My vimrc

.vimrc

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" => General
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" Sets how many lines of history VIM has to remember
set history=500

" Enable filetype plugins
filetype plugin on
filetype indent on

" Set to auto read when a file is changed from the outside
set autoread

" With a map leader it's possible to do extra key combinations
" like <leader>w saves the current file
let mapleader = ","
let g:mapleader = ","

" Fast saving
nmap <leader>w :w!<cr>
nmap <leader>q :q<cr>

" :W sudo saves the file 
" (useful for handling the permission-denied error)
command W w !sudo tee % > /dev/null

" Paste mode toggle
set pastetoggle=<leader>p

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" => VIM user interface
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" Set 7 lines to the cursor - when moving vertically using j/k
set so=7

" Turn on the WiLd menu
set wildmenu

"Always show current position
set ruler

" Height of the command bar
set cmdheight=2

" A buffer becomes hidden when it is abandoned
set hid

" Configure backspace so it acts as it should act
set backspace=eol,start,indent
set whichwrap+=<,>,h,l"

" Ignore case when searching
set ignorecase

" When searching try to be smart about cases 
set smartcase

" Highlight search results
set hlsearch

" Makes search act like search in modern browsers
set incsearch 

" Don't redraw while executing macros (good performance config)
set lazyredraw 

" For regular expressions turn magic on
set magic

" Show matching brackets when text indicator is over them
set showmatch 
" How many tenths of a second to blink when matching brackets
set mat=2

" Add a bit extra margin to the left
set foldcolumn=1

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" => Colors and Fonts
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" Enable syntax highlighting
syntax enable 
"
try
    colorscheme desert
catch
endtry

set background=dark

" Set utf8 as standard encoding and en_US as the standard language
set encoding=utf8

" Use Unix as the standard file type
set ffs=unix,dos,mac

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" => Files, backups and undo
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" Turn backup off, since most stuff is in SVN, git et.c anyway...
set nobackup
set nowb
set noswapfile

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" => Text, tab and indent related
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" Use spaces instead of tabs
set expandtab

" Be smart when using tabs ;)
set smarttab

" 1 tab == 4 spaces
set shiftwidth=4
set tabstop=4

" Linebreak on 500 characters
set lbr
set tw=500

set ai "Auto indent
set si "Smart indent
set wrap "Wrap lines

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" => Visual mode related
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" Visual mode pressing * or # searches for the current selection
" Super useful! From an idea by Michael Naumann
vnoremap <silent> * :<C-u>call VisualSelection(', ')<CR>/<C-R>=@/<CR><CR>
vnoremap <silent> # :<C-u>call VisualSelection(', ')<CR>?<C-R>=@/<CR><CR>

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" => Moving around, tabs, windows and buffers
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" Map <Space> to / (search) and Ctrl-<Space> to ? (backwards search)
map <space> /
map <c-space> ?

" Disable highlight when <leader><cr> is pressed
map <silent> <leader><cr> :noh<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

" Close the current buffer
map <leader>bd :Bclose<cr>:tabclose<cr>gT

" Close all the buffers
map <leader>ba :bufdo bd<cr>

map <leader>l :bnext<cr>
map <leader>h :bprevious<cr>

" Useful mappings for managing tabs
map <leader>tn :tabnew<cr>
map <leader>to :tabonly<cr>
map <leader>tc :tabclose<cr>
map <leader>tm :tabmove 
map <leader>t<leader> :tabnext 

" Let 'tl' toggle between this and the last accessed tab
let g:lasttab = 1
nmap <Leader>tl :exe "tabn ".g:lasttab<CR>
au TabLeave * let g:lasttab = tabpagenr()

" Switch CWD to the directory of the open buffer
map <leader>cd :cd %:p:h<cr>:pwd<cr>

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" => Status line
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" Always show the status line
set laststatus=2

" Format the status line
set statusline=\ %{HasPaste()}%F%m%r%h\ %w\ \ CWD:\ %r%{getcwd()}%h\ \ \ Line:\ %l\ \ Column:\ %c

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" => Helper functions
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function! CmdLine(str)
    exe "menu Foo.Bar :" . a:str
    emenu Foo.Bar
    unmenu Foo
endfunction

function! VisualSelection(direction) range
    let l:saved_reg = @"
    execute "normal! vgvy"

    let l:pattern = escape(@", '\\/.*$^~[]')
    let l:pattern = substitute(l:pattern, "\n$", "", "")

    if a:direction == 'b'
        execute "normal ?" . l:pattern . "^M"
    elseif a:direction == 'gv'
        call CmdLine("vimgrep " . '/'. l:pattern . '/' . ' **/*.')
    elseif a:direction == 'replace'
        call CmdLine("%s" . '/'. l:pattern . '/')
    elseif a:direction == 'f'
        execute "normal /" . l:pattern . "^M"
    endif

    let @/ = l:pattern
    let @" = l:saved_reg
endfunction


" Returns true if paste mode is enabled
function! HasPaste()
    if &paste
        return 'PASTE MODE  '
    en
    return ''
endfunction

" Don't close window, when deleting a buffer
command! Bclose call <SID>BufcloseCloseIt()
function! <SID>BufcloseCloseIt()
   let l:currentBufNum = bufnr("%")
   let l:alternateBufNum = bufnr("#")

   if buflisted(l:alternateBufNum)
     buffer #
   else
     bnext
   endif

   if bufnr("%") == l:currentBufNum
     new
   endif

   if buflisted(l:currentBufNum)
     execute("bdelete! ".l:currentBufNum)
   endif
endfunction

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" => Nerd Tree
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let g:NERDTreeWinPos = "left"
let NERDTreeShowHidden=0
let NERDTreeIgnore = ['\.pyc$', '__pycache__']
let g:NERDTreeWinSize=35
map <leader>nn :NERDTreeToggle<cr>
map <leader>nb :NERDTreeFromBookmark
map <leader>nf :NERDTreeFind<cr>

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" => Custom 
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execute pathogen#infect()
set number
set shell=bash
set showtabline=2
xnoremap p pgvy

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" => GO 
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let g:go_disable_autoinstall = 0

" Highlight
let g:go_fmt_command = "goimports"
let g:go_highlight_functions = 1  
let g:go_highlight_methods = 1  
let g:go_highlight_structs = 1  
let g:go_highlight_operators = 1  
let g:go_highlight_build_constraints = 1  

map <leader>gb :GoBuild<cr>
map <leader>gd :GoDoc<cr>
map <leader>gc :GoCallers<cr>
map <leader>gi :GoImports<cr>

nmap <F8> :TagbarToggle<CR>

let g:tagbar_type_go = {  
    \ 'ctagstype' : 'go',
    \ 'kinds'     : [
        \ 'p:package',
        \ 'i:imports:1',
        \ 'c:constants',
        \ 'v:variables',
        \ 't:types',
        \ 'n:interfaces',
        \ 'w:fields',
        \ 'e:embedded',
        \ 'm:methods',
        \ 'r:constructor',
        \ 'f:functions'
    \ ],
    \ 'sro' : '.',
    \ 'kind2scope' : {
        \ 't' : 'ctype',
        \ 'n' : 'ntype'
    \ },
    \ 'scope2kind' : {
        \ 'ctype' : 't',
        \ 'ntype' : 'n'
    \ },
    \ 'ctagsbin'  : 'gotags',
    \ 'ctagsargs' : '-sort -silent'
\ }