Hutterer: Why it's not a good idea to handle evdev directly

Peter Hutterer writesabout why libinput exists. It turns out that, like most otherhardware, input devices have no end of obnoxious quirks to deal with."All this is just handling features that users have come toexpect. Examples for non-features that you'll have to implement: on someLenovo series (*50 and newer) you will get a pointer jump after a series ofof events that only have pressure information. You'll have to detect anddiscard that jump. The HP Pavilion DM4 touchpad has random jumps in theslot data. Synaptics PS/2 touchpads may 'randomly' end touches and restartthem on the next event frame 10ms later. If you don't handle that you'llget ghost taps. And so on and so forth."