"You have chosen to open" dialog box
See dialog box screen print below. The .cpp file is not a GIT file. A .cpp file is a C++ program source file from Microsoft Visual Studio, and I should be able to open the file with Visual Studio 2019 (current version of Visual Studio on my PC). But misclassifying the .ccp file as GIT does not give me the option of opening the file with Visual Studio 2019. How do I change the classification of .cpp files from GIT to C++ (I'm on the newest version of Firefox...all prior versions worked correctly) ?