String#slice! and String#[]= with negative ranges behave differently than Ruby
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Key: JRUBY-1730
URL: http://jira.codehaus.org/browse/JRUBY-1730
Project: JRuby
Issue Type: Bug
Components: Core Classes/Modules
Affects Versions: JRuby 1.x
Environment: Latest JRuby 1.1b1 from trunk.
Reporter: Vladimir Sizikov
Attachments: string-slice-behavior-differs-from-ruby.patch,
string_slice_range.rb
Conseder the example:
p "hello".slice!(-3..-9)
p "hello"[-3..-9]=""
It fails with JRuby:
string_slice_range.rb:1: -3..-9 out of range. (RangeError)
But works fine with MRI 1.8.6 and 1.9:
#>ruby string_slice_range.rb
""
""
This also leads to one rubinius spec failure:
49)
String#slice! Range deletes and return the substring given by the offsets of
the range FAILED
-3..-9 out of range.
/opt/work/rubinius/./spec/core/string/slice_spec.rb:146
/opt/work/rubinius/./spec/core/string/slice_spec.rb:146:in `it'
/opt/work/rubinius/spec/mini_rspec.rb:414:in `it'
/opt/work/rubinius/./spec/core/string/slice_spec.rb:146:in `it'
/opt/work/rubinius/./spec/core/string/slice_spec.rb:146:in `describe'
/opt/work/rubinius/spec/mini_rspec.rb:410:in `describe'
/opt/work/rubinius/./spec/core/string/slice_spec.rb:145:in `describe'
/opt/work/rubinius/./spec/core/string/slice_spec.rb:145:in `load'
tmp/last_mspec.rb:13:in `load'
tmp/last_mspec.rb:1:in `each'
tmp/last_mspec.rb:7:in `each'
The proposed patch fixes the problem and the spec failure.
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