Sweep 19 Sep 2026 · 02:36Z Build v2.1.278 500 read Stable v2.1.267 Latest v2.1.278 Next v2.1.278 Feeds RSS JSON llms.txt Unofficial
Claude Code v2.1.275 ·

New REPL poll-event idle delivery guard class

Claude Code now detects and recovers queued REPL events that a turn failed to deliver

TierUnder the hoodhow much it should matter to you
Useful2my rating, 1 to 5
Signal1worth watching, 1 to 5
AreaREPLwhat it touches
KindInternal Changesin v2.1.275,
Under the hood

Claude Code now detects and recovers queued REPL events that a turn failed to deliver

What

Claude Code now tracks whether queued interactive-session (REPL) events were actually delivered during the turn that was supposed to handle them. If a turn finishes without delivering those queued events, an error is logged internally and an empty placeholder prompt command is re-queued so the events get flushed on the next turn instead of being silently dropped.

Why

This prevents queued input from getting stuck and never reaching a turn, ensuring it's eventually processed on a following prompt.

See this entry in the whole of v2.1.275 →