message: Show undefined sequence as is
diff: @@ -12,7 +12,8 @@ export class HoverProvider implements vscode.HoverProvider {
  this.extension = extension
  import('mathjax-node').then(mj => {
  this.mj = mj
  - mj.config({ MathJax: {
  + mj.config({
  + MathJax: {
  jax: ['input/TeX', 'output/SVG'],
  extensions: ['tex2jax.js', 'MathZoom.js'],
  showMathMenu: false,
  @@ -22,9 +23,10 @@ export class HoverProvider implements vscode.HoverProvider {
  useGlobalCache: false
  },
  TeX: {
  - extensions: ['AMSmath.js', 'AMSsymbols.js', 'noUndefined.js', 'autoload-all.js']
  + extensions: ['AMSmath.js', 'AMSsymbols.js', 'autoload-all.js', 'noUndefined.js']
  }
  - } })
  + }
  + })
  mj.start()
  this.jaxInitialized = true
  })
  