bug#69784: 29.2; Proced auto update should only update visible buffers

[Rahguzar]

Hi Eli,

Eli Zaretskii <eliz@gnu.org> writes:

>> From: Rahguzar <rahguzar@zohomail.eu>
>> Cc: 69784@debbugs.gnu.org
>> Date: Thu, 14 Mar 2024 09:54:46 +0100
>>
>> > As a user option, this sounds useful.  So please do send a patch, but
>> > please add such an option, because I can imagine users who'd like
>> > Proced buffers to be always up-to-date, regardless of whether they are
>> > displayed.
>> >
>> > Thanks.
>>
>> What about a special value 'visible' for proced-auto-update-flag instead
>> of a separate option?
>
> Yes, a good idea.
>
>> The only wrinkle might be how to set this value using
>> proced-toggle-auto-update.
>
> Make it cycle through the values?

The patch I have attached does this. I am not entirely satisfied with
with proced-toggle-auto-update so suggestions for improvement are welcome.

>> There is also the slight inconsistency that it makes
>> proced-auto-update-flag not a flag.
>
> Not a catastrophe, IMO.

Thanks,
Rahguzar

0001-Allow-for-only-auto-updating-visible-proced-buffers-.patch
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