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#endif /* PANGO_ENABLE_BACKEND */
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#define PANGO_GLYPH_EMPTY ((PangoGlyph)0x0FFFFFFF)
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#define PANGO_GLYPH_UNKNOWN_FLAG ((PangoGlyph)0x10000000)
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#define PANGO_GET_UNKNOWN_GLYPH(wc) ((PangoGlyph)(wc)|PANGO_GLYPH_UNKNOWN_FLAG)