Filtering system-level gestures

[Daniel d'Andrada]

Hi,

Talking to some people I noticed that there are different views on how
the filtering of system-level gestures (the ones used by the shell)
should be done.

I've summarised in a document the two existing approaches along with my
thoughts on them:
https://docs.google.com/document/d/1tBEyIdGXRTN0oOtY33f8d_giFZv5x7dcd_NRGiCHx7A/edit?usp=sharing

So the idea here is to come to an agreement and to have everybody
involved on the same page.

Regards,
Daniel

PS: It might be better to add comments directly to this document than
replying to this e-mail.