KPathSea fails to locate file UnicodeData.txt

[Witiko]

Following a bug report Witiko/markdown#458 for the markdown package, I discovered that the KPathSea library fails to locate the file UnicodeData.txt on current MikTeX even though the package unicode-data is installed, see also my installation report.

The bug can be easily reproduced by simply running the command kpsewhich UnicodeData.txt from the command line, which produces a full path of the file UnicodeData.txt with TeX Live but which produces no output with current MikTeX.

Similarly, calling the command kpse.lookup("UnicodeData.txt") in LuaTeX produces a full path of the file UnicodeData.txt with TeX Live but produces no value (nil) with current MikTeX. See also Witiko/markdown#458 (comment) for screenshots and a reproducing .tex file.

[github-actions]

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[github-actions]

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