I've been recently learning cmake and I want to use the command configure_file to generate .cpp file because I need dynamic values created from cmake variables in my source files. However, it seems that VSCode doesn't recognize the extension .cpp.in, therefore the editor doesn't show any autosuggestion or highlight. But VSCode still recognizes the extension .h.in and shows perfectly autosuggestion and highlight. Can someone suggest a way to make VSCode to recognize the extension .cpp.in? Thank a lot :)