function encode (obj, opt) {
  var children = []
  var out = ''

  if (typeof opt === 'string') {
    opt = {
      section: opt,
      whitespace: false
    }
  } else {
    opt = opt || {}
    opt.whitespace = opt.whitespace === true
  }

  var separator = opt.whitespace ? ' = ' : '='

  Object.keys(obj).forEach(function (k, _, __) {
    var val = obj[k]
    if (val && Array.isArray(val)) {
      val.forEach(function (item) {
        out += safe(k + '[]') + separator + safe(item) + '\n'
      })
    } else if (val && typeof val === 'object') {
      children.push(k)
    } else {
      out += safe(k) + separator + safe(val) + eol
    }
  })

  if (opt.section && out.length) {
    out = '[' + safe(opt.section) + ']' + eol + out
  }

  children.forEach(function (k, _, __) {
    var nk = dotSplit(k).join('\\.')
    var section = (opt.section ? opt.section + '.' : '') + nk
    var child = encode(obj[k], {
      section: section,
      whitespace: opt.whitespace
    })
    if (out.length && child.length) {
      out += eol
    }
    out += child
  })

  return out
}
Asian double or multi-byte - charsets.
Match is determined mostly by the input data adhering to the
encoding scheme for the charset, and, optionally,
frequency-of-occurence of characters.