markdown.coffee

fetch = ->
  Git.readFile version, Path.join('articles', "#{name}.markdown"), preprocess

preprocess = (err, markdown) ->
  return finish err if err
  props = preProcessMarkdown markdown
  finish Data.author version, props.author if props.author
  finish {}

finish = (err, author) ->
  return callback err if err
  props.name = name
  props.version = version if version isnt 'fs'
  props.author = author
  callback props

fetch()

original.js

Step(
  function getArticleMarkdown() {
    Git.readFile(version, Path.join("articles", name + ".markdown"), this);
  },
  function (err, markdown) {
    if (err) { callback(err); return; }
    props = preProcessMarkdown(markdown);
    if (props.author) {
      Data.author(version, props.author, this);
    } else {
      return {};
    }
  },
  function finish(err, author) {
    if (err) { callback(err); return; }
    props.name = name;
    if (version !== 'fs') {
      props.version = version;
    }
    props.author = author;
    return props;
  },
  callback
);