text: 'use strict'
  
  module.exports = revert
  
  var u = require('unist-builder')
  var all = require('./all')
  
  /* Return the content of a reference without definition as markdown. */
  function revert(h, node) {
    var subtype = node.referenceType
    var suffix = ']'
    var contents
    var head
    var tail
  
    if (subtype === 'collapsed') {
      suffix += '[]'
    } else if (subtype === 'full') {
      suffix += '[' + node.identifier + ']'
    }
  
    if (node.type === 'imageReference') {
      return u('text', '![' + node.alt + suffix)
    }
  
    contents = all(h, node)
    head = contents[0]
  
    if (head && head.type === 'text') {
      head.value = '[' + head.value
    } else {
      contents.unshift(u('text', '['))
    }
  
    tail = contents[contents.length - 1]
  
    if (tail && tail.type === 'text') {
      tail.value += suffix
    } else {
      contents.push(u('text', suffix))
    }
  
    return contents
  }
  