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;;; actionlint.el --- Flycheck checker for GitHub Actions.
;;; Commentary:
;; GitHub Actions are defined using mostly plain YAML files.
;; Actionlint is a linter catching GitHub Action-specific mistakes, and also
;; checks Shell and Python code embedded in Actions (using shellcheck and
;; pyflakes, respectively).
;;; Code:
(require 'flycheck)
(defun actionlint-github-workflow-p ()
"Does the current buffer contain a GitHub Action?"
(string-match-p "\\.github/workflows/[^/]+\\.yml\\'" (buffer-file-name)))
(flycheck-def-executable-var actionlint "actionlint")
(flycheck-define-checker actionlint
"A syntax checker and linter for alidist recipes."
;; `flycheck-alidist-executable' automatically overrides the car of the
;; :command list if set and non-nil.
:command ("actionlint" "-no-color" "-oneline" source)
:error-patterns
((error line-start (file-name) ":" line ":" column ": " (message)
" [" (id (minimal-match (one-or-more not-newline))) "]" line-end))
;; Only enable this in actual GitHub Actions, not just any YAML document.
:modes (yaml-mode)
:predicate actionlint-github-workflow-p
;; Also check the document with YAML checkers, whether or not we have errors.
:next-checkers (yaml-ruby yaml-yamllint))
(add-to-list 'flycheck-checkers 'actionlint)
(provide 'actionlint)
;;; actionlint.el ends here
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