Thanks for our answers.
Apparently there’s already an issue filed for it.
I have a conflict of interest in being for this so I’ll refrain from commenting :–) but I think it would be nice if there was a common behaviour for parsers on these (likely) corner cases.
P.S. I forgot to add the spec tag when I posted this other topic but it is also a request for clarification of the spec. If you have time to have a look at it that would be great.