Originally Posted by Jellby
A trick: when I need to differentiate between single quotes and apostrophes, I use ‘ ’ for the quotes and & #8217; (without space) for the apostrophe. The character is exactly the same, but that allows for better search and replace in the future. I don't know if Sigil would keep this, though.
Thanks for that tip! (It's one of many "I should have thought of that" permutations I've encountered on these forums...)