Have you ever wanted to compile C code to elisp? There exists a compiler that offers an elisp backend!
miniblog.
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tagref is a cute tool where you write `// see [tag:foo] and it ensures that `[tag:foo]` actually exists somewhere in your codebase.
I've seen people hook up Emacs to Eclipse for Java smarts, but TIL that lsp-intellij exists for Emacs too!
The Nintendo Switch has a clever way of preventing firmware downgrades: upgrading the firmware blows an internal fuse!
https://news.ycombinator.com/item?id=27202766
This means that the hardware knows a newer firmware exists.