It is supposed to accept a variable number of prefixes, and also to check if they are convertible to strings. This matches behavior documented in RubySpec.
Homebrew
Features, usage and installation instructions are summarized on the homepage.
What Packages Are Available?
- You can browse the Formula directory on GitHub.
 - Or type 
brew searchfor a list. - Or run 
brew serverto browse packages off of a local web server. - Or visit braumeister.org to browse packages online.
 
More Documentation
brew help or man brew or check our wiki.
Who Are You?
I'm Max Howell and I'm a splendid chap.
License
Code is under the BSD 2 Clause (NetBSD) license.
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