exe/sym in sym-2.8.5 vs exe/sym in sym-2.10.0

@@ -1,18 +1,21 @@
 #!/usr/bin/env ruby
+# vim: ft=ruby
 
+require_relative '../lib/ruby_warnings'
+
 lib_path = File.expand_path(File.dirname(__FILE__) + '/../lib')
 $LOAD_PATH << lib_path if File.exist?(lib_path) && !$LOAD_PATH.include?(lib_path)
 
 require 'sym'
 require 'sym/app'
 
-#ARGV.any?{ |a| a =~ /^-/ } ?
+# ARGV.any?{ |a| a =~ /^-/ } ?
 begin
   exit ::Sym::App::CLI.new(ARGV.dup).execute
 rescue Interrupt => e
   STDERR.flush
-  STDERR.puts "Interrupt, #{e.message}, exiting."
+  warn "Interrupt, #{e.message}, exiting."
   STDERR.flush
   exit 1
 end