I'm delighted to announce that I've assigned copyright to the FSF! I can now send patches to #Emacs itself!
Related Posts
Difftastic already supported more than 20 languages, but I've been impressed at how many requests / patches I've received for additional languages!
I've added a new section in the manual to make adding new languages easier: https://difftastic.wilfred.me.uk/adding_a_parser.html
Apparently the WTF license is used in software packaged by all major distros, and the FSF considers it valid! https://www.wtfpl.net/faq/
Bugs being embarrassing is a great motivator. I've just fixed a silly crash on one of my Emacs packages.