[xorg-bugzilla-noise] [Bug 926] New: Alt_R not added to Mod1 group

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https://freedesktop.org/bugzilla/show_bug.cgi?id=926       
  
           Summary: Alt_R not added to Mod1 group
           Product: xorg
           Version: CVS_head
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: App/xkbcomp
        AssignedTo: xorg-bugzilla-noise at freedesktop.org
        ReportedBy: krh at bitplanet.net


Recent changes to symbols/pc/pc removed Alt_R from the Mod1 group:

http://freedesktop.org/cgi-bin/viewcvs.cgi/xorg/xc/programs/xkbcomp/symbols/pc/pc?r1=1.1&r2=1.2

which merge this change from XFree86 CVS:

http://cvsweb.xfree86.org/cvsweb/xc/programs/xkbcomp/symbols/pc/pc.diff?r1=1.7&r2=1.8

According to the XFree86 commit comment this was to:

 172. Add workaround for problems that arise when in multi-layout map
      different modifier keysyms share the same key (Ivan Pascal). 

This change breaks metacity: when using Alt+TAB to cycle windows, metacity
relies on a KeyRelease of a Mod1 keysym to remove the window icon list window. 
When Alt_R is used, metacity doesn't receive that event, and the window icon
list window is stuck on the desktop.

See https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=122752 and
http://bugzilla.gnome.org/show_bug.cgi?id=142947.

Not sure what the fix is.       
  
  
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