Ahhh, I see. Well! This patch didn't need to touch either function, so! 

Here we are. 

On Sun, Sep 24, 2017 at 9:42 AM Noam Postavsky <npostavs@users.sourceforge.net> wrote:
Ross Donaldson <gastove@gmail.com> writes:

> I was thrown off by the `prog-FOO` commands because of this message
> in the ChangeLog:
>
> ```
> 2016-03-27  Dmitry Gutov  <dgutov@yandex.ru>
>
> Remove prog-indentation-context
>
> * lisp/progmodes/prog-mode.el: (prog-indentation-context)
> (prog-first-column, prog-widen): Remove, as discussed in
> http://lists.gnu.org/archive/html/emacs-devel/2016-03/msg01425.html.
> ```

Oh, that is a bit confusing, but now I see what happened: it was indeed
removed for Emacs-25, but is still present in Emacs-26 and later.  If
you look to the end of that message you will see

        Do not merge to master.

Which gives the hint.


> I haven't assigned copyright to Emacs yet; I'd be happy to, and also,
> I suspect this patch will be quite short. I'll send it over soon.

Thanks!