I've released difftastic 0.13! In this release:
* Added support for Bash, Common Lisp and Ruby
* Improved C, CSS, JS, JSON, TS and plain text in comments
* A bunch of new explanatory screenshots in the README
miniblog.
Related Posts
Difftastic 0.69 is out! This is a pretty big release:
* Semantically insignificant commas are now ignored
* Difftastic now respects .gitattributes
* Added assembly support and improved 13 other languages
I'm considering using WebP more: for example, my websites would load faster and browsers have supported it since 2020: https://caniuse.com/webp
That said, GitHub just added support in August 2025, so I suspect I'd still find use cases that don't work yet:
I've added an eval button to the website of my programming language!
It's a been a lot of work to lock down appropriately. It still needs some UI polish but it's so nice to be able to try snippets immediately.




