More than four years ago, I published the following two VS Code extensions, but I haven't been able to maintain them.
- Hatena Language Syntax Highlighting - Visual Studio Marketplace
- Blog post (Japanese): はてな記法のシンタックスハイライトに対応したVS Code拡張を作った - stefafafan の fa は3つです
- Mackerel Expression Graph Syntax Highlighting - Visual Studio Marketplace
- Blog post (Japanese): Mackerelの「式グラフ」記法のシンタックスハイライトに対応したVS Code拡張を作った
Not being able to work on security updates and such is not ideal, so I archived the GitHub repositories and requested these extensions to be marked as deprecated in the Extension Marketplace.
Deprecating VS Code extensions in the Extension Marketplace
As of 2026-04-19, one can request deprecation by posting in the following Discussion:
It is very interesting that the deprecation process is still not systematic.