code: function replaceSensitive(chr, dbl) {
  
  		var result,
  		    dbl_result;
  
  		if (typeof baseDiacriticsMap[chr] === 'undefined') {
  			return chr;
  		}
  
  		result = '[' + chr
  		result += baseDiacriticsMap[chr];
  		result += ']';
  
  		if (dbl && baseDiacriticsMap[dbl]) {
  			dbl_result = baseDiacriticsMap[dbl];
  
  			// Make the previous group optional,
  			// but do require one of these groups then
  			result = '?(?:' + result + '|[' + dbl_result + '])';
  		}
  
  		return result;
  	}
docs: Replace the given character, but remain case sensitive
  
  @author   Jelle De Loecker   <jelle@develry.be>
  @since    0.0.1
  @version  0.6.4