Re: forward-comment and syntax-ppss

[Dmitry Gutov]

On 17.12.2016 17:09, Lars Ingebrigtsen wrote:

> 1) Modes that use narrowing as a required thing for the mode to work
> properly.  The main offender here is Info-mode, and I think it should
> just be rewritten to not rely on narrowing to work.  That is: No
> Narrowing In Modes.  There's always a better way to achieve the same
> effects, I think.

Info could be implemented differently, I agree. And maybe it's a good idea.

There's no comparably powerful alternative for the multiple-major-modes 
situation, however.

> As we did with
> `(save-excursion (set-buffer...))' we could introduce a new special form
> for this behaviour, like
>
>   (with-region (point) (point-max)
>     ...)

Not sure how much that would solve. The example mentioned previously, as 
I understood it, was about users calling narrow-to-region interactively, 
and following it by another interactive function that affects all 
accessible part of the buffer.

> 3) Interactive narrowing should be stack-based, so that you can easily
> narrow to things, do something, then narrow some more, and then pop that
> narrowing to return to the previous.

This probably won't require any changes in the semantics of the 
narrowing primitives.