String#scan doesn't restore backref
-----------------------------------
Key: JRUBY-1195
URL: http://jira.codehaus.org/browse/JRUBY-1195
Project: JRuby
Issue Type: Bug
Components: Core Classes/Modules
Environment: [EMAIL PROTECTED]
Reporter: Anders Bengtsson
This snippet prints "hello" in MRI, but nil in JRuby:
{noformat}
"%mhello".scan(/%m/) do |v|
"m" =~ /x/
end
p $'
{noformat}
This breaks Needle's unit tests (but possibly not Needle itself).
Comparing the String#scan implementations of MRI and JRuby shows that MRI takes
some care to keep the back-refs, which JRuby doesn't.
This one-liner fixes the case above, but probably isn't enough:
{noformat}
Index: src/org/jruby/RubyString.java
===================================================================
--- src/org/jruby/RubyString.java (revision 3969)
+++ src/org/jruby/RubyString.java (working copy)
@@ -2529,6 +2529,8 @@
}
}
+ context.setBackref(matchdata(runtime, str, mat, utf8));
+
return this;
}
{noformat}
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