vagrant

https://github.com/mitchellh/vagrant

Ruby

Vagrant is a tool for building and distributing development environments.

Vagrant::Util::Env.with_clean_env

Execute the given command, removing any Ruby-specific environment
variables. This is an "enhanced" version of `Bundler.with_clean_env`,
which only removes Bundler-specific values. We need to remove all
values, specifically:

- _ORIGINAL_GEM_PATH
- GEM_PATH
- GEM_HOME
- GEM_ROOT
- BUNDLE_BIN_PATH
- BUNDLE_GEMFILE
- RUBYLIB
- RUBYOPT
- RUBY_ENGINE
- RUBY_ROOT
- RUBY_VERSION

This will escape Vagrant's environment entirely, which is required if
calling an executable that lives in another Ruby environment. The
original environment restored at the end of this call.

Source | Google | Stack overflow

Edit

git clone [email protected]:mitchellh/vagrant.git

cd vagrant

open lib/vagrant/util/env.rb

Contribute

# Make a new branch

git checkout -b -your-name--update-docs-Vagrant--Util--Env-with_clean_env-for-pr

# Commit to git

git add lib/vagrant/util/env.rbgit commit -m "better docs for Vagrant::Util::Env.with_clean_env"

# 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--Util--Env-with_clean_env-for-pr

hub pull-request

# Celebrate!