mxcl/homebrew — pull request #21571 by rhysd (2013-07-31 16:30:26+00:00)
Title: Added rbenv option for ruby interface of MacVim

I added --use-rbenv-ruby as an install option.
Default ruby in Mac is version 1.8.6 and it's too old.
If you use --use-rbenv-ruby, you can use latest ruby in your Vim.
Thanks.