Following the suggestions in this post, I have all my R code related to a project in a folder called /R. Let's say I have a function called foo1. For readability, I want to change the name of foo1 to fooSomethingMoreMeaningful. How do I find all the places in my code where there are calls to foo1 so I can change those to fooSomethingMoreMeaningful? I know how to search within a file, but how would I search for calls to foo1 across all the files in the /R folder? Thank you.