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A comment on A Mystery of Unix History. Parent comment

Re:A Mystery of Unix History by zozbot234 on Wednesday November 20, 2019 @03:25PM (#21588102)
You would need an N-key-rollover keyboard to be able to do this, at least in the general case. Baseline keyboards do not register overlapping keypresses correctly, unless you are using the ordinary modifier keys.
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Re:A Mystery of Unix History by SolarNet on Monday November 25, 2019 @08:15AM (#21627808)
Sure, but a lot of gaming hardware supports this, and it's a hardware issue. If one is customizing their editor to the point of using arbitrary modifier keys, they will probably be willing to buy a custom keyboard.

Also while on the subject 8 key rollover, which is pretty common, is probably more than enough.

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Re:A Mystery of Unix History by Reelin on Wednesday November 20, 2019 @10:56PM (#21591312)
I never knew about this. My laptop seems to have 8-key rollover for most (?) sequences that would be natural for your hands, but drops as low as 2-key for unlikely combinations. Any idea what's going on?

http://gadzikowski.com/nkeyrollover.html

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