makefile / Markdown syntax highlighting quirks

Does this issue occur when all extensions are disabled?: Yes/No

• VS Code Version: 1.103.2
• OS Version: macOS Sequoia

Steps to Reproduce:

default: # Entrypoint
	echo "Hello, World!"

The trailing comment # Entrypoint should render as a comment in VSCode makefiles, including in markdown blocks with the code type set to make.

Instead, VSCode renders GFM code snippets as plain text.

And Markdown previews render default: # Entrypoint as one continuous target name. Including the colon (:) token.

Markdown previews also corrupt backslash (\) escaped multiline expressions.