Make byebug stay in scope/function after running last line

Question

Say I'm debugging a function like this

def foo {
  byebug
  x = 1+1
}

Running this, we hit the breakpoint. If I now hit "n", it runs the next line and exits the function. How can I instead remain in the function and inspect x?

score 3 · Accepted Answer · answered Dec 05 '15 at 15:16

3

Try finish 0.

The finish command should step out the number of frames you specify as an argument. If you specify 0, it has special behavior and just finishes the current frame without stepping out of it.

answered Dec 05 '15 at 15:16

deivid

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Thanks @deivid. This works in a standalone Ruby file, but for some reason didn't work in Rails (a model class called from a test case). Any idea why? – mahemoff Dec 05 '15 at 15:47
Can you try that using ruby-head. It includes some unreleased TracePoint API bugs. – deivid Dec 05 '15 at 17:58
Bug fixes, I mean. :) – deivid Dec 05 '15 at 18:10
Actually just updating to 2.1.3 (from 2.1.1) made it work now. This will be useful, thanks. – mahemoff Dec 06 '15 at 10:10
2.1.3. I had rvm on 2.1.* in this env. – mahemoff Dec 06 '15 at 19:52
Ah, ok. Just asking because the latest patch level version in the 2.1 series is 2.1.7 and it also includes TracePoint API bug fixes over 2.1.3 – deivid Dec 06 '15 at 21:36

Make byebug stay in scope/function after running last line

1 Answers1