Golang Vim/Neovim

.vimrc

"~/.vimrc

"*****************************************************************************
"" install vim-plug
"*****************************************************************************

let vimplug_exists=expand('~/.vim/autoload/plug.vim')

let g:vim_bootstrap_langs='go,html,javascript,typescript'
let g:vim_bootstrap_editor='vim'

if !filereadable(vimplug_exists)
  if !executable("curl")
    echoerr "You have to install curl or first install vim-plug yourself!"
    execute "q!"
  endif

  echo "Installing Vim-Plug..."
  echo ""
  silent exec "!\curl -fLo " . vimplug_exists . " --create-dirs https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim"

  let g:not_finish_vimplug='yes'

  autocmd VimEnter * PlugInstall
endif

call plug#begin(expand('~/.vim/plugged'))

Plug 'airblade/vim-gitgutter'
Plug 'cespare/vim-toml'
Plug 'diegomarangoni/vim-spacemacs'
Plug 'dracula/vim', { 'as': 'dracula' }
Plug 'fatih/vim-go', { 'do': ':GoUpdateBinaries' }
Plug 'hashivim/vim-terraform'
Plug 'jiangmiao/auto-pairs'
Plug 'junegunn/fzf', { 'do': './install --bin' }
Plug 'junegunn/fzf.vim'
Plug 'preservim/nerdtree'
Plug 'tpope/vim-commentary'
Plug 'tpope/vim-fugitive'
Plug 'tpope/vim-sensible'
Plug 'tpope/vim-surround'
Plug 'vim-airline/vim-airline'
Plug 'vim-syntastic/syntastic'
Plug 'ycm-core/YouCompleteMe'

call plug#end()

"*****************************************************************************
"" config
"*****************************************************************************

" set
set nocompatible   " disable vi compatibility
set number         " show current line number
set relativenumber " show relative line numbers
set hidden         " allow change buffer without saving
set termguicolors  " enable true colors support
set cursorline     " highlight cursor line
set hlsearch       " highlight search pattern

set belloff=all             " disable audio bell
set clipboard=unnamed       " to make clipboard works
set completeopt=menuone     " show completion in a popup menu
set directory=~/.vim/swap/  " path to store swap files
set rtp+=/usr/local/opt/fzf " add fzf to runtime path

if has("nvim")
  set inccommand=nosplit " command live preview
endif

" creates swap files directory if necessary
if !isdirectory(expand(&directory))
  call mkdir(expand(&directory), "p")
endif

" cursor shape on insert mode
let &t_SI="\<Esc>]1337;CursorShape=1\x7"
let &t_EI="\<Esc>]1337;CursorShape=0\x7"

" make italic works
let &t_ZH="\e[3m"
let &t_ZR="\e[23m"

" leader key
let mapleader=','

" nerdtree
let NERDTreeMinimalUI=1
let NERDTreeCascadeSingleChildDir=0

"*****************************************************************************
"" syntastic
"*****************************************************************************
set statusline+=%#warningmsg#
set statusline+=%{SyntasticStatuslineFlag()}
set statusline+=%*

let g:syntastic_always_populate_loc_list = 1
let g:syntastic_auto_loc_list = 1
let g:syntastic_check_on_open = 1
let g:syntastic_check_on_wq = 0

"*****************************************************************************
"" golang
"*****************************************************************************

" set tab width of 4 spaces for go
autocmd! BufNewFile,BufRead *.go setlocal noexpandtab tabstop=4 shiftwidth=4

let g:go_fmt_command="goimports"
let g:go_rename_command="gopls"

" improves Go syntax highlighting
let g:go_highlight_operators=1
let g:go_highlight_functions=1
let g:go_highlight_function_parameters=1
let g:go_highlight_function_calls=1
let g:go_highlight_types=1
let g:go_highlight_fields=1

"*****************************************************************************
"" theming
"*****************************************************************************

try
  colorscheme dracula
catch /^Vim\%((\a\+)\)\=:E185/
  colorscheme default
endtry

"*****************************************************************************
"" mapping
"*****************************************************************************

" use visual selected text as pattern when `*`
vmap * y:let @/ = escape(@", '/\*.')<CR>nN

" prevent cursor movement when `*`
nmap * *N

" add autocomplete window navigation with `TAB` and `C-k,j`
inoremap <expr> <Tab>   pumvisible() ? "\<C-n>" : "\<Tab>"
inoremap <expr> <S-Tab> pumvisible() ? "\<C-p>" : "\<S-Tab>"
inoremap <expr> <C-j>   pumvisible() ? "\<C-n>" : "\<Tab>"
inoremap <expr> <C-k>   pumvisible() ? "\<C-p>" : "\<S-Tab>"
inoremap <expr> <cr>    pumvisible() ? "\<C-y>" : "\<cr>"

" smart way to move between windows
map <C-j> <C-W>j
map <C-k> <C-W>k
map <C-h> <C-W>h
map <C-l> <C-W>l

" alias leader key to space bar
map <Space> <leader>

init.vim

"~/.config/nvim/init.vim
set runtimepath^=~/.vim runtimepath+=~/.vim/after
let &packpath = &runtimepath
source ~/.vimrc