Windows keyboard restrictions

Doug Ewell doug at
Fri Aug 7 17:21:16 CDT 2015

Marcel Schneider <charupdate at orange dot fr> wrote:

> I brought the good news that SIXTEEN UNICODE CODE POINTS can be
> generated by a single key stroke on Windows six dot one. The only bad
> news, because of which I've e-mailed to the List, is that that wasn't
> working in one single circumstance. It was obvious that the main thing
> to do, is to inform about this fact, so that other people mustn't
> search for a bug in the driver if it's only that.

But that's what I've been trying to say. The maximum isn't 16, it's 4.
"That wasn't working" is the expected behavior here.

If you were able to create a keyboard layout where 16 code points ever
worked on Windows 7 (which reports itself as "6.1"), it was purely by
accident -- because Windows 7 did not check for the overrun, and because
the overrun did not happen to cause any collateral damage.

If you have a light bulb that's rated for 110 volts, and you apply 220
volts to it and for some reason the bulb doesn't burn out immediately,
that doesn't mean 220 volts is the correct operating environment for
that bulb. It means you got lucky.

If there's a bug here, it's that Windows didn't detect that the limit
had been exceeded, and respond by locking out the key.

Doug Ewell | | Thornton, CO ����

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