[BRLTTY] New release soon.

[Nicolas Pitre]

On Tue, 8 Oct 2024, Aura Kelloniemi wrote:

> Yes, taht's exactly what I want to change and I've done quite a bit of testing
> to find the best value for me. The braille display scrolls slower when there
> is a lot of output to the terminal which has some benefits. I have three goals
> with changing this value:
> 
> 1) When there is lots of output to the terminal, I can read at least a few
> characters out of this output when the update rate is slower. With the default
> update rate, the display flickers so fast that the dots don't have time to
> even rise fully.

Interesting point. Admitedly I prefer when my display is updated as fast 
as possible. And of course if the display flickers so fast you can't see 
anything between updates then it is most likely that sighted people 
won't be able to see anything other than a blur on the screen until it 
stabilizes either. But this certainly can be made into an option just 
like the cursor tracking delay so that no new display updates are 
considered until some grace period after the last update.

> 2) Cursor tracking works better, because not every terminal update gets
> processed by BRLTTY and as a result some temporary cursor movements do not
> trigger cursor tracking. I know there is the "Cursor tracking delay"
> preference, but its smallest value (above zero) is 250 milliseconds which is
> absolutely too much for me.

Here I don't understand. Given your explanation so far, what you do want 
is a bigger value than 250 ms not a smaller one. If you go with 500 ms 
then cursor tracking won't be considered after half a second has passed, 
etc.

> 3) This is a bit hypothetical, but I hope that due to fewer updates, the
> display battery will last longer, some power is saved and the mechanics of the
> display wear out slower.

Impact on battery should be extremely negligeable. And braille dots are 
moved by electrostatic forces so there is no real mechanics about them. 
It is more likely that braille dots will wear out over time with 
friction from your fingers. And stalled dots is typically the result of 
dust which may happen even if those dots don't move.


Nicolas