Why aren tabs allowed in .xwt files?
Jamie Zawinski explains it better than I can. He also includes instructions for getting emacs and vi to output four spaces (instead of a tab) when you press the “tab” key. Basically it comes down to two things: There is nothing you can do with tabs that you can’t do with spaces, and sequences like [tab][space][space][space][space][tab] get interpreted differently when viewed through different editors. The only way to make sure that everybody sees the same thing is to mandate that tabs never appear in files.
