lintr

Guidelines and best practices for creating, extending, and refactoring linters in the r-lib/lintr package. Use this skill whenever implementing or modifying linter functions, XPath queries, and linter helpers.

Guidelines and conventions for writing unit tests for linters in the r-lib/lintr package using testthat. Use this skill whenever creating or modifying linter test files under tests/testthat/.

Guidelines and conventions for writing, composing, and formatting XPath expressions when building or refactoring linters. Use this skill whenever writing or analyzing XPath queries in linter definitions.

Guidelines and architecture for handling literate R documents (.Rmd, .qmd, .Rnw, .Rhtml) and source extraction in the r-lib/lintr package. Use this skill when modifying R/extract.R or working with non-R source files.