neovim config

nvim.conf

if &compatible
  set nocompatible
endif

filetype plugin indent on

" should be set before loading polyglot
let g:polyglot_disabled = ['yaml', 'latex']  " disable vim-polyglot

call plug#begin('~/.config/nvim/plugged')

    Plug 'neoclide/coc.nvim', {'branch': 'release'}

    " Plug 'neomake/neomake'
    " Plug 'dense-analysis/ale'
    Plug 'sheerun/vim-polyglot'
    Plug 'tpope/vim-fugitive'
    " Plug 'blindFS/vim-taskwarrior'

    " Plug 'junegunn/fzf', { 'dir': '~/.fzf', 'do': './install --all' }
    Plug 'junegunn/fzf.vim'

    " distraction free writing
    Plug 'junegunn/goyo.vim'
    Plug 'reedes/vim-pencil'
    Plug 'reedes/vim-colors-pencil'

    " Python plugins
    " Plug 'vim-python/python-syntax' " until polyglot uses an updated package 
    "                                 " dont forget to change g:polyglot_disabled !!!
    " Plug 'Vimjas/vim-python-pep8-indent'
    Plug 'psf/black', { 'branch': 'stable' }
    Plug 'jeetsukumaran/vim-indentwise'

    " YAML Syntax (polyglot doesnt let me set sw=2 ts=2)
    " Plug 'stephpy/vim-yaml'

    " rst note taking plugin
    Plug 'gu-fan/riv.vim'
    " Plug 'gu-fan/InstantRst'

    Plug 'tpope/vim-surround'
    Plug 'tpope/vim-commentary'
    " Plug 'tpope/vim-obsession'

    " Plug 'Yggdroot/indentLine'

    Plug 'lervag/vimtex'
    Plug 'SirVer/ultisnips'
    Plug 'honza/vim-snippets'
    Plug 'majutsushi/tagbar'
    " Plug 'scrooloose/nerdcommenter'
    Plug 'vim-airline/vim-airline'
    Plug 'vim-airline/vim-airline-themes'
    " Plug 'edkolev/tmuxline.vim'

    Plug 'chriskempson/base16-vim'

    Plug 'jeffkreeftmeijer/vim-numbertoggle' 

    Plug 'tmhedberg/SimpylFold'
    Plug 'Konfekt/FastFold'
    " Plug 'bfredl/nvim-ipy'
    " Plug 'ivanov/vim-ipython'

    " Plug 'vim-pandoc/vim-pandoc'
    " Plug 'vim-pandoc/vim-pandoc-syntax'

    Plug 'jpalardy/vim-slime'
    " Plug 'xolox/vim-colorscheme-switcher'
    " Plug 'xolox/vim-misc'  " dependency of colorscheme-switcher
call plug#end()


" set statusline+=%#ErrorMsg#%{neomake#statusline#LoclistStatus()}

"let mapleader = '-'
let mapleader = ';'
 
" hard wrap
set formatoptions=t
set textwidth=80
set wrapmargin=0
set colorcolumn=80

" tabulator
set expandtab
set tabstop=4
set shiftwidth=4
set smarttab

" appearance
set number
set showmatch
set cursorline
set background=dark

" show 3 lines before first line when scrolling
set scrolloff=3

set mouse=a

set undofile                " Save undo's after file closes
set undodir=$HOME/.config/nvim/undo " where to save undo histories
set undolevels=1000         " How many undos
set undoreload=10000        " number of lines to save for undo

" COLORSCHEMES
" fix leaking terminal background color in urxvt
" autocmd VimEnter * redraw!
set termguicolors

colorscheme base16-default-dark " or desert-warm-256 or apprentice

" function! SwitchLightDark()
"     if g:colors_name == 'flattened_light'
"         colorscheme flattened_dark
"         redraw
"     elseif g:colors_name == 'flattened_dark'
"         colorscheme flattened_light
"         redraw
"     endif
" endfunction

" enable conceal syntax elements for pandoc
" hi! link Conceal Special

" MAPPINGS
nnoremap <Leader>n :bn<CR>
nnoremap <Leader>b :bp<CR>
nnoremap <C-s> :w<CR>
inoremap <C-s> <ESC>:w<CR>
nnoremap <space> za
" nnoremap <Leader><ESC> :syntax sync minlines=50<CR>
nnoremap <Leader><ESC> :syntax sync fromstart<CR>

nnoremap <Leader>q :copen<CR>

function ToggleColors()
    if (g:colors_name == "base16-default-dark")
        colorscheme base16-gruvbox-light-soft
        set background=light
    else
        colorscheme base16-default-dark
        set background=dark
    endif
endfunction

function TogglePaste()
	" because set pastetoggle=<key> does not work with multi key combinations
	if (&paste == 0)
		set paste
        echo ":set paste"
	else
		set nopaste
        echo ":set nopaste"
	endif
endfunction

let g:pencil#wrapModeDefault = 'soft'   " default is 'hard'

" nnoremap <expr> <F6> g:colors_name == "base16-default-dark" ? ":colo base16-gruvbox-light-soft\<CR>" : ":colo base16-default-dark\<CR>" :Goyo<CR>
nnoremap <F6> :call ToggleColors()<CR>:Goyo<CR>:PencilToggle<CR>
nnoremap <Leader>p :call TogglePaste()<CR>

command InitVim edit ~/.config/nvim/init.vim

" disable arrow keys
noremap <Up> <Nop>
noremap <Down> <Nop>
noremap <Left> <Nop>
noremap <Right> <Nop>

" focus on new splits
set splitbelow
set splitright

" autocmds
au BufNewFile,BufRead *.geo set filetype=gmsh
au BufNewFile,BufRead *.tikz set filetype=tex
au BufNewFile,BufRead *.edp set filetype=freefem

" au BufRead,BufNewFile *.rst setlocal spell

" possibly slow, try to avoid syntax HL problems. .....
" autocmd BufEnter * :syntax sync fromstart
autocmd BufEnter * :syntax sync minlines=10

""" PLUGINS
" fzf                                                                          
nnoremap <Leader>f :Files<cr>                                                  
nnoremap <Leader>l :Buffers<cr>                                                
"                                                                              
" use ripgrep as grepprg                                                       
set grepprg=rg\ --vimgrep                                                      
                            

let g:goyo_width = 81

let g:black_linelength = 80

" Airline
let g:airline#extensions#tmuxline#enabled = 1
let g:airline#extensions#coc#enabled = 1
let g:airline#extensions#tabline#enabled = 1
let g:airline#extensions#tabline#excludes = ['LaTeX TOC', '__Tagbar__']
let g:airline_exclude_filenames = ['LaTeX TOC']
let g:airline#extensions#tabline#buffer_nr_show = 1
let g:airline#extensions#tabline#buffer_min_count = 2
let g:airline#extensions#tabline#buffers_label = ''
let g:airline#extensions#whitespace#show_message = 0
set gfn=Liberation\ Mono\ for\ Powerline\ 10
let g:airline_powerline_fonts = 1
" let g:airline_theme = 'bubblegum' "'jellybeans'
" let g:airline_theme = 'apprentice' "'jellybeans'
" let g:airline_theme = 'base16_default'
let g:airline_theme = 'monochrome'
let g:airline_mode_map = {
  \ '__' : '-',
  \ 'n'  : 'N',
  \ 'i'  : 'I',
  \ 'R'  : 'R',
  \ 'c'  : 'C',
  \ 'v'  : 'V',
  \ 'V'  : 'V',
  \ '' : 'V',
  \ 's'  : 'S',
  \ 'S'  : 'S',
  \ '' : 'S',
  \ }

let g:airline_section_z = airline#section#create('%p%% %{g:airline_symbols.linenr}%#__accent_bold#%3l:%#__restore__#%2v') 
let g:airline_skip_empty_sections = 1
" let g:airline_section_warning = airline#section#create('%{neomake#statusline#LoclistStatus()}')

" TagBar
nmap <F8> :TagbarToggle<CR>

" " Unite.vim
" call unite#filters#sorter_default#use(['sorter_rank'])
" nnoremap <leader>f :<C-u>Unite -start-insert file<cr>
" call unite#filters#matcher_default#use(['matcher_fuzzy'])
" nnoremap <leader>r :<C-u>Unite -start-insert file_rec/neovim:!<cr>
" nnoremap <leader>l :Unite -quick-match buffer<cr>

"" vim commentary gmsh
autocmd FileType gmsh setlocal commentstring=//\ %s
vmap gi <ESC>:'<,'>norm gcc<cr>

" SimpylFold
let g:SimpylFold_docstring_preview = 1
"autocmd BufWinEnter *.py setlocal foldexpr=SimpylFold(v:lnum) foldmethod=expr
"autocmd BufWinLeave *.py setlocal foldexpr< foldmethod<


" Slime
let g:slime_target = "tmux"
let g:slime_python_ipython = 1
let python_highlight_all=1
let g:slime_paste_file = "$HOME/.slime_paste"
let g:slime_no_mappings = 1
xmap <leader>s <Plug>SlimeRegionSend
nmap <leader>s <Plug>SlimeMotionSend
nmap <leader>ss <Plug>SlimeLineSend
nmap <leader>sc <Plug>SlimeConfig

" FastFold
let g:tex_fold_enabled=1

" VimTeX
let g:tex_flavor = 'latex'  " vim detects tex
let g:tex_comment_nospell = 1  " disable spell checking in comments (standard tex plugin)
let g:vimtex_syntax_nospell_comments = 1  " disable spell checking in comments
let g:vimtex_enabled = 1
let g:vimtex_fold_enabled = 1
let g:vimtex_view_enabled = 1
let g:vimtex_view_method = 'zathura'  " -x nvr --remote-silent %f -c %l'
" let g:vimtex_latexmk_progname = 'nvr'
" let g:vimtex_compiler_progname = 'nvr'

" IndentLine
" let g:indentLine_char='▏'
" let g:indentLine_enabled=0


" tagbar for markdown/pandoc
" .ctags:
"--langdef=markdown
"--langmap=markdown:.md
"--regex-markdown=/^(#+)[ \t]+([^#]*)/\1 \2/h,header,Markdown Headers/
"--regex-markdown=/\[([^\[]+)\]\(([^\)]+)\)/\1/l,link,Markdown Links/
"--regex-markdown=/!\[\]\(.*[\/ ](.*\.[a-z]{3})\)/\1/i,image,Markdown Image/
let g:tagbar_type_pandoc = {
            \ 'ctagstype' : 'markdown',
            \ 'kinds' : [
                \ 'h:headings',
                \ 'l:links',
                \ 'i:images'
            \ ],
    \ "sort" : 0
\ }
let g:tagbar_type_rst = {
    \ 'ctagstype': 'rst',
    \ 'ctagsbin' : 'rst2ctags',
    \ 'ctagsargs' : '-f - --sort=yes',
    \ 'kinds' : [
        \ 's:sections',
        \ 'i:images'
    \ ],
    \ 'sro' : '|',
    \ 'kind2scope' : {
        \ 's' : 'section',
    \ },
    \ 'sort': 0,
    \ }

" CoC {{{

    " from CoC example config
    " Having longer updatetime (default is 4000 ms = 4 s) leads to noticeable
    " delays and poor user experience.
    set updatetime=300
    " Don't pass messages to |ins-completion-menu|.
    set shortmess+=c

    " Always show the signcolumn, otherwise it would shift the text each time
    " diagnostics appear/become resolved.
    if has("patch-8.1.1564")
      " Recently vim can merge signcolumn and number column into one
      set signcolumn=number
    else
      set signcolumn=yes
    endif


    command! -nargs=0 Format :call CocAction('format')
    " Formatting selected code.
    " xmap <leader>F  <Plug>(coc-format-selected)
    " nmap <leader>F  <Plug>(coc-format-selected)
    xmap <leader>F :Format<cr>
    nmap <leader>F :Format<cr>

    " Use tab for trigger completion with characters ahead and navigate.
    " NOTE: Use command ':verbose imap <tab>' to make sure tab is not mapped by
    " other plugin before putting this into your config.
    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

    " Use <c-space> to trigger completion.
    inoremap <silent><expr> <c-space> coc#refresh()

    " Make <CR> auto-select the first completion item and notify coc.nvim to
    " format on enter, <cr> could be remapped by other vim plugin
    inoremap <silent><expr> <cr> pumvisible() ? coc#_select_confirm()
                                  \: "\<C-g>u\<CR>\<c-r>=coc#on_enter()\<CR>"

    " Use `[g` and `]g` to navigate diagnostics
    " Use `:CocDiagnostics` to get all diagnostics of current buffer in location list.
    nmap <silent> [g <Plug>(coc-diagnostic-prev)
    nmap <silent> ]g <Plug>(coc-diagnostic-next)
    "
    " GoTo code navigation.
    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>')
      elseif (coc#rpc#ready())
        call CocActionAsync('doHover')
      else
        execute '!' . &keywordprg . " " . expand('<cword>')
      endif
    endfunction

    " Highlight the symbol and its references when holding the cursor.
    autocmd CursorHold * silent call CocActionAsync('highlight')

    " Symbol renaming.
    nmap <leader>rn <Plug>(coc-rename)

    " Applying codeAction to the selected region.
    " Example: `<leader>aap` for current paragraph
    xmap <leader>a  <Plug>(coc-codeaction-selected)
    nmap <leader>a  <Plug>(coc-codeaction-selected)

    " Remap keys for applying codeAction to the current buffer.
    nmap <leader>ac  <Plug>(coc-codeaction)
    " Apply AutoFix to problem on the current line.
    nmap <leader>qf  <Plug>(coc-fix-current)

    " Remap <C-f> and <C-b> for scroll float windows/popups.
    if has('nvim-0.4.0') || has('patch-8.2.0750')
      nnoremap <silent><nowait><expr> <C-f> coc#float#has_scroll() ? coc#float#scroll(1) : "\<C-f>"
      nnoremap <silent><nowait><expr> <C-b> coc#float#has_scroll() ? coc#float#scroll(0) : "\<C-b>"
      inoremap <silent><nowait><expr> <C-f> coc#float#has_scroll() ? "\<c-r>=coc#float#scroll(1)\<cr>" : "\<Right>"
      inoremap <silent><nowait><expr> <C-b> coc#float#has_scroll() ? "\<c-r>=coc#float#scroll(0)\<cr>" : "\<Left>"
      vnoremap <silent><nowait><expr> <C-f> coc#float#has_scroll() ? coc#float#scroll(1) : "\<C-f>"
      vnoremap <silent><nowait><expr> <C-b> coc#float#has_scroll() ? coc#float#scroll(0) : "\<C-b>"
    endif

    " " use <tab> for trigger completion and navigate to next complete item
    " function! s:check_back_space() abort
    "   let col = col('.') - 1
    "   return !col || getline('.')[col - 1]  =~ '\s'
    " endfunction

    " " Next by Tab
    " inoremap <silent><expr> <TAB>
    "       \ pumvisible() ? "\<C-n>" :
    "       \ <SID>check_back_space() ? "\<TAB>" :
    "       \ coc#rpc#request('doKeymap', ['snippets-expand', "\<TAB>"])

    " " Previous by Tab
    " inoremap <silent><expr><S-Tab>
    "       \ pumvisible() ? "\<C-p>" :
    "       \<SID>check_back_space() ? "\<S-Tab>" :
    "       \ coc#rpc#request('doKeymap', ['snippets-expand', "\<S-Tab>"])

    " " use <c-space>for trigger completion
    " imap <expr><c-space> coc#refresh()

    " " Don't go to new line on enter when completing
    " inoremap <expr> <cr> pumvisible() ? "\<C-y>" : "\<C-g>u\<CR>"

    " " Use <C-l> to trigger snippet expand.
    " imap <C-l> <Plug>(coc-snippets-expand)

    " " Use <C-j> to select text for visual text of snippet.
    " vmap <C-j> <Plug>(coc-snippets-select)
" }}}