re = /\[(?:http(?:s)?(:\/\/)?)?(www\.)?discord\S*\]\(((?!discord)\S)*\)/m
str = '--- positives
[https://discord.com/scam](https://other-website.com/scammy-link)
[https://discord.com/scam](https://other-website.com)
[http://discord.com/scam](http://other-website.com/scam)
[www.discord.com/scam](www.other-website.com/scam)
[discord.gg/invite](https://other-website.com/scam)
[discord](https://other-website.com/scam)
--- negatives
[https://discord.com/not-scam](https://discord.com/not-scam)
[discord.com](https://www.discord.com/tos)
[discord invite](https://discord.gg/qwerty)
[discord.com/not-link](not a link)'
# 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