Originally Posted by cybmole
well you could use a hybrid approach.
So, to sum it up for now, we can try first to use calibre epub to epub
conversion as a sniffing dog on a copy of our EPUB. This conversion should provide us with us some modified selectors names (the one calibre needed to modify).
Then, as DiapDealer said, we can come back to the original EPUB and ask these modified selectors the \bsuspect\b question.
Thanks for these tips.
I keep the file open because, of course, there could be other proposals.