Add news post for myst-markdown-tree-sitter.nvim release

_posts/2026-02-17-myst-markdown-neovim-plugin.md

@@ -0,0 +1,21 @@
+---
+layout: post
+title: "New Tool: MyST Markdown Plugin for Neovim"
+author: QuantEcon
+excerpt: QuantEcon has released myst-markdown-tree-sitter.nvim, a Neovim plugin that provides syntax highlighting and filetype detection for MyST Markdown files using a tree-sitter backend.
+tag: [tools]
+---
+
+QuantEcon has released [myst-markdown-tree-sitter.nvim](https://github.com/QuantEcon/myst-markdown-tree-sitter.nvim), a Neovim plugin that provides syntax highlighting and filetype detection for [MyST (Markedly Structured Text)](https://mystmd.org/) markdown files.
+
+The plugin extends standard markdown highlighting with MyST-specific features, including:
+
+- **Code-cell directive highlighting** with language-specific syntax highlighting for `{code-cell}` directives
+- **Math directive highlighting** with LaTeX syntax highlighting for `{math}` directives
+- **Automatic filetype detection** for MyST markdown files based on content patterns
+- **Tree-sitter integration** for robust parsing
+- **Comprehensive testing** with 170+ tests
+
+The plugin supports a wide range of languages in code-cell directives, including Python, Julia, R, JavaScript, and more.
+
+For installation instructions and documentation, visit the [project website](https://quantecon.github.io/myst-markdown-tree-sitter.nvim/).