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8b9ab48ac6
Summary -- Fixes #20844 by refining the unsupported syntax error check for [PEP 701] f-strings before Python 3.12 to allow backslash escapes and escaped outer quotes in the format spec part of f-strings. These are only disallowed within the f-string expression part on earlier versions. Using the examples from the PR: ```pycon >>> f"{1:\x64}" '1' >>> f"{1:\"d\"}" Traceback (most recent call last): File "<stdin>", line 1, in <module> ValueError: Invalid format specifier '"d"' for object of type 'int' ``` Note that the second case is a runtime error, but this is actually avoidable if you override `__format__`, so despite being pretty weird, this could actually be a valid use case. ```pycon >>> class C: ... def __format__(*args, **kwargs): return "<C>" ... >>> f"{C():\"d\"}" '<C>' ``` At first I thought narrowing the range we check to exclude the format spec would only work for escapes, but it turns out that cases like `f"{1:""}"` are already covered by an existing `ParseError`, so we can just narrow the range of both our escape and quote checks. Our comment check also seems to be working correctly because it's based on the actual tokens. A case like [this](https://play.ruff.rs/9f1c2ff2-cd8e-4ad7-9f40-56c0a524209f): ```python f"""{1:# }""" ``` doesn't include a comment token, instead the `#` is part of an `InterpolatedStringLiteralElement`. Test Plan -- New inline parser tests [PEP 701]: https://peps.python.org/pep-0701/ |
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| ruff | ||
| ruff_annotate_snippets | ||
| ruff_benchmark | ||
| ruff_cache | ||
| ruff_db | ||
| ruff_dev | ||
| ruff_diagnostics | ||
| ruff_formatter | ||
| ruff_graph | ||
| ruff_index | ||
| ruff_linter | ||
| ruff_macros | ||
| ruff_memory_usage | ||
| ruff_notebook | ||
| ruff_options_metadata | ||
| ruff_python_ast | ||
| ruff_python_ast_integration_tests | ||
| ruff_python_codegen | ||
| ruff_python_formatter | ||
| ruff_python_importer | ||
| ruff_python_index | ||
| ruff_python_literal | ||
| ruff_python_parser | ||
| ruff_python_semantic | ||
| ruff_python_stdlib | ||
| ruff_python_trivia | ||
| ruff_python_trivia_integration_tests | ||
| ruff_server | ||
| ruff_source_file | ||
| ruff_text_size | ||
| ruff_wasm | ||
| ruff_workspace | ||
| ty | ||
| ty_combine | ||
| ty_completion_eval | ||
| ty_ide | ||
| ty_project | ||
| ty_python_semantic | ||
| ty_server | ||
| ty_static | ||
| ty_test | ||
| ty_vendored | ||
| ty_wasm | ||