astro/.changeset/moody-crabs-occur.md

---
'astro': patch
'@astrojs/markdown-remark': patch
---

Avoid parsing JSX, components, and Astro islands when using "plain" md mode. This brings `markdown.mode: 'md'` in-line with our docs description.
Fix: use `set:html` when markdown mode is `md` (#4008) * refactor: add legacy.jsxInMarkdown flag to config * fix: use `set:html` when `markdown.mode` is 'md' * Revert "refactor: add legacy.jsxInMarkdown flag to config" This reverts commit 5572e8d9b33eb1e9168d221f22348d3b3cb4b29a. * fix: move `remarkUnwrap, remarkEscape` to MDX only * fix: only apply scary HTML passthroughs on MDX * fix: move all JSX-specific rehype plugins under `isMDX` * fix: "allowDangerousHtml" for md (required for Shiki) * fix: apply `set:html` for non-layouts too * test: JSX expressions, components, syntax highlighting * chore: changeset * fix: ignore "setup" and "components" in plain MD mode * refactor: create new fixture to avoid weird caching error * fix: dup package name * chore: update lock * fix: apply rehypeCollectHeaders to md 2022-07-21 18:01:26 -04:00			`---`
			`'astro': patch`
			`'@astrojs/markdown-remark': patch`
			`---`

			Avoid parsing JSX, components, and Astro islands when using "plain" md mode. This brings `markdown.mode: 'md'` in-line with our docs description.