Indentation can insert tabs if this is non-nil.
nil means indentation cannot use tabs. I need the opposite of this option, prevent indentation from using spaces as tabs.
I need this to match a formatting convention (eclipse) where tabs are mandatory.
What is the simplest way to achieve this? I'm using plain
java-mode, whose tab is bound to
(c-indent-line-or-region &optional ARG REGION), which seems to use
(symbol-function 'indent-according-to-mode), which eventually uses
c-shift-line-indentation, but I don't see any options to configure using tabs only. Am I looking in the wrong place?