Ready to get my feet wet w/ some testing. I was thinking of doing some test for Sytem.Text.RegularExpressions. I see that there are some issues based upon the notes.txt found in mcs/class/System/System.Text.RegularExpressions. Is there anything that I should not bother testing (ie lookaround, certain character classes, etc)? Is the behavior expected to match exactly what the Microsoft implementation does?