Use case:

In IndexedDB's Revision History section, we link to bugs that tracked changes, e.g.:

* Added {{IDBFactory/databases()}} method. ([Issue #31](https://github.com/w3c/IndexedDB/issues/31))
* Added {{IDBTransaction/commit()}} method. ([Issue #234](https://github.com/w3c/IndexedDB/issues/234))

Note that the numbers are repeated in the link text and url. This leads to frequent mis-linking because humans are squishy.

Bikeshed already has the context to link to the issue tracker, so given an appropriate grawlix around an issue number it could generate the hyperlink automagically.

Low priority. This may be too niche to matter.