How to reference a gist stylesheet in another gist?

gistpreview.github.io loads the html with Javascript by using the Github Gist API. From the source code it just writes the html content. So, it doesn't deal with relative links that may link to other css files.

You would need to :

• fork the gistpreview project
• after the html rendering (document.write), iterate over the link tags and check if they are present in the files field of the API result
• load the css content dynamically if matching

I've tested this method above using this fork.

Example for you gist: https://bertrandmartel.github.io/gistpreview.github.io/?943286be35fd690f499d59534281a6c5

Code before :

var content = info.files[fileName].content;
document.write(content);

Code after :

var content = info.files[fileName].content;
document.write(content);

//load links
var links = document.querySelectorAll("link");
for (let [key, value] of Object.entries(info.files)) {
  for (var i = 0; i < links.length; i++) {
    var href = links[i].getAttribute("href").replace(/^\/|\/$/g, '');
    if (value.filename === href && value.type === "text/css") {
      console.log("load file " + value.filename);
      var style = document.createElement('style');
      style.type = 'text/css';
      style.innerHTML = value.content;
      document.getElementsByTagName('head')[0].appendChild(style);
    }
  }
}