Sourced from json's releases.

v2.13.2

What's Changed

• Improve duplicate key warning and errors to include the key name and point to the right caller.

Full Changelog: https://github.com/ruby/json/compare/v2.13.1...v2.13.2

v2.13.1

What's Changed

• Fix support for older compilers without __builtin_cpu_supports.

Full Changelog: https://github.com/ruby/json/compare/v2.13.0...v2.13.1

v2.13.0

What's Changed

• Add new allow_duplicate_key parsing options. By default a warning is now emitted when a duplicated key is encountered. In json 3.0 an error will be raised.
• Optimize parsing further using SIMD to scan strings.

Full Changelog: https://github.com/ruby/json/compare/v2.12.2...v2.13.0

Sourced from json's changelog.

2025-07-28 (2.13.2)

• Improve duplicate key warning and errors to include the key name and point to the right caller.

2025-07-24 (2.13.1)

• Fix support for older compilers without __builtin_cpu_supports.

2025-07-17 (2.13.0)

• Add new allow_duplicate_key parsing options. By default a warning is now emitted when a duplicated key is encountered. In json 3.0 an error will be raised.
• Optimize parsing further using SIMD to scan strings.

• 9e3efbf Release 2.13.2
• 132049b Improve deprecation warning location detection
• db4c428 Merge pull request #832 from byroot/duplicated-key-error-message-2
• cd51557 Fix duplicated key warning location
• bea97e0 Merge pull request #831 from byroot/duplicated-key-error-message
• e3de4cc Improve duplicate key warning and errors to include the key name
• 6d29d75 Merge pull request #830 from nobu/indent
• 1988a3a Keep indentation consistent across functions
• 17dd7b6 Merge pull request #829 from nobu/static-linked-ext
• 020693b Functions defined in headers should be static inline
• Additional commits viewable in compare view

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