ocaml_stuff.vim

" ### Ocaml
" Get the opam directories:
let opam_prefix_ = system('echo -n "$(opam config var prefix)"')
let opam_prefix = substitute(opam_prefix_,'^\s*\(.\{-}\)\s*$', '\1', '') " This strips the string

" #### merlin
if filereadable(opam_prefix . '/share/ocamlmerlin/vim/doc/merlin.txt')
    exec 'set rtp+=' . opam_prefix . '/share/ocamlmerlin/vim' 
    exec 'set rtp+=' . opam_prefix . '/share/ocamlmerlin/vimbufsync' 
    exec 'helptags ' . opam_prefix . '/share/ocamlmerlin/vim/doc' 
endif
if filereadable(opam_prefix . '/share/merlin/vim/doc/merlin.txt')
    exec 'set rtp+=' . opam_prefix . '/share/merlin/vim' 
    exec 'helptags ' . opam_prefix . '/share/merlin/vim/doc' 
endif

" #### More OCaml files:
autocmd BufNewFile,BufReadPost *.eliom set filetype=ocaml
autocmd BufNewFile,BufReadPost *.eliomi set filetype=ocaml
autocmd BufNewFile,BufReadPost *.atd set filetype=ocaml

" #### def's ocp-indent mode
" (I use NeoBundle, but it works with other package managers)
NeoBundle 'def-lkb/ocp-indent-vim'
let g:ocp_indent_args='-c strict_with=always,with=0,strict_comments=false'



" #### Some cool optional stuff
fun! OCaml_additional()
    " For the plugin 'tpope/vim-commentary':
    set commentstring=(*\ %s\ *)
    " For indenting and folding
    set foldmethod=indent
    set shiftwidth=2
    map  <buffer> <localleader>bmw obegin match  with<cr>end<esc>k2==0EEl
    nmap <buffer> <localleader>om o>>= fun  -><esc>==0t-
    nmap <buffer> <localleader>ou o>>= fun () -><esc>==
    nmap <buffer> <localleader>ad a(** *)<esc>hh
    nmap <buffer> <localleader>op o\|  -><esc>==^l
    set cc=81 " display 81st column
    " It's a merlin thing, but who cares:
    nmap <buffer> <localleader>l :Locate<cr>
endfun
autocmd FileType ocaml call OCaml_additional()