Is this a bug in .NET's Regex.Split?

Question

I have two regular expressions, for use with Regex.Split:

(?<=\\G[^,],[^,],)

and

(?<=\\G([^,],){2})


        

Answer 1

From docs:

If capturing parentheses are used in a Regex.Split expression, any captured text is included in the resulting string array.

You have a capture group in your second expression. Try non-capturing parens:

(?<=\G(?:[^,],){2})

Answer 2

From the documentation for Regex.Split

If capturing parentheses are used in a Regex.Split expression, any captured text is included in the resulting string array.

The internal parentheses are capturing. Try using (?:[^,],) instead.