re = /^(\d|\[\d-\d\]| )+$/m
str = '0[1-3]123 45
[1-3]123 45
05[1-3]123 45
0[1-3]555 6789
0332 555 6789
0[1-11]123 45
[1-3]123a 34
[0-5]212123 45 67
[0-5]21223 45 67
[0-5]21223 45 67
1231232131 '
# Print the match result
str.scan(re) do |match|
puts match.to_s
end
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Ruby, please visit: http://ruby-doc.org/core-2.2.0/Regexp.html