A home for personal thoughts, notes on software engineering and programming languages.

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• PCRE in Go in 2026: wasm2go Is Ready, PCRE2 Isn't

  Updated:29 Oct, 2026

  wasm2go now carries go-sqlite3 and go-re2 without cgo, so why not PCRE2? Nobody maintains that build, the JIT can't come along, and backtracking on hostile input is a problem no runtime fixes. Until that changes I use regexp2 with limits.

• Mapping SQLite's WAL-Index into WebAssembly Memory

  28 Oct, 2026

  A Windows-only WAL corruption bug in the cgo-free go-sqlite3 driver, traced from my issue #404 and PR #405 to the maintainer's PR #413, and why mapping the wal-index directly into WebAssembly linear memory is the right fix.

• A Fortiori Is Just Monotonicity (Wearing a Latin Name)

  11 Jun, 2026

  An a-fortiori argument is exactly a claim that some predicate is monotone along an order — and 'my a-fortiori reasoning was wrong' means one of three precise assumptions failed.

• Building a Claude Code Skill Plugin from Scratch

  15 Apr, 2026

  A practical guide to building, structuring, versioning, and securing Claude Code skill plugins — lessons from creating fp-go-skill.