Originally Posted by ReaderRabbit
I thought this would work too, but it does not work for me
It works fine with my Sigil 7.1. version. Are you sure that you've selected the regex mode?
If all else fails, you could simply buy the book
Originally Posted by theducks
aren't the outer brackets supposed to be curved?
is a POSIX character class
and the two curly brackets after it specify 2 or more occurrences.
Of course, you'll also need to add two additional curved brackets around the Regex to define the backreference.