New Website

I decided to finally build a new website, using Hugo.

I have this tendency to fall down absurd rabbitholes while working on projects like this. In this case, it involved making the home page of my website contain a (very rough draft of a) POSIX-like shell. Check it out if you’re a nerd like me! Just press ’enter’ on the main page to activate it.

How it’s Built

The crux of this shell is bash-parser, a repository I stumbled across on GitHub. It’s a javascript library with the capability of translating a string of bash to an AST. It’s not perfect, and neither is my shell’s implementation on top of it; however, I find it works well enough for the basics.

For example, if you wanted to search for any posts mentioning rolly cubes, you could use the following command:

find -type f . | xargs cat | grep rolly

The purists will say that you should be able to xargs into grep directly, to which I say… you’re right; PRs welcome!

Handling Input

…I’m stubborn. Like, really stubborn. This is how the default input cursor looks in my browser:

Here’s how I wanted it to look:

Unfortunately, at the time of writing, there’s not great support for CSS for input cursors.

So, what can we do? We can build our own!

Not so fast - building a text input from scratch in JavaScript is difficult impossible. Browsers implement a variety of keyboard shortcuts, and they’re impossible to hijack universally across all browsers. Instead of starting from scratch, though, we can build a text input in JavaScript using a real text input as our base!

I’ll spare you all the details for this post, but essentially I accomplished my goal by hijacking an always-focused off-screen text input, and spying on its text + selection state. If you’re interested, you can find the code here.