I use Moodle since version 1.9. I have a number of short answer question with regular expressions, that usee to work fine.
I upgraded from 2.3 to 2.8, and the last version doesn´t recognize the negative lookbehind code:
Students are looking at a Rx and the diagnosis is a normal x ray. (in spanish, anormal means abnormal).
This regexp works fine in Moodle 2.3, but not in 2.8.
Please some help