Multiple major-modes in a single buffer

[cxxxr]

[hendursaga]

This is similar to Emacs' polymode, yes?

[Sasanidas]

Indeed, this would be similar to polymode or https://github.com/dgutov/mmm-mode (at least in functionality)

[vindarel]

a step closer: https://github.com/lem-project/lem/pull/1377

aka Syntax highlighting of code block in markdown-mode

todo: Indentation within code blocks and their mode-specific features are future work.

[cxxxr]

Actually, the indentation is already done. https://github.com/lem-project/lem/pull/1381