I'd like to access the system clipboard in Mountain Lion as a register in vim.
The vim that comes with Mountain Lion is built with -xterm_clipboard shown in vim --version. Homebrew has a formula for vim in the dupes collection that also builds with -xterm_clipboard. After editing the formula I'm now building vim with +xterm_clipboard. However, going into vim and using :reg to see the registers doesn't show the contents of the system clipboard in any register.
How can I get this to work?