set_trace_func since CVS 2005-04-04: No return events?

Moin.

Since ruby-breakpoint does not seem to work with Debian Unstable's Ruby 
which has merged back CVS changes I began looking into that issue with 
the kind help of Akira Yamada.

It appears that the CVS Head does no longer generate return events (in 
some circumstances?) where Ruby 1.8.2 still did. This breaks my 
implementation of Binding.of_caller which in turn causes the 
ruby-breakpoint library not to work anymore.

Is this by design?

I've attached the Binding.of_caller code to this mail, here is how it 
would be used:

def trace(var)
   Binding.of_caller do |context|
     value = eval(var.to_s, context)
     puts ">> #{var} = #{value.inspect}"
   end
end

x = 5
trace :x
x *= 2
trace :x
x **= 3
trace :x

trace "x*x"

puts "Done!"

Regards,
Florian Gross