Nested Markdown Code Blocks

[slcoplin]

Describe the bug

Nesting mo.md(md.md()) clears mutliline code blocks.

Expected:

multiline
text

Actual mo.md(f'{mo.md(block)}'):

multiline text

Actual mo.md(f'{mo.as_html(mo.md(block))}'):

multiline text

Details

For block defined as:

block = """
```
multiline
text
```
"""

I've managed to work around this for a long time by just passing around strings instead of marimo objects, but I can't find a workaround if my code block is inside an accordion.

Will you submit a PR?

• Yes

Environment

I'm using marimo.app and locally,

{
  "marimo": "0.8.22",
  "OS": "Darwin",
  "OS Version": "24.6.0",
  "Processor": "arm",
  "Python Version": "3.8.11",
  "Binaries": {
    "Browser": "140.0.7339.133",
    "Node": "v20.9.0"
  },
  "Dependencies": {
    "click": "8.1.3",
    "importlib-resources": "6.1.1",
    "jedi": "0.19.2",
    "markdown": "3.7",
    "pygments": "2.19.1",
    "pymdown-extensions": "10.15",
    "ruff": "0.4.2",
    "starlette": "0.44.0",
    "tomlkit": "0.13.2",
    "typing-extensions": "4.9.0",
    "uvicorn": "0.33.0",
    "websockets": "12.0"
  },
  "Optional Dependencies": {
    "pandas": "1.4.4"
  }
}

Code to reproduce

marimo.app example

[mscolnick]

This might be coming from this line or similar:

marimo/marimo/_output/hypertext.py

Line 162 in 78fcd97

[line.strip() for line in self.text.strip().split("\n")]

, however, im not sure it is safe to remove (would need to do some smoke testing)

[mscolnick]

as a workaround, you could do mo.md(f'{mo.md(block).text}') (add the .text) to the internal one