if ci_badges.map(&:color).detect { it != "green"} ☝️ let me know, as I may have missed the discord notification.

if ci_badges.map(&:color).all? { it == "green"} 👇️ send money so I can do more of this. FLOSS maintenance is now my full-time job.

ast-merge-git adapts StructuredMerge contracts to Git merge-driver workflows. It translates Git driver inputs into family-aware merge requests and reports structured diagnostics that can be surfaced by repository tooling.

• Git-oriented request and response shaping for three-way merge driver integrations.
• Family detection from path, extension, and configured merge behavior.
• JSON-compatible reports that can be logged, inspected, or replayed by higher-level tooling.
• Fallback-friendly behavior for unsupported families or unsafe parser results.

Tokens to Remember
Works with MRI Ruby 4
Support & Community
Source
Documentation
Compliance
Style
Maintainer 🎖️
... 💖	🧊 🐙 🛖 🧪

Compatible with MRI Ruby 4.0.0+, and concordant releases of JRuby, and TruffleRuby. CI workflows and Appraisals are generated for MRI Ruby 4.0.0+. This test floor is configured by ruby.test_minimum in .kettle-jem.yml and may be higher than the gem's runtime compatibility floor when legacy Rubies are not practical for the current toolchain.

The amazing test matrix is powered by the kettle-dev stack.

How kettle-dev manages complexity in tests

Gem	Source	Role	Daily download rank
appraisal2	GitHub	multi-dependency Appraisal matrix generation
appraisal2-rubocop	GitHub	RuboCop Appraisal generator integration
kettle-dev	GitHub	development, release, and CI workflow tooling
kettle-jem	GitHub	Appraisals & CI workflow templates
kettle-soup-cover	GitHub	SimpleCov coverage policy and reporting
kettle-test	GitHub	standard test runner and coverage harness
rubocop-lts	GitHub	Ruby-version-aware linting
turbo_tests2	GitHub	parallel test execution

Install the gem and add to the application's Gemfile by executing:

bundle add ast-merge-git

If bundler is not being used to manage dependencies, install the gem by executing:

gem install ast-merge-git

Configure ast-merge-git through the repository's Git attributes and StructuredMerge family settings. The gem expects callers to provide the ancestor, current, and incoming file contents that Git passes to a custom merge driver.

Keep family-specific parser configuration in the corresponding merge gem. For example, Markdown backend choices belong to markdown-merge or its provider gems, while Ruby source backend choices belong to ruby-merge or prism-merge.

require "ast/merge/git"

result = Ast::Merge::Git.merge3(
  language: "json",
  dialect: "json",
  base_source: File.binread("%O"),
  ours_source: File.binread("%A"),
  theirs_source: File.binread("%B"),
)

if result.fetch(:ok)
  File.binwrite("%A", result.fetch(:merged_source))
else
  File.binwrite("%A", result.fetch(:conflicted_source)) if result[:conflicted_source]
  abort result.fetch(:diagnostics).inspect
end

See SECURITY.md.

If you need some ideas of where to help, you could work on adding more code coverage, or if it is already 💯 (see below) check issues or PRs, or use the gem and think about how it could be better.

We so if you make changes, remember to update it.

See CONTRIBUTING.md for more detailed instructions.

This library follows for its public API where practical. For most applications, prefer the Pessimistic Version Constraint with two digits of precision.

For example:

spec.add_dependency("ast-merge-git", "~> 7.0")

See CHANGELOG.md for a list of releases.

The gem is available under the following licenses: AGPL-3.0-only, PolyForm-Small-Business-1.0.0. See LICENSE.md for details.

If none of the available licenses suit your use case, please contact us to discuss a custom commercial license.