my .vimrc file

.vimrc

set runtimepath^=~/.vim/bundle/ctrlp.vim
let g:ctrlp_custom_ignore = 'node_modules\|DS_Store\|git\|target'

call pathogen#infect()
call pathogen#helptags()
set nocompatible
filetype on
filetype plugin on
syntax on

" ****
" **** TAB-related
" ****
set autoindent
set tabstop=2
set shiftwidth=2

" *** Remove trailing white spaces with one key stroke!
nmap _ :%s/\s\+$//<CR>:w<CR>
" *** Retab with one key stroke!nmap - :retab!<CR>:w<CR>

highlight ExtraWhitespace ctermbg=red guibg=blue

" --- DON'T need to change above when switching between spaces and tabs.
"

" STEP 1.
" Use TABS (not spaces).
set noexpandtab

" Use spaces NOT TABS.
"set expandtab
" STEP 2.
" *** Highlight trailing spaces & TABS in the beginning of the line.
"match ExtraWhitespace /\s\+$\|^  \+/

" *** Highlight  trailing spaces & SPACES in the beginning of the line.
match ExtraWhitespace /\s\+$\|^ \+/

set number
set smartcase
set statusline=%<%f\%h%m%r%=%-20.(\ \ line=%l\ \ col=%c%V\ \ totlin=%L%)\ \ \%h%
m%r%=%-40(bytval=0x%B,%n%Y%)\%P
set noautoindent
set nocindent

set hlsearch

function Send_to_Screen(text)
  if !exists("g:screen_sessionname") || !exists("g:screen_windowname")
    call Screen_Vars()
  end

  echo system("screen -S " . g:screen_sessionname . " -p " . g:screen_windowname . " -X stuff '" . substitute(a:text, "'", "'\\\\''", 'g') . "'")
endfunction

function Screen_Session_Names(A,L,P)
  return system("screen -ls | awk '/Attached/ {print $1}'")
endfunction

function Screen_Vars()
  if !exists("g:screen_sessionname") || !exists("g:screen_windowname")
    let g:screen_sessionname = ""
    let g:screen_windowname = "0"
  end

  let g:screen_sessionname = input("session name: ", "", "custom,Screen_Session_Names")
  let g:screen_windowname = input("window name: ", g:screen_windowname)
endfunction

""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""

vmap <C-c><C-c> "ry :call Send_to_Screen(@r)<CR>
nmap <C-c><C-c> vip<C-c><C-c>
nmap <C-c>v :call Screen_Vars()<CR>

set laststatus=2
syn match WhiteSpace / / containedin=ALL conceal cchar=Æ
setl conceallevel=2 concealcursor=nv