Amusingly, parts of atom-beautify use Emacs to format code! https://github.com/Glavin001/atom-beautify/search?q=emacs&unscoped_q=emacs
Presumably there aren't many options for formatting of Verilog, VHDL or Fortran.
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Difftastic has been cited in a paper!
Modernizing SMT-Based Type Error Localization https://arxiv.org/abs/2408.09034
The authors use difftastic to work out which parts of a buggy program have actually changed, a great use case :)
One interesting design choice in Emacs that I haven't seen in other editors: reserved shortcuts.
An Emacs extension shouldn't use F5 through F12, or Ctrl-c LETTER. This lets users configure their own shortcuts. https://www.gnu.org/software/emacs/manual/html_node/emacs/Key-Bindings.html
Does it exist elsewhere? I miss it in VS Code, where e.g. all the Fn keys are already assigned.
WebAssembly seems like a totally reasonable bytecode format, but I've not had many opportunities to use it so far.
Has wasm found its 'killer app' yet?