CppVimEnvironmentSetup.txt

sudo apt-get install vim python3-pip
sudo update-alternatives --config vi # choose vim.basic auto mode

# https://github.com/tpope/vim-pathogen
mkdir -p ~/.vim/autoload ~/.vim/bundle && \
curl -LSso ~/.vim/autoload/pathogen.vim https://tpo.pe/pathogen.vim

# https://github.com/morhetz/gruvbox/wiki/Installation
git clone https://github.com/morhetz/gruvbox.git ~/.vim/bundle/gruvbox

# https://github.com/Shougo/deoplete.nvim
git clone https://github.com/Shougo/deoplete.nvim ~/.vim/bundle/deoplete
git clone https://github.com/roxma/nvim-yarp ~/.vim/bundle/nvim-yarp
git clone https://github.com/roxma/vim-hug-neovim-rpc ~/.vim/bundle/vim-hug-neovim-rpc
pip3 install --user pynvim

# https://github.com/itchyny/lightline.vim
git clone https://github.com/itchyny/lightline.vim ~/.vim/bundle/lightline.vim
git clone https://github.com/tpope/vim-fugitive ~/.vim/bundle/vim-fugitive

# https://github.com/tweekmonster/deoplete-clang2
# git clone https://github.com/tweekmonster/deoplete-clang2 ~/.vim/bundle/deoplete-clang2

# for neovim
# vi ~/.config/nvim/init.vim

```
set runtimepath^=~/.vim runtimepath+=~/.vim/after
let &packpath = &runtimepath
source ~/.vimrc
```

vi ~/.vimrc

```
set nocompatible
execute pathogen#infect()
let g:deoplete#enable_at_startup = 1
call g:deoplete#custom#option('min_pattern_length', 1)
call g:deoplete#custom#option('auto_complete_delay', 0)
call g:deoplete#custom#var('buffer', { 'require_same_filetype': v:false })

set background=dark
set mouse=a
set showmode
set cursorline
set backspace=indent,eol,start
set number
set showmatch
set incsearch
set hlsearch
set ignorecase
set list
set listchars=tab:'.,trail:.,nbsp:.
set tabstop=4
set shiftwidth=4
set softtabstop=4
set expandtab
set autoindent
set smartindent
set nocindent
set pastetoggle=<F12>
set clipboard=unnamed
set encoding=utf-8
set fileencodings=utf-8,iso-2022-jp,euc-jp,sjis,cp932
set tabpagemax=100
set nomodeline " to avoid arbitrary code execution
" set columns=120
" set lines=30
colorscheme gruvbox
filetype plugin indent off
syntax on

" easier moving in tabs and windows
noremap <C-J> <C-W>j
noremap <C-K> <C-W>k
noremap <C-L> <C-W>l
noremap <C-H> <C-W>h

" wrapped lines goes down/up to next row rather than next
nnoremap j gj
nnoremap k gk

" autocomplete key mappings
" inoremap <expr><Esc> pumvisible() ? "\<C-y>" : "\<Esc>"
" inoremap <expr><Enter> pumvisible() ? "\<C-n>" : "\<Enter>"
inoremap <expr><Tab> pumvisible() ? "\<C-n>" : "\<Tab>"
inoremap <expr><Down> pumvisible() ? "\<C-n>" : "\<Down>"
inoremap <expr><Up> pumvisible() ? "\<C-p>" : "\<Up>"

" tabs
nnoremap <F2> :args *<CR>:tab all<CR>
nnoremap ' :tabe<Space>

" visual select
nnoremap <C-A> ggvG

" don't copy deleted or overwritted text
nnoremap d "_d
vnoremap d "_d
nnoremap D "_D
vnoremap D "_D
nnoremap c "_c
vnoremap c "_c
nnoremap C "_C
vnoremap C "_C
vnoremap p "_dP
vnoremap P "_dP

" file operations
nnoremap <C-W> :q<CR>
vnoremap <C-W> :q<CR>
nnoremap <C-S> :w<CR>
vnoremap <C-S> :w<CR>

" lightline
set laststatus=2
let g:lightline = {
      \ 'colorscheme': 'powerline',
      \ 'active': {
      \   'left': [ [ 'mode', 'paste' ],
      \             [ 'gitbranch', 'readonly', 'filename', 'modified' ] ]
      \ },
      \ 'component_function': {
      \   'gitbranch': 'fugitive#head'
      \ },
      \ }

" ignore function keys for input mode
inoremap <F1> <NOP>
inoremap <F2> <NOP>
inoremap <F3> <NOP>
inoremap <F4> <NOP>
inoremap <F5> <NOP>
inoremap <F6> <NOP>
inoremap <F7> <NOP>
inoremap <F8> <NOP>
inoremap <F9> <NOP>
inoremap <F10> <NOP>
inoremap <F11> <NOP>
inoremap <F12> <NOP>
inoremap <F13> <NOP>
inoremap <F14> <NOP>
inoremap <F15> <NOP>
inoremap <F16> <NOP>
inoremap <F17> <NOP>
inoremap <F18> <NOP>
inoremap <F19> <NOP>
inoremap <F20> <NOP>

" some copied from http://spf13.com/post/perfect-vimrc-vim-config-file
```