and replace with
Only, I'm stupid. First, I forget to click 'case sensitive'. Second, I don't notice that () are special characters and don't get matched. So every instance of the word 'throw' in the project gets replaced by upper-case NOTHROW. Including, say, all the NOTHROWs we already had, which are now NONOTHROW.
Third, I spend the next hour or two searching through the code trying to clean up the HUMONGOUS mess I just created. x.x