I agree there needs to be a sticky where there is a list of expressions that work and can be added to. Reading and working with regular expressions is like trying to learn an alien language. Also the expressions change depending on what language. It appears that calibre uses python regex.
I downloaded regexbuddy 3. which helps you craft them but it seems like calibre just won't accept some stuff that it says is good.
Anyway a sticky would be great. because your examples in the manual sad to say suxor
I'm going to start a new thread because i have a few more complicated regex questions and i don't want it buried at the end of a thread. cheers. btw thanks for creating such a great program!