My vim configuration (Airline + Powerline Font + NerdTree+ netrw)

.vimrc

set nocompatible
filetype indent plugin on
syn on

" vim vundle
set rtp+=~/.vim/bundle/Vundle.vim
call vundle#begin()

Plugin 'ycm-core/YouCompleteMe'
Plugin 'VundleVim/Vundle.vim'
Plugin 'preservim/nerdtree'
Plugin 'arcticicestudio/nord-vim'
Plugin 'vim-airline/vim-airline'
Plugin 'vim-airline/vim-airline-themes'
Plugin 'powerline/powerline-fonts'
Plugin 'Lokaltog/powerline'
Plugin 'rust-lang/rust.vim'
Plugin 'MarcWeber/vim-addon-mw-utils'
Plugin 'tomtom/tlib_vim'
Plugin 'thindil/robovim'
Plugin 'easymotion/vim-easymotion'
Plugin 'jiangmiao/auto-pairs'
Plugin 'dense-analysis/ale'
Plugin 'a.vim'
Plugin 'Ada-Bundle'
Plugin 'ilyachur/cmake4vim'

call vundle#end()

" vim plug
call plug#begin()

Plug 'KabbAmine/zeavim.vim'
Plug 'liuchengxu/vista.vim'
Plug 'mhinz/vim-startify'
Plug 'mhinz/vim-signify'
Plug 'skywind3000/vim-quickui'
Plug 'google/vim-maktaba'
Plug 'google/vim-glaive'
Plug 'google/vim-codefmt'
Plug 'https://gn.googlesource.com/gn', { 'rtp': 'misc/vim' }

call plug#end()

set exrc
set secure
syntax on

highlight Pmenu ctermfg=lightgrey ctermbg=black
highlight PmenuSel ctermfg=white ctermbg=gray

augroup colors
  au!
  au ColorScheme * hi whatever
augroup END

set spell spelllang=en_us
hi clear SpellBad
hi SpellBad cterm=underline
hi clear SpellRare
hi SpellRare cterm=underline
hi clear SpellCap
hi SpellCap cterm=underline
hi clear SpellLocal
hi SpellLocal cterm=underline

let g:ycm_show_diagnostics_ui = 0
let g:ycm_enable_diagnostic_signs = 0
set previewpopup=height:10,width:60
set completeopt=longest,menuone
set completepopup=height:10,width:60,border:off

set modelines=0
set number
set ruler
set visualbell
set encoding=utf-8
set wrap
set textwidth=79
set formatoptions=tcqrn1
set tabstop=4
set shiftwidth=4
set softtabstop=4
set expandtab
set noshiftround

augroup project
  autocmd!
  autocmd BufRead,BufNewFile *.h,*.c set filetype=c.doxygen
augroup END

let &path.="src/include,/usr/include/AL,"

set scrolloff=3
set backspace=indent,eol,start
set matchpairs+=<:> " use % to jump between pairs
runtime! macros/matchit.vim

nnoremap j gj
nnoremap k gk

set hidden
set ttyfast
set laststatus=2
set showmode
set showcmd

noremap <C-o> :RangerExplorer<CR>

nnoremap / /\v
vnoremap / /\v
set hlsearch
set incsearch
set ignorecase
set smartcase
set showmatch
map <leader><space> :let @/=''<cr> " clear search

inoremap <F1> <ESC>:set invfullscreen<CR>a
nnoremap <F1> :set invfullscreen<CR>
vnoremap <F1> :set invfullscreen<CR>

map <leader>q gqip
set listchars=tab:▸\ ,eol:¬
map <leader>l :set list!<CR> " Toggle tabs and EOL

set t_Co=256
set background=dark
let g:solarized_termcolors=256
let g:solarized_termtrans=1

set cmdheight=2

nnoremap <leader>n :NERDTreeFocus<CR>
nnoremap <C-n> :NERDTree<CR>
nnoremap <C-t> :NERDTreeToggle<CR>
nnoremap <C-f> :NERDTreeFind<CR>

" Start NERDTree and leave the cursor in it.
autocmd VimEnter * NERDTree

" Start NERDTree and put the cursor back in the other window.
autocmd VimEnter * NERDTree | wincmd p

" Start NERDTree when Vim is started without file arguments.
autocmd StdinReadPre * let s:std_in=1
autocmd VimEnter * if argc() == 0 && !exists('s:std_in') | NERDTree | endif

" Start NERDTree. If a file is specified, move the cursor to its window.
autocmd StdinReadPre * let s:std_in=1
autocmd VimEnter * NERDTree | if argc() > 0 || exists("s:std_in") | wincmd p | endif

" Start NERDTree, unless a file or session is specified, eg. vim -S session_file.vim.
autocmd StdinReadPre * let s:std_in=1
autocmd VimEnter * if argc() == 0 && !exists('s:std_in') && v:this_session == '' | NERDTree | endif

" Start NERDTree when Vim starts with a directory argument.
autocmd StdinReadPre * let s:std_in=1
autocmd VimEnter * if argc() == 1 && isdirectory(argv()[0]) && !exists('s:std_in') |
    \ execute 'NERDTree' argv()[0] | wincmd p | enew | execute 'cd '.argv()[0] | endif

" Exit Vim if NERDTree is the only window remaining in the only tab.
autocmd BufEnter * if tabpagenr('$') == 1 && winnr('$') == 1 && exists('b:NERDTree') && b:NERDTree.isTabTree() | quit | endif

" Close the tab if NERDTree is the only window remaining in it.
autocmd BufEnter * if winnr('$') == 1 && exists('b:NERDTree') && b:NERDTree.isTabTree() | quit | endif

" If another buffer tries to replace NERDTree, put it in the other window, and bring back NERDTree.
autocmd BufEnter * if bufname('#') =~ 'NERD_tree_\d\+' && bufname('%') !~ 'NERD_tree_\d\+' && winnr('$') > 1 |
    \ let buf=bufnr() | buffer# | execute "normal! \<C-W>w" | execute 'buffer'.buf | endif

" Open the existing NERDTree on each new tab.
autocmd BufWinEnter * if getcmdwintype() == '' | silent NERDTreeMirror | endif

" Mirror the NERDTree before showing it. This makes it the same on all tabs.
nnoremap <C-n> :NERDTreeMirror<CR>:NERDTreeFocus<CR>

let g:NERDTreeDirArrowExpandable = '▸'
let g:NERDTreeDirArrowCollapsible = '▾'

let g:rust_clip_command = 'xclip -selection clipboard'

set laststatus=2

" How each level is indented and what to prepend.
" This could make the display more compact or more spacious.
" e.g., more compact: ["▸ ", ""]
" Note: this option only works for the kind renderer, not the tree renderer.
let g:vista_icon_indent = ["╰─▸ ", "├─▸ "]

" Executive used when opening vista sidebar without specifying it.
" See all the avaliable executives via `:echo g:vista#executives`.
let g:vista_default_executive = 'ctags'

" Set the executive for some filetypes explicitly. Use the explicit executive
" instead of the default one for these filetypes when using `:Vista` without
" specifying the executive.
let g:vista_executive_for = {
  \ 'cpp': 'vim_lsp',
  \ 'php': 'vim_lsp',
  \ }

" Declare the command including the executable and options used to generate ctags output
" for some certain filetypes.The file path will be appened to your custom command.
" For example:
let g:vista_ctags_cmd = {
      \ 'haskell': 'hasktags -x -o - -c',
      \ }

" To enable fzf's preview window set g:vista_fzf_preview.
" The elements of g:vista_fzf_preview will be passed as arguments to fzf#vim#with_preview()
" For example:
let g:vista_fzf_preview = ['right:50%']

" Ensure you have installed some decent font to show these pretty symbols, then you can enable icon for the kind.
let g:vista#renderer#enable_icon = 1

" The default icons can't be suitable for all the filetypes, you can extend it as you wish.
let g:vista#renderer#icons = {
\   "function": "\uf794",
\   "variable": "\uf71b",
\  }

" default updatetime 4000ms is not good for async update
set updatetime=100

" Require tpope/vim-repeat to enable dot repeat support
" Jump to anywhere with only `s{char}{target}`
" `s<CR>` repeat last find motion.
nmap s <Plug>(easymotion-s)
" Bidirectional & within line 't' motion
omap t <Plug>(easymotion-bd-tl)
" Use uppercase target labels and type as a lower case
let g:EasyMotion_use_upper = 1
 " type `l` and match `l`&`L`
let g:EasyMotion_smartcase = 1
" Smartsign (type `3` and match `3`&`#`)
let g:EasyMotion_use_smartsign_us = 1

" Fix files with prettier, and then ESLint.
let b:ale_fixers = ['prettier', 'eslint']
" Equivalent to the above.
let b:ale_fixers = {'javascript': ['prettier', 'eslint']}


" <Leader>f{char} to move to {char}
map  <Leader>f <Plug>(easymotion-bd-f)
nmap <Leader>f <Plug>(easymotion-overwin-f)

" s{char}{char} to move to {char}{char}
nmap s <Plug>(easymotion-overwin-f2)

" Move to line
map <Leader>L <Plug>(easymotion-bd-jk)
nmap <Leader>L <Plug>(easymotion-overwin-line)

" Move to word
map  <Leader>w <Plug>(easymotion-bd-w)
nmap <Leader>w <Plug>(easymotion-overwin-w)

" Function to open the file or NERDTree or netrw.
" Returns: 1 if either file explorer was opened; otherwise, 0.
function! s:OpenFileOrExplorer(...)
    if a:0 == 0 || a:1 == ''
        NERDTree
    elseif filereadable(a:1)
        execute 'edit '.a:1
        return 0
    elseif a:1 =~? '^\(scp\|ftp\)://' " Add other protocols as needed.
        execute 'Vexplore '.a:1
    elseif isdirectory(a:1)
        execute 'NERDTree '.a:1
    endif
    return 1
endfunction

let g:airline_theme='badwolf'
let g:airline#extensions#tabline#enabled=1
let g:airline#extensions#tabline#formatter='unique_tail'
let g:airline_powerline_fonts=1

"""""""""""" Start Powerline Settings """"""""""""""""

set guifont=Inconsolata\ for\ Powerline:h15
let g:Powerline_symbols = 'fancy'
set encoding=utf-8
set t_Co=256
set fillchars+=stl:\ ,stlnc:\
set term=xterm-256color
set termencoding=utf-8

if has("gui_running")
    let s:uname = system("uname")
    if s:uname == "Darwin\n"
        set guifont=Source\ Code\ Pro\ for\ Powerline:h15
        colorscheme PaperColor              " set color scheme
    endif
endif

" Auto commands to handle OS commandline arguments
autocmd StdinReadPre * let s:std_in=1
autocmd VimEnter * if argc()==1 && !exists('s:std_in') | if <SID>OpenFileOrExplorer(argv()[0]) | wincmd p | enew | wincmd p | endif | endif

" Command to call the OpenFileOrExplorer function.
command! -n=? -complete=file -bar Edit :call <SID>OpenFileOrExplorer('<args>')

" Command-mode abbreviation to replace the :edit Vim command.
cnoreabbrev e Edit