### Rule details Warn when URLs are also defined identifiers. ### What type of rule is this? Warns about a potential problem ### Example code ```markdown [Mercury](mercury) is the first planet from the sun. [mercury]: https://example.com/mercury/ ``` ### Prior Art ```markdown [remark-lint-no-reference-like-url](https://github.com/remarkjs/remark-lint/tree/main/packages/remark-lint-no-reference-like-url) ``` ### Participation - [x] I am willing to submit a pull request to implement this rule. ### Additional comments While full URLs for definition identifiers are okay ([https://example.com]: https://example.com), and what looks like an identifier could be an actual URL ([text](alpha)), the more common case is that, assuming a definition [alpha]: https://example.com, then a link [text](alpha) should instead have been [text][alpha].