Set up files like this and you can use ANY editor.
The only thing for which I use the IDE is to run the serial monitor. If it was a separate program I wouldn't need the IDE at all.
Don't know why the developers waste their time on this poor piece of work
The serial monitor can be replaced by any serial terminal program, just connect to /dev/ttyUSBx or whatever that port is called in your excuse of an operating system. No need for the IDE either.
I use the IDE just to press the compile-and-run button and the serial monitor and I don't think it wastes my time. If you meant the developer of the IDE wasting their time, they provide a decent alternative for people intimated by an editor, people who would use notepad.exe instead or people who think make is just a magazine and gnu is sold as unspecified venison in the supermarket. Which describes a sizeable part of the Arduino community.
So please show a little tolerance and let people enjoying the IDE have their fun.
Korman