The heading must be followed by (and only by) an unnumbered Markdown list. Changes that are listed under Removed will typically be breaking, while anything under Added is potentially interesting to the reader but carries no risk when upgrading. The categories exist to easily recognize the impact of changes and to allow skimming a changelog. The word functionality here can also mean documentation, supported runtime environments and so forth. Changed for changes in existing functionality.Change groupĪ change group must start with a third-level, text-only Markdown heading containing a category: # If a notice pertains to code (rather than a release or associated artifacts) and has a suitable place outside of the changelog, write it there instead. There can only be one notice per release. Use notices wisely, as they will be the first thing a reader sees at the expense of regularly structured content. Notices are also useful to describe first releases (that have no changes). For example (links omitted): # - _If you are upgrading: please see ( UPGRADING.md )._ # Removed - **Breaking:** remove `write()` method from public API ( `01e3a64` ) Adding Markdown emphasis markers is recommended. This is a single-sentence paragraph with otherwise arbitrary Markdown content. Other times a release may need to clarify its status, when it was yanked or contains zero changes.įor these purposes a notice must be used. NoticeĪ release might have a separate upgrade guide or blog post that is considered essential reading. Those have other goals and concerns and must be kept separate from the changelog. No other content is permitted, because a changelog is not a blog or detailed upgrade guide. A notice followed by zero or more change groups.Ĭhange groups are only optional if a notice explains why there aren't any.Invalid: # ( ) # ( ) _Initial release._Īfter the heading, a release must have Markdown content that is either: Valid: # - # Fixed - Prevent segmentation fault upon `close()` # - _Initial release._ : : If the project is hosted on GitHub, link the version to a GitHub release that should contain the same content as the changelog entry, alongside useful GitHub features like assets and the compare view. Use Markdown link references to keep the unrendered Markdown form of the changelog readable. The version should link to further information. The version should match a git tag (with optional "v" prefix) unless it's a new version, of which the changelog entry should be committed before creating a git tag. ReleaseĪ release must start with second-level Markdown heading, containing a semver-valid version (without "v" prefix) and a date in the form of YYYY-MM-DD ( ISO 8601). There must be an entry for every new stable release. This means that the semantically latest (and hence most important and frequently sought) release is at the top of the changelog. Releases must be sorted latest-first according to Semantic Versioning rules, even if a release with a smaller version was published at a later time. Subsequent Markdown content must be zero or more releases, also referred to as changelog entries. File content must be Markdown and start with a first-level heading: # Changelog Project adheres to Semantic Versioning.įilename must be CHANGELOG.md.Each released version has a corresponding git tag.Project is under version control (this document assumes git).Link each change to further information.When software changes, people want to know why and how. Semantic Versioning helps as a signaling mechanism but is not enough by itself. They must be able to quickly understand the impact of a release. The consumers of software are human beings who care about what's in the software. Its purpose is to make it easier for consumers (and to a lesser extent contributors) to see precisely what changes have been made between two releases. What is a changelog?Ī changelog is a file that contains a curated, ordered list of notable changes for each versioned release of a project. Is Common Changelog a commit convention?ġ. How is this different from Keep a Changelog? □ Too long didn't read? Here's an example. It embraces the guiding principle of Keep a Changelog that changelogs must be written by humans and for humans, while recognizing that a clean changelog starts with a clean git history. Common Changelog is a style guide for changelogs, adapted from and a stricter subset of Keep a Changelog.
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