Atom-Lint

Generic code linting support for Atom.

Supported Linters

More linters will be supported in the future.

• RuboCop for Ruby
• flake8 for Python
• HLint for Haskell (Installation of language-haskell package is required)
• JSHint for JavaScript
• CoffeeLint for CoffeeScript
• gc for Go
• CSSLint for CSS
• SCSS-Lint for SCSS
• puppet-lint for Puppet (Installation of language-puppet package is required)
• ShellCheck for shell script
• Clang for C/C++/Objective-C
• rustc for Rust (Installation of language-rust package is required)
• erlc for Erlang (Installation of language-erlang package is required)

Features

• Seamless integration with Atom as if it's a built-in package.
• Code highlighting – you don't need to move your eyes from the code to see the violations.
• Clean UI – it honors the colors of your favorite Atom theme.

Installation

$ apm install atom-lint

If the current Atom has been launched via GUI (e.g. Dock/Finder on OS X), once quit and re-launch it from your shell with the atom command. This is required only once and important to handle the PATH environment variable properly. See Linter Executable Paths for more details.

Usage

Your source will be linted on open and on save automatically. The detected violations will be displayed as arrows in the editor. You can see the detail of the violation by moving the cursor to it.

Keymaps

• Ctrl-Alt-L: Global toggle
• Ctrl-Alt-[: Move to Previous Violation
• Ctrl-Alt-]: Move to Next Violation
• Ctrl-Alt-M: Toggle Violation Metadata (toggle configuration atom-lint.showViolationMetadata)

Also you can customize keymaps by editing ~/.atom/keymap.cson (choose Open Your Keymap in Atom menu):

'.workspace':
  'ctrl-alt-l': 'lint:toggle'
  'ctrl-alt-m': 'lint:toggle-violation-metadata'
'.editor':
  'ctrl-alt-[': 'lint:move-to-previous-violation'
  'ctrl-alt-]': 'lint:move-to-next-violation'

See Customizing Atom for more details.

Configuration

You can configure Atom-Lint by editing ~/.atom/config.cson (choose Open Your Config in Atom menu):

# Some other settings...
'atom-lint':
  'ignoredNames': [
    'tmp/**'
  ]
  'showViolationMetadata': true
  'clang':
    'path': '/path/to/bin/clang'
    'headerSearchPaths': ['/path/to/include','/path2/to/include']
    'mergeAtomLintConfigIntoAutoDiscoveredFlags': true # If you want to add defaults to discovered project-specific clang flags
  'coffeelint':
    'path': '/path/to/bin/coffeelint'
  'csslint':
    'path': '/path/to/bin/csslint'
    'rules': # See http://csslint.net/about.html for rules
      'ignore': [
        'adjoining-classes'
      ]
      'errors': []
      'warnings': []
  'erlc':
    'path': '/path/to/bin/erlc'
  'flake8':
    'path': '/path/to/bin/flake8'
    'configPath': '/path/to/your/config' # Passed to flake 8 via --config option
  'gc':
    'path': '/path/to/bin/go'
  'hlint':
    'path': '/path/to/bin/hlint'
  'jshint':
    'path': '/path/to/bin/jshint'
  'puppet-lint':
    'path': '/path/to/bin/puppet-lint'
  'rubocop':
    'path': '/path/to/bin/rubocop'
  'rustc':
    'path': '/path/to/bin/rustc'
  'scss-lint':
    'path': '/path/to/bin/scss-lint'
  'shellcheck':
    'path': '/path/to/bin/shellcheck'

Linter Executable Paths

• atom-lint.LINTER.path

Normally you can omit this setting.

There's an issue that environment variables in Atom varies depending on whether it's launched via shell or GUI. If it's launched via GUI, it cannot get the environment variables set in your shell rc files like PATH. To handle this issue, when Atom is launched via shell, Atom-Lint automatically saves the environment variables, and from then on it will use the saved variables on linter invocation even if Atom is launched via GUI.

If you're using a language version manager such as rbenv, linters need be installed in the default/global environment of the version manager (i.e. the environment where you opened a new terminal). If you need to use a non-default executable, use this setting.

File Patterns to Ignore

• atom-lint.ignoredNames (Global)
• atom-lint.LINTER.ignoredNames (Per Linter)

You can specify lists of file patterns to disable linting. The global patterns and the per linter patterns will be merged on evaluation so that you can make these lists DRY.

'atom-lint':
  'ignoredNames': [
    'tmp/**'
  ]
  'rubocop':
    'ignoredNames': [
      'vendor/**'
      'db/schema.rb'
    ]

With the above example, all of tmp/**, vendor/** and db/schema.db are ignored when RuboCop is active.

The pattern must be relative to the project root directory. The pattern format is basically the same as the shell expansion and .gitignore. See minimatch for more details.

Clang Specific Configuration

Header Search Paths

• atom-lint.clang.headerSearchPaths

Specify additional header search paths. These paths are passed to clang with -I option.

Project-Specific Flags and Atom-Lint's configuration

This feature is temporarily disabled now.

• atom-lint.clang.mergeAtomLintConfigIntoAutoDiscoveredFlags

Atom-Lint automatically picks up your project-specific compiler flags (currenly .clang-complete format is supported) via clang-flags module. By default, if a custom flag file is found, Atom-Lint uses only the flags specified in the file and ignores other configuration (e.g. the headerSearchPaths above). If you want to use both the project-specific flags and Atom-Lint's configuration, set this mergeAtomLintConfigIntoAutoDiscoveredFlags to true.

CSSLint Specific Configuration

Custom Rules

• atom-lint.csslint.rules.errors
• atom-lint.csslint.rules.warnings
• atom-lint.csslint.rules.ignore

These are passed to csslint with --errors, --warnings or --ignore option.

Contributors

Here's a list of all contributors to Atom-Lint.

Changelog

Atom-Lint's changelog is available here.

License

Copyright (c) 2014 Yuji Nakayama

See the LICENSE.txt for details.