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

[Eli Zaretskii]

On December 4, 2017 11:52:26 PM GMT+02:00, Dmitry Gutov <address@hidden> wrote:
> On 12/4/17 7:28 PM, Eli Zaretskii wrote:
> 
> >> The widening is done in indent-according-to-mode and brings into
> view
> >> the whole multi-mode buffer, indeed.  Then MMM's
> indent-line-function is
> >> called, which narrows the buffer to the relevant chunk and then
> calls
> >> the submode's indent-line-function which hence only sees the part
> of the
> >> buffer it needs.
> > 
> > Ah, so this assumes that MMM is active in the buffer?  If so, can we
> > widen only if MMM is indeed active?  Doing so will I believe
> minimize
> > (or even eliminate) the effects on existing behaviors when MMM is
> not
> > used.
> 
> That widening is for correctness when working during an interactive 
> narrowing. MMM mode being enabled or not is irrelevant (it's not the 
> beneficiary).

I understand that you and Stefan think so, but doing that unconditionally
means these changes cannot be committed to emacs-26.  I was
trying to find a way of squeezing them into the release branch, but if
you think there's no way, it's fine with me to have this on master.