devise

https://github.com/plataformatec/devise

Ruby

Flexible authentication solution for Rails with Warden.

Mail::Multibyte::Chars#normalize

Returns the KC normalization of the string by default. NFKC is considered the best normalization form for
passing strings to databases and validations.

* <tt>form</tt> - The form you want to normalize in. Should be one of the following:
  <tt>:c</tt>, <tt>:kc</tt>, <tt>:d</tt>, or <tt>:kd</tt>. Default is
  Mail::Multibyte::Unicode.default_normalization_form

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--Multibyte--Chars-normalize-for-pr

# Commit to git

git add git commit -m "better docs for Mail::Multibyte::Chars#normalize"

# 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--Multibyte--Chars-normalize-for-pr

hub pull-request

# Celebrate!