Mailing the story:

Codase is a new kind of search service for open source code. Rather than treating code as text, Codase understands programming languages, and treats code as code, the way it's supposed to be. This unique and syntax-aware approach provides the most accurate and detailed search results with fine granularity levels of controls. With Codase, developers can search functions, classes, strings, constants, macros, comments and other programming language constructs.