I recently came across a Splunk expression, as
rex "(?i)".*? (?P<fieldname>/\w+/((\w+\.\d+)|(\w+\d+))/((\w+/)|(\w+/\w+/)|((\w+/\w+/\w+/)))\D+((\?)|(\s)))\w+"
and due to the usage of toom many forward and backward slash, I am unable to understand it. Can you please help me in the matter?