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Flycheck

On the fly syntax checking for GNU Emacs

Install / Use

/learn @flycheck/Flycheck
About this skill

Quality Score

0/100

Supported Platforms

Universal

README

![Flycheck][logo]

[License GPL 3][COPYING] MELPA MELPA stable version NonGNU ELPA CI Docs

https://www.flycheck.org

Modern on-the-fly syntax checking extension for GNU Emacs. [Try it][]!

Getting Started

Flycheck is available for installation with package.el on NonGNU ELPA, MELPA Stable and MELPA.

You can install Flycheck with the following command:

<kbd>M-x</kbd> package-install <kbd>[RET]</kbd> flycheck <kbd>[RET]</kbd>

Finally add this to your Emacs config:

(global-flycheck-mode +1)

Alternatively, if you're into use-package you can do the following:

(use-package flycheck
  :ensure t
  :config
  (add-hook 'after-init-hook #'global-flycheck-mode))

Now you can start using any of the bundled checkers or install additional checkers.

For a more gentle introduction read the [Installation][] instructions and go through [Quickstart][] guide.

Getting Help

Please ask questions about Flycheck on [Stack Exchange][sx] and report bugs to our [issue tracker][].

Contributing

We welcome all kinds of contributions, whether you write patches, open pull requests, write documentation, help others with Flycheck issues, or just tell other people about your experiences with Flycheck. Please take a look at our [Contributor’s Guide][contrib] for help and guidance about contributing to Flycheck.

Sponsoring

You can support financially the development of Flycheck and related packages via:

Open Collective Backers

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Open Collective Sponsors

Become a sponsor and get your logo on our README on Github with a link to your site. [Become a sponsor]

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View on GitHub
GitHub Stars2.5k
CategoryDevelopment
Updated7h ago
Forks456

Languages

Emacs Lisp

Security Score

100/100

Audited on Mar 27, 2026

No findings