rubocop

https://github.com/bbatsov/rubocop

Ruby

A Ruby static code analyzer, based on the community Ruby style guide.

RuboCop::TargetFinder#target_files_in_dir

Finds all Ruby source files under the current or other supplied
directory. A Ruby source file is defined as a file with the `.rb`
extension or a file with no extension that has a ruby shebang line
as its first line.
It is possible to specify includes and excludes using the config file,
so you can include other Ruby files like Rakefiles and gemspecs.

Source | Google | Stack overflow

Edit

git clone [email protected]:bbatsov/rubocop.git

cd rubocop

open lib/rubocop/target_finder.rb

Contribute

# Make a new branch

git checkout -b -your-name--update-docs-RuboCop--TargetFinder-target_files_in_dir-for-pr

# Commit to git

git add lib/rubocop/target_finder.rbgit commit -m "better docs for RuboCop::TargetFinder#target_files_in_dir"

# Open pull request

gem install hub # on a mac you can `brew install hub`

hub fork

git push <your name> -your-name--update-docs-RuboCop--TargetFinder-target_files_in_dir-for-pr

hub pull-request

# Celebrate!