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That time YAML silently broke your config because of Norway

A colleague pinged me last week with a config issue that had him chasing his tail for an afternoon. Turns out he was setting country: NO in a YAML file, expecting it to mean Norway.

  • YAML misinterprets unquoted "NO" as boolean false
  • Application runs without error, uses "false" instead of "NO"
  • Quote strings to prevent silent boolean coercion

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