On Wed, Sep 10, 2008 at 04:51:52PM +0200, Henrik Rydberg wrote:

Greetings Dmitry,

quoted

On Fri, Sep 05, 2008 at 03:19:56AM +0200, Henrik Rydberg wrote:

quoted

On most linux-based systems, the right and middle buttons are used
extensively. On computers lacking either of those buttons, such as
the Apple Macbooks, emulation is needed. This patch adds emulation
of the missing buttons via two-fingers-and-click and three-fingers-
and-click operations, which has recently become standard, both in
MacOS and in the Xorg synaptics driver.

The standard way of emulating right and middle button presses for
"button-deficient" devices is to use Macintosh emulation
(MAC_EMUMOUSEBTN) that works not only for touchpads but for regular mice
as well.

I have a hard time believing that in five years from now, people will
still consider pressing a key on the keyboard the standard way to
emulate a right click.

Well, what other options do you have if your device has only one
button and nothing else (i.e. it's a mouse, not a touchpad)? Anyway, I
hope in 5 years distros will switch to pure evdev-based interfaces and
won't use mousedev at all.

Nevertheless, I can see the point in moving
away from user-land decisions in the kernel. I will not pursue this one
further, although it is a rather neat piece of functionality.

quoted

Overall I don't think we should enhance mousedev for scenarios where
proper solution is to install Synaptics X driver. This also goes for
your other patch improving tapping in mousedev.

Regarding the tapping patch; it is addressing the correctness of
already implemented functionality. I can see nothing wrong with that.

My position that since the isssue can be "fixed" by simply installing
the proper X driver I'd rather not include it. Mousedev purpose is to
provide good enough emulation in absence of a native driver and that's
it. Also, the default value would not work well on high-resiolution
devices (like Synaptics) and would require user fiddling with kernel
parameters - not worth it in my opinion.

-- 
Dmitry