[BRLTTY] Slow cursor routing

[Dave Mielke]

[quoted lines by Vikash Kesarwani on 2018/06/05 at 13:24 +0530]

>    Since it takes some time to move cursor, so braille window keeps
>changing, and so does my braille display.

I suppose there's a possibility that something in 5.4 is seriously wrong with
cursor routing, although I don't think there is. I just tested cursor routing
with the latest code. It's fast. On Linux, when I request the cursor to be
routed 20 characters to the right (I think that's what you aid), what I observe
on the braille display is an instant jump. No slow motion, no constant rewrites
of the display, etc. If your driver is strictly doing no more than what a
driver should be doing then you should be observing the very same good
performance.

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