Hi, Kitten!

(i'm one of the Fossil SCM developers, thus my interest in reporting these particular problems...)

1) The mimetype of:

https://www.kitten-technologies.co.uk/project/tangle/doc/trunk/README.wiki

is unfortunately detected incorrectly. The file is written in markdown dialect but fossil's file-extension-to-mimetype thinks it's in fossil-wiki format. If (and only if) all of your .wiki files are in markdown format, you can fix that by adding ".wiki text/x-markdown" as a custom mimetype in the repo settings. Unfortunately, though, that feature was added long after fossil 2.7 (what this site is running), so you'd need a newer fossil version.

2) Your site CSS changes the font for PRE tags to a non-fixed-width font, but this breaks the captcha for anonymous login on your login page. The only way i was able to log in to write this ticket was using the browser dev tools to edit the style for that element to have (font-family: monospace).

fossil 2.12 has many newer features you might like, such as the ability to edit repository files (like your `README.wiki`) directly online, without having to check out a copy of the repo first, and to use markdown in tickets.

Happy Hacking!