Ability to use everything search suggestion in browser

[leml]

Hello, I understand that it's possible to add everything html as a search engine by syntax, see: viewtopic.php?p=77027
However, this will not give search suggestions in addressbar which would be extremely helpful.
I also want the search suggestions to be limited to find specific file types, so if the implementation for suggestions need tweaking to make that happen, please lemme know how to! Also prefer to open files as http://localhost:90/fileurl instead of file://fileurl.

PS Thanks for the awesome and extremely useful application <3

[leml]

Relevant links:
https://stackoverflow.com/questions/223 ... in-firefox
https://developer.mozilla.org/en-US/doc ... OpenSearch