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Poor argument handling in jruby.bash start script for the JRuby interpreter #3384

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nelsnelson opened this issue Oct 10, 2015 · 7 comments
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Poor argument handling in jruby.bash start script for the JRuby interpreter #3384

nelsnelson opened this issue Oct 10, 2015 · 7 comments
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@nelsnelson
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This sort of error should be handled more gracefully, I think.

$ jruby -version
jruby 9.0.1.0 (2.2.2) 2015-09-02 583f336 Java HotSpot(TM) 64-Bit Server VM 25.45-b02 on 1.8.0_45-b14 +jit [darwin-x86_64]
NameError: undefined local variable or method `rsion' for main:Object
  <top> at -e:1
@nirvdrum
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That's a tricky one. We do what MRI does:

> ruby -version
ruby 2.2.2p95 (2015-04-13 revision 50295) [x86_64-linux]
-e:1:in `<main>': undefined local variable or method `rsion' for main:Object (NameError)

@nirvdrum
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To be clear, what's happening is the -v flag is recognized, followed by the -e flag, followed by the argument to the -e flag, which in this case is "rsion". "rsion" is evaluated as an inline script and you end up getting the error about the undefined local variable.

@nelsnelson
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:+1 @nirvdrum

@nelsnelson
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Ah, I see. Well, if MRI does it then, nevermind.

@nirvdrum
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FWIW, I do agree it could be more friendly. It'd probably be best to take it up with the MRI tracker and see if gets accepted there.

@enebo
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enebo commented Oct 10, 2015 

module Kernel
  def rsion
     org.jruby.util.cli.OutputStrings.get_version_string
  end
end

@enebo
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enebo commented Oct 10, 2015

(This was a joke)

@enebo enebo added this to the Invalid or Duplicate milestone Oct 13, 2015
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@nirvdrum @enebo @nelsnelson