Container with lazy line offset

[sisp]

Hi there,

I'm trying to create a micromark extension for Python Markdown admonition which has a somewhat peculiar behavior regarding lazy lines:

!!! Note "Did you know?"
    The next line is
not a lazy line

Unlike standard CommonMark syntax like blockquote where

> This is
a lazy line

renders as

This is a lazy line

Python Markdown admonition requires an offset for lazy lines:

!!! Note "Did you know?"
    The next line is
not a lazy line

!!! Note "Did you know?"
    The next line is
 not a lazy line

!!! Note "Did you know?"
    The next line is
  not a lazy line

!!! Note "Did you know?"
    The next line is
   not a lazy line

!!! Note "Did you know?"
    The next line is
    a lazy line

* !!! Note "Did you know?"
      The next line is
not a lazy line

* !!! Note "Did you know?"
      The next line is
  not a lazy line

* !!! Note "Did you know?"
      The next line is
   not a lazy line

* !!! Note "Did you know?"
      The next line is
    a lazy line (somewhat surprisingly)

* !!! Note "Did you know?"
      The next line is
     a lazy line (somewhat surprisingly)

* !!! Note "Did you know?"
      The next line is
      a lazy line

Effectively, the logic for determining lazy lines ignores the offset of the fence !!! plus at least 4 additional spaces (surprisingly only at least 2 additional spaces when inside a list item).

I've been trying to implement a tokenizer for this kind of behavior using a "document" extension inspired by blockquote and list, unfortunately without success regarding lazy lines. For instance,

!!! Note "Did you know?"
    The next line is
not a lazy line

is parsed with a lazy line and I can't seem to figure out if and how I can modify the lazy lines logic to ignore the described offset.

I'd very much appreciate some advice. 🙏

[wooorm]

Hey! Terribly sorry for the long wait.
Another construct that might be similar are footnotes: https://github.com/micromark/micromark-extension-gfm-footnote.
However, lazy paragraph lines, that’s just a CM thing of paragraphs, and I don’t think you can change it.

It’s been a bit since I worked on micromark, I’ll be doing that again the coming months. So I might have a fresher idea about what’s up in the code soon