File.open mode doesn't accept "r:ENC:-"
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Key: JRUBY-5436
URL: http://jira.codehaus.org/browse/JRUBY-5436
Project: JRuby
Issue Type: Bug
Components: Ruby 1.9
Affects Versions: JRuby 1.6RC1
Reporter: Stefan Lang
Assignee: Thomas E Enebo
{noformat}
$ echo hello > test.txt
$ irb19 -U
irb(main):001:0> Encoding.default_external
=> #<Encoding:UTF-8>
irb(main):002:0> Encoding.default_internal
=> #<Encoding:UTF-8>
irb(main):003:0> f = File.open("test.txt", "r:US-ASCII:-")
=> #<File:test.txt>
irb(main):004:0> f.internal_encoding
=> nil
irb(main):005:0> s = f.read
=> "hello\n"
irb(main):006:0> s.encoding
=> #<Encoding:US-ASCII>
$ jruby --1.9 -S jirb -U
/home/stefan/Ruby/ruby/jruby-1.6.0.RC1/lib/ruby/1.9/irb/input-method.rb:108
warning: Ignoring internal encoding UTF-8: it is identical to external encoding
UTF-8
/home/stefan/Ruby/ruby/jruby-1.6.0.RC1/lib/ruby/1.9/irb/input-method.rb:109
warning: Ignoring internal encoding UTF-8: it is identical to external encoding
UTF-8
irb(main):001:0> Encoding.default_external
Encoding.default_external Encoding.default_external=
irb(main):001:0> Encoding.default_external
=> #<Encoding:UTF-8>
irb(main):002:0> Encoding.default_internal
=> #<Encoding:UTF-8>
irb(main):003:0> f = File.open("test.txt", "r:US-ASCII:-")
ArgumentError: unknown encoding name - -
from org/jruby/RubyIO.java:1024:in `set_encoding'
from org/jruby/RubyFile.java:446:in `initialize19'
from org/jruby/RubyIO.java:1062:in `open'
from (irb):3:in `evaluate'
from org/jruby/RubyKernel.java:1096:in `eval19'
from org/jruby/RubyKernel.java:1421:in `loop'
from org/jruby/RubyKernel.java:1208:in `rbCatch19'
from org/jruby/RubyKernel.java:1208:in `rbCatch19'
{noformat}
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