I believe a regex expression is wrong

[DKahn144]

It looks like the regex expression at Arguments.ArgumentRegExWithForwardSlash line 214 has an extra backslash at position 13 in the expression.

[jpdillingham]

The regular expression you see in source has forward slashes escaped to satisfy the C# compiler, so it won't look right to other applications or a human. Is there a string that is or isn't being matched? If so I can see about adding a test case.