Not all those who wander are lost. – J.R.R. Tolkien Today I’m happy to announce Flycheck 38 - easily the biggest and most ambitious Flycheck release since I took over the stewardship of the project. I...

Flycheck has been one of my favorite Emacs packages ever since it was released almost 12 years ago. I love writing clean idiomatic code, I love the help that lint tools provide with this, and I wasn’t...

When rust-analyzer runs a flycheck on a binary package after a file write, it uses check -p regardless of rust-analyzer.check.workspace. This interacts poorly with package-specific features (in pa...

Unfortunately not working. Also `check.features` not working too. The exact error message is here: 2025-01-26T14:53:05.0707892+03:00 ERROR Flycheck failed to run the following command: CommandHandle { program: "C:\\Users\\emir\\.cargo\\bin\\cargo.exe", arguments: ["check", "--workspace", "--message-format=json-diagnostic-rendered-ansi", "--manifest-path", "C:\\project\\Cargo.toml", "--keep-going", "--all-targets", "--features", "foo bar"], current_dir: Some("C:\\project") }, error=Cargo watcher failed, the command produced no valid metadata (exit code: ExitStatus(ExitStatus(101))): I used these configs: "rust-analyzer.check.features": [ "foo,bar ], "rust-analyzer.cargo.features": [ "foo,bar" ], And this: "rust-analyzer.check.features": [ "foo", "bar" ], "rust-analyzer.cargo.features": [ "foo", "bar" ],

Note: As I was preparing tomorrow’s post, I noticed that I forgot to publish today’s. Sorry. Here it is, better late than never. Over at Meta Redux, Bozhidar Batsov has announced the release of Flycheck 36. It has, he says, … Continue reading →

After learning about French spellcheck and grammar checking from Emacs expliqué à mes enfants, I added flycheck-grammalecte to my config. Nudged by @lann@mastodon.zaclys.com, I finally got around to figuring out why my setup sometimes worked and sometimes didn't. When I checked flycheck-verify-setup, I noticed that grammalecte kept getting disabled. A little digging around showed me that it was getting disabled because of too many errors. That was because it was trying to work on my whole file instead of just the portion that I narrowed to with org-narrow-to-subtree (ooh, just noticed an org-toggle-narrow-to-subtree command). After some fiddling around, I figured out how to define a checker that runs only on the narrowed part of the buffer. (defun my-flycheck-grammalecte-buffer (checker callback) (let* ((temp-file-name (make-temp-file "grammalecte")) (output-buffer (get-buffer-create temp-file-name)) (buffer (current-buffer)) (cmdline (delq nil `("python3" ,(expand-file-name "flycheck_grammalecte.py" grammalecte--site-directory) ,(unless flycheck-grammalecte-report-spellcheck "-S") ,(unless flycheck-grammalecte-report-grammar "-G") ,(unless flycheck-grammalecte-report-apos "-A") ,(unless flycheck-grammalecte-report-nbsp "-N") ,(unless flycheck-grammalecte-report-esp "-W") ,(unless flycheck-grammalecte-report-typo "-T") (option-list "-f" flycheck-grammalecte-filters) (eval (flycheck-grammalecte--prepare-arg-list "-f" flycheck-grammalecte-filters-by-mode)) (eval (flycheck-grammalecte--prepare-arg-list "-b" flycheck-grammalecte-borders-by-mode)) ,temp-file-name))) (args (mapcan (lambda (arg) (flycheck-substitute-argument arg checker)) cmdline)) (command (flycheck--wrap-command (car args) (cdr args)))) (write-region (buffer-string) nil temp-file-name) (make-process :name "grammalecte" :buffer output-buffer :command command :sentinel (lambda (process status) (let ((errors (with-current-buffer (process-buffer process) (message "%s" (buffer-string)) (flycheck-parse-with-patterns (buffer-string) checker (current-buffer))))) (delete-file temp-file-name) (kill-buffer output-buffer) ;; offset (funcall callback 'finished (let ((offset (save-excursion (goto-char (point-min)) (line-number-at-pos nil t)))) (mapcar (lambda (err) (let ((new-err (copy-flycheck-error err))) (setf (cl-struct-slot-value 'flycheck-error 'buffer new-err) buffer) (setf (cl-struct-slot-value 'flycheck-error 'line new-err) (+ (flycheck-error-line new-err) offset -1)) (setf (cl-struct-slot-value 'flycheck-error '-end-line new-err) (+ (flycheck-error-end-line new-err) offset -1)) new-err)) errors)))))))) (defun my-flycheck-grammalecte-setup () "Build the flycheck checker, matching your taste." (interactive) (unless (grammalecte--version) (advice-add 'grammalecte-download-grammalecte :after-while #'flycheck-grammalecte--retry-setup)) (grammalecte--augment-pythonpath-if-needed) (flycheck-define-generic-checker 'my-grammalecte-narrowed "Report Grammalecte errors, but only for the narrowed section." :start #'my-flycheck-grammalecte-buffer :modes flycheck-grammalecte-enabled-modes :predicate (lambda () (if (functionp flycheck-grammalecte-predicate) (funcall flycheck-grammalecte-predicate) t)) :enabled #'grammalecte--version <span class="