Happy 2025!

New year new yamlfmt release! This one once again only features things contributed by the community. I am working on a major feature that I was hoping to finish before pushing this release out, but I ran into a snag and I didn't want to delay these things getting released.

Breaking Changes

New Minimum Go Version is 1.21

Originally I was keeping this library compatible with Go 1.18, which was the latest at the time. There was a time when I tried to update the minimum version to Go 1.20 when it was released, and I ended up getting complaints so I kept it where it was. Go 1.18 is long EOL, and it makes more sense as an application to stay up to date to in-support releases. So the new rule of thumb will be to maintain compatibility with the oldest non-EOL version of Go going forward.

Features

gitlab output format

Generate yamlfmt results in GitLab Code Quality report format. See more info here.

gitignore match type

We had support already for gitignore_excludes, i.e. using a gitignore file to match which files to exclude, similar to how it works with Git. However, it can be useful for positive matches, i.e. what files to actually include, since the gitignore patterns can also be negated meaning that all includes and excludes can be managed by a single gitignore-style file. See more info here.

yamlfmt Docker image

yamlfmt is now available as a Docker image! This was originally done for the purpose of using yamlfmt in CI, but could be useful in other scenarios too. See download and usage instructions in the README.

Contributors

• Thanks @octo for contributing the gitlab output format and gitignore match type, as well as improvements to the integration test workflow
• Thanks @mrueg for updating the build and test flows from Go 1.18 to Go 1.21 and removing EOL versions
• Thanks @fsrv-xyz for the Docker image work
• Thanks @alexandear for doc fixes and test name typo fixes
• Thanks @wusatosi for the pre-commit doc update

I'm hoping my big new feature will be ready for the next update. Thanks for using yamlfmt, and thanks to all the contributors!