Update to recommended changes

modules/shortcodes/gist.php

@@ -201,21 +201,29 @@ class_exists( 'Jetpack_AMP_Support' )
 	}
 
 	// URL points to the entire gist, including the file name if there was one.
-	$id = ( ! empty( $file ) ? $id . '?file=' . $file : $id );
+	$id     = ( ! empty( $file ) ? $id . '?file=' . $file : $id );
 	$return = false;
 
-	$request      = wp_remote_get( "https://gist.github.com/" . esc_attr( $id ) );
+	$request      = wp_remote_get( esc_url_raw( 'https://gist.github.com/' . esc_attr( $id ) ) );
 	$request_code = wp_remote_retrieve_response_code( $request );
 
 	if ( 200 === $request_code ) {
 		$request_body = wp_remote_retrieve_body( $request );
 		$request_data = json_decode( $request_body );
 
-		wp_enqueue_style( 'jetpack-gist-styling', $request_data->stylesheet );
+		wp_enqueue_style( 'jetpack-gist-styling', esc_url( $request_data->stylesheet ), array(), JETPACK__VERSION );
 
 		$gist = substr_replace( $request_data->div, sprintf( 'style="tab-size: %1$s" ', absint( $tab_size ) ), 5, 0 );
 
-		// inline style to prevent the bottom margin to the embed that themes like TwentyTen, et al., add to tables.
+		// Add inline styles for the tab style in the opening div of the gist.
+		$gist = preg_replace(
+			'#(\<div\s)+(id=\"gist[0-9]+\")+(\sclass=\"gist\"\>)?#',
+			sprintf( '$1style="tab-size: %1$s" $2$3', absint( $tab_size ) ),
+			$request_data->div,
+			1
+		);
+
+		// Add inline style to prevent the bottom margin to the embed that themes like TwentyTen, et al., add to tables.
 		$return = sprintf( '<style>.gist table { margin-bottom: 0; }</style>%1$s', $gist );
 	}