When adding a new language to difftastic, it's hard to find interesting git repositories to test against.
I've started just querying GitHub for the most starred repos for a given language. For example, here's Haskell: https://github.com/search?l=&o=desc&q=stars%3A%3E500+language%3AHaskell&s=stars&type=Repositories
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I've started keeping a list of particularly interesting bugs and patches that I've worked on: https://github.com/Wilfred/interesting-code
The time that I once removed *a single closing paren* in Emacs is still my favourite.
Ooh, difftastic is now listed on the official git website! https://git-scm.com/tools/command-line
I'm adding a += operator to my programming language, because writing `x = x + 1` is tedious.
This opens the tricky design question of which operators should support this. Is += and -= sufficient, or do you expect things like >>= and **= to be available?