Code blocks - easier to pick language

Can we get an option to insert a code block in a specific language through slash command? e.g.:

Bonus points/alternative might be to have a document setting for default code block language.

This’d be neat, I’d also suggest being able to write three apostrophes and then the language though, I think that’s standard for markdown.

Currently a code block is started in Coda by writing three apostrophes, but no chance to write the language.

It even works here in the forum