[shaping] Make explicit non-mark category take precedence over ad-hoc mark detection#2508
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justvanrossum merged 1 commit intomainfrom Mar 23, 2026
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If a glyph has an explicit category, either custom (via glyph infos) or via the Glyph Data list, and that category/subcategory is not Mark/Nonspacing, then the glyph is definitely not a mark, regardless of what the ad-hoc mark detection heuristic may think.
This fixes #2507.