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This will allow easier subclassing of SpiceChardev, in upcoming "display: add -display spice-app launching external application" patch. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Tested-by: Victor Toso <victortoso@redhat.com> Message-id: 20190221110703.5775-7-marcandre.lureau@redhat.com Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>