To generate this issue simply run
examples/c/x01c -save test_xcairo.psc -dev xcairo
The on-screen results from xcairo are fine, but the generated PostScript file has bad superscripts. If instead, you run
examples/c/x01c -save test_qtwidget.psc -dev qtwidget
the superscripts (and everything else) are fine with the generated PostScript file. Both xcairo and qtwidget deal with unicode fonts in similar ways so I believe the xcairo bug must be due to incorrect information being stored in the xcairo buffer that is subsequently replayed with -dev psc to generate the -saveD PostScript output
I presume that is because the xcairo buffer
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