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DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

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Claude Code v2.0.21

Improved Signal Handling

What: Enhanced initialization sequence to include proper SIGINT/SIGTERM signal handlers for graceful shutdown.

Details:

  • Added signal handler initialization (N7()) to the uz1 startup function at line 455136
  • Ensures proper cleanup when Claude Code is interrupted or terminated
  • No user-visible behavior change, but improves reliability

Evidence:

  • v2.0.20: uz1 initialization at line 455101 without signal handlers
  • v2.0.21: uz1 initialization at line 455136 now includes N7() signal handler

Related

Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.

See this entry in the whole of v2.0.21 →