How to copy a selection to the OS X clipboard

Question

I have an area selected in Vim. How can I copy it into the OS X clipboard?

(The OS X clipboard can be written to via a pipe to /usr/bin/pbcopy)

Answer 1

What worked for me in my .vimrc

set clipboard=unnamed
if has("unnamedplus") " X11 support
    set clipboard+=unnamedplus
endif