> But yes, over all, too many people will get tabs wrong that standardising on spaces - inferior as they are - is the only option.
Tab indentation was invented to illustrate "The perfect is the enemy of the good".
Let everyone have his own indentation taste from the same source? Great idea on paper. Falls apart on a regular basis. Because it's not compatible with lining up across lines, because it's not compatible with a max width, etc. And because people are only human and will not be disciplined enough.