nvim-config/init.vim

" vim: set et sw=2 ts=2 tw=80 :
"
" Use "," as leader
let mapleader = ","
let maplocalleader = " "

set statusline+=%#warningmsg#
set statusline+=%{SyntasticStatuslineFlag()}
set statusline+=%*

let g:syntastic_always_populate_loc_list = 1
let g:syntastic_auto_loc_list = 1
let g:syntastic_check_on_open = 1
let g:syntastic_check_on_wq = 0

" LanguageClient-neovim
let g:LanguageClient_serverCommands = {
  \ 'scala': ['metals-vim'],
  \ 'sbt': ['metals-vim'],
  \ 'python': ['pyls'],
  \ 'c': ['ccls'],
  \ 'go': ['go-langserver'],
  \ 'bash': ['bash-language-server']
  \ }

let g:LanguageClient_useVirtualText = 0

function! LC_maps()
  if has_key(g:LanguageClient_serverCommands, &filetype)
    nnoremap <buffer> <silent> <localleader>d
          \ :call LanguageClient#textDocument_definition()<CR>
    nnoremap <buffer> <silent> <localleader>t
          \ :call LanguageClient#textDocument_typeDefinition()<CR>
    nnoremap <buffer> <silent> <localleader>s
          \ :call LanguageClient#textDocument_documentSymbol()<CR>
    nnoremap <buffer> <silent> <localleader>u
          \ :call LanguageClient#textDocument_references()<CR>
    nnoremap <buffer> <silent> <localleader>r
          \ :call LanguageClient#textDocument_rename()<CR>
    nnoremap <buffer> <silent> <localleader>i
          \ :call LanguageClient#textDocument_implementation()<CR>
    nnoremap <buffer> <silent> <localleader>f
          \ :call LanguageClient#textDocument_formatting()<CR>
    nnoremap <buffer> <silent> <localleader>h
          \ :call LanguageClient#textDocument_documentHighlight()<CR>
    nnoremap <buffer> <silent> <localleader>H
          \ :call LanguageClient#textDocument_clearDocumentHighlight()<CR>
  endif
endfunction

autocmd FileType * call LC_maps()

" NCM2

" enable ncm2 for all buffers
autocmd BufEnter * call ncm2#enable_for_buffer()

" IMPORTANT: :help Ncm2PopupOpen for more information
set completeopt=noinsert,menuone,noselect

" suppress the annoying 'match x of y', 'The only match' and 'Pattern not
" found' messages
set shortmess+=c

" CTRL-C doesn't trigger the InsertLeave autocmd . map to <ESC> instead.
inoremap <c-c> <ESC>

" Use <TAB> to select the popup menu:
inoremap <expr> <Tab> pumvisible() ? "\<C-n>" : "\<Tab>"
inoremap <expr> <S-Tab> pumvisible() ? "\<C-p>" : "\<S-Tab>"

" wrap existing omnifunc
" Note that omnifunc does not run in background and may probably block the
" editor. If you don't want to be blocked by omnifunc too often, you could
" add 180ms delay before the omni wrapper:
"  'on_complete': ['ncm2#on_complete#delay', 180,
"               \ 'ncm2#on_complete#omni', 'csscomplete#CompleteCSS'],
au User Ncm2Plugin call ncm2#register_source({
        \ 'name' : 'css',
        \ 'priority': 9,
        \ 'subscope_enable': 1,
        \ 'scope': ['css','scss'],
        \ 'mark': 'css',
        \ 'word_pattern': '[\w\-]+',
        \ 'complete_pattern': ':\s*',
        \ 'on_complete': ['ncm2#on_complete#omni', 'csscomplete#CompleteCSS'],
        \ })

" FILE MANAGER

" Override netrw commands with Dirvish
let g:loaded_netrwPlugin = 1
command! -nargs=? -complete=dir Explore Dirvish <args>
command! -nargs=? -complete=dir Sexplore belowright split | silent Dirvish <args>
command! -nargs=? -complete=dir Vexplore leftabove vsplit | silent Dirvish <args>

let g:dirvish_mode = ':sort ,^.*[\/],'

" SETTINGS

if !has('nvim')
  setlocal cm=blowfish2
end

" Set doc folder for plugins
helptags ~/.config/nvim/doc

" activate mouse support
set mouse=a

" allow unsaved hidden buffers
set hidden

" set column padding when scrolling from top or bottom
set scrolloff=5

" set relative line numbers
set number relativenumber

" set highlighting and continous search
set hlsearch incsearch

" show n-column limiter when textwidth is set
set colorcolumn=+1

if has('nvim')
  " prevent terminal buffers to be closed when changing buffer
  autocmd TermOpen * set bufhidden=hide

  " restore line numbers for all buffers (revert changes of cmd below)
  autocmd BufCreate * set rnu nu

  " remove line numbers to terminal
  autocmd TermOpen * set nornu nonu
end

" set autoindent on`
set autoindent

" Make :find work on all files in :pwd
set path+=**
set wildignore+=**/node_modules/**,*~

" ADDITIONAL COMMANDS

command! Q quit
command! W write
command! WQ wq

command! WW write suda://%

command! D call CreateDir()

function! CreateDir()
  !mkdir -p '%:p:h'
endfunction

" emulate system clipboard
inoremap <C-v> <ESC>"+pa
vnoremap <C-c> "+y

inoremap <S-tab> <C-d>

" make escape work in terminal and send ESC to terminal with C-Esc
tnoremap <Esc> <C-\><C-n>
tnoremap <C-Esc> <Esc>

" Automatically save folds for each file
augroup AutoSaveFolds
  autocmd!
  autocmd BufWinLeave * silent! mkview
  autocmd BufWinEnter * silent! loadview | doautocmd BufRead
augroup END

" clear search pattern with F2
noremap <F2> :let @/ = ""<CR>

" Switch between Windows with: Leader w
nnoremap <Leader>w <C-w><C-w>

" Re-read buffer and load modelines with: Leader m
nnoremap <Leader>m :doautocmd BufRead<CR>

" Open fzf with all files in git with: Leader f
nnoremap <Leader>f :GFiles<CR>

" Fix indentation with: Leader i
nnoremap <Leader>i mzgg=G`z

" Delete buffer with: Leader d
nnoremap <Leader>d :bp\|bd #<CR>

" move to next tab with: Leader t
tnoremap <C-e> <C-\><C-n>:tabnext<CR>

" clear trailing spaces in file
function! g:ClearTrailingSpaces()
  silent! %s/\s\s*$//g
  let @/ = "" " clear last search
endfunction

" remove trailing spaces with: Leader t s
nnoremap <silent> <Leader>s :call ClearTrailingSpaces()<CR>

" automatically remove trailing spaces when saving a file
autocmd BufWrite * call ClearTrailingSpaces()

" Reload config with: Leader R
nnoremap <Leader>R :source ~/.config/nvim/init.vim<CR>

" show Vim's true competitor with: Leader r c m
nnoremap <Leader>rcm :!open https://youtu.be/jn40Ugz0vuk<CR><CR>

" open netrw in directory of current file
nnoremap <Leader>e :Ex<CR>

" Toggle Location and Quickfix windows with these mappings
let g:lt_location_list_toggle_map = '<leader>l'
let g:lt_quickfix_list_toggle_map = '<leader>q'

" Insert in the end of file with Leader c
nnoremap <Leader>c GA

" COLORSCHEME

" set colorscheme to onedark.im for nvim and airline
packadd! onedark.vim
colorscheme onedark
let g:airline_theme='onedark'

" PACKAGES

" vim-fish setup
syntax enable
filetype plugin indent on
" Set up :make to use fish for syntax checking.
autocmd FileType fish compiler fish

if has("vms")
  set nobackup		" do not keep a backup file, use versions instead
else
  set backup		" keep a backup file (restore to previous version)
  if has('persistent_undo')
    set undofile	" keep an undo file (undo changes after closing)
  endif
endif