Syntax highlighting indented code

@ioquatix, this seems somewhat like a case of the undermentioned:

Fenced code blocks are an improvement in syntax highlighting capability, and I’m surprised that you solely ever encounter a need to indent when using code blocks. You should use fences.

However, note that Stack Exchange has implemented syntax for this:

https://meta.stackexchange.com/revisions/360140/2#:~:text=Code%20fences%20are%20also%20now%20the%20preferred%20approach%20for%20creating%20code%20blocks%2C%20as%20the%20<!--%20language:%20lang-none%20-->%20approach%20was%20deprecated%20in%20the%202020%20switch%20to%20CommonMark: