NeoVim config

.nvimrc

set nocompatible

call plug#begin('~/.vim/plugged')
Plug 'junegunn/vim-easy-align'
Plug 'scrooloose/nerdtree', { 'on':  'NERDTreeToggle' }
Plug 'sbdchd/neoformat'
Plug 'neoclide/coc.nvim'
Plug 'jackguo380/vim-lsp-cxx-highlight'
Plug 'lervag/vimtex'
Plug '/home/nikon/projects/chapel-1.22.1/highlight/vim'
Plug 'tpope/vim-fugitive'
Plug 'junegunn/fzf', { 'do': { -> fzf#install() } }
Plug 'Xuyuanp/nerdtree-git-plugin'
Plug 'preservim/tagbar'
Plug 'ludovicchabant/vim-gutentags'
call plug#end()

let leader=','

set number
set syntax
syntax on
filetype indent on
set autoindent

" Neoformat
let g:neoformat_cpp_clangformat = {
    \ 'exe': 'clang-format',
    \ 'args': ['--style="file"', '--fallback-style="LLVM"']
\}

let g:neoformat_enabled_cpp = ['clangformat']
let g:neoformat_enabled_c = ['clangformat']

" augroup fmt
"   autocmd!
"   autocmd BufWritePre * undojoin | Neoformat
" augroup END

" Deal with tabs
set tabstop=4
set softtabstop=4
set shiftwidth=4

" Work easier with long lines
set wrap
set linebreak
nnoremap j gj
nnoremap k gk

set hidden
set nobackup
set nowritebackup
set cmdheight=2
set updatetime=300
set shortmess+=c
set signcolumn=yes
set scrolloff=5

" Coc/ccls support
inoremap <silent><expr> <TAB>
	\ pumvisible() ? "\<C-n>" :
	\ <SID>check_back_space() ? "\<TAB>" :
	\ coc#refresh()
inoremap <expr><S-TAB> pumvisible() ? "\<C-p>" : "\<C-h>"

function! s:check_back_space() abort
	let col = col('.') - 1
	return !col || getline('.')[col - 1] =~# '\s'
endfunction

inoremap <silent><expr> <c-space> coc#refresh()

" Use <cr> to confirm completion, `<C-g>u` means break undo chain at current position.
" Coc only does snippet and additional edit on confirm.
inoremap <expr> <cr> pumvisible() ? "\<C-y>" : "\<C-g>u\<CR>"

" Use `[c` and `]c` to navigate diagnostics
nmap <silent> [c <Plug>(coc-diagnostic-prev)
nmap <silent> ]c <Plug>(coc-diagnostic-next)

" Remap keys for gotos
nmap <silent> gd <Plug>(coc-definition)
nmap <silent> gy <Plug>(coc-type-definition)
nmap <silent> gi <Plug>(coc-implementation)
nmap <silent> gr <Plug>(coc-references)

" Use K to show documentation in preview window
nnoremap <silent> K :call <SID>show_documentation()<CR>

function! s:show_documentation()
  if (index(['vim','help'], &filetype) >= 0)
    execute 'h '.expand('<cword>')
  else
    call CocAction('doHover')
  endif
endfunction

" Highlight symbol under cursor on CursorHold
autocmd CursorHold * silent call CocActionAsync('highlight')

" Highlight current line
" set cursorline 
" hi CursorLine cterm=NONE ctermbg=darkblue ctermfg=white guibg=dark guifg=dark

" Remap for rename current word
nmap <leader>rn <Plug>(coc-rename)

" Remap for format selected region
xmap <leader>f  <Plug>(coc-format-selected)
nmap <leader>f  <Plug>(coc-format-selected)

" Remap for do codeAction of selected region, ex: `<leader>aap` for current paragraph
xmap <leader>a  <Plug>(coc-codeaction-selected)
nmap <leader>a  <Plug>(coc-codeaction-selected)

" Remap for do codeAction of current line
nmap <leader>ac  <Plug>(coc-codeaction)
" Fix autofix problem of current line
nmap <leader>qf  <Plug>(coc-fix-current)

" Use <tab> for select selections ranges, needs server support, like: coc-tsserver, coc-python
nmap <silent> <TAB> <Plug>(coc-range-select)
xmap <silent> <TAB> <Plug>(coc-range-select)
xmap <silent> <S-TAB> <Plug>(coc-range-select-backword)

" Use `:Format` to format current buffer
command! -nargs=0 Format :call CocAction('format')

" Use `:Fold` to fold current buffer
command! -nargs=? Fold :call     CocAction('fold', <f-args>)

" use `:OR` for organize import of current buffer
command! -nargs=0 OR   :call     CocAction('runCommand', 'editor.action.organizeImport')

" Add status line support, for integration with other plugin, checkout `:h coc-status`
set statusline^=%{coc#status()}%{get(b:,'coc_current_function','')}

" Using CocList
" Show all diagnostics
nnoremap <silent> <space>a  :<C-u>CocList diagnostics<cr>
" Manage extensions
nnoremap <silent> <space>e  :<C-u>CocList extensions<cr>
" Show commands
nnoremap <silent> <space>c  :<C-u>CocList commands<cr>
" Find symbol of current document
nnoremap <silent> <space>o  :<C-u>CocList outline<cr>
" Search workspace symbols
nnoremap <silent> <space>s  :<C-u>CocList -I symbols<cr>
" Do default action for next item.
nnoremap <silent> <space>j  :<C-u>CocNext<CR>
" Do default action for previous item.
nnoremap <silent> <space>k  :<C-u>CocPrev<CR>
" Resume latest coc list
nnoremap <silent> <space>p  :<C-u>CocListResume<CR>

" Vimtex 
let g:tex_flavor = 'tex'
let g:vimtex_compiler_latexmk = {
			\ 'build_dir' : '',
			\ 'callback' : 1,
			\ 'continuous' : 1,
			\ 'executable' : 'latexmk',
			\ 'hooks' : [],
			\ 'options' : [
			\   '-shell-escape',
			\   '-verbose',
			\   '-file-line-error',
			\   '-synctex=1',
			\   '-interaction=nonstopmode',
			\ ],
			\}

let g:vimtex_view_general_viewer = 'okular'
let g:vimtex_view_general_options = '--unique file:@pdf\#src:@line@tex'
let g:vimtex_view_general_options_latexmk = '--unique'
nnoremap <F5> :VimtexCompile<CR>

" NERDTree
nnoremap <leader>n :NERDTreeFocus<CR>
nnoremap <C-n> :NERDTree<CR>
nnoremap <C-t> :NERDTreeToggle<CR>
nnoremap <C-f> :NERDTreeFind<CR>
autocmd BufEnter * if bufname('#') =~ 'NERD_tree_\d\+' && bufname('%') !~ 'NERD_tree_\d\+' && winnr('$') > 1 |
    \ let buf=bufnr() | buffer# | execute "normal! \<C-W>w" | execute 'buffer'.buf | endif

" Custom maps
" Search visually selected text
vnoremap // y/\V<C-R>=escape(@",'/\')<CR><CR>