original_string: protected function split($string, $config, $context)
      {
          // OPTIMIZABLE!
          // do the preg_match, capture all subpatterns for reformulation
  
          // we don't support U+00A1 and up codepoints or
          // escaping because I don't know how to do that with regexps
          // and plus it would complicate optimization efforts (you never
          // see that anyway).
          $pattern = '/(?:(?<=\s)|\A)' . // look behind for space or string start
              '((?:--|-?[A-Za-z_])[A-Za-z_\-0-9]*)' .
              '(?:(?=\s)|\z)/'; // look ahead for space or string end
          preg_match_all($pattern, $string, $matches);
          return $matches[1];
      }
code: protected function split($string, $config, $context)
      {
          // OPTIMIZABLE!
          // do the preg_match, capture all subpatterns for reformulation
  
          // we don't support U+00A1 and up codepoints or
          // escaping because I don't know how to do that with regexps
          // and plus it would complicate optimization efforts (you never
          // see that anyway).
          $pattern = '/(?:(?<=\s)|\A)' . // look behind for space or string start
              '((?:--|-?[A-Za-z_])[A-Za-z_\-0-9]*)' .
              '(?:(?=\s)|\z)/'; // look ahead for space or string end
          preg_match_all($pattern, $string, $matches);
          return $matches[1];
      }
code_tokens: protected function split ( $ string , $ config , $ context ) { // OPTIMIZABLE! // do the preg_match, capture all subpatterns for reformulation // we don't support U+00A1 and up codepoints or // escaping because I don't know how to do that with regexps // and plus it would complicate optimization efforts (you never // see that anyway). $ pattern = '/(?:(?<=\s)|\A)' . // look behind for space or string start '((?:--|-?[A-Za-z_])[A-Za-z_\-0-9]*)' . '(?:(?=\s)|\z)/' ; // look ahead for space or string end preg_match_all ( $ pattern , $ string , $ matches ) ; return $ matches [ 1 ] ; }
docstring: Splits a space separated list of tokens into its constituent parts.
  @param string $string
  @param HTMLPurifier_Config $config
  @param HTMLPurifier_Context $context
  @return array
docstring_tokens: Splits a space separated list of tokens into its constituent parts .