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Sweep 22 Oct 2026 · 21:04Z Build v2.1.309 528 read Stable v2.1.308 Latest v2.1.309 Next v2.1.309 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.239 ·

Markdown files saved with a byte-order mark now have their frontmatter read

Agents, commands, skills and CLAUDE.md files saved with a byte-order mark now have their frontmatter read.

You'll notice Bug Fixes
JSON All of v2.1.239
You'll noticeTier: how much it should matter to you
4Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
FrontmatterArea: what it touches
Bug FixesKind: in v2.1.239,
What probably matters to youSection of the release
What

Agent, command, skill and CLAUDE.md-style files saved with a UTF-8 byte-order mark had their YAML frontmatter treated as ordinary body text. All three frontmatter parsers now strip the mark first.

Details
  • Covers the generic parser, the multi-file loader that reports "Could not read", and the agent/skill parser that special-cases a leading ---.
Evidence

e.charCodeAt(0) === 65279 ? e.slice(1) : e

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

See this entry in the whole of v2.1.239 →

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