",
- '[RLE]' => "\xE2\x80\xAB",
- '[POP]' => "\xE2\x80\xAC",
- '[LRO]' => "\xE2\x80\xAD",
- '[RLO]' => "\xE2\x80\xAB",
- '[ZWSP]' => "\xE2\x80\x8B",
- '[NBSP]' => "\xC2\xA0",
- '[WJ]' => "\xE2\x81\xA0",
- '[BOM]' => "\xEF\xBB\xBF",
- '[FFFD]' => "\xEF\xBF\xBD",
+ '[LRM]' => "\u{200E}",
+ '[RLM]' => "\u{200F}",
+ '[LRE]' => "\u{202A}",
+ '[RLE]' => "\u{202B}",
+ '[POP]' => "\u{202C}",
+ '[LRO]' => "\u{202D}",
+ '[RLO]' => "\u{202B}",
+ '[ZWSP]' => "\u{200B}",
+ '[NBSP]' => "\u{00A0}",
+ '[WJ]' => "\u{2060}",
+ '[BOM]' => "\u{FEFF}",
+ '[FFFD]' => "\u{FFFD}",