Integers in Emacs Lisp are now arbitrary size, not just 32/64-bit! https://lists.gnu.org/archive/html/emacs-devel/2018-08/msg00360.html
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One interesting consequence of the rise of LLMs: there's more demand for tools that handle untrusted input.
Arbitrary HTML+JS can be safely run in a browser. Lean can check an arbitrary proof.
These work really well with an LLM that can be wrong, but sometimes gives exactly what you want. Are there other tools in this family?
Sometimes programming tools are so good that you miss them when using other languages. I see these mentioned the most frequently:
* IntelliJ (for Java)
* Slime+Emacs (for Common Lisp)
* Pharo (for Smalltalk)
I'm struck that they all have bespoke UIs.
Today I learnt that Emacs 28 shipped a context-menu-mode! https://oylenshpeegul.gitlab.io/blog/posts/20230129/
This seems quintessentially Emacs: deeply hackable, but building UI features in an order very different to the mainstream.