Apply search only to files that are in quickfix list

Hello,

Thank you for the amazing plugin, I was using it as my daily search tool for over 5 mounts now, and was working great.

I'm using different tools in order filter the files that i need to work on, those are pushed at the end to quickfix list.

I was wondering if it is possible to apply search query to only those files ?

The issue does not name a file, test, or entry point. Start by locating how search queries are handled and how the quickfix list is read; done means searches are limited to files currently in that list without changing the existing search behavior for other uses.

Written by the indexing model from the issue text.