I came up with a neat trick to use Python type annotations to tag multi line string as different languages, and a VSCode plugin for it: https://github.com/samwi

I came up with a neat trick to use Python type annotations to tag multi line string as different languages, and a VSCode plugin for it: https://github.com/samwillis/python-inline-source https://github.com/samwillis/python-inline-source The difficulty is that it would need a completely new langue server to support auto-completion. Currently it only does syntax highlighting.