> The only reason somebody would want both #1 and #2 is if they put tabs and spaces into the same document. That's a terrible idea.

I’m not sure if the GP is asking for what you seem to be referring to. I thought of that request as the keys should insert the characters they stand for. Are you thinking only about multiple spaces used instead of a tab? Spaces are routinely used to increase readability in code. Even something as simple as comparisons in loops are more readable with spaces around the symbols. There are many other cases where spaces are used as spaces.