bug#37183: 26.2 Never for Tab-Always-Indent

[Stefan Kangas]

Lars Ingebrigtsen <larsi@gnus.org> writes:

> I'm not sure that's worth it if there is a simple way of binding TAB.
> We could just mention that in the doc string of `tab-always-indent'.

True.  I think adding it to the doc string makes a great deal of sense.

We should also consider that this will likely only ever be used by a
small minority of users.