Allow transparent cell magics (#8911)

## Summary

This PR updates the logic for `is_magic_cell` to include certain cell
magics. These cell magics would contain Python code following the line
defining the command. The code could define a variable which can then be
referenced in other cells. Currently, we would ignore the cell
completely leading to undefined-name violation.

As discussed in
https://github.com/astral-sh/ruff/issues/8354#issuecomment-1832221009

## Test Plan

Add new test case to validate this scenario.
This commit is contained in:
Dhruv Manilawala 2023-12-07 14:15:43 -06:00 committed by GitHub
parent 04ec11a73d
commit 6bbabceead
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7 changed files with 102 additions and 4 deletions

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@ -426,6 +426,7 @@ mod tests {
#[test_case(Path::new("code_and_magic.json"), true; "code_and_magic")]
#[test_case(Path::new("only_code.json"), true; "only_code")]
#[test_case(Path::new("cell_magic.json"), false; "cell_magic")]
#[test_case(Path::new("valid_cell_magic.json"), true; "valid_cell_magic")]
#[test_case(Path::new("automagic.json"), false; "automagic")]
#[test_case(Path::new("automagics.json"), false; "automagics")]
#[test_case(Path::new("automagic_before_code.json"), false; "automagic_before_code")]