Finding the end of a substring match in .NET

Question

I am trying to find the index of a substring in a string that matches another string under a specific culture (provided from a System.CultureInfo).

For example the string "ass" matches the substring "aß" in "straße" under a German culture.

I can find the index of the start of the match using

culture.CompareInfo.IndexOf(value, substring);

but without resorting to brute force, is there an easy way of identifying that 2 characters were matched, and not 3?

Answer 1

Does regular expressions handle that distinction of ss vs. ß?

Answer 2

If you use a capture group, you can capture the exact match that was found, and from that you can determine how many characters were matched.

I'm a bit timestressed right now to give an example, so I hope you can figure it out from my description.

Perhaps I'll ammend my answer later.

Dave