That website is also pretty snappy for me as a user, but it could be that it's because each webpage looks like it was hand-written rather than having content slog its way towards the user through a sea of Javascript frameworks.
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But why do people want their text editors to do completely unrelated tasks? Genuine question.
Because it's cool and fun.
Why would someone want to build a 3d roller coaster in Excel 2003?
Because it's cool and fun.
(side note: in another video the guy complains he prefers older excel as the can't get good framerates in modern Excel)
Another reason to use nvim over emacs.
Precisely what I needed today folks
Doing the Lord's work OP
Still a limited selection of vim webservers though. Have to bump that library size up.
https://iloveemacs.wordpress.com/2016/02/27/writing-web-apps-in-emacs-lisp/
There are several solutions for running a webserver in Emacs like Elnode from Nic Ferrier, httpd.el from Joe Schafer, simple-httpd from Christopher Wellons or Emacs Web Server from Eric Schulte.
And then there's the browser side!
https://www.gnu.org/software/emacs/manual/html_mono/eww.html#Top
EWW, the Emacs Web Wowser, is a web browser for GNU Emacs that provides a simple, no-frills experience that focuses on readability.

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