使用PackageResourceViewer打开markdown extended的文件夹中的syntax/Markdown Extended.YAML-tmLanguage -comment下添加如下代码

- name: markup.raw.block.markdown markup.raw.block.fenced.markdown
  begin: \$\$
  end: \$\$
  # captures:
    # '1': {name: punctuation.definition.fenced.markdown}
    # '2': {name: variable.language.fenced.markdown}
    # '3': {name: punctuation.definition.fenced.markdown}
  patterns:
  - include: text.tex.latex

然后使用PackageDev运行convert(YAML,JSON) to ... 生成.tmLanguage文件