JRuby 1.7.19 发布，该版本值得关注的改进：
17 issues fixed for 1.7.19
Time.getlocal accepts fixnum as an argument (Rails 4.2 blocker)
A few encoding fixes
Socket.read(0) does not block (1.9)
Github 上修复的 issue 列表：
#2528 - RegexpError: invalid multibyte character
#2451 - No need to synchronise a newly created local RubyArray
#2446 - ConcurrentModificationException from ThreadGroup.list
#2438 - Time#getlocal should accept Fixnum as an argument
#2434 - String#start_with? inconsistent with other Ruby implementations
#2426 - NullPointerException when trying to assign UnboundMethod using define_method & to_proc
#2419 - Encoding issue after v1.7.6
#2402 - (MAINT) fix jnr-constants version in pom
#2401 - (MAINT) Fix pom deps re: asm
#2386 - JRuby fails to display Java splash at startup on OS X
#2349 - Fix for issue 1675 on jruby-1_7: String#casecmp on UTF-16LE encoded string
#2343 - some error with RG with embedded JRuby
#2338 - String#b improperly updates encoding of source string
#2333 - ChannelDescriptor leak after close of ScriptingContainer
#2292 - Remove unnecessary puts for GC::Profiler.total_time
#1675 - casecmp on UTF-16LE encoded string produces ArrayIndexOutOfBoundsException
#1637 - Socket.read(0) blocks caller (but not in MRI)
下载地址：https://s3.amazonaws.com/jruby.org/downloads/1.7.19/jruby-bin-1.7.19.tar.gz
来自:开源中国社区
