code: function parseLine(line, options, dict) {
    var word
    var codes
    var result
    var hashOffset
    var slashOffset
  
    // Find offsets.
    slashOffset = line.indexOf(slash)
    while (slashOffset !== -1 && line.charAt(slashOffset - 1) === backslash) {
      line = line.slice(0, slashOffset - 1) + line.slice(slashOffset)
      slashOffset = line.indexOf(slash, slashOffset)
    }
  
    hashOffset = line.indexOf(numberSign)
  
    // Handle hash and slash offsets.  Note that hash can be a valid flag, so we
    // should not just discard all string after it.
    if (hashOffset >= 0) {
      if (slashOffset >= 0 && slashOffset < hashOffset) {
        word = line.slice(0, slashOffset)
        whiteSpaceExpression.lastIndex = slashOffset + 1
        result = whiteSpaceExpression.exec(line)
        codes = line.slice(slashOffset + 1, result ? result.index : undefined)
      } else {
        word = line.slice(0, hashOffset)
      }
    } else if (slashOffset >= 0) {
      word = line.slice(0, slashOffset)
      codes = line.slice(slashOffset + 1)
    } else {
      word = line
    }
  
    word = trim(word)
    if (word) {
      codes = parseCodes(options.flags, codes && trim(codes))
      add(dict, word, codes, options)
    }
  }
docs: Parse a line in dictionary.