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Sweep 28 Sep 2026 · 18:16Z Build v2.1.284 505 read Stable v2.1.277 Latest v2.1.284 Next v2.1.284 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.284 ·

Exit codes that are not whole numbers in range are rejected

An exit code that is not a whole number from 0 up to a maximum is now refused with an error saying so

Under the hood Internal Changes
JSON All of v2.1.284
Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
ToolsArea: what it touches
Internal ChangesKind: in v2.1.284,
Internal ChangesSection of the release
What

Claude Code now checks exit codes, the number a program reports when it finishes. A value that is not a whole number from 0 up to a set maximum is refused with a message saying so.

Why

An invalid exit code is caught with a clear message instead of being used as it is.

How sure we are
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubtWhere this check is applied, and which exit codes it covers, is not known.

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