Re: 27.0.50: How can I test a buffer-local window-configuration-change-hook in batch mode?

[Stefan Monnier]

>> I don't think long lines pose any performance problems in buffers
>> which are never displayed
>
> You are wrong: it will cause problems in any function that uses the
> display code, even if nothing is displayed.  For example,
> vertical-motion, next-line, posn-at-point, etc. all use the display
> code internally.

In theory you're right.  But I think in practice "buffers that aren't
displayed" is a pretty good approximation of "so-long won't help".

>> I've not been able to spot any down-sides to the change, so I'm pretty
>> sure it's the right thing to do.
> Well, one downside is that you now need to use a hook that was not
> really meant for that, or we'd need to introduce yet another hook.

I missed something: which new hook would be needed?


        Stefan