Unable to override config via `mcconfig`

[eliandoran]

Build environment: Windows
Moddable SDK version: If you are unsure, display it in the terminal using: 7.1.0-2-ge483dc6bf
Target device: Desktop simulator

Description

Steps to Reproduce

1. Define in manifest.json:

  "config": {
    "startUrl": "/"
  },

2. In the app:

import config from "mc/config";
trace("URL: ", config.startUrl);

3. Run mcconfig -d -m -p sim --startUrl="/settings" (or mcconfig -d -m -p sim --startUrl-=/settings)

Notice how start URL is the one from the config (/) instead of the overridden one.

Expected behavior

According to documentation for mcconfig, I can override the config arguments:

config arguments specified in the form of key-=value or key="value". These are merged into the config section of the manifest. Import the mc/config module to access them

So in this case the log should be URL: /settings instead of /.

Images
Screenshots or photos to help explain the problem

Other information

• If the config doesn't exist in the first place and I try to override it, it comes out undefined.
• Bonus issue: mcconfig -d -m -p sim --startUrl="/settings?page=foo" results in ### Error: '--startUrl=/settings?page=foo': manifest not found!.