Ruby 2.0.0-p195 - Changelog

What's new in Ruby 2.0.0-p0:

February 25th, 2013

Language core features:

· Keyword arguments, which give flexibility to API design
· Module#prepend, which is a new way to extend a class
· A literal %i, which creates an array of symbols easily
· __dir__, which returns the dirname of the file currently being executed
· The UTF-8 default encoding, which make many magic comments omissible

Built-in libraries:

· Enumerable#lazy and Enumerator::Lazy, for (possibly infinite) lazy stream
· Enumerator#size and Range#size, for lazy size evaluation
· #to_h, which is a new convention for conversion to Hash
· Onigmo, which is a new regexp engine (a fork of Oniguruma)
· Asynchronous exception handling API

Debug support:

· DTrace support, which enables run-time diagnosis in production
· TracePoint, which is an improved tracing API

Performance improvements:

· GC optimization by bitmap marking
· Kernel#require optimization which makes Rails startup very fast
· VM optimization such as method dispatch
· Float operation optimization

What's new in Ruby 1.9.3-p392:

February 22nd, 2013

This release includes security fixes about bundled JSON and REXML:

· Denial of Service and Unsafe Object Creation Vulnerability in JSON (CVE-2013-0269)
· Entity expansion DoS vulnerability in REXML (XML bomb)

· And some small bugfixes are also included.

What's new in Ruby 1.9.3-p385:

February 7th, 2013

· This release includes a security fix about bundled RDoc.

What's new in Ruby 1.9.3-p384:

February 6th, 2013

· This release includes a security fix about bundled RDoc.

What's new in Ruby 1.9.3-p286:

October 12th, 2012

· $SAFE escaping vulnerability about Exception#to_s / NameError#to_s (CVE-2012-4464, CVE-2012-4466)
· Unintentional file creation caused by inserting a illegal NUL character
· other many bug fixes.