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Re: Should `revert-buffer' preserve text-scaling by default?

From: Michael Albinus
Subject: Re: Should `revert-buffer' preserve text-scaling by default?
Date: Sun, 01 Dec 2019 11:27:08 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux)

Stefan Kangas <address@hidden> writes:

>> So going back to the previous proposal seems like the best approach,
>> because it allows us to change just the buggy behavior(s) and
>> nothing else.  To reiterate: that proposal is to have a new list
>> variable `revert-buffer-preserved-modes', whose default value
>> includes these modes:
>>   `text-scale-mode'
>>   `display-line-numbers-mode'
>>   `display-fill-column-indicator-mode'
>>   `hl-line-mode' (maybe?)
>> Over time we could adjust the default contents of this list, of course.
>> I would also like to hear what others here think, both about the overall 
>> idea and about what modes should be in that list.
> Since you are asking for opinions:
> The bug you originally mentioned with text-scale-mode and
> revert-buffer is incredibly frustrating.  I incorrectly assumed there
> was a good reason for the behaviour, and never bothered looked into
> it.  So thank you for doing that.
> I agree that all four modes above should stay enabled on
> revert-buffer, including hl-line-mode.

I haven't tested, but wouldn't it be sufficient if these minor modes
add the `permanent-local' property to their buffer-local variables?

> Best regards,
> Stefan Kangas

Best regards, Michael.

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