Here is quote from 2.0's release announce but changes from 2.0 to 2.1 are
unknown.
New in this version of RATS:
RATS can now descend through directories recursively, analyzing any supported
source code it finds.
Ability to output results as HTML or XML.
Result output can contain the line of code that caused each problem to be
reported, along with the column number in the source file the problem was
detected at.
RATS will now report various statistics at the end of the reporting phase,
including total time spend on the analysis, and number of source lines analyzed.
Various database additions.
A new database file, rats-openssl, which aids in analyzing any code that
utilizes the OpenSSL C API. (Thanks to Ben Laurie for contributing this
database)
o Utilize textproc/expat/buildlink.mk.
o Install data file to ${LOCALBASE}/libdata/rats instead of ${LOCALBASE}/lib.
It seems that Changes isn't available but PHP support was added.
