Code review comment for lp://qastaging/~quequotion/slingshot/fix-1635776

> It seems that the when search_entry gains focus it grabs all events, and the
> only ones we receive in Slingshot are the ones it does not process, like
> EventScroll, or several modifiers like Alt_L (which is why Alt+F4 still
> works), but for some reason it's consuming Escape key presses, so it stops
> working.
Alt+F4 does not work for me--are you sure that's working through slingshot or by the window manager? Neither does Shift+Backspace. Tab and the other keys work, so long as there's no text in the search box. I can't see how this is caused by this patch, although it apparently is.

> Also, when pressing F1 while search_entry has focus, Slingshot enters an
> infinite loop and starts receiving a keypress event for F1 like crazy, maybe
> this is what the original comment was referring to?.
I don't think so. That comment regarded the case of overriding key_press_event to change key handling (which requires im_context_filter_keypress to avoid an infinite loop and enable input methods), rather than using an EventBox to intercept input. I think you have found a different infinite loop. What should F1 do?