Hi, "vertical" option of XeTeX 0.9999 is currently broken. Applying attached patch seems to make it work better, though I know almost nothing about C language.
Still, some issue remains. Especially vertical gpos feature, for instance +vhal option, does not work correctly. Though vhal feature should decrease the glyph advance, current XeTeX increases it instead. Harfbuzz, on the other hand, works correctly. I could not figure out where this problem comes from. Regards, -- Dohyun Kim
vertical_layout.patch
Description: Binary data
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