JRuby 1.7.18 发布，Java 版的 Ruby 解释器

• 修复了 20 个 issues

• 支持 non-ASCII Symbols 

• 修复原生 crypt() 方面的回退问题

• 更新 stdlib 来匹配 MRI (C Ruby) 分支 level 551

相关链接：

• Homepage: http://www.jruby.org/

• Download: http://www.jruby.org/download

Github Issues resolved for 1.7.18

• #2342 - Java::JavaLang::NullPointerException:      org.jruby.RubyString.crypt(RubyString.java:2660)

• #2331 - File.realpath treats absolute "classpath:/" paths as relative paths

• #2327 - added String#b method

• #2316 - I/O calls do not invalidate `String#ascii_only?` cache

• #2310 - ArgumentError: "+HH:MM" or "-HH:MM" expected for utc_offset

• #2307 - ConstantCompilationTest.testContainerCompilation regression

• #2304 - Unable to use JRuby with google app engine due to use of sun.misc.Unsafe

• #2302 - Update JRuby 1.7.x to latest PL and default gems

• #2301 - unable to get value of object's fields in RubyMine debugger

• #2298 - Open3.capture3 still broken in JRuby 1.7.17

• #2297 - File.executable? raises an exception if the `file_path` is non-existent and native disabled

• #2296 - NullPointerException with JRuby 1.7.17 running rspec & simplecov in debug mode

• #2295 - Regexp.union [] gives wrong result in ruby 1.8 mode

• #2294 - String#crypt fails on Windows

• #2291 - Dir[] fails if path does not exist instead of returning nil

• #2259 - File.basename can return a string with a different encoding than the input

• #2172 - Symbols need to support UTF-8 names

• #2048 - Stat of an empty resource does not generate proper Exception.

• #1941 - Symlinks in load path should remain unexpanded in LOADED_FEATURES

• #1237 - jffi*.tmp files remain in %TMP% folder

JRuby是面向Ruby、基于Java虚拟机(JVM)的一种解释程序，它结合了Ruby语言的简易性和功能强大的JVM的执行机制，包括与Java库 全面集成。Rails彻底加快及简化了Web应用的开发，不过它让人觉得不够成熟，特别是在高端企业级功能方面。另一方面，Java平台及其虚拟机、库和 应用服务器的速度、稳定性和功能方面却一直在提升，现在已被公认为是开发高端服务器应用的领先平台。不过如果Java平台不与Ruby等新兴语言联系在一 起，就有可能落后于流行趋势。

原文链接：http://www.oschina.net/news/58195/jruby-1-7-18-released