Extensions prevents from parsing some urls and emails

[filiprak]

Example invalid case:

anchorme({
    input: `
      github.com
      @mention
      github.com
      #hashtag
      [email protected]
    `,
    extensions: [
      // Hashtags
      {
        test: /#(\w|_)+/gi,
        transform: string =>
        `<a href="https://a.b?s=${string.substr(1)}">${string}</a>`
      },
      // an extension for mentions
      {
        test: /@(\w|_)+/gi,
        transform: string =>
        `<a href="https://a.b?p=${string.substr(1)}">${string}</a>`
      }
    ]
  })