vim formula with ruby support for brew

vim.rb

require 'formula'

class Vim <Formula
  url 'ftp://ftp.vim.org/pub/vim/unix/vim-7.3.tar.bz2'
  homepage 'http://www.vim.org/'
  md5 '5b9510a17074e2b37d8bb38ae09edbf2'
  version '7.3.135'

  def patchlevel; 135 end
  def features; %w(tiny small normal big huge) end
  def interp; %w(lua mzscheme perl python python3 tcl ruby) end

  def options
    features.map {|f| ["--#{f}", "Configure with --with-feature-#{f}"] } \
    | interp.map {|i| ["--#{i}", "Configure with --enable-#{i}interp"] }
  end

  def patches
    patches = (1..patchlevel).map {|i| sprintf('ftp://ftp.vim.org/pub/vim/patches/7.3/7.3.%03d', i) }
    {:p0 => patches}
  end

  def install
    feature = features.find {|f| ARGV.include? "--#{f}" } || "normal"
    opts = []
    interp.each do |i|
      if ARGV.include? "--#{i}"
        opts << "--enable-#{i}interp=yes"
        opts << "--with-lua-prefix=/usr/local" if i == "lua"
      end
    end
    system "./configure",
"--enable-rubyinterp",
      "--disable-gui",
      "--without-x",
      "--disable-gpm",
      "--disable-nls",
      "--with-tlib=ncurses",
      "--enable-multibyte",
      "--with-features=#{feature}",
      "--prefix=#{prefix}",
      "--mandir=#{man}",
      *opts
    system "make install"
  end

  # Suppress brew-audit. Silly, but it works.
  # ARGV.include? "--tiny"; ARGV.include? "--small"
  # ARGV.include? "--normal"
  # ARGV.include? "--big";  ARGV.include? "--huge"
  # ARGV.include? "--lua";  ARGV.include? "--mzscheme"
  # ARGV.include? "--tcl";  ARGV.include? "--ruby"
  # ARGV.include? "--perl"; ARGV.include? "--python"
  # ARGV.include? "--python3"
  #
  # Maybe we should deprecate these options and add
  # `--with-features=' and `--enable-interp='.

end

brew install gist_url