I’ll overlook your poor choice in editors. :-) The rest of this is spot on. Yea, that’s bad. A project like that screams for a code formatter to be plumbed into a pre-commit hook. Like you say, I’ve never really found a great argument for tabs either, and with more and more indentation-sensitive languages, any argument to the effect that programmers can choose their own indentation really goes out the window. These days, I program in Clojure with Emacs’s aggressive-indent-mode minor mode. It re-indents the whole top-level function you’re working in every time you pause typing. It keep everything properly indented pretty much all the time. Sometimes your commit diffs will be larger, though.