namespace :whitespace do desc 'Removes trailing whitespace' task :cleanup do sh %{find . -name '*.rb' -exec sed -i '' 's/ *$//g' {} \\;} end desc 'Converts hard-tabs into two-space soft-tabs' task :retab do sh %{find . -name '*.rb' -exec sed -i '' 's/\t/ /g' {} \\;} end end