markdownlint vs SwiftLint

markdownlint has no write-up on Specifiction yet; its figures are above.

SwiftLint is a free, MIT-licensed tool that checks Swift source against style rules and conventions accepted by the Swift community. It includes more than 200 built-in rules, with opt-in rules disabled by default. A project can set active rules, included and excluded paths, and rule settings in a `.swiftlint.yml` file. SwiftLint can automatically correct some violations, overwriting affected files, and its command line supports linting, analysis, baselines, rule listings, and multiple reporters. Documented integrations include Xcode and Swift Package Manager plugins, pre-commit, Fastlane, Docker, Visual Studio Code, and MegaLinter. Installation choices include package managers, prebuilt packages, and source builds. Releases include macOS, Windows, and Linux binaries. SwiftLint is intended for valid, compilable source, and non-compiling code may produce unexpected results, especially when autocorrecting. Analyzer rules are considerably slower than lint rules. The project is maintained by volunteers, and the maintainers describe it as non-commercial.