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Fix four vendored/hosted correctness bugs found while profiling #89

Job	Run time
matrix (ubuntu-latest, 2018.11.26 2020.11.15 2021.11.23 2022.12.19 2023.12.1 2024.4.1 2025.1.3 20...	5m 47s
matrix (ubuntu-latest, 2022.12.19 2026.8.0, crlf marker-excluded extras category)	4m 33s
matrix (macos-latest, 2018.11.26 2022.12.19 2023.12.1 2026.8.0, direct)	5m 15s
	15m 35s