vim 编辑时 ，tab键，就出现这么一行，什么情况?
➜ ~ vim ./
_arguments:450: _vim_files: function definition file not found
_arguments:450: _vim_files: function definition file not found
_arguments:450: _vim_files: function definition file not found
➜ ~ vim ./
vim 编辑时 ，tab键，就出现这么一行，什么情况?
➜ ~ vim ./
_arguments:450: _vim_files: function definition file not found
_arguments:450: _vim_files: function definition file not found
_arguments:450: _vim_files: function definition file not found
➜ ~ vim ./