Mavericks に更新され、Xcode が更新されました。現在、brew を使用しようとすると、このエラーが発生します。
$ brew cleanup
/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:45:in `require': /usr/local/Library/Homebrew/extend/pathname.rb:259: invalid multibyte escape: /^\037\213/ (SyntaxError)
invalid multibyte escape: /^\037\235/
invalid multibyte escape: /^\xFD7zXZ\x00/
from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:45:in `require'
from /usr/local/Library/Homebrew/global.rb:1:in `<top (required)>'
from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:45:in `require'
from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:45:in `require'
from /usr/local/bin/brew:10:in `<main>'
何か案は?