Consistency Is Key

I’m sure I am not the only one who puzzles over Microsoft’s naming conventions for C#. I understand the Pascal and camel casing rules, but what I don’t get is the exception made for two letter acronyms. I’m looking at creating a dictionary of my code so that I can start to see patterns and opportunities for re-use. To do this I need to be able to break up the name of a method or class into its constituent parts. Regular expressions seemed like a good way to go. It is fairly trivial to write a regex that matches the parts that make up a Pascal and camel cased identifier. What makes this tricky is the exception for short acronyms. Here is my attempt:

Regex splitName = new Regex(@”^I(?=(\p{Lu}{2})*(\p{Lu}\p{Ll}|$))|(^\p{Ll}+|\p{Lu}\p{Ll}+|\p{Lu}{2})”);

It breaks down like so: