Summary

There are multiple variants here

[https://ahoi.io](https://ahoi.io)
[fun](../fun.html)
[struct Foo](super::Foo)

• detect valid urls in [] so spell checkings can be ignored in that span [https://ahoi.io](https://ahoi.io)
• links to struct items should be ignored in spell checks
• add a flag to verify the linked to destinations exist

The method WordList.QuerySuggest.Phonet has two nested loops that query for entries from a PhoneTable that have rules starting with a given character. Indexing these entries in the table by the first rule character may have a positive impact on performance.