Vim: OCaml bindings, disallow arrows

files/.vimrc

@@ -12,6 +12,7 @@ set smartindent
 set incsearch
 set ttimeoutlen=100
 set scrolloff=5
+set tw=79
 
 set exrc
 set secure
@@ -74,7 +75,6 @@ let g:syntastic_ocaml_checkers = ['merlin']
 """" Ocp-indent (OCaml indentation)
 set rtp^=g:opamshare."/ocp-indent/vim"
 
-
 """"""""""""""""" Trailing whitespaces
 fun! TrimWhitespace()
     let l:save_cursor = getpos('.')
@@ -99,3 +99,9 @@ nnoremap K <Esc>i<CR><Esc>
 xnoremap <Leader>x <esc>:'<,'>:w !xclip -selection clipboard<CR><esc>
 
 set tw=79
+
+" Disable arrow keys - use hjkl, ffs.
+noremap <Up> <NOP>
+noremap <Down> <NOP>
+noremap <Left> <NOP>
+noremap <Right> <NOP>