Testing for a possible regexp bug on 1.9.2-290

regexp_bug_investigation.rb

#!/usr/bin/env ruby

regexp = /^([A-Z]{1,4})([0-9]{1,4})$/

text_phrases = 
  [ "ABCD1234", 
    "ABCDE1234", 
    "ABCD12345", 
    "ABCDE12345"]

puts RUBY_DESCRIPTION

text_phrases.each do |tp|
  match = tp.match regexp
  if match
    puts "#{tp} matches #{regexp.inspect} capturing: #{match.captures}"
  else
    puts "#{tp} doesn't match #{regexp.inspect}"
  end
end

Hi, ran in irb (am Windows) and got below (expected results)
As per http://www.ruby-forum.com/topic/3476712#1041898 when running from Windows cmd it turns out swapping double/single quotes around gave expected behaviour.

ABCD1234 matches /^([A-Z]{1,4})([0-9]{1,4})$/ capturing: ["ABCD", "1234"]
ABCDE1234 doesn't match /^([A-Z]{1,4})([0-9]{1,4})$/
ABCD12345 doesn't match /^([A-Z]{1,4})([0-9]{1,4})$/
ABCDE12345 doesn't match /^([A-Z]{1,4})([0-9]{1,4})$/