YAML's biggest flaw is that it simply isn't a safe file format. A YAML file can be truncated virtually arbitrarily ... and remain a valid YAML file. This causes semantic corruption and missing elements in scenarios as routine as a partial file transfer, a nearly full filesystem, or an editor crash. JSON, XML, everything short of dumb .ini files, has terminators and so avoids this problem.
ghuntley
commented
5 years ago
YAML's biggest flaw is that it simply isn't a safe file format. A YAML file can be truncated virtually arbitrarily ... and remain a valid YAML file. This causes semantic corruption and missing elements in scenarios as routine as a partial file transfer, a nearly full filesystem, or an editor crash. JSON, XML, everything short of dumb .ini files, has terminators and so avoids this problem.