There is a particular input method for Hindi language (or Devanagiri script), known as Bolnagri. It is very convenient to type using this method and it comes by default on Ubuntu.
However, in Emacs, there are 4 input methods for typing in Devanagiri, but none of them is Bolnagri. That is when I press
C-x RET C-\, I don't see any "Bolnagri" in the options.
How can I get this Bolnagri input method to work in Emacs?