vim设置默认utf-8编码

很简单：将上面的配置追加到 ~/.vimrc 文件中；然后重新vim打开文件就可以了。

" =====================
" 多语言环境
" 默认为 UTF-8 编码
" =====================
if has("multi_byte")
    set encoding=utf-8
    " English messages only
    "language messages zh_CN.utf-8
  
    if has('win32')
        language english
        let &termencoding=&encoding
    endif
  
    set fencs=ucs-bom,utf-8,gbk,cp936,latin1
    set formatoptions+=mM
    set nobomb " 不使用 Unicode 签名
  
    if v:lang =~? '^(zh)|(ja)|(ko)'
        set ambiwidth=double
    endif
else
    echoerr "Sorry, this version of (g)vim was not compiled with +multi_byte"
endif