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Linus Torvalds: Speaks on the Rust vs C Linux Divide
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this post was submitted on 18 Sep 2024
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I took notes for the benefit of anyone who doesn't like their info in video form. My attempt to summarize what Linus says:
He enjoys the arguments, it's nice that Rust has livened up the discussion. It shows that people care.
It's more contentious than it should be sometimes with religious overtones reminiscent of vi versus emacs. Some like it, some don't, and that's okay.
Too early to see if Rust in the kernel ultimately fails or succeeds, that will take time, but he's optimistic about it.
The kernel is not normal C. They use tools that enforce rules that are not part of the language, including memory safety infrastructure. This has been incrementally added over a long time, which is what allowed people to do it without the kind of outcry that the Rust efforts produce by trying to change things more quickly.
There aren't many languages that can deal with system issues, so unless you want to use assembler it's going to be C, C-like, or Rust. So probably there will be some systems other than Linux that do use Rust.
If you make your own he's looking forward to seeing it.
On a tangential note, what does Linus used, Vi or Emacs?
He uses a version of Emacs called MicroEmacs.
I recall seeing his MicroEmacs configuration a while back when I was exploring options to start using Emacs.
In testing, to settle a bet by a rabid cult-of-vi peer, I opened a given set of files in each editor, each a day apart because I couldn't be arsed to clear caches. This guy, otherwise a prince, was railing about emacs, but otherwise suffered days of waiting.
10/10 the memory usage by his precious vi was same-or-more than emacs.
There's so many shared libs pulled in by the shell that all the fuddy doomsaying about bloat is now just noise.
I avoid vi because even in 1992 it was crusty and wrong-headed. 30 years on the hard-headed cult and the app haven't changed.
I don't see how microEmacs can improve on what we have by default, and I worry that the more niche the product is the harder it will be to find answers online. But I'm willing to be swayed if anyone can pitch its virtues.
MicroEmacs was written in 1985 and has nothing to do with GNU Emacs (which people just call Emacs these days). It’s entirely outside of the vi-vs-emacs war.
Yeah the interface for it - and functionality - is more like nano than actual Emacs.
If we can believe random strangers in the internet, then Linus uses a self maintained lighter version of Emacs, or has. Looks like Linus is an Emacs guy.
my money is on vi or vi derivates.