metasploit-framework

https://github.com/rapid7/metasploit-framework

Ruby

Metasploit Framework

Metasm::Expression#externals

returns the array of non-numeric members of the expression
if a variables appears 3 times, it will be present 3 times in the returned array

Source | Google | Stack overflow

Edit

git clone [email protected]:rapid7/metasploit-framework.git
cd metasploit-framework
open lib/metasm/metasm/main.rb

Contribute

# Make a new branch
git checkout -b -your-name--update-docs-Metasm--Expression-externals-for-pr

# Commit to git
git add lib/metasm/metasm/main.rbgit commit -m "better docs for Metasm::Expression#externals"

# Open pull request
gem install hub # on a mac you can `brew install hub`
hub fork
git push <your name> -your-name--update-docs-Metasm--Expression-externals-for-pr
hub pull-request

# Celebrate!