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Reading a new release v2.1.251 Analysing changes · 2/5 Sorting the findings · 1/4 steps 470 findings $18.91 so far

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 v2.0.36 7 Nov 2025

Enhanced Session End Handling

What: Session end processing now includes session hook cleanup and accepts additional configuration Details:

Function renamed from Hf1() to Tf1() with enhanced parameters (signature at line 483476)
Now accepts options object with getAppState, setAppState, signal, timeoutMs
Automatically clears session hooks after executing SessionEnd hooks (cleanup call il2(I, J) at line 483506)
Prevents session hook accumulation across multiple sessions
Evidence: Old function Hf1 at line 482867 (removed), new function Tf1 at line 483476 (added), session hook clearing at line 483506

See this entry in the whole of v2.0.36 →