OCaml vimrc

.vimrc

if executable("opam")
  let g:opamshare = substitute(system('opam config var share'),'\n$','','''')

  let g:ocamlocpindent = g:opamshare . "/ocp-indent/vim"
  if !isdirectory(g:ocamlocpindent)
    echom "Couldn't find ocp-indent in " . g:ocamlocpindent
    let g:ocaml_has_ocpindent = 0
  else
    let g:ocaml_has_ocpindent = 1
  endif

  let g:ocamlmerlin =  g:opamshare . "/merlin/vim"
  if !isdirectory(g:ocamlmerlin)
    echom "Couldn't find merlin in " . g:ocamlmerlin
    let g:ocaml_has_merlin = 0
  else
    let g:ocaml_has_merlin = 1
  endif
endif

call plug#begin('~/.cache/vim/plugged')

Plug 'ctrlpvim/ctrlp.vim'
Plug 'ervandew/supertab'
Plug 'godlygeek/tabular'
Plug 'luochen1990/rainbow'
Plug 'rgrinberg/vim-ocaml'
Plug 'w0rp/ale'
Plug g:ocamlocpindent, { 'for': 'ocaml' }
Plug g:ocamlmerlin, { 'for': 'ocaml' }

call plug#end()

function FT_ocaml()
    setlocal textwidth=80
    setlocal colorcolumn=80
    setlocal shiftwidth=2
    setlocal tabstop=2
    setlocal expandtab
    setlocal smarttab

    if g:ocaml_has_merlin
      nmap <LocalLeader>d :MerlinDocument<CR>
      nmap <LocalLeader>gd :MerlinILocate<CR>
      nmap <LocalLeader>m :MerlinDestruct<CR>
      nmap <LocalLeader>o :MerlinOutline<CR>
      nmap <LocalLeader>r <Plug>(MerlinRename)
      nmap <LocalLeader>R <Plug>(MerlinRenameAppend)
      nmap <LocalLeader>T :MerlinYankLatestType<CR>
    endif

    vmap a- :Tabularize /-><CR> 
    vmap a: :Tabularize /:<CR> 

    " Load topkg in Merlin when editing pkg/pkg.ml
    if expand("%:p") =~# "pkg\/pkg\.ml$"
      call merlin#Use("topkg")
    endif

    call SuperTabSetDefaultCompletionType("<c-x><c-o>")
endfunction

au FileType ocaml call FT_ocaml()
au BufRead,BufNewFile *.ml,*.mli compiler ocaml

autocmd BufNewFile,BufRead jbuild setlocal filetype=scheme
autocmd BufNewFile,BufRead jbuild :RainbowToggle

let g:rainbow_active = 0
let g:ale_lint_on_text_changed = 'never'