将文本拆分为相等长度的字符串,保持字不变

我有这个代码,将较长的行分成等长字符串的数组保持单词,它也考虑到格式化[[u;#fff;]some text],它分割文本,因此每个字符串可以独立转换为HTML:

var format_re = /\[\[([!gbiuso]*;[^;\]]*;[^;\]]*(?:;|[^\]()]*);?[^\]]*)\]([^\]]*\\\][^\]]*|[^\]]*|[^\[]*\[[^\]]*)\]?/gi;
var format_begin_re = /(\[\[[!gbiuso]*;[^;]*;[^\]]*\])/i;
var format_last_re = /\[\[[!gbiuso]*;[^;]*;[^\]]*\]?$/i;
$.terminal.split_equal = function(str, length, words) {
  var formatting = false;
  var in_text = false;
  var prev_format = '';
  var result = [];
  // add format text as 5th paramter to formatting it's used for
  // data attribute in format function
  var array = str.replace(format_re, function(_, format, text) {
    var semicolons = format.match(/;/g).length;
    // missing semicolons
    if (semicolons == 2) {
      semicolons = ';;';
    } else if (semicolons == 3) {
      semicolons = ';';
    } else {
      semicolons = '';
    }
    // return '[[' + format + ']' + text + ']';
    // closing braket will break formatting so we need to escape
    // those using html entity equvalent
    return '[[' + format + semicolons +
      text.replace(/\\\]/g, ']').replace(/\n/g, '\\n') + ']' +
      text + ']';
  }).split(/\n/g);
  for (var i = 0, len = array.length; i < len; ++i) {
    if (array[i] === '') {
      result.push('');
      continue;
    }
    var line = array[i];
    var first_index = 0;
    var count = 0;
    var space = -1;
    for (var j=0, jlen=line.length; j' + after + '').text();
        var can_break = text.match(/\s/);
        if (words && space != -1 && j !== jlen-1 && can_break) {
          // get text to last space
          output = line.substring(first_index, space);
          j = space-1;
          space = -1;
        } else {
          output = line.substring(first_index, j+1);
        }
        if (words) {
          output = output.replace(/^( |\s)+|( |\s)+$/g, '');
        }
        first_index = j+1;
        count = 0;
        if (prev_format) {
          output = prev_format + output;
          if (output.match(']')) {
            prev_format = '';
          }
        }
        // Fix output if formatting not closed
        var matched = output.match(format_re);
        if (matched) {
          var last = matched[matched.length-1];
          if (last[last.length-1] !== ']') {
            prev_format = last.match(format_begin_re)[1];
            output += ']';
          } else if (output.match(format_last_re)) {
            var line_len = output.length;
            // why this line ???
            //var f_len = line_len-last[last.length-1].length;
            output = output.replace(format_last_re, '');
            prev_format = last.match(format_begin_re)[1];
          }
        }
        result.push(output);
      }
    }
  }
  return result;
};

is cracker.The term

in_text = false;

if (is_space() && ((formatting && in_text) || !formatting || (line[j] === '[' && line[j+1] === '['))) {