Vim-go-使用制表符而不是空格缩进

I'd like to have my go files indented with tabs not whitespaces. When I run :set expandtab then :retab I get what I want but it automatically switches back to an indentation with whitespaces everytime I save the file.

I am using the vim-go plugin but I couldn't find anything in the doc/code which could lead to this issue. I have tried changing to setlocal noexpandtab in ftplugin/go.vim but it didn't work

How can I change this?

Many thanks

Put that in the ~/.vimrc file to make the settings permanent. Here's a wiki article on this - http://vim.wikia.com/wiki/Indent_with_tabs,_align_with_spaces