Whitespace

Whitespace is a tool for validating and stripping trailing whitespace.

Installation

Add this line to your application's Gemfile:

gem 'whitespace'

And then execute:

$ bundle

Or install it yourself as:

$ gem install whitespace

Usage

The --ignored-paths flag works for both the validate and the strip. It's used to specify a list of paths that will be ignored. By default the following paths are ignored: .git, .svn and .hg.

Validate trailing whitespace

The validate command will check all files in the given path (or the current directory) for trailing whitespace. If any trailing whitespace is found, the filename, line number and line content will be printed, with the trailing whitespace highlighted.

echo "foo " > foo.txt
ws validate

Will print something like:

./foo.txt:1:foo

Strip trailing whitespace

The strip command will strip/remove trailing whitespace in all files in the given path (or the current directory).

echo "foo " > foo.txt
ws strip
grep -E ' +$' foo.txt

The above grep command will not match anything.

Development

After checking out the repo, run bin/setup to install dependencies. Then, run ./travis.sh to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment. To run the actual command, run exe/ws.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/jacob-carlborg/whitespace.