Add upstream

wp-content/plugins/jetpack/modules/shortcodes/js/gist.js

@@ -0,0 +1,27 @@
+( function( $, undefined ) {
+	var gistStylesheetLoaded = false,
+		gistEmbed = function() {
+			$( '.gist-oembed' ).each( function( i, el ) {
+				var url = 'https://gist.github.com/' + $( el ).data( 'gist' );
+
+				$.ajax( {
+					url: url,
+					dataType: 'jsonp',
+				} ).done( function( response ) {
+					$( el ).replaceWith( response.div );
+
+					if ( ! gistStylesheetLoaded ) {
+						var stylesheet =
+							'<link rel="stylesheet" href="' + response.stylesheet + '" type="text/css" />';
+
+						$( 'head' ).append( stylesheet );
+
+						gistStylesheetLoaded = true;
+					}
+				} );
+			} );
+		};
+
+	$( document ).ready( gistEmbed );
+	$( 'body' ).on( 'post-load', gistEmbed );
+} )( jQuery );