ERB: https://en.wikipedia.org/wiki/ERuby

> Parses input fast enough to update on every keystroke, ensuring real-time responsiveness…

Wow!!! Cool to see ERB being embraced and enhanced in this way, I’ll have to check it out

If it is what I think it is, it’s extremely neat. Parsing both HTML and templating syntax at the same time is way more robust than doing just the templating and hoping for the best.

I was thinking about something like this, but with some blend of Jinja2 / Twig / Nunjucks [1] syntax and Svelte/JSX-like use of variables in element attributes:

  {% for para in page.body %}
    <p class={{ para.class }} {{ **para.attrs }}>
      {{ para.text }}
    </p>
  {% endfor %}

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[1]: the irony is not lost on me that I’m mentioning Python, PHP and JS template engines in a Ruby discussion :-) Liquid is the closest equivalent I think, but there was some crucial piece missing last time I had to use it, though I can’t remember what exactly.

One thing that's not very clear from the documentation is what the application of this may be. I see that it parses ERB and or HTML into an AST. Is this intended to enable improved HTML and ERB linters and language servers? This seems like a tool that other development tools will benefit from.

I realize this is new, but as tools start using herb, it would nice to link to those tools from the herb website and or github readme.

If you're not familiar with the Ruby ecosystem, the site does a very poor job of communicating what this is actually about. A single definition of ERB would have helped a lot.