Vim indent xml file

Question

I am learning Vim but I thought this was a simple task but I cannot get it to work. I have browser SO but the solutions are not working for me.

I am trying to correc

Answer 1

In VIM, I auto-indent the whole file (using hard tabs) using the following command:

:%!XMLLINT_INDENT="^I" xmllint --format -

The ^I is a single character you generate via: CTRL+v,CTRL+i