https://markdown-it.github.io/#md3=%7B%22source%22%3A%22a%2A%2Aa%E2%88%87%2A%2Aa%5Cn%5Cna%2A%2A%E2%88%87a%2A%2Aa%5Cn%5Cna%2A%2Aa%F0%9D%9C%B5%2A%2Aa%5Cn%5Cna%2A%2A%F0%9D%9C%B5a%2A%2Aa%22%2C%22defaults%22%3A%7B%22html%22%3Afalse%2C%22xhtmlOut%22%3Afalse%2C%22breaks%22%3Afalse%2C%22langPrefix%22%3A%22language-%22%2C%22linkify%22%3Atrue%2C%22typographer%22%3Atrue%2C%22_highlight%22%3Atrue%2C%22_strict%22%3Afalse%2C%22_view%22%3A%22html%22%7D%7D

a**a∇**a

a**∇a**a

a**a𝜵**a

a**𝜵a**a

** in the last 2 paragraphs should not be converted to <strong>. (The first 2 are preserved as are)
𝜵 in them is in the Sm category but consumes 2 characters in JS string notation.

StateInline.prototype.scanDelims should use codePointAt and fromCodePoint, not only charCodeAt and fromCharCode, to recognize codepoints of characters like it.