Neovim configuration

init.vim

" Setup vim-plug -----------------------------------------------------------{{{

" Declare Plugin system Config
call plug#begin('~/.local/share/nvim/plugged')

" UI enhance
Plug 'Yggdroot/indentLine'
Plug 'airblade/vim-gitgutter'
Plug 'itchyny/lightline.vim'

" Distraction-free
Plug 'junegunn/goyo.vim' 

" Color scheme
Plug 'joshdick/onedark.vim'

" Editing enhance
Plug 'tpope/vim-surround'

" insert or delete brackets, parens, quotes in pair
Plug 'jiangmiao/auto-pairs'

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

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

" Golang editing enhance, not include LSP support
Plug 'fatih/vim-go', { 'do': ':GoUpdateBinaries' }

" Bash enhance
Plug 'z0mbix/vim-shfmt', { 'for': 'sh' }

" Navigating
Plug 'scrooloose/nerdtree'

" Git
Plug 'Xuyuanp/nerdtree-git-plugin'
Plug 'octref/RootIgnore'

" Support Server Language Protocol

" Check syntax in Vim asynchronously and fix files, 
"" with Language Server Protocol (LSP) support
Plug 'w0rp/ale'

" Initialize plugin system
call plug#end()

" }}}

" System Settings -----------------------------------------------------------{{{

" True color support
if (has("termguicolors"))
  set termguicolors
endif

" Neovim Settings
set tabstop=2 shiftwidth=2 expandtab
set conceallevel=0

" When you make a change to a file tracked by git, the diff markers should appear automatically.
" The delay is governed by vim's updatetime option; the default value is 4
set updatetime=250

" Fix delay in entering normal mode after pressing ESC (switching to normal mode)
set timeoutlen=1000 ttimeoutlen=0

" Show tabs
set lcs=tab:▸\ ,

" use mouse
set mouse=a

" }}}

" Look and Feel -------------------------------------------------------------{{{

" Keep the git gutter space even with new buffer
set signcolumn=yes
autocmd FileType tagbar,nerdtree setlocal signcolumn=no

" Color scheme
syntax on
set background=dark
colorscheme onedark

" Distraction-free
let g:goyo_width=120
let g:goyo_linenr=1

" Highlight the current line
set cursorline

" One Dark scheme
let g:onedark_termcolors=256
let g:onedark_terminal_italics=1
let g:lightline = {
  \ 'colorscheme': 'onedark',
  \ }
" }}}

" NERDTree ------------------------------------------------------------------{{{
let NERDTreeIgnore = ['\.pyc$', '__pycache__']
let NERDTreeShowHidden = 1
" }}}

" FZF -----------------------------------------------------------------------{{{
let g:unite_data_directory='~/.nvim/.cache/unite'
let g:unite_source_history_yank_enable=1
let g:unite_prompt='» '
let g:unite_source_rec_async_command =['ag', '--follow', '--nocolor', '--nogroup','--hidden', '-g', '',
            \ '--ignore', '.git',
            \ '--ignore', '*.png',
            \ ]
"}}}

" Golang --------------------------------------------------------------------{{{
let g:go_def_mode='gopls'
let g:go_info_mode='gopls'
" }}}

" Bash enhance --------------------------------------------------------------{{{
" use 2 spaces
let g:shfmt_extra_args = '-i 2'
" }}}

" Key mapping ---------------------------------------------------------------{{{
" Remap Leader to ,
let mapleader = ","

" NERDTree
map <Leader>e :NERDTreeToggle<cr>
map <Leader>c :NERDTreeFind<cr>

" Golang
map <Leader>r :GoRun<cr>
map <Leader>d :GoDef<cr>

" FZF
map <Leader>f :FZF<cr>

" }}}

" Fold, gets it's own section  ----------------------------------------------{{{

function! MyFoldText() " {{{
  let line = getline(v:foldstart)

  let nucolwidth = &fdc + &number * &numberwidth
  let windowwidth = winwidth(0) - nucolwidth - 3
  let foldedlinecount = v:foldend - v:foldstart

  " expand tabs into spaces
  let onetab = strpart('          ', 0, &tabstop)
  let line = substitute(line, '\t', onetab, 'g')

  let line = strpart(line, 0, windowwidth - 2 -len(foldedlinecount))
  let fillcharcount = windowwidth - len(line) - len(foldedlinecount)
  return line . '…' . repeat(" ",fillcharcount) . foldedlinecount . '…' . ' '
endfunction " }}}

set foldtext=MyFoldText()
autocmd InsertEnter * if !exists('w:last_fdm') | let w:last_fdm=&foldmethod | setlocal foldmethod=manual | endif
autocmd InsertLeave,WinLeave * if exists('w:last_fdm') | let &l:foldmethod=w:last_fdm | unlet w:last_fdm | endif
autocmd FileType vim setlocal fdc=1
set foldlevel=99
" Space to toggle folds.
nnoremap <Space> za
vnoremap <Space> za
autocmd FileType vim setlocal foldmethod=marker
autocmd FileType vim setlocal foldlevel=0
autocmd FileType html setlocal foldmethod=marker
autocmd FileType html setlocal fdl=3
autocmd FileType javascript,html,css,scss,typescript setlocal foldlevel=99
autocmd FileType javascript,typescript,css,scss,json setlocal foldmethod=marker
autocmd FileType javascript,typescript,css,scss,json setlocal foldmarker={,}
au FileType html nnoremap <buffer> <leader>F zfat
" }}}