code: function splitLongWord(word, options) {
    var wrapCharacters = options.longWordSplit.wrapCharacters || [];
    var forceWrapOnLimit = options.longWordSplit.forceWrapOnLimit || false;
    var max = options.wordwrap;
  
    var fuseWord = [];
    var idx = 0;
    while (word.length > max) {
      var firstLine = word.substr(0, max);
      var remainingChars = word.substr(max);
  
      var splitIndex = firstLine.lastIndexOf(wrapCharacters[idx]);
  
      if (splitIndex > -1) {
        // We've found a character to split on, store before the split then check if we
        // need to split again
        word = firstLine.substr(splitIndex + 1) + remainingChars;
        fuseWord.push(firstLine.substr(0, splitIndex + 1));
      } else {
        idx++;
        if (idx >= wrapCharacters.length) {
          // Cannot split on character, so either split at 'max' or preserve length
          if (forceWrapOnLimit) {
            fuseWord.push(firstLine);
            word = remainingChars;
            if (word.length > max) {
              continue;
            }
          } else {
            word = firstLine + remainingChars;
            if (!options.preserveNewlines) {
              word += '\n';
            }
          }
          break;
        } else {
          word = firstLine + remainingChars;
        }
      }
    }
    fuseWord.push(word);
  
    return fuseWord.join('\n');
  }
docs: Split a long word up to fit within the word wrap limit.  Use either a character to split looking back from the word wrap limit, or truncate to the word wrap limit.