vimrc

" http://vimdoc.sourceforge.net/htmldoc/starting.html#vimrc

set nocompatible        " use vim defaults
set scrolloff=3         " keep 3 lines when scrolling
set ai                  " set auto-indenting on for programming

set showcmd             " display incomplete commands
set nobackup            " do not keep a backup file
set number              " show line numbers
set ruler               " show the current row and column

set hlsearch            " highlight searches
set incsearch           " do incremental searching
set showmatch           " jump to matches when entering regexp
set ignorecase          " ignore case when searching
set smartcase           " no ignorecase if Uppercase char present

set visualbell t_vb=    " turn off error beep/flash
set novisualbell        " turn off visual bell

set backspace=indent,eol,start  " make that backspace key work the way it should
" set runtimepath=$VIMRUNTIME     " turn off user scripts, https://github.com/igrigorik/vimgolf/issues/129

syntax on               " turn syntax highlighting on by default
filetype on             " detect type of file
filetype indent on      " load indent file for specific file type

set t_RV=               " http://bugs.debian.org/608242, http://groups.google.com/group/vim_dev/browse_thread/thread/9770ea844cec3282

" ==================== customize ====================
set tabstop=4
set shiftwidth=4
set softtabstop=4
set expandtab

let mapleader="-"
let maplocalleader=","
" ==================== maps ====================
noremap <leader>n1 :NERDTreeToggle<CR>
noremap <leader>n2 :NERDTreeFind<CR>

nnoremap <leader>ev :vsplit $MYVIMRC<cr>
nnoremap <leader>sv :source $MYVIMRC<cr>

nnoremap <leader>= :GoImports<cr>

" ==================== vim-plug ====================
let g:lsp_log_verbose = 0
let g:lsp_log_file = expand('/tmp/vim-lsp.log')

" Plugins will be downloaded under the specified directory.
call plug#begin('~/.vim/plugged')

" Declare the list of plugins.
Plug 'morhetz/gruvbox'
Plug 'tpope/vim-fugitive'
Plug 'airblade/vim-gitgutter'
Plug 'scrooloose/nerdtree'
Plug 'Xuyuanp/nerdtree-git-plugin'
Plug 'fatih/vim-go', { 'do': ':GoUpdateBinaries' }
Plug 'vim-airline/vim-airline'
Plug 'vim-airline/vim-airline-themes'
Plug 'junegunn/fzf', { 'dir': '~/.fzf', 'do': './install --all' }
Plug 'junegunn/fzf.vim'
Plug 'rust-lang/rust.vim'

Plug 'prabirshrestha/vim-lsp'
Plug 'mattn/vim-lsp-settings'
Plug 'prabirshrestha/asyncomplete.vim'
Plug 'prabirshrestha/asyncomplete-lsp.vim'
" Plug 'w0rp/ale'

" List ends here. Plugins become visible to Vim after this call.
call plug#end()


" ==================== for gruvbox ====================
set t_Co=256
set background=dark
colorscheme gruvbox

" ==================== for git gutter ====================
set updatetime=100

" ==================== for nerdtree ==================== autocmd StdinReadPre * let s:std_in=1
autocmd VimEnter * if argc() == 1 && isdirectory(argv()[0]) && !exists("s:std_in") | exe 'NERDTree' argv()[0] | wincmd p | ene | endif


" ==================== for lsp ====================
" https://github.com/prabirshrestha/vim-lsp/wiki/Servers-Go
if executable('gopls')
    au User lsp_setup call lsp#register_server({
        \ 'name': 'gopls',
        \ 'cmd': {server_info->['gopls']},
        \ 'whitelist': ['go'],
        \ })
    autocmd BufWritePre *.go LspDocumentFormatSync
endif

let g:go_fmt_command = "goimports"