What I use is here: http://philh.net/smart-tab.el http://philh.net/smart-tab.el Which is a (very slightly) modified version of what I foud here: http://bytes.i

What I use is here: http://philh.net/smart-tab.el http://philh.net/smart-tab.el Which is a (very slightly) modified version of what I foud here: http://bytes.inso.cc/wp/2009/01/07/dot-emacs-smarter-indentation-with-tabs-and-spaces/ http://bytes.inso.cc/wp/2009/01/07/dot-emacs-smarter-indenta... This seems to be a more language-agnostic approach: http://www.emacswiki.org/emacs/SmartTabs http://www.emacswiki.org/emacs/SmartTabs