TestModeMadeQuestionAbcdsSaysSo failed once on the macOS leg of PR #858 with 'stdout is not one hook output object: EOF' after 0.11s, in a change that never touched the guard; a re-run passed. The test arrived with #849. An empty stdout from the question hook reads as a race between the hook's output and the test's read.

TestModeMadeQuestionAbcdsSaysSo failed once on the macOS leg of PR #858 with 'stdout is not one hook output object: EOF' after 0.11s, in a change that never touched the guard; a re-run passed. The test arrived with #849. An empty stdout from the question hook reads as a race between the hook's output and the test's read.

Grounds

• pursued: TestModeMadeQuestionAbcdsSaysSo stays green under -race -count=200 (200/200 at base), and TestModeMadeQuestionSurvivesAGitHoldingItsPipe fails with CI's exact EOF message if the unconditional WaitDelay returns; a future EOF from that test with the WaitDelay fix in place would show a second cause