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+---
+title: "Lively code"
+layout: post
+---
+
+TODO(on: date(...), to: '#slack-channel')
+https://github.com/sindresorhus/eslint-plugin-unicorn/blob/main/docs/rules/expiring-todo-comments.md
+https://github.com/jbreckmckye/todo-or-else
+todocheck (preslavmihaylov) and tickgit, leasot, imdone — parse TODOs referencing issues and fail CI when the referenced issue is closed. the TODO dies when its issue resolves.
+
+TODO(username)
+
+TODO(issue number)
+
+* even with non-github, github can auto-link certain text patterns like D12345
+* github issue auto-closing with "Fixes #123"
+
+LINT.IfChange https://github.com/simonepri/ifttt-lint
+https://filiph.net/text/ifchange-thenchange.html
+https://www.chromium.org/chromium-os/developer-library/guides/development/keep-files-in-sync/
+
+doctests
+
+Danger / DangerJS -- PR-level rules ("you touched schema.rb but not a migration", "changed API but not CHANGELOG") encoded in JS. IfChange at review granularity.
+
+Cog (Ned Batchelder), embedme, markdown-code-runner, mdformat -- embed/generate content in-place and re-check it's current in CI. bindgen (which you use) is the same pattern across the C<->Rust boundary.
+
+Codegen markers: Go's // Code generated ... DO NOT EDIT + go generate, protobuf/IDL regeneration, gazelle for BUILD files.
+
+
+- Piranha (Uber) — once a feature flag is permanently enabled, it deletes the now-dead branches automatically. The end state of an expiring annotation: the code removes itself.
+
+<!---
+  Linking that breaks the build when the target moves:
+  - Rustdoc intra-doc links [`Foo`] with #![deny(rustdoc::broken_intra_doc_links)].
+  - Javadoc {@link} under doclint; Sphinx :ref: / intersphinx with nitpicky mode erroring on dangling refs; Doxygen \ref.
+-->
+
+  Liveness/quality scanners
+
+  - Link liveness: lychee, markdown-link-check, linkinator, remark-validate-links.
+  - Spelling with inline allow-lists: typos (Rust), codespell, cspell.