$to_yaml() can slightly modify YAML data not related to authors

[arnaudgallou]

Rewriting YAML headers slightly alter some data unrelated to authors:

lines <- "
  foo: !!float 123
  # a comment that will be dropped
  bar: >
    Lorem ipsum
    Vivamus quis
  baz: &id1
    a: 1
    b: 2
  boz: *id1
"

yaml::yaml.load(lines) |> 
  yaml::as.yaml() |> 
  cat()
#> foo: 123.0
#> bar: |
#>   Lorem ipsum Vivamus quis
#> baz:
#>   a: 1
#>   b: 2
#> boz:
#>   a: 1
#>   b: 2

This might not be desirable… I could detect these cases, write author data in an empty YAML header at the beginning of the document if they exist, and notify the user about it.