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Not sure what the implications are of that.
Doesn't seem to affect tests. but I thought I'd single those out as they could influence the condition checking.
The first 1 is trivial. but maybe the conditions in traversals could influence some calculations.
Edit: If you have an idea for a test, I wouldn`t mind adding on. The coverage suggests the cases were not covered before and after this change https://app.codecov.io/gh/rich-iannone/DiagrammeR/pull/504/blob/R/trav_in_until.R
I added another change, but let me know if you think it is correct or not, maybe you only meant to test for
length(from_column)
?