Fix life.occ display buffering and ALT busy-wait#92
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associate-1 merged 1 commit intomainfrom Feb 24, 2026
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Two bugs prevented the Game of Life editor mode from working: 1. Screen output goroutine never flushed for small writes. Add auto-flush when the channel drains (len(ch) == 0), so bursts of output flush immediately while still batching rapid writes. 2. Guarded SKIP in ALT generated unconditional `default:` in select, causing 100% CPU spin when the guard was false. Use a dual-select pattern: when guard is true, include default (non-blocking); when false, omit default (blocks on channels). Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
dboreham
approved these changes
Feb 24, 2026
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Summary
Fixes the two bugs preventing the Game of Life editor mode from working (#72):
len(ch) == 0, so small writes (cursor movements, single characters) appear immediately instead of waiting for the 4096-byte buffer to fillselectomitsdefault:so it blocks on channel cases instead of busy-waiting at 100% CPUTest plan
go test ./...)TestE2E_AltGuardedSkipFalseBlockingverifies ALT blocks when SKIP guard is false (uses relay channel to force sender delay)life.occtranspiles and passesgo vetgo run /tmp/life.go— e→arrows→*→q→r works🤖 Generated with Claude Code