I\'m trying to get command-t installed for vim but my current version of vim doesn\'t have the (+ruby) flag. The command \"which ruby\" shows that ruby is installed.
On mac os x, assuming you have Homebrew installed:
brew install https://raw.github.com/Homebrew/homebrew-dupes/master/vim.rb
This version of vim has ruby support enabled
Source: http://blog.jerodsanto.net/2011/08/brew-install-vim/
EDIT: edited the url, thanks @david-xia for mentioning the change
UPDATE: Apparently, homebrew vim now comes with ruby support enabled by default so you just need to do brew install vim (see comment below)