Re: [Emacs-diffs] scratch/widen-less a4ba846: Replace prog-widen with consolidating widen calls

[Ingo Lohmar <i.lohmar@gmail.com>]

On Tue, Dec 05 2017 20:48 (+0000), Eli Zaretskii wrote:

> To make myself clear: I'd like to see your changes land in a way that as much as possible doesn't remove prog-indentation-context except where there's a clear and present contradiction.

Previously I dabbled with mmm-mode and even maintained an unpublished
fork to fix some shortcomings.  Therefore I followed this and the
related threads with quite some interest.

Apologies if I misunderstood or if this is just noise (in which case
simply ignore my message), but I have only seen this point briefly
raised in passing, and it appears to be very important:

1. I gathered that from what is known now, prog-indentation-context
   cannot provide all that which multiple major mode frameworks
   need/want from Emacs core.

2. Also, it is not orthogonal, but rather incompatible with all other
   proposals (be they concrete or vague) discussed thus far.

So if we really want to facilitate mmm-like frameworks (which is
wonderful and surely a great thing to do), prog-indentation-context will
have to be removed whenever that happens.

Since it's not in any released version yet, it seems obvious to me that
it should be removed right now, or else it will be "in the wild".  And
then it will be much more awkward to remove it in the next release (and
I would assume that you will strongly object to removing it then).

What am I missing here?