1. A source code development system comprising: a host development environment executing in a host computing platform; and, automated classification logic coupled to the development environment, the automated defect classification logic comprising each of a classification parser, a lexical analyzer, and a mapper, the lexical analyzer comprising program code enabled to produce lexical tokens for the differences between two different versions of a line of source code as a defect, a classification parser comprising program code enabled to match the lexical tokens to a grammar in order to produce a lexical construct, the mapper comprising program code enabled to compare the lexical construct to coupled category mappings in order to locate a defect classification matching the lexical construct.