Delighted to see my markdown post on HN! https://news.ycombinator.com/item?id=8674494 FWIW, markdown's increasing ubiquity offsets its gotchas somewhat.
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One cute feature of markdown I'd not noticed before: there's no syntax for images *without* a description (i.e. alt text).

https://spec.commonmark.org/0.31.2/#images
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
Today I learnt that you can mix HTML inline in markdown! For example, the following is valid.
Foo <hr/>
I'd assumed that you needed HTML separately, like ``` blocks, but no: https://spec.commonmark.org/0.31.2/#raw-html
Admittedly HTML is very restricted on most sites, but it's helpful for SSGs.