To review regular expresions I read this tutorial. Anyways that tutorial mentions that \\b matches a word boundary (between \\w and \\W characters). That tutori
You should use @"\bCOMPILATION UNIT". This is a verbatim literal. When you do "\b" instead, it parses \b into a special character. You can also do "\\b", whose double backslash is parsed into a real backslash, but it's generally easier to just use verbatims when dealing with regex.