RegEx/PowerShell/Attribute.regex.txt
\[
(?<AttributeName>[\w\.]+) \s{0,} \( # An open parenthesis (?<AttributeValue> (?> # Followed by... [^\(\)]+| # any number of non-parenthesis character OR \((?<Depth>)| # an open parenthesis (in which case increment depth) OR \)(?<-Depth>) # a closed parenthesis (in which case decrement depth) )*(?(Depth)(?!)) # until depth is 0. ) \) # followed by a closing parenthesis \] |