If you write a blog post with an acronym in the title that isn’t common knowledge, for the love of god please spell it out in the first paragraph
this post was submitted on 29 Mar 2025
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Technically they do via a footnote... but it's a pretty confusing one at that!
The FLS stood for the "Ferrocene Language Specification". The minimal fork of Rust that Ferrous Systems qualifies and ships to their customers is called "Ferrocene", hence the name. We'll be dropping the expansion and just calling it the FLS within the Project.
So now it stands for... nothing. Bizarre.
Lots of acronyms no longer stand for anything due to losing their original associations. LLVM, AT&T, SAT (the test, not the programming problem), etc.
Indeed, it would seem that the proper thing to say now is that Rust is merging in the FLS language specification.
I guess this means FLS is the official spec now? Does that mean people can stop complaining about there being no official spec?
(As far as I'm aware, while FLS was developed to mirror rustc, rustc does not guarantee that it follows FLS, though they might change that after adoption)