[BUGFIX] Fix comment parsing to support multiple comments (backported)

[ziegenberg]

Because of an eager consumption of whitespace, the rule parsing would swallow a trailing comment, meaning the comment for the next rule would be affected. This patch addresses this by only consuming real whitespace without comments after a rule.

Fixes #173

[oliverklee]

Thanks!

[oliverklee]

I'm a bit confused … do I need to forward-port this, or is this not necessary due to other upcoming changes in main?

(In general, if we want to create a PR that we are also planning to backport, we first create the PR for main and then backport it to the maintenance branch after it has been merged.)

[oliverklee]

I've now forward-ported this in #672. For future patches, please let's create the change for main first, and I (or another maintainer) will then take care of the backport. (This also works better with the branch protection in place, where we need another reviewer if we want to merge to main and would need to override this protection if we want to do a forward-port without an additional review.)

[ziegenberg]

I wasn't done with the patches. As the solution for v8.x looks very different from the proposed solution for v9.0, I was about to create different patches. Either back-porting or forward-porting would have meant a completely different approach.

[oliverklee]

All right. I’m looking forward to your PRs! 🙏

[oliverklee]

And if you think talking things through would be helpful, please feel free to chat me up.