devise

https://github.com/plataformatec/devise

Ruby

Flexible authentication solution for Rails with Warden.

Mail::Encodings.value_decode

Decodes a given string as Base64 or Quoted Printable, depending on what
type it is.

String has to be of the format =?<encoding>?[QB]?<string>?=

Source | Google | Stack overflow

Edit

git clone [email protected]:plataformatec/devise.git
cd devise
open

Contribute

# Make a new branch
git checkout -b -your-name--update-docs-Mail--Encodings-value_decode-for-pr

# Commit to git
git add git commit -m "better docs for Mail::Encodings.value_decode"

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

# Celebrate!