> - Your language has #ifdef or equivalent syntax which does conditional compilation making syntactic tools incomplete.

You need a better IDE.

> - You just opened the project for the first time.

Go grab a coffee

> - It's in a language you don't daily drive

Jetbrains all products pack, baby.

> - You haven't even downloaded the project and are checking things out in github (or some similar site for your project).

On GitHub, press `.` to open it in a web-based vscode. Download it & open it in your IDE while you are doing this.

> - You're remoting via SSH and have access to code there (say it's a python server).

Don't do this. Check the git hash that was deployed and checkout the code locally.