What version is this JRuby?


I am trying to debug logstash-2.2.2 in Eclipse, and I cannot figure out
the version of JRuby that came with it. Does below output say 1.7.23, or

c:\workspace\logstash\vendor\jruby\bin>jruby.exe --version
jruby 1.7.23 (1.9.3p551) 2015-11-24 f496dd5 on Java HotSpotâ„¢ 64-Bit
Server VM 1.8.0_73-b02 +jit [Windows 7-amd64]

I am getting compiler errors that may be caused by using JRuby 1.7, but
adding -Xcompat.version=1.9 did not work.


JRuby displays two version numbers. The first shows the JRuby version
itself. The second shows the corresponding MRI Ruby version it is based
on (i.e. the implemented language).