Unexpectedly stepping into prelude methods like binding.irb

[st0012]

Your environment

• ruby -v: 1.7.0
• rdbg -v: 3.1.2

Describe the bug

step command can step into Ruby's prelude methods, like binding.irb.

rdbg -e 's' test.rb
[1, 3] in test.rb
=>   1| binding.irb
     2|
     3| a = 1
=>#0    <main> at test.rb:1
(rdbg:commands) s
# No sourcefile available for <internal:prelude>
=>#0    Binding#irb at <internal:prelude>:19
  #1    <main> at test.rb:1
(rdbg)

But looking at the code, it should be skipped by skip_internal_path?.

To Reproduce

# test.rb
binding.irb

a = 1 # not important

$ rdbg -e 's' test.rb

Expected behavior

It shouldn't step into the prelude method but directly into IRB's internal.

Additional context

This is because skip_location? appends !eval: to the frame path, so path.start_with?('<internal:') failed to match it.