A pal and I have worked on several "Terminal Applications" together and exchange code via Github. He writes using Visual Studio Code but I am sticking with XCode (because I don't want to spend time learning another IDE, just time writing). XCode 11.3.1 by the way.
I usually start applications and load them onto Github, this time he started one and loaded it there. I always have an option to open with XCode under the very green Code button. But when he starts an application with VSC, that option is not there.