(And yes, by arguing for a prescriptive change like this to the spec, this means I’m doing a complete 180 from the hardline-descriptivist position I originally held when CommonMark was first launched five years ago. Lesson learned: if you’re going to be asking every implementation to make some changes in order to conform to a first-of-its-kind formal specification, it’s worth sneaking in minor cleanups that’ll apply for all of them.)