I believe all the HTML entities defined here: https://github.com/r-lib/marquee/blob/main/src/named_entities.h are incorrect. They all have an extra 0 in the hex representation.

Examples:

  defined here:

It should be \u00A0 but it is \u000A0. We can see that marquee returns the latter (with the extra zero).

cat(marquee::marquee_parse("- -")$text[2]) # marquee result
#> -
#> 0-
cat("-\u000A0-") # same code printed directly
#> -
#> 0-
cat("-\u00A0-") # correct code for non-breaking space
#> - -

Another example, > defined here:

cat(marquee::marquee_parse("->-")$text[2]) # marquee result
#> -�E-
cat("-\u0003E-") # same code printed directly
#> -�E-
cat("-\u003E-") # correct code for > sign
#> ->-

It looks to me like the extra 0 is there consistently throughout the entire lookup table, but I haven't checked systematically. Happy to prepare a PR that removes these zeros, as my first contribution to marquee.