Can't do regex search after opening notebook

[roblourens]

• Open a notebook
• I want to do a regex search in normal text files in my workspace, but the option is disabled

This caught me off guard, I see that I have to disable searching in rendered markdown to enable regex mode, which makes sense, but I don't want to search in notebooks right now. Does it search in rendered markdown by default?

One thing that would be helpful would be to have a tooltip to tell me why regex search is disabled

[andreamah]

I believe that I originally had it like this because notebook outputs and markdown preview doesn't support regex search, but I agree that it's unexpected to just disable regex straight-out. For now, I'm going to keep regex enabled no matter which options in the notebook find widget are checked (since, by default, all are checked).

That would probably have a smaller impact on users, since it'll just do a plain non-regex search when looking in outputs/previews. Will do full fix (finding better way to convey to users that outputs/previews can't be regex searched) in #183882.