Ruby Filewatcher Interrupt Bug

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# See https://github.com/thomasfl/filewatcher/issues/24

$ gem install filewatcher -v0.4.0
$ gem uninstall filewatcher -v0.5.0
$ rvm list
$ ruby -v
$ gem list filewatcher
$ ./test.rb
$ gem install filewatcher
$ gem list filewatcher
$ ./test.rb
$ gem uninstall filewatcher -v0.5.0

test.rb

#!/usr/bin/env ruby

# With 0.4.0, Ctrl+C is exiting properly. With 0.5.0 it shows 
# stack trace

# trap("SIGINT") { puts "\033[2K\rGoodbye"; exit } # claener
trap("SIGINT") { puts "\nGoodbye"; exit }

puts "Watching files..."
fork { exec "filewatcher 'test.rb' 'echo changed'" }

# In real life this is exec'ing Shopify's "theme watch" command
# I copied the bare minimum code from it to the theme.rb file
# See https://github.com/Shopify/shopify_theme/search?utf8=%E2%9C%93&q=watcher
puts "Watching theme..."
fork { exec "./theme.rb" }

Process.waitall

theme.rb

#!/usr/bin/env ruby
require 'filewatcher'

def watcher
	FileWatcher.new(Dir.pwd).watch() do |filename, event|
		yield(filename, event)
	end
end

watcher do |filename, event|
	puts "changed #{filename}"
end