re = /[ab]b(?=([ab]))/m
str = '.abbba
#at_most 2 blue block surrounded_by blue
# Gives True because there are 2 matches
# Should be False'
# 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