Nicolas Seriot

I'm a software security engineer, and this is my personal website. I love hunting for beauty and accidental logic where neither belongs. I turn printers into game consoles , specs into bugs , and Swiss mountains into GPX routes . Selected pieces:

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Visit seriot.ch → On Hacker News Oct 2016 – Jul 2026

Software Engineering 5 Web & Frontend 2 Tools & Productivity 1 Math & Algorithms 1 Games & Graphics 1

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Unicode's transliteration rules are Turing-complete

2026131 points31 comments Software Engineering details

Claim: as specified, the UTS #35 transliteration-rule language is Turing-complete. This is an exception in Unicode, where algorithms are deliberately bounded and always terminate. The specification defines a revisiting cursor with no rewrite limit. ICU's implementation implements a per-call cap, but the spec itself…