Implemented to post as my GitHub account.

Gist.scrippet/Contents/Resources/gist.css

@@ -0,0 +1,7 @@
+p.input label,
+p.input input { margin:0; float:left; display:block; }
+p.input label { width:9em; text-align:right; }
+p.input input { width:15em; text-align:left; }
+
+p.input { height:2.5em; clear:both; margin:0; }
+

Gist.scrippet/Contents/Resources/gist.rb

@@ -1,21 +1,52 @@
-require 'rexml/document'
-require 'net/http'
+require 'net/https'
 require 'uri'
 
-url = URI.parse('http://gist.github.com/api/v1/xml/new')
+url = URI.parse('https://gist.github.com/gists')
 
 
-name = ENV['SNIPPET_NAME']
+name = ENV['SNIPPET_EXPORT_FILENAME']
+
 puts "Uploading: #{name}"
 
+ext = ENV['SNIPPET_EXTENTION']
+description = ENV['SNIPPET_NAME']
+login = ENV['GIST_LOGIN']
+token = ENV['GIST_API_TOKEN']
+prv = ENV['GIST_IS_PRIVATE'] == '1'
 snippet = ENV['SNIPPET_SOURCE_CODE']
 
-response = Net::HTTP.post_form(url, 'files[file1.ab]' => snippet)
+http = Net::HTTP.new(url.host, url.port)
+http.use_ssl = true
+http.verify_mode = OpenSSL::SSL::VERIFY_PEER
+req = Net::HTTP::Post.new(url.path)
+
+data = {
+    'description' => description,
+    'file_ext[gistfile1]' => ext,
+    'file_name[gistfile1]' => name,
+    'file_contents[gistfile1]' => snippet
+}
+
+if prv
+    data = data.merge({ 'action_button' => 'private' })
+end
+
+if login != ''
+    data = data.merge({
+      :login => login,
+      :token => token
+    })
+
+end
+
+req.form_data = data
+
+snippet_url = http.start{|h| h.request(req) }['Location']
 
-doc = REXML::Document.new(response.body)
-gist = REXML::XPath.first(doc, "/gists/gist/repo/text()")
+unless snippet_url
+    raise "Failed to upload snippet: " << name
+end
 
-snippet_url = "http://gist.github.com/#{gist}"
 puts "Snippet is successfully uploaded at #{snippet_url}"
 
 ENV['GIST_SNIPPET_URL'] = snippet_url

Gist.scrippet/Contents/Resources/input.html

@@ -5,28 +5,118 @@
     <title>Input</title>
     <meta name="author" content="Simon Schoeters">
     <link href="default.css" rel="stylesheet" type="text/css">
+    <link href="gist.css" rel="stylesheet" type="text/css">
     <script type="text/javascript" charset="utf-8" src="Scrippet.js"></script>
     <script type="text/javascript" charset="utf-8">
+
+      var
+        inputApiToken = null,
+        inputLogin = null,
+        checkPrivate = null,
+        paraConfirmation = null,
+        recentAPIKey = null,
+        login = null,
+        token = null,
+        prv = false;
+
       Scrippet.onInitialize = function (scrippet) {
-        // Setup HTML content according to the number of snippets
-        var snippets = Scrippet.getSnippets();
-        var confirmation = snippets.length > 1
-          ? "You are about to export " + snippets.length + " snippets as public <a href='http://gist.github.com'>GitHub</a> gists."
-          : "You are about to export ‘" + snippets[0].getName() + "’ as a public <a href='http://gist.github.com'>GitHub</a> gist.";
-          document.getElementById("confirmation").innerHTML = confirmation;
+        // Restore data
+        inputApiToken = document.getElementById("api-token");
+        inputLogin = document.getElementById("login");
+        checkPrivate = document.getElementById("is-private");
+        paraConfirmation = document.getElementById("confirmation");
+
+        inputApiToken.value = Scrippet.loadPersistentItem("GIST_API_TOKEN") || "";
+        inputLogin.value = Scrippet.loadPersistentItem("GIST_LOGIN") || "";
+        checkPrivate.checked = Scrippet.loadPersistentItem("GIST_IS_PRIVATE") == "1";
+
+        //
+        validateLogin();
+        update();
       };
       Scrippet.onFinalize = function (scrippet) {
+
+        // Store data
+        Scrippet.storePersistentItem("GIST_API_TOKEN", getApiToken());
+        Scrippet.storePersistentItem("GIST_LOGIN", getLogin());
+        Scrippet.storePersistentItem("GIST_IS_PRIVATE", isPrivate()?"1":"");
+
         // Provide separate environment variable for every snippet
         var snippets = Scrippet.getSnippets();
         for (var i = 0; i < snippets.length; i++) {
+          snippets[i].setProperty("SNIPPET_EXTENTION", "." + snippets[i].getExportFilename().split(".").pop() );
           snippets[i].setProperty("GIST_SNIPPET_URL", null);
         }
+
+        Scrippet.setProperty("GIST_API_TOKEN", token);
+        Scrippet.setProperty("GIST_LOGIN", login);
+        Scrippet.setProperty("GIST_IS_PRIVATE", prv?"1":"");
+
       };
+
+      function update() {
+        // Setup HTML content according to the number of snippets
+        var snippets = Scrippet.getSnippets();
+        var multiple = snippets.length > 1;
+        var confirmation = "You are about to export " +
+            ( multiple ?
+                ( snippets.length + " snippets" ) :
+                snippets[0].getExportFilename()
+            ) +
+            ( multiple ? "s" : "" ) +
+            " as " +
+            ( prv ? "private" : "public" ) +
+            " <a href='http://gist.github.com'>GitHub</a> gist" + 
+            ( multiple ? "s" : "" ) +
+            ".";
+
+          paraConfirmation.innerHTML = confirmation;
+      }
+
+      function isPrivate() { return checkPrivate.checked; }
+      function getApiToken() { return inputApiToken.value; }
+      function getLogin() { return inputLogin.value; }
+
+      function validateLogin() {
+        var
+            valid = false,
+            newPrv = isPrivate(),
+            newToken = getApiToken(),
+            newLogin = getLogin();
+
+        if( newPrv != prv || newToken != token || newLogin != login ) {
+            prv = newPrv;
+            token = newToken;
+            login = newLogin;
+            valid =
+                ( !login && !token ) ||
+                ( /^[a-f\d]{32}$/.test(token) && /^[0-9a-z\-]+$/i.test(login) );
+
+            Scrippet.setDefaultButtonEnabled(valid);
+        }
+        setTimeout(validateLogin, 200);
+      }
+
     </script>
   </head>
   <body>
     <div class="center-aligned slightly-padded">
       <p class="general-information" id="confirmation"></p>
+      <p class="input">
+        <label for="login">Login:&nbsp;</label>
+        <input id="login" onKeyPress="if (event.keyCode == 13) Scrippet.clickDefaultButton()" type="text"/>
+      </p>
+      <p class="input">
+        <label for="api-token"><a href="http://github.com/account#admin_bucket">API Token</a>:&nbsp;</label>
+        <input id="api-token" onKeyPress="if (event.keyCode == 13) Scrippet.clickDefaultButton()" maxlength="32" type="text"/>
+      </p>
+      <p class="check">
+        <label for="is-private">
+            <input id="is-private" type="checkbox" onClick="update();" />
+            Private gist
+        </label>
+      </p>
+      <p>Leave Login and API Token blank to post as anonymous.</p>
     </div>
   </body>
 </html>

Gist.scrippet/Contents/Resources/output.html

@@ -18,7 +18,8 @@
       var clipboardContents = "";
       for (var i = 0; i < snippets.length; i++) {
         var snippet = snippets[i];
-        var URL = snippet.getProperty("GIST_SNIPPET_URL");
+        var URL = ( snippet.getProperty("GIST_SNIPPET_URL") || "" ).replace(/^https/,"http");
+
         var name = snippet.getName();
         var link = "<li><img src=\"copy.png\" style=\"cursor:pointer;\" " + "title=\"Copy into Clipboard\" onclick=\"copyURL('" + URL + "', '" + name + "');\"/>&nbsp;&nbsp;<a href='" + URL + "'>" + name + "</a></li>";
         listContents = listContents + link;