[Bugs] #4132 Write UNSP: Xorg pointer emulation issues

[Sugar Labs Bugs]

#4132: Xorg pointer emulation issues
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    Reporter:  garnacho                   |          Owner:  godiard                    
        Type:  defect                     |         Status:  new                        
    Priority:  Unspecified by Maintainer  |      Milestone:  Unspecified by Release Team
   Component:  Write                      |        Version:  Unspecified                
    Severity:  Unspecified                |       Keywords:                             
Distribution:  Unspecified                |   Status_field:  Unconfirmed                
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 Certain emulated pointer events resulting from touch events may contain a
 bogus button mask, concretely the first virtual motion event, and the
 ButtonPress/Release emulated events. this breaks invariants in clients
 (gtk+ and abiword known to be affected) that button 1 mask will be only
 set while between the corresponding ButtonPress/Release events.

 An initial patch was submitted to xorg-devel:
 http://lists.x.org/archives/xorg-devel/2012-October/034229.html

 But other miscellaneous problems arose, that also need fixing:
 http://lists.x.org/archives/xorg-devel/2012-October/034238.html

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Ticket URL: <http://bugs.sugarlabs.org/ticket/4132>
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