Checkout branch named after title of a Github issue

issue-branch

#!/usr/bin/env ruby

require 'net/http'
require 'json'

token = ENV['GITHUB_TOKEN']
issue_id = ARGV.first

# get org and repo
repo_url = `git config --get remote.origin.url`.strip
repo = /([\w,-]*\/.*)\.git/.match(repo_url)[1]

unless token || issue_id || repo
  puts "Missing parameter. Known values: issue-id=#{issue_id.inspect} repo=#{repo.inspect} token=#{token.inspect}"
  exit(1)
end

# fetch issue details
uri = URI.parse("https://api.github.com/repos/#{repo}/issues/#{issue_id}?access_token=#{token}")
json = Net::HTTP.get(uri)
response = JSON.parse(json)

title = response['title']
  .downcase
  .gsub(/[^0-9A-Za-z\s]/, '') # remove special characters
  .gsub(' ', '-').strip # replace whitespace with dash

# checkout branch
system "git checkout -b #{title}"

Usage:

$ issue-branch <issue-id>

Requires a github token in env as GITHUB_TOKEN. Create one here https://github.com/settings/tokens/new