Re: Debouncing slow mode line constructs (was: Emacs design and architecture. How about copy-on-write?)

[Ihor Radchenko]

Eli Zaretskii <eliz@gnu.org> writes:

>> What I thought is a redisplay optimization is different - `vc-mode'
>> variable used to display VC status is not updated on every redisplay.
>> Instead, it is modified when visiting a file and when saving a file.
>> The end result is the same - VC status is not always up-to-date.
>> 
>> Similar approach is often used by other well-optimized mode-line
>> constructs, leading to sometimes-outdated mode-line.
>
> These are not problems with display, these are problems with the modes
> which define and calculate the respective mode-line variables.

I would not call my example a "problem with the mode". There is simply
no easy way to make git process call faster. So, a compromise is chosen
to not affect Emacs performance.

I am proposing a similar compromise to improve default experience.

-- 
Ihor Radchenko // yantar92,
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