Typing Literal Tab Characters
I do not know how feasible this is, for the developers, but I do believe, that at least on this site, it may make more sense to stop expanding tabs into four spaces.
If the browser side code can be made to render tabs as four spaces, this issue is moot. Some code golf answers (or input samples) require a literal tab in the source and there should be a way to indicate that.
I am not a web developer, so I may be clueless, but I will put this up for a feature request and take any flak downvotes.
This is not intended to incite any tabs versus space wars.
Wow! This post seems to have garnered a significant community consensus. As such, I have put this up for a network wide feature request here!