Exactly, and sometimes I don't want to save a file just for indentation to happen as a side-effect, especially if I can do `C-x H TAB` to correctly re-indent th

Exactly, and sometimes I don't want to save a file just for indentation to happen as a side-effect, especially if I can do `C-x H TAB` to correctly re-indent the entire thing. That's particularly more helpful when some formatters will actually rewrite your code to either break lines up or squish things back into a one-liner.