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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 v2.1.246 ·

Pathological markdown no longer crashes rendering

Wildly malformed markdown now falls back to plain text instead of crashing your display.

You'll notice Bug Fixes
JSON All of v2.1.246
You'll noticeTier: how much it should matter to you
3Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
RenderingArea: what it touches
Bug FixesKind: in v2.1.246,
Bug FixesSection of the release
What

Text that overflows the markdown parser now degrades to a single plain paragraph and logs the overflow instead of throwing.

Details
  • The quick "does this look like markdown at all" check now examines the whole string rather than the first 500 characters, and runs after the cache lookup.
Evidence

marked.lexer overflow on

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

See this entry in the whole of v2.1.246 →

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