compass

https://github.com/chriseppstein/compass

CSS

Compass is no longer actively maintained. Compass is a Stylesheet Authoring Environment that makes your website design simpler to implement and easier to maintain.

DeclarativePolicy::Base::AbilityMap#merge

This merge behavior is different than regular hashes - if both
share a key, the values at that key are concatenated, rather than
overridden.

Source | Google | Stack overflow

Edit

git clone [email protected]:chriseppstein/compass.git
cd compass
open

Contribute

# Make a new branch

git checkout -b -your-name--update-docs-DeclarativePolicy--Base--AbilityMap-merge-for-pr

# Commit to git

git add git commit -m "better docs for DeclarativePolicy::Base::AbilityMap#merge"

# Open pull request

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

hub fork

git push <your name> -your-name--update-docs-DeclarativePolicy--Base--AbilityMap-merge-for-pr

hub pull-request

# Celebrate!