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ruff/crates/ruff_python_parser/tests/snapshots
Dan Parizher 474b00568a [parser] Fix panic when parsing IPython escape command expressions (#21480)
## Summary

Fixes a panic when parsing IPython escape commands with `Help` kind
(`?`) in expression contexts. The parser now reports an error instead of
panicking.

Fixes #21465.

## Problem

The parser panicked with `unreachable!()` in
`parse_ipython_escape_command_expression` when encountering escape
commands with `Help` kind (`?`) in expression contexts, where only
`Magic` (`%`) and `Shell` (`!`) are allowed.

## Approach

Replaced the `unreachable!()` panic with error handling that adds a
`ParseErrorType::OtherError` and continues parsing, returning a valid
AST node with the error attached.

## Test Plan

Added `test_ipython_escape_command_in_with_statement` and
`test_ipython_help_escape_command_as_expression` to verify the fix.

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Co-authored-by: Dhruv Manilawala <dhruvmanila@gmail.com>
2025-11-24 05:40:27 +00:00
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