Forum: JRuby feature request: better line numbers in java backtraces

It might be nice is java "internal" exceptions, like out of heap space,
when rescued by ruby code, had better looking stack traces somehow, for
instance this have heap space error has this backtrace:

 thread died Java heap space
org.jruby.util.ByteList.<init>(ByteList.java:91)
org.jruby.RubyIO.sysread(RubyIO.java:2801)
org.jruby.RubyIO$INVOKER$i$0$1$sysread.call(RubyIO$INVOKER$i$0$1$sysread.gen)
org.jruby.internal.runtime.methods.JavaMethod$JavaMethodN.call(JavaMethod.java:646)
org.jruby.internal.runtime.methods.DynamicMethod.call(DynamicMethod.java:204)
org.jruby.runtime.callsite.CachingCallSite.cacheAndCall(CachingCallSite.java:326)
org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:170)
org.jruby.ast.CallOneArgNode.interpret(CallOneArgNode.java:57)
org.jruby.ast.CallOneArgNode.interpret(CallOneArgNode.java:57)
org.jruby.ast.NewlineNode.interpret(NewlineNode.java:105)
org.jruby.ast.BlockNode.interpret(BlockNode.java:71)
org.jruby.evaluator.ASTInterpreter.INTERPRET_BLOCK(ASTInterpreter.java:112)
org.jruby.runtime.Interpreted19Block.evalBlockBody(Interpreted19Block.java:209)
org.jruby.runtime.Interpreted19Block.yield(Interpreted19Block.java:160)
org.jruby.runtime.Block.yield(Block.java:130)
org.jruby.RubyIO.open(RubyIO.java:1183)
org.jruby.RubyIO$INVOKER$s$0$0$open.call(RubyIO$INVOKER$s$0$0$open.gen)
org.jruby.internal.runtime.methods.DynamicMethod.call(DynamicMethod.java:216)
org.jruby.runtime.callsite.CachingCallSite.cacheAndCall(CachingCallSite.java:356)
org.jruby.runtime.callsite.CachingCallSite.callBlock(CachingCallSite.java:213)
org.jruby.runtime.callsite.CachingCallSite.callIter(CachingCallSite.java:222)
org.jruby.ast.CallTwoArgBlockNode.interpret(CallTwoArgBlockNode.java:62)
org.jruby.ast.NewlineNode.interpret(NewlineNode.java:105)
org.jruby.ast.BlockNode.interpret(BlockNode.java:71)
org.jruby.ast.WhileNode.interpret(WhileNode.java:131)
org.jruby.ast.NewlineNode.interpret(NewlineNode.java:105)
org.jruby.evaluator.ASTInterpreter.INTERPRET_BLOCK(ASTInterpreter.java:112)
org.jruby.runtime.Interpreted19Block.evalBlockBody(Interpreted19Block.java:209)
org.jruby.runtime.Interpreted19Block.yield(Interpreted19Block.java:160)
org.jruby.runtime.Block.yield(Block.java:130)
org.jruby.RubyIO.open(RubyIO.java:1183)
org.jruby.RubyIO$INVOKER$s$0$0$open.call(RubyIO$INVOKER$s$0$0$open.gen)
...


which basically lacks ruby callsite information (line numbers, etc.)

Thanks!
-r