YAML 2: Multiline Strings, Anchors/Aliases, Merge Keys, Multiple Documents and KYAML
Write scripts with |, long prose with >, and use |- for single-line values such as secrets, otherwise a \n is appended. The merge key (<<) is not in YAML 1.2: Compose, kubectl and kubeconform support it, GitHub Actions does not, and js-yaml 5 needs an option. We show multiple documents, the document boundary of anchors, unsafe tags, KYAML and a yamllint rule set for Bookstore with real output.
15 Nov 2026
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14 min
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9
