Keyboard mapping characters with both shift keys

Robert Nichols rnicholsNOSPAM at comcast.net
Mon May 18 15:41:02 UTC 2009


Mat Booth wrote:
> On Mon, May 18, 2009 at 11:04 AM, Ankitkumar Rameshchandra Patel
> <ankit at redhat.com> wrote:
>> What's the expected results of Left_Shift + Right_Shift + Any Key?
>>
>> I have tried Left_Shift + Right_Shift + each individual key combination of
>> QWERTY keyboard in text editor (e.g. gedit) and got the following results:
>>
>> ~!@#$%^&*()_+
>> QWERUIOP|
>> ASDFGHJKL:"
>> BN?
>>
>> If you notice, there are many English alphabets not being displayed. e.g.
>> Left_Shift + Right_Shift + t = <nothing> , same for y, z, x, c, v and m
>> keys.
>>
>> Is this a correct behavior?
>>
> 
> Curiously, you can observe the same behaviour in Windows. Is this a
> limitation of the keyboards themselves, perhaps?

Indeed, "showkey -s" does not show any scan codes being emitted for some
keys while both the left and right shift keys are held down.  I see this
behavior for qwerty7890-= keys with my keyboard.

-- 
Bob Nichols     "NOSPAM" is really part of my email address.
                 Do NOT delete it.




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