Meta: HN cannot count. The original version [1] of this question was 2907 characters long, exceeding the 2000 character limit for text posts. I edited it down to 1993 characters [2] and it still was rejected for being over 2000 characters.
The present version is 1971 characters. My first guess was that maybe the length of the title is being counted too, but this version plus the title is 2029 and was obviously accepted.