shebang line containing numbers garbles command line arguments
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Key: JRUBY-3522
URL: http://jira.codehaus.org/browse/JRUBY-3522
Project: JRuby
Issue Type: Bug
Affects Versions: JRuby 1.2
Environment: Linux devel-o8 2.6.26-1-686 #1 SMP Sat Jan 10 18:29:31
UTC 2009 i686 GNU/Linux
jruby 1.2.0 (ruby 1.8.6 patchlevel 287) (2009-03-16 rev 9419) [i386-java]
Reporter: Matthijs Bomhoff
Assignee: Thomas E Enebo
A shebang line containing a number is misinterpreted and causes everything
after the number to be parsed as command line arguments and used instead of any
real arguments passed to jruby.
In practice, this means existing scripts that contain a shebang with an
explicit version of the ruby interpreter (such as "ruby1.8") and are executed
directly from the command line without explicitly invoking the interpreter
cannot be run unmodified using jruby if they require command line arguments.
Removing the shebang line causes everything to work correctly again.
The following shebang lines work correctly:
#!/usr/bin/ruby
#!/usr/bin/env ruby
The following do not:
#!/usr/bin/ruby1
#!/usr/bin/ruby1.8
#!/usr/bin/env ruby1
#!/usr/bin/env ruby1.8
How to reproduce:
1. Create a very simple ruby script shebang.rb containing just the following
two lines:
#!/usr/bin/env ruby1.8
puts ARGV.inspect
2. Run the script using jruby
$ jruby shebang.rb foobar
[".8"]
3. Compare the output with the same script using ruby 1.8 or 1.9
$ ruby1.8 shebang.rb foobar
["foobar"]
$ ruby1.9 shebang.rb foobar
["foobar"]
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