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

[Stefan Monnier]

> Using narrowing for marking the bounds of a sub-mode is a bad thing,
> since it is likely to cause contention with other uses of narrowing.

Dmitry's solution to this threat is to say that indent-line-function
should always be called fully-widened, so there can be no "other uses of
narrowing" that can get in the way.

> It's not clear what is meant here, but mandating maintainers of major
> modes to use narrowing in a particular way is at best controversial, and
> probably will render many major modes non-functional.

It doesn't mandate that major modes use narrowing.  Quite the opposite:
it says "don't touch narrowing inside your indentation function (unless
you know what you're doing), because it's already setup for you".


        Stefan