My vim editor vimrc file. compatible with liunx and windows

vimrc

"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" Sections:
"    -> General
"    -> VIM user interface
"    -> Colors and Fonts
"    -> Files and backups
"    -> Text, tab and indent related
"    -> Visual mode related
"    -> Moving around, tabs and buffers
"    -> Status line
"    -> Editing mappings
"    -> vimgrep searching and cope displaying
"    -> Spell checking
"    -> Misc
"    -> Helper functions
"
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" Test Platform
function! MySys()
	if has("win32")
		return "windows"
	else
		return "linux"
	endif
endfunction


""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" General
""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
set nu
set mouse=a
set history=100

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

" Enable filetype plugins
filetype plugin on
filetype indent on

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

if MySys() == 'linux'
	"Fast reloading of the .vimrc
	map <silent> <leader>ss :source ~/.vimrc<cr>
	"Fast editing of .vimrc
	map <silent> <leader>ee :e ~/.vimrc<cr>
	"When .vimrc is edited, reload it
	autocmd! bufwritepost .vimrc source ~/.vimrc
elseif MySys() == 'windows'
   "Fast reloading of the _vimrc
		map <silent> <leader>ss :source ~/_vimrc<cr>
    "Fast editing of _vimrc
    map <silent> <leader>ee :call SwitchToBuf("~/_vimrc")<cr>
    "When _vimrc is edited, reload it
    autocmd! bufwritepost _vimrc source ~/_vimrc

	source $VIMRUNTIME/vimrc_example.vim
	source $VIMRUNTIME/mswin.vim
	behave mswin
endif
		
" Fast saving
nmap <leader>w :w!<cr>


""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" VIM user interface
""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" Set 7 lines to the cursor
set so=7

"? Tuen on the wild menu
set wildmenu

" Ignore compiled files
set wildignore=*.o,*~,*.pyc

" Always show current position
set ruler

" Height of the command bar
set cmdheight=1

" 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

" Hightlight 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

" No annoying sound on errors
set noerrorbells
set novisualbell
set t_vb=
set tm=500

" Background transparency settings
if MySys() == 'windows'
	map <silent> <F10> :call SetAlpha()<CR>
	map <silent> <S-F12> :call ChangeAlpha(1)<CR>
	map <silent> <S-F11> :call ChangeAlpha(0)<CR>
	let g:alpha=255
	let g:alpha_t=210
	let g:alpha_s=15
	"no menu, no toolbar
	set go=
endif

""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" Colors and Fonts 
""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" Enable syntax highlighting
syntax enable

if MySys() == 'linux'
	set t_Co=256
	colorscheme desert
	set background=dark
	" Set utf8 as standard encoding and en_US as standard language
	set encoding=utf8
	" Use Unix as the standard file type
	set ffs=unix,dos,mac
elseif MySys() == 'windows'
	colorscheme slate3 "solarized  molokai 
	set background=dark
	let g:solarized_termcolors=256
	set guifont=monaco:h9
	set encoding=utf-8
	set fileencodings=utf-8,chinese,latin-1
	let &termencoding=&encoding
	source $VIMRUNTIME/delmenu.vim
	language messages zh_CN.utf-8
endif

" Set extra options when running in GUI mode
if has("gui_running")
	set guioptions-=T
	set guioptions+=e
	set guitablabel=%M\ %t
endif

""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" Files, backups and undo 
""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" Turn backup off
set nobackup
set nowb
set noswapfile



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

" Be smart when using tab
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


""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" Visual mode related 
""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" Visual mode pressing * or # searches for the current selection
vnoremap <silent> * :call VisualSelection('f')<CR>
vnoremap <silent> # :call VisualSelection('b')<CR>


""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" Moving around, tabs, windows and buffers 
""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" Treat long lines as break lines
map j gj
map k gk

" Map <space> to /(search) and Ctrl-<Space> to ?
map <space> /
map <c-space> ?

" Disable hightlight 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>

" Close all the buffers
"map <leader>ba :1,1000 bd!<cr>

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

" Open a new tab with the current buffer's path
map <leader>te :tabedit <c-r>=expand("%:p:h")<cr>/

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

" Spectify the behavior when switching between buffers
try
	set switchbuf=useopen,usetab,newtab
	set stal=2
catch
endtry

" Return to last edit position when opening files
autocmd BufReadPost *
	\ if line("'\"") > 0 && line("'\"") <= line("$") |
	\	exe "normal! g`\"" |
	\ endif
" Remember info about open buffers on close
set viminfo^=%



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

" Format the status line
"set statusline=%<%F%h%m%r%h%w%y\ %{&ff}\ %{strftime(\"%Y/%m/%d-%H:%M\")}%=\ col:%c%V\ \ pos:%o\ Line:%l\,%L\ %P
" set statusline=\ %{HasPaste()}%F%m%r%h\ %w\ \ CWD:\ %r%{getcwd()}%h\ \ \ Line:\ %l
set statusline=%f<%F%h%m%r%h%w%y\ %{&ff}\ %{strftime(\"%Y/%m/%d-%H:%M\")}%=\ CWD:\%r%{getcwd()}%h\ \ Line:%l\ \ %P


""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" Editing mappings 
""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" Remap VIM 0 to first non-blank character
"map 0 ^

" Delete trailing white space on save, useful for Python and coffeeScript
function! DeleteTrailingWS()
	exe "normal mz"
	%s/\s\+$//ge
	exe "normal `z"
endfunction
autocmd BufWrite *.py :call DeleteTrailingWS()
autocmd BufWrite *.coffee :call DeleteTrailingWS()


""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" vimgrep searching and cope displaying 
""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" When you press gv you vimgrep after the selected text
"vnoremap <silent> gv :call VisualSelection('gv')<CR>

" Open vimgrep and put the cursor in the right position
"map <leader>g :vimgrep // **/*.<left><left><left><left><left><left><left>



""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" Spell checking 
""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" Press ,ssp will toggle and untoggle spell checking
map <leader>ssp :setlocal spell!<cr>

set compatible "open vi compatiable function
set showcmd
set foldcolumn=3


if v:lang =~ "utf8$" || v:lang =~ "UTF-8$"
	set fileencodings=utf-8,latin1
endif

set nocompatible	" Use Vim defaults (much better!)
set bs=indent,eol,start		" allow backspacing over everything in insert mode
set viminfo='20,\"50	" read/write a .viminfo file, don't store more
			" than 50 lines of registers

if has("cscope") && filereadable("/usr/bin/cscope")
   set csprg=/usr/bin/cscope
   set csto=0
   set cst
   set nocsverb
   " add any database in current directory
   if filereadable("cscope.out")
      cs add cscope.out
   " else add database pointed to by environment
   elseif $CSCOPE_DB != ""
      cs add $CSCOPE_DB
   endif
   set csverb
endif

" Switch syntax highlighting on, when the terminal has colors
" Also switch on highlighting the last used search pattern.
if &t_Co > 2 || has("gui_running")
	syntax on
	set hlsearch
endif

if &term=="xterm"
	set t_Co=8
	set t_Sb=[4%dm
	set t_Sf=[3%dm
endif


"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
" Helper Functions
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""

function! SwitchToBuf(filename)
    "let fullfn = substitute(a:filename, "^\\~/", $HOME . "/", "")
    " find in current tab
    let bufwinnr = bufwinnr(a:filename)
    if bufwinnr != -1
        exec bufwinnr . "wincmd w"
        return
    else
        " find in each tab
        tabfirst
        let tab = 1
        while tab <= tabpagenr("$")
            let bufwinnr = bufwinnr(a:filename)
            if bufwinnr != -1
                exec "normal " . tab . "gt"
                exec bufwinnr . "wincmd w"
                return
            endif
            tabnext
            let tab = tab + 1
        endwhile
        " not exist, new tab
        exec "tabnew " . a:filename
    endif
endfunction

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

" Visual Selection
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

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

function! SetAlpha(...)
	if !exists("a:1")
		let a = (g:alpha==255) ? g:alpha_t : 255
		call libcallnr("vimtweak.dll", "SetAlpha", a)
		let g:alpha=a
		unlet a
	else
		call libcallnr("vimtweak.dll", "SetAlpha", a:1)
	endif
endfunction

function! ChangeAlpha(change)
	if a:change == 1
		let g:alpha = (g:alpha<=(255-g:alpha_s)) ? (g:alpha+g:alpha_s) : 255
		let g:alpha_t = g:alpha
	endif
	if a:change == 0
		let g:alpha = (g:alpha>=(10+g:alpha_s)) ? (g:alpha-g:alpha_s) : 10
		let g:alpha_t = g:alpha
	endif
	call SetAlpha(g:alpha)
endfunction
 
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""

autocmd BufRead *.py set makeprg=python\ -c\ \"import\ py_compile,sys;\ sys.stderr=sys.stdout;\ py_compile.compile(r'%')\"
autocmd BufRead *.py set efm=%C\ %.%#,%A\ \ File\ \"%f\"\\,\ line\ %l%.%#,%Z%[%^\ ]%\\@=%m
autocmd BufRead *.py nmap <F5> :!python %<CR>
autocmd BufRead *.py nmap <F6> :make<CR>
autocmd BufRead *.py copen