vagrant

https://github.com/mitchellh/vagrant

Ruby

Vagrant is a tool for building and distributing development environments.

Vagrant::Action::Hook#append

Append a middleware to the end of the stack. Note that if the
middleware sequence ends early, then the new middleware won't
be run.

Source | Google | Stack overflow

Edit

git clone [email protected]:mitchellh/vagrant.git
cd vagrant
open lib/vagrant/action/hook.rb

Contribute

# Make a new branch
git checkout -b -your-name--update-docs-Vagrant--Action--Hook-append-for-pr

# Commit to git
git add lib/vagrant/action/hook.rbgit commit -m "better docs for Vagrant::Action::Hook#append"

# Open pull request
gem install hub # on a mac you can `brew install hub`
hub fork
git push <your name> -your-name--update-docs-Vagrant--Action--Hook-append-for-pr
hub pull-request

# Celebrate!