vim filetype

vim filetype

add vim filetype check::

.vimrc +

filetype on        "filetype enable. this is call $VIMRUNTIME/filetype.vim script of file name -> file type .but this don't.call $VIMRUNTIME/srcript.vim from file content check file type.
filetype plugin on  "this is call $VIMRUNTIME/ftplugin.vim

filetype indent on  "file type auto indent.