Inconsistency in left/right keydowns

[ffxsam]

Just wondering, why is it that ctrl/shift/alt don't distinguish between left/right, but the Mac command key does?

[heymath]

I guess because keycode uses event.keyCode to determine key names, and it seems that cmd left and cmd right have different keyCode, but ctrl left and ctrl right share the same keyCode with an event.location set to 1 or 2 to make the difference :/

[ctf0]

also keydown could give different keycode from keypress