Have anyone could look into this bug already?

Not yet, and I haven't been working on this plugin as much, as I've been focused on getting wp-gistpen out the door.

Do the additions made by @litefeel in https://github.com/litefeel/wp-github-sync-meta would be included in your plugin directly if you fill this issue ?
Sorry, I cannot really help in development, but I am using your plugin and try to find out if I can continue to use it considering you still do not have help to maintain it.

@statnmap I'm open to adding those things, yeah. I pinged him previously to see if he wanted to combine efforts here but I haven't heard from him.

FWIW, I have this plugin installed on my site and continue to use it without issue, so it should still work, even if I'm not actively maintaining it.

Thanks. It also work on my website. My concern is more a security issue. I wouldn't like having an open gate.

@statnmap I actually misread the link and thought you were pointing here: https://github.com/litefeel/writing-on-github

Regardless, that plugin seems mostly fine, although I think the inclusion of this filter is very odd and doesn't really belong in the plugin. But you could easily copy that plugin code into your own site and do with it what you want.