[Bug] has a problem with sublime4

[MakeUpForeverForMe]

如图，在图片中sublime右下角的语言设置中未出现 markdownediting 的内容，并在打开markdown文件时发生了错误

[deathaxe]

If you just updated from a very old version, your open files may still point to wrong syntax.

Maybe re-open all files or disable and re-enable MarkdownEditing to trigger re-creation of Markdown override package.

MarkdownEditing replaces bundled Markdown.sublime-package to provide syntax definitions. Thus you won't see any Markdown syntax under MarkdownEditing package.

see also: #802 (comment)