I have hundreds of Mathematica notebooks accumulated over the years, and I'd like to search over them.
I've been using various versions of text search (grep, SilverSearcher, Spotlight), but there are limitations. For instance, just now I needed to find where I have used the utility function
toc. Searching for text string
toc[ doesn't work because the raw text in .nb is
Older versions of Mathematica offered to install notebook indexing plug-in for Spotlight, but I no longer get this option.