Evil incompatibility

[ian-mi]

When using evil + shm with minimal configuration, most of shm does not appear to work correctly. For example if I write

f = foo bar

and I move my cursor so that bar is the current node and type C-j in order to make a new sibling, bar is split at the cursor position, for example

f = foo b
ar

Is it possible to configure evil to work with shm?

edit: github ate my whitespace here, but ar should be aligned with b.

edit: My .emacs config:
(require 'evil)
(require 'shm)

(evil-mode 1)

(add-hook 'haskell-mode-hook 'structured-haskell-mode)

[chrisdone]

No idea. Maybe an evil user following the repo knows.

[phenguin]

I've managed to get evil and shm working together in a way that works for me.. but its been a while since I set it up so I can't give specific advice and I don't have time to dig into it at the moment. Maybe perusing my dotfiles could be helpful to you though. Have to warn you its a bit unorganized however. Heres a link to my haskell configuration:

https://github.com/phenguin/dotfiles/blob/master/emacs.d.linkme/config/lang/haskell-config.el

Relevant keybindings are toward the bottom

[ts468]

@ian-mi, did you have any success in getting shm to work with evil? If so, would you maybe have a minimal example that shows how to set it up?

[EDmitry]

Structured haskell mode works fine in insert mode in evil. You have to add certain key bindings for normal mode though. I am still working on this and will update with more info on this. There is one extremely annoying thing in haskell-mode: evil calls indent-according-to-mode often and it always opens the window asking to set an indentation mode. One way to deal with this is to reimplement every evil function for SHM so that it doesn't call indent-according-to-mode, but that's just an overkill. I wish there was a way to just disable that in haskell-mode itself (haskell/haskell-mode#290)

[srhb]

Is this not a problem with how haskell-mode handles indentation? It seems the whole hook-based-with-warnings system is completely incompatible with the assumptions evil makes (that works for every other package out there)

[EDmitry]

Evil doesn't make any weird assumptions. It just tries to reindent much more often, that's all.

[unhammer]

(setq evil-auto-indent nil) at least gets rid of the warnings, although you then have to press TAB after o. I ended up putting this in my init.el:

(defun evil-shm/open-above (count)
  "Insert a new line above point and switch to Insert state.
The insertion will be repeated COUNT times."
  (interactive "p")
  (back-to-indentation)
  (save-excursion (shm/newline-indent))
  (setq evil-insert-count count
        evil-insert-lines t
        evil-insert-vcount nil)
  (evil-insert-state 1)
  (add-hook 'post-command-hook #'evil-maybe-remove-spaces))

(defun evil-shm/open-below (count)
  "Insert a new line below point and switch to Insert state.
The insertion will be repeated COUNT times."
  (interactive "p")
  (goto-char (line-end-position))
  (shm/newline-indent)
  (setq evil-insert-count count
        evil-insert-lines t
        evil-insert-vcount nil)
  (evil-insert-state 1)
  (add-hook 'post-command-hook #'evil-maybe-remove-spaces))

(evil-define-key 'normal shm-map
               (kbd "O") #'evil-shm/open-above
               (kbd "o") #'evil-shm/open-below)