use special content-type instead of 208 status code

node_modules/vfs-http-adapter/restful.js

@@ -22,12 +22,12 @@ module.exports = function setup(mount, vfs, mountOptions) {
         else if (typeof err.code == "number" && isValidStatusCode(err.code)) res.statusCode = err.code;
         else if (err.code === "EBADREQUEST") res.statusCode = 400;
         else if (err.code === "EACCES") res.statusCode = 403;
-        else if (err.code === "ENOENT") res.statusCode = 208;
+        else if (err.code === "ENOENT") res.statusCode = 200;
         else if (err.code === "ENOTREADY") res.statusCode = 503;
         else if (err.code === "EISDIR") res.statusCode = 503;
         else res.statusCode = 500;
         var message = (err.message || err.toString()) + "\n";
-        res.setHeader("Content-Type", "text/plain");
+        res.setHeader("Content-Type", "text/x-error");
         res.setHeader("Content-Length", Buffer.byteLength(message));
         res.end(message);
     };

plugins/c9.core/http-xhr.js

@@ -119,7 +119,7 @@ define(function(require, module, exports) {
                     }
                 }
                 
-                if (xhr.status > 299 || xhr.status == 208) {
+                if (xhr.status > 299 || res.headers["content-type"] == "text/x-error") {
                     var err = new Error(xhr.responseText);
                     err.code = xhr.status;
                     if (debug && xhr.status > 299)