It does appear to work, perhaps I had too many notes with PDF attachements (>500) and it took longer than I anticipated for the OCR function to process all of them. I guess a status bar would be helpful.
Anyway, no the issue is that the search results sort the matching notes in apparently random order, would like a way to sort the results reverse-chronologically.
A couple of other threads mention the "find in resource" plugin, but it's not quite what I want. I want to be able to use the main search window and find matching text inside a PDF. not OCR text from a PDF, but a PDF with actual text in it. I would like search results to return matches from a PDF.
I thought maybe the OCR function would just index the text inside a PDF and make it available to search but it does not seem to do this.