Hi, In the last 2-3 weeks I've been working on Haskell indentation inside Emacs. I had some annoyances for a long time and fixed some of them. The new mode is called hi2, it's heavily based on the current haskell-indentation (part of haskell-mode). The changes are mainly to the UI, although, I plan to have a look on the parser too. The code can be found on github: https://github.com/errge/hi2. Feel free to send me feedback, bug reports, pull requests, etc. It's also hosted on MELPA. The most notable changes so far are the following: - DEL and C-d is not mapped: if you want to indent backwards, you can use S-TAB. This means no random jumping on backspace anymore. - TAB steps to the right as before, but when the end is reached, it starts going to the left instead of wrapping around. - TAB stays inside the code, instead of going to the beginning of the line. As in pyhton-mode and perl-mode. - Region indentation common case is supported: TAB and S-TAB is simply moving the whole region to the left/right by 1-column. Can be pressed repeatedly. - The current indentations are shown as underscores in the current line. So you have some visual indication on what's gonna happen. Also useful while hacking on the parser and want to see the results. Can be turned off by setting hi2-show-indentations to nil in your init file or calling hi2-disable-show-indentations from the buffer. If there are collisions with other overlay hacking modes (e.g. fill-column-indicator), try to turn off hi2-show-indentations-after-eol. - The buffer is not changed when indentation is not changed (so there are no undo points created and no dirty flag in the buffer if pressing TAB had no effect). - The code for all this is somewhat commented and cleaned. I'm not trying to fork haskell-mode, it's maintained very actively on github and the maintainers were always friendly through code reviews. But the current haskell-indentation-mode required so many fixes that it became unpleasant to contribute patch-by-patch, I wanted to move fast. When (and if) hi2 gets stable and better in every respect than haskell-indentation-mode, I'm happy to merge and contribute it back. Gergely