To prevent future contributors to introduce inconsistencies, I propose to add a unit test which enforce uniqueness of some lexer's metadata:

• name
• aliases
• mimetypes

That's a good idea, and I guess we could extend this in the future to make sure the version is not out of whack, etc. Thanks!

That's a good idea, and I guess we could extend this in the future to make sure the version is not out of whack, etc. Thanks!

Yes, that's the idea. But for this PR I played it safe and only validated the metadata I was familiar with from my last weeks experiments! :)