Add follow function

[mdbraber]

As I often want to open links directly I added a "follow" function to open the current link under the cursor

[mgsloan]

Good idea, thanks for the PR!

Unfortunately, I forgot about the notification for this PR when I pushed out version 16, but it will be included in version 17 of the extension.

For future contributions if'd be ideal if you ran ./eslint.sh and resolved the issues it reports. I don't mind fixing it though (I wish more maintainers would just fix things they want changed in PRs instead of fixing it themselves - seems more efficient!)

It would also be good to update readme.md and changelog.md, but I'll do that too.

[mgsloan]

      var parser = new DOMParser();
      var pc = parser.parseFromString(content.innerHTML, 'text/html');
      var link = pc.getElementsByClassName('ex_link')[0].getAttribute('href');

BTW it's totally redundant and potentially error prone to parse innerHTML. Is there a reason for doing this? I've replaced it with getFirstClass(content, 'ex_link'), but yeah I wouldn't expect people to know about the little utility library that has things like this :)

I'm also wondering about

      if (!link.match(/^https?:\/\//i)) {
        link = 'http://' + link;
      }

I will leave this in, but I'd be surprised if it is necessary - I'd think that window.open could handle any thing href can, except perhaps relative links, and this url modification code would break relative links. Not that relative urls would be very useful in this context.

[mgsloan]

Also, it's much better to just click the link. This way the browser will take into account the target=_blank attribute, and open a new tab instead of a whole new window. So now the main body of the implementation is quite simple:

      var link = getFirstClass(content, 'ex_link');
      if (link) {
        click(link);
      }

Due to this link clicking implementation I have also removed the URL munging code.

[mgsloan]

I use this all the time now - great idea!

[mgsloan]

I've released this, it is now included in version 17 👍

[mdbraber]

Great! (Honestly I've transitioned back to Things 3, but it's good to hear this is being used :-)