set linetrace on not working?

[tcwinn]

I'm trying out the tutorial example and got nothing:
/home/netflow/dev/triangle.rb:6
0.upto(n) do |i|
(rdb:1) p tri
0
(rdb:1) display tri
1: tri = 0
(rdb:1) display i
2: i =
(rdb:1) set linetrace on
line tracing is on.
(rdb:1) finish
6

I'm expecting

(rdb:1) display i
2: i =
(rdb:1) set linetrace on
line tracing is on.
(rdb:1) finish
Tracing(1):triangle.rb:7 tri += i
1: tri = 0
2: i = 0
Tracing(1):triangle.rb:7 tri += i
1: tri = 0
2: i = 1
Tracing(1):triangle.rb:7 tri += i
1: tri = 1
2: i = 2
Tracing(1):triangle.rb:7 tri += i
1: tri = 3
2: i = 3
Tracing(1):triangle.rb:9 return tri
1: tri = 6
2: i =

[cldwalker]

I've confirmed set linetrace and set linetrace+ don't work in debugger. I've also confirmed they don't work in the latest ruby-debug19. This makes me wonder if they ever worked in 1.9.x. I've leave this as a bug for now. I may eventually remove support for this if no one steps up to fix it (I don't use this feature). It would be nice to have a guide in the future that's specific to debugger

[deivid-rodriguez]

Does it work if you set it with trace on?