use of ripgrep

Hi, I have ripgrep installed on macOS via cargo. I notice that claude code will use grep at times but have not seen it call ripgrep. Is there a way to determine if claude code has identified that rg is on the path or has access to it and is actively using it? I think it would be helpful to know this directly. I didn't see anything on the docs about it.

Second question. If I have extended docs (say in multiple txt files) what is the best way to let claude know they are there and should reference them? The same goes for if I download the source for a library I am using, can I have claude look through the source and check for implementation of a class or method and make sure it is being used correctly?