If you read any coding style guide, there is a big chance you will see a recommendation on using spaces instead of tabs for indentation. Some guides explicitly say: never use tabs.
I know that there is a risk of starting a nuclear war about tabs vs spaces. It is surely not what I intend. What I do intend, however, is to ask you if there is any good reason for this recommendation. Why does everybody keep saying that spaces are the best way to indent code?