re = /(&[lmnok])(.*?)(&r|$)/m
str = ' plain &kobfuscated &r&lbold &r&mstrikethrough &r&nunderline &r&oitalic &r&l&mbold-strikethrough &r&lbold &mbold-strikethrough &rplain'
# 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