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Sweep 22 Oct 2026 · 04:32Z Build v2.1.308 527 read Stable v2.1.308 Latest v2.1.308 Next v2.1.308 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.248 ·

The claude logs escape-sequence filter is an allow-list

Log replay keeps only escape sequences it recognises and drops everything else.

You'll notice Improvements
JSON All of v2.1.248
You'll noticeTier: how much it should matter to you
2Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
ElsewhereArea: what it touches
ImprovementsKind: in v2.1.248,
ImprovementsSection of the release
What

Rather than stripping known-bad sequences, log replay keeps only sequences it recognises and drops everything else, including private-mode and parameter-prefixed ones.

Details
  • Screen-erase is allowed only with parameters 0, 1 or 2; scroll-down only with a single numeric parameter; plus a small set of two-character escapes.
  • The parser also reports whether the stream ever moved the cursor to an absolute position, which is what triggers the trailing reposition.
  • Unconditional; the reposition only applies when output is a terminal.
Evidence

cursorAddressed

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

Read from
Names in the bundleclaude logs
Since it was published

The entry above is what we published on the day. These lines were added later, as Anthropic's own pages caught up, and they sit beside the original rather than replacing it.

Confirmed since Anthropic's documentation has since written up claude logs, on Manage multiple agents with agent view. | `claude logs <id>` | Print the session's recent output | agent-view see the edit
How sure we are
Two sources agreeTwo things we can check say the same as this entry.
Anthropic's documentation agreesAnthropic's documentation has since written up claude logs, on Manage multiple agents with agent view.
Anthropic's release notes agreeFixed claude logs leaving mouse tracking, bracketed paste and the alternate screen switched on in the terminal it was run from

See this entry in the whole of v2.1.248 →

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