我的VIM配置

个人非常喜欢Vim的工作方式，所以有时间会研究一下，
下面是我自己的一些配置，我暂时没有修改vim默认的vimrc文件。

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set relativenumber      " Show relative numbers instead of absolute ones.
set nocompatible        " Disable vi compatibility.
set undolevels=200      " Number of undo levels.
set scrolloff=10        " Keep a context (rows) when scrolling vertically.
set sidescroll=5        " Keep a context (columns) when scrolling horizontally.
set tabpagemax=1000     " Maximum number of tabs to open by the -p argument.
set esckeys             " Cursor keys in insert mode.
set incsearch
set confirm             " Ask to save file before operations like :q or :e fail.


" Allow backspacing over everything in insert mode.
set backspace=indent,eol,start

" Backup and swap files.
set nobackup            " Disable backup files.
set noswapfile          " Disable swap files.
set nowritebackup       " Disable auto backup before overwriting a file.

" History
set history=1000        " Number of lines of command line history.
set viminfo='100,\"500,r/mnt,r~/mnt,r/media " Read/write a .viminfo file.
set viminfo+=h          " Do not store searches.

" Splitting.
set splitright          " Open new vertical panes in the right rather than left.
set splitbelow          " Open new horizontal panes in the bottom rather than top.

" Security.
set secure              " Forbid loading of .vimrc under $PWD.
set nomodeline          " Modelines have been a source of vulnerabilities.

syntax on
filetype indent on      " Turn off indention by filetype.
" Override the previous settings for all file types (some filetype plugins set
" these options to different values, which is really annoying).
au FileType * set autoindent nosmartindent nocindent fo+=q fo-=r fo-=o fo+=j
set laststatus=2

" Whitespace.
set tabstop=4           " Number of spaces a tab counts for.
set shiftwidth=4        " Number of spaces to use for each step of indent.
set shiftround          " Round indent to multiple of shiftwidth.
set expandtab           " Expand tab with spaces.

" Wrapping.
set wrap                " Enable text wrapping.
set linebreak           " Break after words only.
set display+=lastline   " Show as much as possible from the last shown line.
set textwidth=0         " Don't automatically wrap lines.
" Disable automatic wrapping for all files (some filetype plugins set this to
" a different value, which is really annoying).
au FileType * set textwidth=0

"------------------------------------------------------------------------------
" Typos correction.
"------------------------------------------------------------------------------

if has("multi_byte")
    " UTF-8 编码
    set encoding=utf-8
    set termencoding=utf-8
    set formatoptions+=mM
    set fencs=utf-8,gbk
    if v:lang =~? '^/(zh/)/|/(ja/)/|/(ko/)'
        set ambiwidth=double
    endif
    if has("win32")
        source $VIMRUNTIME/delmenu.vim
        source $VIMRUNTIME/menu.vim
        language messages zh_CN.utf-8
    endif
else
    echoerr "Sorry, this version of (g)vim was not compiled with +multi_byte"
endif

"---------------------------------------------
" 插件
"---------------------------------------------

" NERDTree

" 打开vim是自动打开NERDTree
" autocmd vimenter * NERDTree

" 打开编辑器时鼠标默认在编辑区域
autocmd vimenter * wincmd p

"如果打开vim的时候没有指定文件，则自动打开NERDTree
" autocmd StdinReadPre * let s:std_in=1
" autocmd VimEnter * if argc() == 0 && !exists("s:std_in") | NERDTree | endif

"如果只剩下一个NERDTree窗口，则关闭vim
autocmd bufenter * if (winnr("$") == 1 && exists("b:NERDTree") && b:NERDTree.isTabTree()) | q | endif

" 快捷键设置
map <C-b> :NERDTreeToggle<CR>

"Powerline configuration
" set guifont=Consolas_for_Powerline_FixedD:h10:cANSI
" set guifont=Liberation_Mono_for_Powerline:h10
" set encoding=utf-8
set t_Co=256
let g:Powerline_symbols = 'fancy'
let Powerline_symbols = 'compatible'