dot_vimrc

" fold this file with [[[ and ]]]
" vim:foldmethod=marker:foldmarker=[[[,]]]
" dependencies[[[1
" nodejs:  coc.nvim, markdown-preview.nvim
" yarn:    markdown-preview.nvim
" ]]]
" fix E474 caused by vim in nix-shell
"   https://stackoverflow.com/q/18321538/14399237
" set encoding=utf-8
" default configs[[[1
" Get the defaults that most users want.
source $VIMRUNTIME/defaults.vim
" backup, undo [[[2
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 undodir=~/.vim/undo_dir " todo: create dir if notexit
    set undofile	" keep an undo file (undo changes after closing)
  endif
endif
" ]]]
" hlsearch[[[2
if &t_Co > 2 || has("gui_running")
  " Switch on highlighting the last used search pattern.
  set hlsearch
endif
" ]]]
" autocmd group[[[2
" Put these in an autocmd group, so that we can delete them easily.
augroup vimrcEx
  au!

  " For all text files set 'textwidth' to 78 characters.
  autocmd FileType text setlocal textwidth=78
augroup END
" ]]]
" matchit[[[2
" Add optional packages.
"
" The matchit plugin makes the % command work better, but it is not backwards
" compatible.
" The ! means the package won't be loaded right away but when plugins are
" loaded during initialization.
if has('syntax') && has('eval')
  packadd! matchit
endif
" ]]]
" ]]]
" my configs[[[1
" number, clipboard[[[2
set clipboard^=unnamed,unnamedplus
set number relativenumber numberwidth=1
autocmd FileType help setlocal number relativenumber numberwidth=1
let g:netrw_bufsettings = 'number relativenumber numberwidth=1 noma nomod ro nobl'
"]]]
" indent, tab, case, whitespaces [[[2
" indent
set smartindent
set autoindent

" tab
" set smarttab
set tabstop=2       " The width of a TAB is set to 2.
set shiftwidth=2    " Indents will have a width of 2
" set softtabstop=2   " Sets the number of columns for a TAB
set expandtab       " Expand TABs to spaces

" case insensitive
set ignorecase smartcase

" whitespaces
set listchars=eol:¬,tab:>␣,trail:~,extends:>,precedes:<,space:·
":set listchars=eol:¬,tab:>·,trail:~,extends:>,precedes:<,space:␣
set list
"]]]
" true color, background, mouse[[[2
" true color
if (has("termguicolors"))
  set termguicolors
endif
if $TERM == "xterm-256color"
  set t_Co=256
endif

" tmux color
set term=xterm-256color
if &term =~ '256color'
  " Disable Background Color Erase (BCE) so that color schemes work
  " properly within 256-color terminals
  set t_ut=
endif

" mouse in tmux
set ttymouse=xterm2
"]]]
" cursor shape[[[2
" https://stackoverflow.com/a/70135079/14399237
let &t_SI.="\e[6 q" "SI = INSERT mode, 6 = solid line
let &t_SR.="\e[4 q" "SR = REPLACE mode, 4 = solid underscore
let &t_EI.="\e[2 q" "EI = NORMAL mode (ELSE), 2 = solid block
"]]]
" other[[[2
" filetype plugin
filetype plugin indent on

" switch buffers without saving
set hidden

" search all subdirectory of current directory
set path+=**

" vertical and fuzzy wildmenu
set wildoptions=fuzzy,pum

" auto wrap in vimdiff
au VimEnter * if &diff | execute 'windo set wrap' | endif
" ]]]
" ]]]
" keybindings, commands[[[1
" clear search highlight 
nnoremap <esc><esc> :noh<return><esc>

" replace grep with rg
set grepprg=rg\ --vimgrep\ --smart-case\ --follow

" <Leader> to space
let mapleader = "\<space>"

" Cv: clean vim, used for fast macro replaying
command Cv w | wviminfo | !vim -c 'set nu rnu nuw=1' --clean -i ~/.viminfo %

" UP: upgrade all plugins and managers
command! UP PlugClean | PlugUpdate | PlugUpgrade | JetpackSync

" ]]]
" only load plugins after installing vim-jetpack
if !empty(glob('~/.vim/autoload/jetpack.vim'))
" plugins[[[1
  call jetpack#begin()
  Jetpack 'alker0/chezmoi.vim'
  Jetpack 'iamcco/markdown-preview.nvim', { 'do': { -> mkdp#util#install() }, 'for': ['markdown', 'vim-jetpack']}
  Jetpack 'itchyny/lightline.vim'
  Jetpack 'preservim/vim-markdown', { 'for': 'markdown' }
  Jetpack 'sainnhe/everforest'
  call jetpack#end()
" ]]]
" configs[[[1
" dark background for tty, light for terminal[[[2
if $TERM == 'linux'
  set background=dark
else
  set background=light
endif
" ]]]
" everforest[[[2
let g:everforest_better_performance = 1
let g:everforest_background = 'soft'
let g:everforest_enable_italic = 1
" let g:everforest_transparent_background = 2 " transparent status line
let g:everforest_ui_contrast = 'high'
colorscheme everforest
" ]]]
" lightline[[[2
set laststatus=2
set noshowmode
let g:lightline = {
      \ 'colorscheme': 'everforest',
      \ }
" ]]]
" vim-markdown[[[2
let g:vim_markdown_toc_autofit = 1
let g:vim_markdown_frontmatter = 1
let g:vim_markdown_strikethrough = 1
let g:vim_markdown_conceal_code_blocks = 0
autocmd FileType markdown setlocal conceallevel=2 " syntax concealing
" ]]]
" gruvbox[[[2
" let g:gruvbox_italic=1
" set background=light
" colorscheme gruvbox
" ]]]
" ]]]
endif

" only load plugins after installing vim-plug
if !empty(glob('~/.vim/autoload/plug.vim'))
  " load after start
  function DelayLoading(id)
  " delayed plugins[[[1
  call plug#begin()
  " no dependencies[[[2
  Plug '907th/vim-auto-save'
  Plug 'AndrewRadev/tagalong.vim'
  Plug 'easymotion/vim-easymotion'
  Plug 'godlygeek/tabular' " for vim-markdown
  Plug 'junegunn/fzf', { 'do': { -> fzf#install() } }
  Plug 'junegunn/fzf.vim'
  Plug 'junegunn/goyo.vim'
  Plug 'junegunn/vim-peekaboo'
  Plug 'lilydjwg/fcitx.vim'
  Plug 'luochen1990/rainbow'
  Plug 'machakann/vim-highlightedyank'
  Plug 'simnalamburt/vim-mundo'
  Plug 'tpope/vim-commentary'
  Plug 'tpope/vim-sleuth'
  Plug 'tpope/vim-surround'
  " ]]]
  " need dependencies[[[2
  if executable('node')
    Plug 'neoclide/coc.nvim', {'branch': 'release'}
  endif
  " ]]]
  " profile[[[2
  " Plug 'dstein64/vim-startuptime'
  " Plug 'tweekmonster/startuptime.vim'
  " ]]]
  call plug#end()
  " ]]]
  " delayed plugin configs[[[1
  " explicitly initialize plugins[[[2
  call peekaboo#on()
  execute 'Sleuth'
  " ]]]
  " rainbow[[[2
  let g:rainbow_active = 1
  " ]]]
  " goyo callbacks[[[2
  function! s:goyo_enter()
    set number relativenumber
    " cursor location
    :file
    nnoremap <esc><esc> <c-g>
    " list without eol
    set listchars=tab:>␣,trail:~,extends:>,precedes:<,space:·
    " highlight! NonText guifg=#6c767f guibg=NONE gui=NONE
  endfunction

  function! s:goyo_leave()
    set listchars=eol:¬,tab:>␣,trail:~,extends:>,precedes:<,space:·
  endfunction

  autocmd! User GoyoEnter nested call <SID>goyo_enter()
  autocmd! User GoyoLeave nested call <SID>goyo_leave()
  " ]]]
  " coc.nvim keybindings[[[2
  " 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.
  if has('nvim')
    inoremap <silent><expr> <c-space> coc#refresh()
  else
    inoremap <silent><expr> <c-@> coc#refresh()
  endif

  " 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>"
  " ]]]
  " ]]]
  endfunction
  if has('timers')
    call timer_start(500, 'DelayLoading')
  else
    call DelayLoading('')
  endif
endif