Delighted to see that Typescript 7 is moving to conventional LSP for its IDE services!
https://devblogs.microsoft.com/typescript/progress-on-typescript-7-december-2025/#resetting-language-service-issues
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On the challenge of writing accurate source spans on Unicode source code: https://reedmullanix.com/posts/unicode-source-spans.html
Also (see footnotes) a fair number of LSP clients assume UTF-8 despite early versions of LSP mandating UTF-16!
Delighted to see that TOML has released a new version! TOML is overall a great standard but I understand they had limited people with the power to cut a new release.
https://github.com/toml-lang/toml/releases/tag/1.1.0
It feels like rename is by far the most important refactoring operation. If I had an IDE with only one refactoring, I think I'd want rename.