Visual Studio (not Code) handles it quite nicely. If you hit tab and it replaces it with 4 spaces, then you backspace, it removes the 4 spaces as if they were a

Visual Studio (not Code) handles it quite nicely. If you hit tab and it replaces it with 4 spaces, then you backspace, it removes the 4 spaces as if they were a tab. So it saves with spaces, but treats them like tabs.