Open vim at specified line

v.rb

#!/usr/bin/env ruby1.9.1
require 'shellwords'

files = []
opts = []
ARGV.each do |f|
  if File.exists? f
    files << [f, nil]
  elsif f =~ /(.+):(.+?):?$/
    if File.exists? $1
      files << [$1, $2]
    else
      $stderr.puts %(WARNING: file #$1 does not exist, treating "#{f}" as an option)
      opts << f
    end
  else
    opts << f
  end
end

cmd = ["vim", *opts]
if files.empty?
elsif files.length == 1
  file = files.first
  cmd << file[0]
  cmd << "+" + file[1] if file[1]
else
  plus = []
  files.each do |file|
    plus << "tabe #{file[0].shellescape}"
    plus << file[1] if file[1]
  end
  cmd << "+" + plus.join(' | ') << "+tabr|q"
end

exec *cmd