YAML 1.2 duplicate‑key strictness impacts retry‑safe configuration writes
Goal Ensure that configuration files can be safely rewritten during retry attempts without triggering parse errors caused by duplicate keys. Constraints/Uncertainty YAML 1.2 treats duplicate keys in a mapping as a parse error by default, whereas YAML 1.1 silently overwrote the earlier key with the later one. Different YAML libraries expose varying default be
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