Provides Linting functionality to TextMate to make it easier to write better quality code.

• Linting on request of Bash, JSON, Markdown and Ruby files
• Strips trailing whitespace on request from the end of lines (except after Ruby __END__ blocks)
• Adds trailing newlines on request to the end of files missing them
• If set in .tm_properties's scopeProperties (space separated, set either globally or for a given language like [ source.ruby ]):
  • bundle.linter.lint-on-save automatically runs Linter on save for supported file types
  • bundle.linter.strip-whitespace-on-save automatically strips trailing whitespace on save
  • bundle.linter.ensure-newline-on-save automatically adds a training newline on save
  • bundle.linter.fix-on-save automatically fixes lints if possible (e.g. with RuboCop)

• bash -n (found in LINTER_BASH, BASH or PATH environment variables)
• shellcheck (brew install shellcheck, found in LINTER_SHELLCHECK, SHELLCHECK or PATH environment variables)

• JSON.parse in Ruby (found in LINTER_RUBY, RUBY or PATH environment variables)
• jsonlint (brew install jsonlint, found in LINTER_JSONLINT, JSONLINT or PATH environment variables)

• list of hedge words
• alex (brew install alex, found in LINTER_ALEX, ALEX or PATH environment variables)
• write-good (brew install write-good, found in LINTER_ALEX, ALEX or PATH environment variables)

• ruby -wc (found in LINTER_RUBY, RUBY or PATH environment variables)
• rubocop (gem install --user rubocop, found in LINTER_RUBOCOP, RUBOCOP or PATH environment variables)

mkdir -p ~/Library/Application\ Support/TextMate/Bundles
cd ~/Library/Application\ Support/TextMate/Bundles
git clone https://github.com/MikeMcQuaid/Linter.tmbundle

The above features work for my day-to-day use.

Tested using TextMate 2. May work in TextMate 1 or Sublime Text; I've no idea.

Patches welcome.

@MikeMcQuaid

Linter.tmbundle is under the MIT License. The full license text is available in LICENSE.txt.