Modification of Bryan Helmkamp's pair script

pair.rb

#!/usr/bin/env ruby

require 'yaml'

PAIR_EMAIL = "paired@developers.local"

AUTHORS = YAML.load(`cat ~/.pair.yml`)

unless File.exists?(".git")
  puts "This doesn't look like a git repository."
  exit 1
end

authors = ARGV.map do |initials|
  if AUTHORS[initials.downcase]
    AUTHORS[initials.downcase]
  else
    puts "Couldn't find author name for initials: #{initials}"
    exit 1
  end
end

if authors.any?
  if authors.size == 1
    authors = authors.first
  elsif authors.size == 2
    authors = authors.join(" and ")
  else
    authors = authors[0..-2].join(", ") + " and " + authors.last
  end
  
  `git config user.name '#{authors}'`
  `git config user.email '#{PAIR_EMAIL}'`
  
  puts "user.name = #{authors}"
  puts "user.email = #{PAIR_EMAIL}"
else
  `git config user.name 'removing'` # To prevent --remove-section errors when no user config exists
  `git config --remove-section user`
  
  puts "user.name = #{`git config user.name`}"
  puts "user.email = #{`git config user.email`}"
end