Module language 

Extract (language, body) from a block’s raw text.

A code block in outl is a multi-line bullet whose text is the fenced markdown — opening fence, body, closing fence — preserved verbatim across parse/render cycles. The block text looks like a standard CommonMark fence:

• line 1: triple-backtick + language tag (e.g. lisp)
• line 2..N: the body
• last line: triple-backtick closer

This module is the boundary between “block text as it lives in the AST” and “what the runtime sees” (just the body, plus the language tag). Pure functions, no I/O.

Structs

FenceParts

What extract_fence returns when the block is a code fence.

Functions

extract_fence

Parse the language tag and body out of a block whose first line opens a fence. Returns None if the text doesn’t start with ``` — i.e. the block isn’t a code block at all.