Re: locked narrowing in ELisp

[Dmitry Gutov <dgutov@yandex.ru>]

On 18.08.2022 04:58, Stefan Monnier wrote:
>> Could someone give a few problem scenarios with this patch? Preferably ones
>> that should be hard to fix. Adapting isearch took about 2 lines.
> 
> I don't think there'll be much that's hard to fix, no.  The problem is
> rather that there'll be a lot to fix, so it'll basically be half-broken
> for a long time.

That is a problem indeed. So at the very least the corresponding feature 
branch would need attention from somebody (or some people) who use 
narrowing a lot.

> E.g. `C-x h M-x write-region RET` will end up writing something else
> than what I'd expect.

I see what you mean. Some region-related commands might need direct 
support indeed (region-beginning and region-end changes their return 
values once narrowing it applied).

soft-narrow-to-region might also alter the region, if we decide to 
support its programmatic application.