‘Break’-ing ‘while’ loops in debug

I’m getting unexpected behaviour with break in a while loop. Basically, it isn’t breaking out of the while, or even out of that iteration, but returning control to an earlier point in the same iteration. I think it might have to do with nested if statements?

Outcome: break itself works fine. The issue is that it does not work the same while debugging. For some reason break in a debug doesn’t break out of the loop, but just reiterates. So the behaviour was weird and unexpected while stepping in debug, but worked fine when the code just ran.

Testing- this all works

This behaves as expected

count <- 1
while(count < 100) {
  print(glue::glue("Count is {count}"))
  if (count == 10) {
    break()
  }
  
  count <- count + 1
}

Count is 1
Count is 2
Count is 3
Count is 4
Count is 5
Count is 6
Count is 7
Count is 8
Count is 9
Count is 10

This is the situation I have that’s failing, but it seems to work here.

count <- 1
while(count < 100) {
  print(glue::glue("Count is {count}"))
  if ((count %% 2) == 0) {
    print(glue::glue("{count} is an even number"))
    if (count == 10) {
      break()
    }
  }
  
  
  count <- count + 1
}

Count is 1
Count is 2
2 is an even number
Count is 3
Count is 4
4 is an even number
Count is 5
Count is 6
6 is an even number
Count is 7
Count is 8
8 is an even number
Count is 9
Count is 10
10 is an even number

Just making the while more complicated doesn’t change it. Still works as expected.

count <- 1
while(count < 100) {
  print(glue::glue("Count is {count}"))
  if ((count %% 2) == 0) {
    print(glue::glue("{count} is an even number"))
    
    if (count == 10) {
      print('10')
    }
    
    if (count == 10) {
      print('breaking')
      break()
    }
    
    
  }
  
  if ((count %% 2) == 1) {
    print(glue::glue("{count} is an odd number"))
  }
  
  count <- count + 1
}

Count is 1
1 is an odd number
Count is 2
2 is an even number
Count is 3
3 is an odd number
Count is 4
4 is an even number
Count is 5
5 is an odd number
Count is 6
6 is an even number
Count is 7
7 is an odd number
Count is 8
8 is an even number
Count is 9
9 is an odd number
Count is 10
10 is an even number
[1] "10"
[1] "breaking"

But if I put those in a function, and step in with a debug, it doesn’t break, it keeps iterating. Just a quirk, I guess that I need to be aware of.